{"id":73542,"date":"2026-02-07T21:05:01","date_gmt":"2026-02-07T13:05:01","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/73542.html"},"modified":"2026-02-07T21:05:01","modified_gmt":"2026-02-07T13:05:01","slug":"spring-bean-%e6%a0%b8%e5%bf%83%e4%ba%94%e9%97%ae%ef%bc%9a%e4%bd%9c%e7%94%a8%e5%9f%9f%e3%80%81%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e3%80%81%e5%b7%a5%e5%8e%82%e6%a8%a1%e5%bc%8f%e3%80%81%e5%ae%9e","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/73542.html","title":{"rendered":"Spring Bean \u6838\u5fc3\u4e94\u95ee\uff1a\u4f5c\u7528\u57df\u3001\u751f\u547d\u5468\u671f\u3001\u5de5\u5382\u6a21\u5f0f\u3001\u5b9e\u4f8b\u5316\u4e0e\u5faa\u73af\u4f9d\u8d56"},"content":{"rendered":"<h2>\u4e00\u3001Bean\u7684\u4f5c\u7528\u57df<\/h2>\n<h3>1.1 singleton<\/h3>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;Spring\u7684IoC\u5bb9\u5668\u521b\u5efa\u7684Bean\u5bf9\u8c61\u662f\u5355\u4f8b\u7684&#xff0c;Bean\u5bf9\u8c61\u7684\u521b\u5efa\u662f\u5728\u521d\u59cb\u5316Spring\u4e0a\u4e0b\u2f42\u7684\u65f6\u5019\u5c31\u5b8c\u6210\u7684\u3002<\/p>\n<h3>1.2 prototype<\/h3>\n<p>\u5982\u679c\u60f3\u8ba9Spring\u7684Bean\u5bf9\u8c61\u4ee5\u591a\u4f8b\u7684\u5f62\u5f0f\u5b58\u5728&#xff0c;\u53ef\u4ee5\u5728bean\u6807\u7b7e\u4e2d\u6307\u5b9ascope\u5c5e\u6027\u7684\u503c\u4e3a&#xff1a;prototype&#xff0c;\u8fd9\u6837Spring\u4f1a\u5728\u6bcf\u2f00\u6b21\u6267\u2f8fgetBean()\u2f45\u6cd5\u7684\u65f6\u5019\u521b\u5efaBean\u5bf9\u8c61&#xff0c;\u8c03\u2f64\u2f0f\u6b21\u5219\u521b\u5efa\u2f0f\u6b21\u3002<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>sb<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.beans.SpringBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">scope<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>prototype<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>scope\u5982\u679c\u6ca1\u6709\u914d\u7f6e&#xff0c;\u9ed8\u8ba4\u503c\u662fsingleton&#xff0c;\u5355\u4f8b\u7684\u3002<\/p>\n<h3>1.3 \u5176\u4ed6scope<\/h3>\n<p>scope\u5c5e\u6027\u7684\u503c\u4e0d\u2f4c\u4e24\u4e2a&#xff0c;\u5b83\u2f00\u5171\u5305\u62ec8\u4e2a\u9009\u9879&#xff1a;<\/p>\n<ul>\n<li>singleton&#xff1a;\u9ed8\u8ba4\u7684&#xff0c;\u5355\u4f8b\u3002<\/li>\n<li>prototype&#xff1a;\u539f\u578b\u3002\u6bcf\u8c03\u2f64\u2f00\u6b21getBean()\u2f45\u6cd5\u5219\u83b7\u53d6\u2f00\u4e2a\u65b0\u7684Bean\u5bf9\u8c61\u3002\u6216\u6bcf\u6b21\u6ce8\u2f0a\u7684\u65f6\u5019\u90fd\u662f\u65b0\u5bf9\u8c61\u3002<\/li>\n<li>request&#xff1a;\u2f00\u4e2a\u8bf7\u6c42\u5bf9\u5e94\u2f00\u4e2aBean\u3002\u4ec5\u9650\u4e8e\u5728WEB\u5e94\u2f64\u4e2d\u4f7f\u2f64\u3002<\/li>\n<li>session&#xff1a;\u2f00\u4e2a\u4f1a\u8bdd\u5bf9\u5e94\u2f00\u4e2aBean\u3002\u4ec5\u9650\u4e8e\u5728WEB\u5e94\u2f64\u4e2d\u4f7f\u2f64\u3002<\/li>\n<li>global session&#xff1a;portlet\u5e94\u2f64\u4e2d\u4e13\u2f64\u7684\u3002\u5982\u679c\u5728Servlet\u7684WEB\u5e94\u2f64\u4e2d\u4f7f\u2f64global session\u7684\u8bdd&#xff0c;\u548csession\u2f00\u4e2a\u6548\u679c\u3002&#xff08;portlet\u548cservlet\u90fd\u662f\u89c4\u8303\u3002servlet\u8fd0\u2f8f\u5728servlet\u5bb9\u5668\u4e2d&#xff0c;\u4f8b\u5982Tomcat\u3002portlet\u8fd0\u2f8f\u5728portlet\u5bb9\u5668\u4e2d\u3002&#xff09;<\/li>\n<li>application&#xff1a;\u2f00\u4e2a\u5e94\u2f64\u5bf9\u5e94\u2f00\u4e2aBean\u3002\u4ec5\u9650\u4e8e\u5728WEB\u5e94\u2f64\u4e2d\u4f7f\u2f64\u3002<\/li>\n<li>websocket&#xff1a;\u2f00\u4e2awebsocket\u2f63\u547d\u5468\u671f\u5bf9\u5e94\u2f00\u4e2aBean\u3002\u4ec5\u9650\u4e8e\u5728WEB\u5e94\u2f64\u4e2d\u4f7f\u2f64\u3002<\/li>\n<li>\u2f83\u5b9a\u4e49scope&#xff1a;\u5f88\u5c11\u4f7f\u2f64\u3002<\/li>\n<\/ul>\n<h2>\u4e8c\u3001Bean\u7684\u751f\u547d\u5468\u671f<\/h2>\n<h3>2.1 Bean\u7684\u751f\u547d\u5468\u671f<\/h3>\n<p>Spring\u5176\u5b9e\u5c31\u662f\u2f00\u4e2a\u7ba1\u7406Bean\u5bf9\u8c61\u7684\u2f2f\u2f1a\u3002\u5b83\u8d1f\u8d23\u5bf9\u8c61\u7684\u521b\u5efa&#xff0c;\u5bf9\u8c61\u7684\u9500\u6bc1\u7b49\u3002\u6240\u8c13\u7684\u2f63\u547d\u5468\u671f\u5c31\u662f&#xff1a;\u5bf9\u8c61\u4ece\u521b\u5efa\u5f00\u59cb\u5230\u6700\u7ec8\u9500\u6bc1\u7684\u6574\u4e2a\u8fc7\u7a0b\u3002<\/p>\n<h3>2.2 Bean\u7684\u58f0\u660e\u5468\u671f\u4e4b5\u6b65<\/h3>\n<p>Bean\u2f63\u547d\u5468\u671f\u53ef\u4ee5\u7c97\u7565\u7684\u5212\u5206\u4e3a\u4e94\u2f24\u6b65&#xff1a;<\/p>\n<ul>\n<li>\u7b2c\u2f00\u6b65&#xff1a;\u5b9e\u4f8b\u5316Bean<\/li>\n<li>\u7b2c\u2f06\u6b65&#xff1a;Bean\u5c5e\u6027\u8d4b\u503c<\/li>\n<li>\u7b2c\u4e09\u6b65&#xff1a;\u521d\u59cb\u5316Bean<\/li>\n<li>\u7b2c\u56db\u6b65&#xff1a;\u4f7f\u2f64Bean<\/li>\n<li>\u7b2c\u4e94\u6b65&#xff1a;\u9500\u6bc1Bean<\/li>\n<\/ul>\n<p>\u5b9a\u4e49\u2f00\u4e2aBean<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">User<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">;<\/span><\/p>\n<p> <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;1.\u5b9e\u4f8b\u5316Bean&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><\/p>\n<p> <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">setName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>name <span class=\"token operator\">&#061;<\/span> name<span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;2.Bean\u5c5e\u6027\u8d4b\u503c&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><\/p>\n<p> <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">initBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;3.