{"id":42089,"date":"2025-06-06T18:25:07","date_gmt":"2025-06-06T10:25:07","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/42089.html"},"modified":"2025-06-06T18:25:07","modified_gmt":"2025-06-06T10:25:07","slug":"java-%e4%be%9d%e8%b5%96%e6%b3%a8%e5%85%a5%e3%80%81%e6%8e%a7%e5%88%b6%e5%8f%8d%e8%bd%ac%e4%b8%8e%e9%9d%a2%e5%90%91%e5%88%87%e9%9d%a2%ef%bc%9a%e9%9d%a2%e8%af%95%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/42089.html","title":{"rendered":"Java 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class=\"token class-name\">UserService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">UserRepository<\/span> repo<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">UserService<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">UserRepository<\/span> repo<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>repo <span class=\"token operator\">&#061;<\/span> repo<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 comment\">\/\/ 2. 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punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 3. \u5b57\u6bb5\u6ce8\u5165&#xff08;\u4e0d\u63a8\u8350&#xff09;<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ProductService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">InventoryService<\/span> inventory<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>2. 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.loopLine{stroke-width:2px;stroke-dasharray:2,2;stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);}#mermaid-svg-SnusREzLVOPr6h4l .note{stroke:#aaaa33;fill:#fff5ad;}#mermaid-svg-SnusREzLVOPr6h4l .noteText,#mermaid-svg-SnusREzLVOPr6h4l .noteText&gt;tspan{fill:black;stroke:none;}#mermaid-svg-SnusREzLVOPr6h4l .activation0{fill:#f4f4f4;stroke:#666;}#mermaid-svg-SnusREzLVOPr6h4l .activation1{fill:#f4f4f4;stroke:#666;}#mermaid-svg-SnusREzLVOPr6h4l .activation2{fill:#f4f4f4;stroke:#666;}#mermaid-svg-SnusREzLVOPr6h4l .actorPopupMenu{position:absolute;}#mermaid-svg-SnusREzLVOPr6h4l .actorPopupMenuPanel{position:absolute;fill:#ECECFF;box-shadow:0px 8px 16px 0px rgba(0,0,0,0.2);filter:drop-shadow(3px 5px 2px rgb(0 0 0 \/ 0.4));}#mermaid-svg-SnusREzLVOPr6h4l .actor-man line{stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:#ECECFF;}#mermaid-svg-SnusREzLVOPr6h4l .actor-man circle,#mermaid-svg-SnusREzLVOPr6h4l line{stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:#ECECFF;stroke-width:2px;}#mermaid-svg-SnusREzLVOPr6h4l :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;} <\/p>\n<p>         BeanA <\/p>\n<p>         \u5bb9\u5668 <\/p>\n<p>         BeanB <\/p>\n<p>      \u521b\u5efaA&#xff0c;\u653e\u5165\u4e09\u7ea7\u7f13\u5b58 <\/p>\n<p>      \u9700\u8981B <\/p>\n<p>      \u521b\u5efaB <\/p>\n<p>      \u9700\u8981A&#xff08;\u4ece\u4e09\u7ea7\u7f13\u5b58\u83b7\u53d6\u65e9\u671fA&#xff09; <\/p>\n<p>      \u5b8c\u6210\u521b\u5efa&#xff0c;\u653e\u5165\u4e00\u7ea7\u7f13\u5b58 <\/p>\n<p>      \u5b8c\u6210\u521b\u5efa&#xff0c;\u653e\u5165\u4e00\u7ea7\u7f13\u5b58 <\/p>\n<p>        BeanA <\/p>\n<p>        \u5bb9\u5668 <\/p>\n<p>        BeanB <\/p>\n<\/li>\n<\/ul>\n<p>Q4&#xff1a;&#064;Autowired\u548c&#064;Resource\u7684\u533a\u522b&#xff1f;<\/p>\n<table>\n<tr>\u7279\u6027&#064;Autowired&#064;Resource<\/tr>\n<tbody>\n<tr>\n<td>\u6765\u6e90<\/td>\n<td>Spring\u6846\u67b6<\/td>\n<td>JSR-250\u6807\u51c6<\/td>\n<\/tr>\n<tr>\n<td>\u6ce8\u5165\u65b9\u5f0f<\/td>\n<td>\u6309\u7c7b\u578b&#xff08;\u53ef\u914d\u5408&#064;Qualifier&#xff09;<\/td>\n<td>\u6309\u540d\u79f0&#xff08;\u53ef\u6307\u5b9aname\u5c5e\u6027&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u652f\u6301\u53c2\u6570<\/td>\n<td>required<\/td>\n<td>name, type<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>Spring\u4e13\u5c5e\u9879\u76ee<\/td>\n<td>\u9700\u8981\u8de8\u6846\u67b6\u517c\u5bb9\u6027<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u4e8c\u3001\u9762\u5411\u5207\u9762\u7f16\u7a0b&#xff08;AOP&#xff09;<\/h4>\n<h5>1. \u6838\u5fc3\u6982\u5ff5\u89e3\u6790<\/h5>\n<p>  #mermaid-svg-02PQtOi0vcY5Liaf {font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}#mermaid-svg-02PQtOi0vcY5Liaf .error-icon{fill:#552222;}#mermaid-svg-02PQtOi0vcY5Liaf .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-02PQtOi0vcY5Liaf .edge-thickness-normal{stroke-width:2px;}#mermaid-svg-02PQtOi0vcY5Liaf .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-02PQtOi0vcY5Liaf .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-02PQtOi0vcY5Liaf .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-02PQtOi0vcY5Liaf .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-02PQtOi0vcY5Liaf .marker{fill:#333333;stroke:#333333;}#mermaid-svg-02PQtOi0vcY5Liaf .marker.cross{stroke:#333333;}#mermaid-svg-02PQtOi0vcY5Liaf svg{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-02PQtOi0vcY5Liaf g.classGroup text{fill:#9370DB;fill:#131300;stroke:none;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:10px;}#mermaid-svg-02PQtOi0vcY5Liaf g.classGroup text .title{font-weight:bolder;}#mermaid-svg-02PQtOi0vcY5Liaf .nodeLabel,#mermaid-svg-02PQtOi0vcY5Liaf .edgeLabel{color:#131300;}#mermaid-svg-02PQtOi0vcY5Liaf .edgeLabel .label rect{fill:#ECECFF;}#mermaid-svg-02PQtOi0vcY5Liaf .label text{fill:#131300;}#mermaid-svg-02PQtOi0vcY5Liaf .edgeLabel .label span{background:#ECECFF;}#mermaid-svg-02PQtOi0vcY5Liaf .classTitle{font-weight:bolder;}#mermaid-svg-02PQtOi0vcY5Liaf .node rect,#mermaid-svg-02PQtOi0vcY5Liaf .node circle,#mermaid-svg-02PQtOi0vcY5Liaf .node ellipse,#mermaid-svg-02PQtOi0vcY5Liaf .node polygon,#mermaid-svg-02PQtOi0vcY5Liaf .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-02PQtOi0vcY5Liaf .divider{stroke:#9370DB;stroke:1;}#mermaid-svg-02PQtOi0vcY5Liaf g.clickable{cursor:pointer;}#mermaid-svg-02PQtOi0vcY5Liaf g.classGroup rect{fill:#ECECFF;stroke:#9370DB;}#mermaid-svg-02PQtOi0vcY5Liaf g.classGroup line{stroke:#9370DB;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf .classLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.5;}#mermaid-svg-02PQtOi0vcY5Liaf .classLabel .label{fill:#9370DB;font-size:10px;}#mermaid-svg-02PQtOi0vcY5Liaf .relation{stroke:#333333;stroke-width:1;fill:none;}#mermaid-svg-02PQtOi0vcY5Liaf .dashed-line{stroke-dasharray:3;}#mermaid-svg-02PQtOi0vcY5Liaf #compositionStart,#mermaid-svg-02PQtOi0vcY5Liaf .composition{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf #compositionEnd,#mermaid-svg-02PQtOi0vcY5Liaf .composition{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf #dependencyStart,#mermaid-svg-02PQtOi0vcY5Liaf .dependency{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf #dependencyStart,#mermaid-svg-02PQtOi0vcY5Liaf .dependency{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf #extensionStart,#mermaid-svg-02PQtOi0vcY5Liaf .extension{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf #extensionEnd,#mermaid-svg-02PQtOi0vcY5Liaf .extension{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf #aggregationStart,#mermaid-svg-02PQtOi0vcY5Liaf .aggregation{fill:#ECECFF!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf #aggregationEnd,#mermaid-svg-02PQtOi0vcY5Liaf .aggregation{fill:#ECECFF!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-02PQtOi0vcY5Liaf .edgeTerminals{font-size:11px;}#mermaid-svg-02PQtOi0vcY5Liaf :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;} <\/p>\n<p>         <span class=\"edgeLabel\"><\/span> <\/p>\n<p>         <span class=\"nodeLabel\"><\/span> <\/p>\n<p>         <span class=\"nodeLabel\">Aspect<\/span> <\/p>\n<p>         <span class=\"nodeLabel\">&#043;Pointcut()<\/span> <\/p>\n<p>         <span class=\"nodeLabel\">&#043;Advice()<\/span> <\/p>\n<p>         <span class=\"nodeLabel\">\u00abinterface\u00bb<\/span> <\/p>\n<p>         <span class=\"nodeLabel\">Advice<\/span> <\/p>\n<p>         <span class=\"nodeLabel\">&#043;Before()<\/span> <\/p>\n<p>         <span class=\"nodeLabel\">&#043;After()<\/span> <\/p>\n<p>         <span class=\"nodeLabel\">&#043;Around()<\/span> <\/p>\n<ul>\n<li>\n<p>\u6838\u5fc3\u7ec4\u4ef6&#xff1a;<\/p>\n<ul>\n<li>\u5207\u9762&#xff08;Aspect&#xff09;&#xff1a;\u6a2a\u5207\u5173\u6ce8\u70b9\u7684\u6a21\u5757\u5316<\/li>\n<li>\u8fde\u63a5\u70b9&#xff08;Joinpoint&#xff09;&#xff1a;\u7a0b\u5e8f\u6267\u884c\u70b9&#xff08;\u65b9\u6cd5\u8c03\u7528\u3001\u5f02\u5e38\u629b\u51fa\u7b49&#xff09;<\/li>\n<li>\u5207\u70b9&#xff08;Pointcut&#xff09;&#xff1a;\u5339\u914d\u8fde\u63a5\u70b9\u7684\u8868\u8fbe\u5f0f<\/li>\n<li>\u901a\u77e5&#xff08;Advice&#xff09;&#xff1a;\u5728\u5207\u70b9\u6267\u884c\u7684\u52a8\u4f5c<\/li>\n<li>\u7ec7\u5165&#xff08;Weaving&#xff09;&#xff1a;\u5c06\u5207\u9762\u5e94\u7528\u5230\u76ee\u6807\u5bf9\u8c61\u7684\u8fc7\u7a0b<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u901a\u77e5\u7c7b\u578b&#xff1a;<\/p>\n<p> <span class=\"token annotation punctuation\">&#064;Aspect<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LoggingAspect<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u524d\u7f6e\u901a\u77e5<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Before<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;execution(* com.service.*.*(..))&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">logBefore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">JoinPoint<\/span> jp<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;Method: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> jp<span class=\"token punctuation\">.