\u521d\u59cb\u5316Bean&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><\/p>\n<p> <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">destroyBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;5.\u9500\u6bc1Bean&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u914d\u7f6e\u2f42\u4ef6\u4e2d\u7684init-method\u6307\u5b9a\u521d\u59cb\u5316\u2f45\u6cd5\u3002destroy-method\u6307\u5b9a\u9500\u6bc1\u2f45\u6cd5\u3002<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>userBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.User<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">init-method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>initBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">destroy-method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>destroyBean<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>name<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>zhangsan<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>bean<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h3>2.3 Bean\u7684\u58f0\u660e\u5468\u671f\u4e4b7\u6b65<\/h3>\n<p>\u5728\u4ee5\u4e0a\u76845\u6b65\u4e2d&#xff0c;\u7b2c3\u6b65\u662f\u521d\u59cb\u5316Bean&#xff0c;\u5982\u679c\u4f60\u8fd8\u60f3\u5728\u521d\u59cb\u5316\u524d\u548c\u521d\u59cb\u5316\u540e\u6dfb\u52a0\u4ee3\u7801&#xff0c;\u53ef\u4ee5\u52a0\u2f0a\u201cBean\u540e\u5904\u7406\u5668\u201d\u3002<br \/>\n\u7f16\u5199\u2f00\u4e2a\u7c7b\u5b9e\u73b0BeanPostProcessor\u7c7b&#xff0c;\u5e76\u4e14\u91cd\u5199before\u548cafter\u2f45\u6cd5&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LogBeanPostProcessor<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">BeanPostProcessor<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Object<\/span> <span class=\"token function\">postProcessBeforeInitialization<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Object<\/span> bean<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> beanName<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">BeansException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Bean\u540e\u5904\u7406\u5668\u7684before\u2f45\u6cd5\u6267\u2f8f&#xff0c;\u5373\u5c06\u5f00\u59cb\u521d\u59cb\u5316&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token keyword\">return<\/span> bean<span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><\/p>\n<p> <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Object<\/span> <span class=\"token function\">postProcessAfterInitialization<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Object<\/span> bean<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> beanName<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">BeansException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Bean\u540e\u5904\u7406\u5668\u7684after\u2f45\u6cd5\u6267\u2f8f&#xff0c;\u5df2\u5b8c\u6210\u521d\u59cb\u5316&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token keyword\">return<\/span> bean<span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728spring.xml\u2f42\u4ef6\u4e2d\u914d\u7f6e\u201cBean\u540e\u5904\u7406\u5668\u201d&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.LogBeanPostProcessor<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;\u5728spring.xml\u2f42\u4ef6\u4e2d\u914d\u7f6e\u7684Bean\u540e\u5904\u7406\u5668\u5c06\u4f5c\u2f64\u4e8e\u5f53\u524d\u914d\u7f6e\u2f42\u4ef6\u4e2d\u6240\u6709\u7684Bean\u3002<\/p>\n<h2>\u4e09\u3001GoF\u4e4b\u5de5\u5382\u6a21\u5f0f<\/h2>\n<p>GoF23\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u53ef\u5206\u4e3a\u4e09\u2f24\u7c7b&#xff1a;<\/p>\n<ul>\n<li>\u521b\u5efa\u578b&#xff08;5\u4e2a&#xff09;&#xff1a;\u89e3\u51b3\u5bf9\u8c61\u521b\u5efa\u95ee\u9898\u3002\n<ul>\n<li>\u5355\u4f8b\u6a21\u5f0f<\/li>\n<li>\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f<\/li>\n<li>\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f<\/li>\n<li>\u5efa\u9020\u8005\u6a21\u5f0f<\/li>\n<li>\u539f\u578b\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u7ed3\u6784\u578b&#xff08;7\u4e2a&#xff09;&#xff1a;\u2f00\u4e9b\u7c7b\u6216\u5bf9\u8c61\u7ec4\u5408\u5728\u2f00\u8d77\u7684\u7ecf\u5178\u7ed3\u6784\u3002\n<ul>\n<li>\u4ee3\u7406\u6a21\u5f0f<\/li>\n<li>\u88c5\u9970\u6a21\u5f0f<\/li>\n<li>\u9002\u914d\u5668\u6a21\u5f0f<\/li>\n<li>\u7ec4\u5408\u6a21\u5f0f<\/li>\n<li>\u4eab\u5143\u6a21\u5f0f<\/li>\n<li>\u5916\u89c2\u6a21\u5f0f<\/li>\n<li>\u6865\u63a5\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u2f8f\u4e3a\u578b&#xff08;11\u4e2a&#xff09;&#xff1a;\u89e3\u51b3\u7c7b\u6216\u5bf9\u8c61\u4e4b\u95f4\u7684\u4ea4\u4e92\u95ee\u9898\u3002\n<ul>\n<li>\u7b56\u7565\u6a21\u5f0f<\/li>\n<li>\u6a21\u677f\u2f45\u6cd5\u6a21\u5f0f<\/li>\n<li>\u8d23\u4efb\u94fe\u6a21\u5f0f<\/li>\n<li>\u89c2\u5bdf\u8005\u6a21\u5f0f<\/li>\n<li>\u8fed\u4ee3\u2f26\u6a21\u5f0f<\/li>\n<li>\u547d\u4ee4\u6a21\u5f0f<\/li>\n<li>\u5907\u5fd8\u5f55\u6a21\u5f0f<\/li>\n<li>\u72b6\u6001\u6a21\u5f0f<\/li>\n<li>\u8bbf\u95ee\u8005\u6a21\u5f0f<\/li>\n<li>\u4e2d\u4ecb\u8005\u6a21\u5f0f<\/li>\n<li>\u89e3\u91ca\u5668\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u2f2f\u2f1a\u6a21\u5f0f\u662f\u89e3\u51b3\u5bf9\u8c61\u521b\u5efa\u95ee\u9898\u7684&#xff0c;\u6240\u4ee5\u2f2f\u2f1a\u6a21\u5f0f\u5c5e\u4e8e\u521b\u5efa\u578b\u8bbe\u8ba1\u6a21\u5f0f,Spring\u6846\u67b6\u5e95\u5c42\u4f7f\u2f64\u4e86\u2f24\u91cf\u7684\u2f2f\u2f1a\u6a21\u5f0f\u3002<\/p>\n<h3>3.1 \u5de5\u5382\u6a21\u5f0f\u7684\u4e09\u79cd\u5f62\u6001<\/h3>\n<p>\u2f2f\u2f1a\u6a21\u5f0f\u901a\u5e38\u6709\u4e09\u79cd\u5f62\u6001&#xff1a;<\/p>\n<ul>\n<li>\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f&#xff08;Simple Factory&#xff09;&#xff1a;\u4e0d\u5c5e\u4e8e23\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u2f00\u3002\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f\u2f1c\u53eb\u505a&#xff1a;\u9759\u6001 \u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u3002\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f\u662f\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u7684\u2f00\u79cd\u7279\u6b8a\u5b9e\u73b0\u3002<\/li>\n<li>\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f&#xff08;Factory Method&#xff09;&#xff1a;\u662f23\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u2f00\u3002<\/li>\n<li>\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f&#xff08;Abstract Factory&#xff09;&#xff1a;\u662f23\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u2f00\u3002<\/li>\n<\/ul>\n<h3>3.2 \u7b80\u5355\u5de5\u5382\u6a21\u5f0f<\/h3>\n<p>\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f\u7684\u2ec6\u2f8a\u5305\u62ec\u4e09\u4e2a&#xff1a;<\/p>\n<ul>\n<li>\u62bd\u8c61\u4ea7\u54c1 \u2ec6\u2f8a<\/li>\n<li>\u5177\u4f53\u4ea7\u54c1 \u2ec6\u2f8a<\/li>\n<li>\u2f2f\u2f1a\u7c7b \u2ec6\u2f8a<\/li>\n<\/ul>\n<p>\u4e3e\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50&#xff1a;<br \/>\n\u4f60\u6709\u4e00\u5bb6\u5175\u5de5\u5382\u53ef\u4ee5\u5236\u4f5c\u5766\u514b\u3001\u98de\u673a\u3001\u5927\u70ae\u3002\u5982\u679c\u4f60\u4e0d\u91c7\u7528\u4efb\u4f55\u8bbe\u8ba1\u6a21\u5f0f&#xff0c;\u4f60\u9700\u8981\u9020\u591a\u5bb6\u5175\u5de5\u5382\u6765\u6ee1\u8db3\u6d88\u8d39\u8005&#xff1b;\u540c\u65f6\u5982\u679c\u4f60\u53ef\u4ee5\u5236\u9020\u5bfc\u5f39&#xff0c;\u90a3\u4e48\u5c31\u9700\u8981\u4f60\u7684\u5175\u5de5\u5382\u90fd\u505a\u51fa\u6539\u53d8&#xff0c;\u6bd4\u8f83\u9ebb\u70e6&#xff1b;\u800c\u4e14\u4f60\u7684\u5236\u4f5c\u548c\u9500\u552e\u662f\u6405\u548c\u5728\u4e00\u8d77\u7684&#xff0c;\u6bd4\u8f83\u6df7\u4e71\u3002<br \/>\n\u5982\u679c\u4f60\u91c7\u7528\u7b80\u5355\u5de5\u5382\u6a21\u5f0f&#xff0c;\u4f60\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u201c\u62bd\u8c61\u6b66\u5668\u57fa\u7c7b\u201d&#xff08;\u89c4\u5b9a\u6b66\u5668\u5177\u6709\u653b\u51fb\u884c\u4e3a&#xff09;&#xff1b;\u518d\u901a\u8fc7\u62bd\u8c61\u6b66\u5668\u57fa\u7c7b\u5b9a\u4e49\u4e09\u4e2a\u201c\u4ea7\u54c1\u7c7b\u201d\u5766\u514b\u7c7b\u3001\u98de\u673a\u7c7b\u3001\u5927\u70ae\u7c7b&#xff1b;\u6700\u540e\u5173\u952e\u5c31\u662f\u521b\u5efa\u201c\u6b66\u5668\u5de5\u5382\u7c7b\u201d&#xff0c;\u4f60\u8f93\u5165\u4ec0\u4e48\u6b66\u5668&#xff0c;\u5b83\u5c31\u751f\u4ea7\u4ec0\u4e48\u6b66\u5668\u3002<\/p>\n<p>\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f\u7684\u4f18\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u5ba2\u6237\u7aef\u7a0b\u5e8f\u4e0d\u9700\u8981\u5173\u2f3c\u5bf9\u8c61\u7684\u521b\u5efa\u7ec6\u8282&#xff0c;\u9700\u8981\u54ea\u4e2a\u5bf9\u8c61\u65f6&#xff0c;\u53ea\u9700\u8981\u5411\u2f2f\u2f1a\u7d22\u8981\u5373\u53ef&#xff0c;\u521d\u6b65\u5b9e\u73b0\u4e86\u8d23\u4efb\u7684\u5206\u79bb\u3002\u5ba2\u6237\u7aef\u53ea\u8d1f\u8d23\u201c\u6d88\u8d39\u201d&#xff0c;\u2f2f\u2f1a\u8d1f\u8d23\u201c\u2f63\u4ea7\u201d\u3002\u2f63\u4ea7\u548c\u6d88\u8d39\u5206\u79bb\u3002<\/li>\n<\/ul>\n<p>\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f\u7684\u7f3a\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u7f3a\u70b91&#xff1a;\u2f2f\u2f1a\u7c7b\u96c6\u4e2d\u4e86\u6240\u6709\u4ea7\u54c1\u7684\u521b\u9020\u903b\u8f91&#xff0c;\u5f62\u6210\u2f00\u4e2a\u2f46\u6240\u4e0d\u77e5\u7684\u5168\u80fd\u7c7b&#xff0c;\u6709\u2f08\u628a\u5b83\u53eb\u505a\u4e0a\u5e1d\u7c7b\u3002\u663e\u7136\u2f2f\u2f1a\u7c7b\u2fae\u5e38\u5173\u952e&#xff0c;\u4e0d\u80fd\u51fa\u95ee\u9898&#xff0c;\u2f00\u65e6\u51fa\u95ee\u9898&#xff0c;\u6574\u4e2a\u7cfb\u7edf\u762b\u75ea\u3002<\/li>\n<li>\u7f3a\u70b92&#xff1a;\u4e0d\u7b26\u5408OCP\u5f00\u95ed\u539f\u5219&#xff0c;\u5728\u8fdb\u2f8f\u7cfb\u7edf\u6269\u5c55\u65f6&#xff0c;\u9700\u8981\u4fee\u6539\u2f2f\u2f1a\u7c7b\u3002<\/li>\n<\/ul>\n<h3>3.3 \u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f<\/h3>\n<p>\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u7684\u2ec6\u2f8a\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\u62bd\u8c61\u4ea7\u54c1\u2ec6\u2f8a<\/li>\n<li>\u5177\u4f53\u4ea7\u54c1\u2ec6\u2f8a<\/li>\n<li>\u62bd\u8c61\u2f2f\u2f1a\u2ec6\u2f8a<\/li>\n<li>\u5177\u4f53\u2f2f\u2f1a\u2ec6\u2f8a<\/li>\n<\/ul>\n<p>\u4e3e\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50&#xff1a;<br \/>\n\u73b0\u5728\u5175\u5de5\u5382\u53ef\u4ee5\u5236\u9020\u624b\u96f7\u3001\u624b\u67aa\u8fd9\u4e9b\u5c0f\u6b66\u5668\u3002\u5982\u679c\u6211\u4eec\u8fd8\u662f\u91c7\u7528\u7b80\u5355\u5de5\u5382\u6a21\u5f0f&#xff0c;\u9664\u4e86\u6dfb\u52a0\u5177\u4f53\u7684\u4ea7\u54c1\u7c7b&#xff0c;\u8fd8\u8981\u66f4\u6539\u6700\u540e\u7684\u5de5\u5382\u7c7b&#xff0c;\u4f7f\u5f97\u5de5\u5382\u7c7b\u53d8\u5f97\u6bd4\u8f83\u81c3\u80bf\u3002<br \/>\n\u91c7\u7528\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u6211\u4eec\u9664\u4e86\u6dfb\u52a0\u5177\u4f53\u7684\u4ea7\u54c1\u7c7b&#xff0c;\u8fd8\u6709\u5c31\u662f\u6dfb\u52a0\u62bd\u8c61\u5de5\u5382\u7c7b&#xff08;\u89c4\u5b9a\u53ef\u4ee5\u751f\u4ea7\u6b66\u5668&#xff09;&#xff0c;\u518d\u6839\u636e\u5b83\u521b\u5efa\u5177\u4f53\u5de5\u5382\u7c7b\u5c0f\u578b\u6b66\u5668\u7c7b\u3001\u5927\u578b\u6b66\u5668\u7c7b<\/p>\n<p>\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u7684\u4f18\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u2f00\u4e2a\u8c03\u2f64\u8005\u60f3\u521b\u5efa\u2f00\u4e2a\u5bf9\u8c61&#xff0c;\u53ea\u8981\u77e5\u9053\u5176\u540d\u79f0\u5c31\u53ef\u4ee5\u4e86\u3002<\/li>\n<li>\u6269\u5c55\u6027\u2fbc&#xff0c;\u5982\u679c\u60f3\u589e\u52a0\u2f00\u4e2a\u4ea7\u54c1&#xff0c;\u53ea\u8981\u6269\u5c55\u2f00\u4e2a\u2f2f\u2f1a\u7c7b\u5c31\u53ef\u4ee5\u3002<\/li>\n<li>\u5c4f\u853d\u4ea7\u54c1\u7684\u5177\u4f53\u5b9e\u73b0&#xff0c;\u8c03\u2f64\u8005\u53ea\u5173\u2f3c\u4ea7\u54c1\u7684\u63a5\u2f1d\u3002<br \/>\n\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u7684\u7f3a\u70b9&#xff1a;<\/li>\n<li>\u6bcf\u6b21\u589e\u52a0\u2f00\u4e2a\u4ea7\u54c1\u65f6&#xff0c;\u90fd\u9700\u8981\u589e\u52a0\u2f00\u4e2a\u5177\u4f53\u7c7b\u548c\u5bf9\u8c61\u5b9e\u73b0\u2f2f\u2f1a&#xff0c;\u4f7f\u5f97\u7cfb\u7edf\u4e2d\u7c7b\u7684\u4e2a\u6570\u6210\u500d\u589e\u52a0&#xff0c;\u5728\u2f00\u5b9a\u7a0b\u5ea6\u4e0a\u589e\u52a0\u4e86\u7cfb\u7edf\u7684\u590d\u6742\u5ea6&#xff0c;\u540c\u65f6\u4e5f\u589e\u52a0\u4e86\u7cfb\u7edf\u5177\u4f53\u7c7b\u7684\u4f9d\u8d56\u3002\u8fd9\u5e76\u4e0d\u662f\u4ec0\u4e48\u597d\u4e8b\u3002<\/li>\n<\/ul>\n<h3>3.4 \u62bd\u8c61\u5de5\u5382\u6a21\u5f0f &#xff08;\u4e86\u89e3&#xff09;<\/h3>\n<p>\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u76f8\u5bf9\u4e8e\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u6765\u8bf4&#xff0c;\u5c31\u662f\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u662f\u9488\u5bf9\u2f00\u4e2a\u4ea7\u54c1\u7cfb\u5217\u7684&#xff0c;\u2f7d\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u662f\u9488\u5bf9\u591a\u4e2a\u4ea7\u54c1\u7cfb\u5217\u7684&#xff0c;\u5373\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u662f\u2f00\u4e2a\u4ea7\u54c1\u7cfb\u5217\u2f00\u4e2a\u2f2f\u2f1a\u7c7b&#xff0c;\u2f7d\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u662f\u591a\u4e2a\u4ea7\u54c1\u7cfb\u5217\u2f00\u4e2a\u2f2f\u2f1a\u7c7b\u3002<br \/>\n\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u7279\u70b9&#xff1a;\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u662f\u6240\u6709\u5f62\u6001\u7684\u2f2f\u2f1a\u6a21\u5f0f\u4e2d\u6700\u4e3a\u62bd\u8c61\u548c\u6700\u5177\u2f00\u822c\u6027\u7684\u2f00\u79cd\u5f62\u6001\u3002\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u662f\u6307\u5f53\u6709\u591a\u4e2a\u62bd\u8c61\u2ec6\u2f8a\u65f6&#xff0c;\u4f7f\u2f64\u7684\u2f00\u79cd\u2f2f\u2f1a\u6a21\u5f0f\u3002\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u53ef\u4ee5\u5411\u5ba2\u6237\u7aef\u63d0\u4f9b\u2f00\u4e2a\u63a5\u2f1d&#xff0c;\u4f7f\u5ba2\u6237\u7aef\u5728\u4e0d\u5fc5\u6307\u5b9a\u4ea7\u54c1\u7684\u5177\u4f53\u7684\u60c5\u51b5\u4e0b&#xff0c;\u521b\u5efa\u591a\u4e2a\u4ea7\u54c1\u65cf\u4e2d\u7684\u4ea7\u54c1\u5bf9\u8c61\u3002\u5b83\u6709\u591a\u4e2a\u62bd\u8c61\u4ea7\u54c1\u7c7b&#xff0c;\u6bcf\u4e2a\u62bd\u8c61\u4ea7\u54c1\u7c7b\u53ef\u4ee5\u6d3e\u2f63\u51fa\u591a\u4e2a\u5177\u4f53\u4ea7\u54c1\u7c7b&#xff0c;\u2f00\u4e2a\u62bd\u8c61\u2f2f\u2f1a\u7c7b&#xff0c;\u53ef\u4ee5\u6d3e\u2f63\u51fa\u591a\u4e2a\u5177\u4f53\u2f2f\u2f1a\u7c7b&#xff0c;\u6bcf\u4e2a\u5177\u4f53\u2f2f\u2f1a\u7c7b\u53ef\u4ee5\u521b\u5efa\u591a\u4e2a\u5177\u4f53\u4ea7\u54c1\u7c7b\u7684\u5b9e\u4f8b\u3002\u6bcf\u2f00\u4e2a\u6a21\u5f0f\u90fd\u662f\u9488\u5bf9\u2f00\u5b9a\u95ee\u9898\u7684\u89e3\u51b3\u2f45\u6848&#xff0c;\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f\u9488\u5bf9\u7684\u662f\u2f00\u4e2a\u4ea7\u54c1\u7b49\u7ea7\u7ed3\u6784&#xff1b;\u2f7d\u62bd\u8c61\u2f2f\u2f1a\u6a21\u5f0f\u9488\u5bf9\u7684\u662f\u591a\u4e2a\u4ea7\u54c1\u7b49\u7ea7\u7ed3\u679c\u3002<\/p>\n<h3>3.5 \u4e09\u79cd\u5de5\u5382\u6a21\u5f0f\u5bf9\u6bd4<\/h3>\n<table>\n<tr>\u6a21\u5f0f\u6bd4\u55bb\u7279\u70b9<\/tr>\n<tbody>\n<tr>\n<td>\u7b80\u5355\u5de5\u5382<\/td>\n<td>\u4e2d\u592e\u5175\u5de5\u5382<\/td>\n<td>\u4e00\u4e2a\u5de5\u5382\u751f\u4ea7\u6240\u6709\u4ea7\u54c1&#xff0c;\u901a\u8fc7\u53c2\u6570\u533a\u5206<\/td>\n<\/tr>\n<tr>\n<td>\u5de5\u5382\u65b9\u6cd5<\/td>\n<td>\u5206\u6b66\u5668\u4e13\u5c5e\u5175\u5de5\u5382<\/td>\n<td>\u4e00\u4e2a\u4ea7\u54c1\u4e00\u4e2a\u5de5\u5382&#xff0c;\u5173\u6ce8\u4ea7\u54c1\u6269\u5c55<\/td>\n<\/tr>\n<tr>\n<td>\u62bd\u8c61\u5de5\u5382<\/td>\n<td>\u5404\u5175\u79cd\u6b66\u5668\u5175\u5de5\u5382<\/td>\n<td>\u4e00\u4e2a\u5de5\u5382\u751f\u4ea7\u4e00\u5957\u4ea7\u54c1&#xff0c;\u5173\u6ce8\u4ea7\u54c1\u65cf\u6269\u5c55<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u56db\u3001Bean\u7684\u5b9e\u4f8b\u5316\u65b9\u6cd5<\/h2>\n<p>Spring\u4e3aBean\u63d0\u4f9b\u4e86\u591a\u79cd\u5b9e\u4f8b\u5316\u2f45\u5f0f&#xff0c;\u901a\u5e38\u5305\u62ec4\u79cd\u2f45\u5f0f\u3002<\/p>\n<ul>\n<li>\u901a\u8fc7\u6784\u9020\u2f45\u6cd5\u5b9e\u4f8b\u5316<\/li>\n<li>\u901a\u8fc7\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f\u5b9e\u4f8b\u5316<\/li>\n<li>\u901a\u8fc7factory-bean\u5b9e\u4f8b\u5316<\/li>\n<li>\u901a\u8fc7FactoryBean\u63a5\u2f1d\u5b9e\u4f8b\u5316<\/li>\n<\/ul>\n<h3>4.1 \u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u5b9e\u4f8b\u5316<\/h3>\n<p>\u6211\u4eec\u4e4b\u524d\u2f00\u76f4\u4f7f\u2f64\u7684\u5c31\u662f\u8fd9\u79cd\u2f45\u5f0f\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;\u4f1a\u8c03\u2f64Bean\u7684\u2f46\u53c2\u6570\u6784\u9020\u2f45\u6cd5\u3002<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">User<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;User\u7c7b\u7684\u2f46\u53c2\u6570\u6784\u9020\u2f45\u6cd5\u6267\u2f8f\u3002&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token prolog\">&lt;?xml version&#061;&#034;1.0&#034; encoding&#061;&#034;UTF-8&#034;?&gt;<\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>beans<\/span> <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/www.springframework.org\/schema\/beans<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>xsi<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/www.w3.org\/2001\/XMLSchema-instance<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n <span class=\"token attr-name\"><span class=\"token namespace\">xsi:<\/span>schemaLocation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/www.springframework.org\/schema\/beans htt<br \/>\np:\/\/www.springframework.org\/schema\/beans\/spring-beans.xsd<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p> <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>userBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.User<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>beans<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u5f53\u6211\u4eec\u4f7f\u7528User user &#061; applicationContext.getBean(&#034;userBean&#034;, User.class);\u5b9e\u4f8b\u5316\u65f6\u4f1a\u8c03\u2f64Bean\u7684\u2f46\u53c2\u6570\u6784\u9020\u2f45\u6cd5&#xff0c;\u63a7\u5236\u53f0\u4f1a\u6253\u5370\u201cUser\u7c7b\u7684\u2f46\u53c2\u6570\u6784\u9020\u2f45\u6cd5\u6267\u2f8f\u3002\u201d\u3002<\/p>\n<h3>4.2 \u901a\u8fc7\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u5b9e\u4f8b\u5316<\/h3>\n<p>\u7b2c\u2f00\u6b65&#xff1a;\u5b9a\u4e49\u2f00\u4e2aBean<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Vip<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u7b2c\u2f06\u6b65&#xff1a;\u7f16\u5199\u7b80\u5355\u2f2f\u2f1a\u6a21\u5f0f\u5f53\u4e2d\u7684\u2f2f\u2f1a\u7c7b<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">VipFactory<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token class-name\">Vip<\/span> <span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Vip<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u7b2c\u4e09\u6b65&#xff1a;\u5728Spring\u914d\u7f6e\u2f42\u4ef6\u4e2d\u6307\u5b9a\u521b\u5efa\u8be5Bean\u7684\u2f45\u6cd5&#xff08;\u4f7f\u2f64factory-method\u5c5e\u6027\u6307\u5b9a&#xff09;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>vipBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.VipFactory<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">factory-method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>get<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>\u901a\u8fc7Vip vip &#061; applicationContext.getBean(&#034;vipBean&#034;, Vip.class);\u8c03\u7528\u3002<\/p>\n<h3>4.3 \u901a\u8fc7factory-bean\u5b9e\u4f8b\u5316&#xff08;\u2f2f\u2f1a\u2f45\u6cd5\u6a21\u5f0f&#xff09;<\/h3>\n<p>\u7b2c\u2f00\u6b65&#xff1a;\u5b9a\u4e49\u2f00\u4e2aBean<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Order<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u7b2c\u2f06\u6b65&#xff1a;\u5b9a\u4e49\u5177\u4f53\u2f2f\u2f1a\u7c7b&#xff0c;\u2f2f\u2f1a\u7c7b\u4e2d\u5b9a\u4e49\u5b9e\u4f8b\u2f45\u6cd5<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">OrderFactory<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Order<\/span> <span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Order<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u7b2c\u4e09\u6b65&#xff1a;\u5728Spring\u914d\u7f6e\u2f42\u4ef6\u4e2d\u6307\u5b9afactory-bean\u4ee5\u53cafactory-method<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>orderFactory<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.OrderFactory<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>orderBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">factory-bean<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>orderFactory<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">factory-method<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>get<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>\u901a\u8fc7Order orderBean &#061; applicationContext.getBean(&#034;orderBean&#034;, Order.class);\u8c03\u7528<\/p>\n<h3>4.4 \u901a\u8fc7FactoryBean\u63a5\u53e3\u5b9e\u4f8b\u5316<\/h3>\n<p>\u4ee5\u4e0a\u7684\u7b2c\u4e09\u79cd\u2f45\u5f0f\u4e2d&#xff0c;factory-bean\u662f\u6211\u4eec\u2f83\u5b9a\u4e49\u7684&#xff0c;factory-method\u4e5f\u662f\u6211\u4eec\u2f83\u2f30\u5b9a\u4e49\u7684\u3002<br \/>\n\u5728Spring\u4e2d&#xff0c;\u5f53\u4f60\u7f16\u5199\u7684\u7c7b\u76f4\u63a5\u5b9e\u73b0FactoryBean\u63a5\u2f1d\u4e4b\u540e&#xff0c;factory-bean\u4e0d\u9700\u8981\u6307\u5b9a\u4e86&#xff0c;factorymethod\u4e5f\u4e0d\u9700\u8981\u6307\u5b9a\u4e86\u3002factory-bean\u4f1a\u2f83\u52a8\u6307\u5411\u5b9e\u73b0FactoryBean\u63a5\u2f1d\u7684\u7c7b&#xff0c;factory-method\u4f1a\u2f83\u52a8\u6307\u5411getObject()\u2f45\u6cd5\u3002<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Person<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u7b2c\u2f06\u6b65&#xff1a;\u7f16\u5199\u2f00\u4e2a\u7c7b\u5b9e\u73b0FactoryBean\u63a5\u2f1d<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PersonFactoryBean<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">FactoryBean<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ \u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56de\u771f\u6b63\u8981\u7684\u5bf9\u8c61<\/span><br \/>\n <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Person<\/span> <span class=\"token function\">getObject<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><\/p>\n<p> <span class=\"token comment\">\/\/ \u8fd4\u56de\u8981\u521b\u5efa\u7684\u7c7b\u578b<\/span><br \/>\n <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">getObjectType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><\/p>\n<p> <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">boolean<\/span> <span class=\"token function\">isSingleton<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token comment\">\/\/ true\u8868\u793a\u5355\u4f8b<\/span><br \/>\n <span class=\"token comment\">\/\/ false\u8868\u793a\u539f\u578b<\/span><br \/>\n <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u7b2c\u4e09\u6b65&#xff1a;\u5728Spring\u914d\u7f6e\u2f42\u4ef6\u4e2d\u914d\u7f6eFactoryBean<\/p>\n<p><span class=\"token operator\">&lt;<\/span>bean id<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;personBean&#034;<\/span> <span class=\"token keyword\">class<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;com.powernode.spring6.bean.PersonFactoryBean&#034;<\/span><span class=\"token operator\">\/<\/span><span class=\"token operator\">&gt;<\/span><\/p>\n<p>FactoryBean\u5728Spring\u4e2d\u662f\u2f00\u4e2a\u63a5\u2f1d\u3002\u88ab\u79f0\u4e3a\u201c\u2f2f\u2f1aBean\u201d\u3002\u201c\u2f2f\u2f1aBean\u201d\u662f\u2f00\u79cd\u7279\u6b8a\u7684Bean\u3002\u6240\u6709\u7684\u201c\u2f2f\u2f1aBean\u201d\u90fd\u662f\u2f64\u6765\u534f\u52a9Spring\u6846\u67b6\u6765\u521b\u5efa\u5176\u4ed6Bean\u5bf9\u8c61\u7684\u3002<\/p>\n<h3>4.5 BeanFactory\u548cFactoryBean\u7684\u533a\u522b<\/h3>\n<h4>4.5.1 BeanFactory&#xff08;Spring \u7684\u5bf9\u8c61\u5927\u7ba1\u5bb6&#xff09;<\/h4>\n<p>Spring IoC\u5bb9\u5668\u7684\u9876\u7ea7\u5bf9\u8c61&#xff0c;BeanFactory\u88ab\u7ffb\u8bd1\u4e3a\u201cBean\u2f2f\u2f1a\u201d&#xff0c;\u5728Spring\u7684IoC\u5bb9\u5668\u4e2d&#xff0c;\u8d1f\u8d23 Bean \u7684\u521b\u5efa\u3001\u914d\u7f6e\u3001\u7ec4\u88c5\u548c\u7ba1\u7406\u751f\u547d\u5468\u671f\u3002\u3002BeanFactory\u662f\u2f2f\u2f1a\u3002\u6211\u4eec\u901a\u5e38\u4e0d\u4f1a\u76f4\u63a5\u64cd\u4f5c BeanFactory&#xff0c;\u800c\u662f\u7528\u5b83\u7684\u9ad8\u7ea7\u7248\u672c ApplicationContext&#xff08;\u5b83\u7ee7\u627f\u4e86 BeanFactory&#xff0c;\u5e76\u6dfb\u52a0\u4e86\u66f4\u591a\u4f01\u4e1a\u7ea7\u529f\u80fd&#xff09;\u3002<\/p>\n<p><span class=\"token comment\">\/\/ 1. \u521b\u5efa BeanFactory&#xff08;\u5efa\u7acb\u4eba\u4e8b\u7ba1\u7406\u7cfb\u7edf&#xff09;<\/span><br \/>\n<span class=\"token class-name\">DefaultListableBeanFactory<\/span> factory <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">DefaultListableBeanFactory<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 2. \u6ce8\u518c Bean \u5b9a\u4e49&#xff08;\u5236\u5b9a\u62db\u8058\u5c97\u4f4d\u8bf4\u660e\u4e66&#xff09;<\/span><br \/>\n<span class=\"token class-name\">RootBeanDefinition<\/span> beanDef <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RootBeanDefinition<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">UserServiceImpl<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nfactory<span class=\"token punctuation\">.<\/span><span class=\"token function\">registerBeanDefinition<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;userService&#034;<\/span><span class=\"token punctuation\">,<\/span> beanDef<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 3. \u83b7\u53d6 Bean&#xff08;\u62db\u4eba\u5230\u5c97&#xff09;<\/span><br \/>\n<span class=\"token class-name\">UserService<\/span> service <span class=\"token operator\">&#061;<\/span> factory<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;userService&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5176\u4f53\u73b0\u4e86\u5de5\u5382\u6a21\u5f0f\u3001\u5355\u4f8b\u6a21\u5f0f\u3001\u63a7\u5236\u53cd\u8f6c&#xff08;IoC&#xff09;\u3001\u4f9d\u8d56\u6ce8\u5165\u7b49\u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n<h4>4.5.2 FactoryBean&#xff08;\u5199\u7684\u4e00\u4e2a\u5de5\u5177\u7c7b&#xff0c;\u7528\u4e8e\u521b\u5efa\u590d\u6742\u5bf9\u8c61&#xff09;<\/h4>\n<p>FactoryBean&#xff1a;\u5b83\u662f\u2f00\u4e2aBean&#xff0c;\u662f\u2f00\u4e2a\u80fd\u591f\u8f85\u52a9Spring\u5b9e\u4f8b\u5316\u5176\u5b83Bean\u5bf9\u8c61\u7684\u2f00\u4e2aBean\u3002FactoryBean \u672c\u8eab\u4e5f\u662f\u88ab BeanFactory \u7ba1\u7406\u7684&#xff01;<br \/>\n\u5728Spring\u4e2d&#xff0c;Bean\u53ef\u4ee5\u5206\u4e3a\u4e24\u7c7b&#xff1a;<\/p>\n<ul>\n<li>\u666e\u901aBean<\/li>\n<li>\u2f2f\u2f1aBean&#xff08;\u8bb0\u4f4f&#xff1a;\u2f2f\u2f1aBean\u4e5f\u662f\u2f00\u79cdBean&#xff0c;\u53ea\u4e0d\u8fc7\u8fd9\u79cdBean\u2f50\u8f83\u7279\u6b8a&#xff0c;\u5b83\u53ef\u4ee5\u8f85\u52a9Spring\u5b9e\u4f8b\u5316\u5176\u5b83Bean\u5bf9\u8c61\u3002&#xff09;<\/li>\n<\/ul>\n<h2>\u4e94\u3001Bean\u7684\u5faa\u73af\u4f9d\u8d56\u95ee\u9898<\/h2>\n<p>A\u5bf9\u8c61\u4e2d\u6709B\u5c5e\u6027\u3002B\u5bf9\u8c61\u4e2d\u6709A\u5c5e\u6027\u3002\u8fd9\u5c31\u662f\u5faa\u73af\u4f9d\u8d56\u3002<br \/>\n\u4f8b&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Husband<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">Wife<\/span> wife<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Wife<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">;<\/span><br \/>\n <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">Husband<\/span> husband<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>5.1 singleton\u4e0b\u7684set\u6ce8\u5165\u4ea7\u751f\u7684\u5faa\u73af\u4f9d\u8d56<\/h3>\n<p>\u5728singleton &#043; set\u6ce8\u2f0a\u7684\u60c5\u51b5\u4e0b&#xff0c;\u5faa\u73af\u4f9d\u8d56\u662f\u6ca1\u6709\u95ee\u9898\u7684\u3002Spring\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<br \/>\nHusband\u548cWife\u7c7b\u4e2d\u91c7\u7528\u7684set\u6ce8\u5165&#xff0c;public void setWife(Wife wife){this.wife &#061; wife;}\u548cpublic void setHusband(Husband husband){this.husband &#061; husband;}<br \/>\n\u5728spring.xml\u6587\u4ef6\u4e2d&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>husbandBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.Husband<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">scope<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>singleton<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>name<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5f20\u4e09<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wife<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ref<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wifeBean<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>bean<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wifeBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.Wife<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">scope<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>singleton<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>name<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u2f29\u82b1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>husband<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ref<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>husbandBean<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>bean<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h3>5.2 prototype\u4e0b\u7684set\u6ce8\u5165\u4ea7\u751f\u7684\u5faa\u73af\u4f9d\u8d56<\/h3>\n<p>\u5728prototype &#043; set\u6ce8\u2f0a\u7684\u60c5\u51b5\u4e0b,\u4f1a\u4ea7\u2f63\u5faa\u73af\u4f9d\u8d56&#xff0c;Spring\u2f46\u6cd5\u89e3\u51b3&#xff0c;\u4f1a\u51fa\u73b0BeanCurrentlyInCreationException\u5f02\u5e38\u3002&#xff08;\u5982\u679c\u5176\u4e2d\u2f00\u4e2a\u662fsingleton&#xff0c;\u53e6\u2f00\u4e2a\u662fprototype&#xff0c;\u662f\u6ca1\u6709\u95ee\u9898\u7684\u3002&#xff09;<br \/>\n\u5728spring.xml\u6587\u4ef6\u4e2d&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>husbandBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.Husband<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">scope<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>prototype<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>name<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5f20\u4e09<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wife<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ref<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wifeBean<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>bean<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wifeBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean.Wife<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">scope<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>prototype<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>name<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u2f29\u82b1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>property<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>husband<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ref<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>husbandBean<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>bean<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h3>5.3 singleton\u4e0b\u7684\u6784\u9020\u6ce8\u5165\u4ea7\u751f\u7684\u5faa\u73af\u4f9d\u8d56<\/h3>\n<p>\u5728singleton&#043;\u6784\u9020\u6ce8\u5165\u7684\u60c5\u51b5\u4e0b&#xff0c;\u4f1a\u4ea7\u751f\u5faa\u73af\u4f9d\u8d56&#xff0c;Spring\u65e0\u6cd5\u89e3\u51b3\u3002\u56e0\u4e3a\u6784\u9020\u2f45\u6cd5\u6ce8\u2f0a\u4f1a\u5bfc\u81f4\u5b9e\u4f8b\u5316\u5bf9\u8c61\u7684\u8fc7\u7a0b\u548c\u5bf9\u8c61\u5c5e\u6027\u8d4b\u503c\u7684\u8fc7\u7a0b\u6ca1\u6709\u5206\u79bb\u5f00&#xff0c;\u5fc5\u987b\u5728\u2f00\u8d77\u5b8c\u6210\u5bfc\u81f4\u7684\u3002Husband\u548cWife\u7c7b\u4e2d\u91c7\u7528\u7684\u6784\u9020\u6ce8\u5165&#xff0c;public Husband(String name, Wife wife) { this.name &#061; name;this.wife &#061; wife;  }\u548cpublic Wife(String name, Husband husband) { this.name &#061; name;this.husband &#061; husband; }<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>hBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean2.Husband<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">scope<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>singleton<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>constructor-arg<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>name<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5f20\u4e09<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>constructor-arg<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wife<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ref<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wBean<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>bean<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>bean<\/span> <span class=\"token attr-name\">id<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>wBean<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>com.powernode.spring6.bean2.Wife<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">scope<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>singleton<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>constructor-arg<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>name<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u2f29\u82b1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>constructor-arg<\/span> <span class=\"token attr-name\">name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>husband<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ref<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>hBean<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>bean<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h3>5.4 Spring\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\u7684\u673a\u7406<\/h3>\n<p>Spring\u4e4b\u6240\u4ee5\u53ef\u4ee5\u89e3\u51b3set&#043;singleton\u6a21\u5f0f\u4e0b\u7684\u5faa\u73af\u4f9d\u8d56&#xff0c;\u662f\u56e0\u4e3a\u8fd9\u79cd\u2f45\u5f0f\u53ef\u4ee5\u505a\u5230\u5c06\u201c\u5b9e\u4f8b\u5316Bean\u201d\u548c\u201c\u7ed9Bean\u5c5e\u6027\u8d4b\u503c\u201d\u8fd9\u4e24\u4e2a\u52a8\u4f5c\u5206\u5f00\u53bb\u5b8c\u6210\u3002<br \/>\n\u5b9e\u4f8b\u5316Bean\u7684\u65f6\u5019&#xff1a;\u8c03\u2f64\u2f46\u53c2\u6570\u6784\u9020\u2f45\u6cd5\u6765\u5b8c\u6210\u3002\u6b64\u65f6\u53ef\u4ee5\u5148\u4e0d\u7ed9\u5c5e\u6027\u8d4b\u503c&#xff0c;\u53ef\u4ee5\u63d0\u524d\u5c06\u8be5Bean\u5bf9\u8c61\u201c\u66dd\u5149\u201d\u7ed9\u5916\u754c\u3002<br \/>\n\u7ed9Bean\u5c5e\u6027\u8d4b\u503c\u7684\u65f6\u5019&#xff1a;\u8c03\u2f64setter\u2f45\u6cd5\u6765\u5b8c\u6210\u3002<br \/>\n\u4e5f\u5c31\u662f\u8bf4&#xff0c;Bean\u90fd\u662f\u5355\u4f8b\u7684&#xff0c;\u6211\u4eec\u53ef\u4ee5\u5148\u628a\u6240\u6709\u7684\u5355\u4f8bBean\u5b9e\u4f8b\u5316\u51fa\u6765&#xff0c;\u653e\u5230\u2f00\u4e2a\u96c6\u5408\u5f53\u4e2d&#xff08;\u6211\u4eec\u53ef\u4ee5\u79f0\u4e4b\u4e3a\u7f13\u5b58&#xff09;&#xff0c;\u6240\u6709\u7684\u5355\u4f8bBean\u5168\u90e8\u5b9e\u4f8b\u5316\u5b8c\u6210\u4e4b\u540e&#xff0c;\u4ee5\u540e\u6211\u4eec\u518d\u6162\u6162\u7684\u8c03\u2f64setter\u2f45\u6cd5\u7ed9\u5c5e\u6027\u8d4b\u503c\u3002\u8fd9\u6837\u5c31\u89e3\u51b3\u4e86\u5faa\u73af\u4f9d\u8d56\u7684\u95ee\u9898\u3002<\/p>\n<p>\u6700\u540e\u611f\u8c22\u52a8\u529b\u8282\u70b9\u63d0\u4f9b\u7684\u4f18\u8d28\u5b66\u4e60\u8d44\u6e90&#xff0c;\u8ba9\u6211\u4eec\u5728\u6280\u672f\u9053\u8def\u4e0a\u80fd\u591f\u7ad9\u5728\u5de8\u4eba\u7684\u80a9\u8180\u4e0a\u7ee7\u7eed\u524d\u884c\u3002\u672c\u8d44\u6599\u4ec5\u4e3a\u5b66\u4e60\u8fc7\u7a0b\u7684\u526f\u4ea7\u54c1&#xff0c;\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u66f4\u591a\u540c\u6837\u5728\u52aa\u529b\u5b66\u4e60\u7684\u5f00\u53d1\u8005\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001Bean\u7684\u4f5c\u7528\u57df<br 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\/>\n\u5982\u679c\u60f3\u8ba9Spring\u7684Bean\u5bf9\u8c61\u4ee5\u591a\u4f8b\u7684\u5f62\u5f0f\u5b58\u5728&#xff0c;\u53ef\u4ee5\u5728bean\u6807\u7b7e\u4e2d\u6307\u5b9ascope\u5c5e\u6027\u7684\u503c\u4e3a&#xff1a;prototype&#xff0c;\u8fd9\u6837Spring\u4f1a\u5728\u6bcf\u2f00\u6b21\u6267\u2f8fgetBean()\u2f45\u6cd5\u7684\u65f6\u5019\u521b\u5efaBean\u5bf9\u8c61&amp;#xff0<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,101,292],"topic":[],"class_list":["post-73542","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-spring","tag-292"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Spring Bean 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