<\/span><span class=\"token function\">getSignature<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/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\">\/\/ \u73af\u7ed5\u901a\u77e5&#xff08;\u6700\u5f3a\u5927&#xff09;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Around<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#064;annotation(com.audit.Loggable)&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Object<\/span> <span class=\"token function\">logAround<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ProceedingJoinPoint<\/span> pjp<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Throwable<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">long<\/span> start <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Object<\/span> result <span class=\"token operator\">&#061;<\/span> pjp<span class=\"token punctuation\">.<\/span><span class=\"token function\">proceed<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">long<\/span> duration <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> start<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;Duration: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> duration <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;ms&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<h5>2. \u9ad8\u9891\u9762\u8bd5\u9898<\/h5>\n<p>Q1&#xff1a;Spring AOP\u548cAspectJ\u7684\u533a\u522b&#xff1f;<\/p>\n<table>\n<tr>\u7279\u6027Spring AOPAspectJ<\/tr>\n<tbody>\n<tr>\n<td>\u7ec7\u5165\u65b9\u5f0f<\/td>\n<td>\u8fd0\u884c\u65f6\u4ee3\u7406<\/td>\n<td>\u7f16\u8bd1\u65f6\/\u52a0\u8f7d\u65f6\u7ec7\u5165<\/td>\n<\/tr>\n<tr>\n<td>\u6027\u80fd<\/td>\n<td>\u6709\u8fd0\u884c\u65f6\u5f00\u9500<\/td>\n<td>\u65e0\u8fd0\u884c\u65f6\u5f00\u9500<\/td>\n<\/tr>\n<tr>\n<td>\u8fde\u63a5\u70b9\u652f\u6301<\/td>\n<td>\u4ec5\u65b9\u6cd5\u7ea7\u522b<\/td>\n<td>\u65b9\u6cd5\u3001\u6784\u9020\u5668\u3001\u5b57\u6bb5\u7b49<\/td>\n<\/tr>\n<tr>\n<td>\u4f9d\u8d56<\/td>\n<td>\u8f7b\u91cf\u7ea7&#xff0c;\u5185\u7f6e\u4e8eSpring<\/td>\n<td>\u9700\u8981\u989d\u5916\u7f16\u8bd1\u5668\/\u7c7b\u52a0\u8f7d\u5668<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u666e\u901a\u5e94\u7528<\/td>\n<td>\u9ad8\u6027\u80fd\u3001\u590d\u6742\u5207\u9762\u9700\u6c42<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Q2&#xff1a;JDK\u52a8\u6001\u4ee3\u7406\u548cCGLIB\u5982\u4f55\u9009\u62e9&#xff1f;<\/p>\n<ul>\n<li>JDK\u52a8\u6001\u4ee3\u7406&#xff1a;\n<ul>\n<li>\u8981\u6c42\u76ee\u6807\u7c7b\u5b9e\u73b0\u63a5\u53e3<\/li>\n<li>\u57fa\u4e8e\u53cd\u5c04&#xff0c;\u751f\u6210\u63a5\u53e3\u4ee3\u7406\u7c7b<\/li>\n<li>\u793a\u4f8b&#xff1a;Proxy.newProxyInstance()<\/li>\n<\/ul>\n<\/li>\n<li>CGLIB\u4ee3\u7406&#xff1a;\n<ul>\n<li>\u901a\u8fc7\u7ee7\u627f\u76ee\u6807\u7c7b\u751f\u6210\u5b50\u7c7b<\/li>\n<li>\u4e0d\u9700\u8981\u63a5\u53e3<\/li>\n<li>\u65e0\u6cd5\u4ee3\u7406final\u7c7b\/\u65b9\u6cd5<\/li>\n<\/ul>\n<\/li>\n<li>Spring\u9009\u62e9\u7b56\u7565&#xff1a;\n<p> 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ms\\&#8221;,verdana,arial,sans-serif;color:#333;}#mermaid-svg-Q9XA26hVhIYAI8f1 .cluster-label text{fill:#333;}#mermaid-svg-Q9XA26hVhIYAI8f1 .cluster-label span{color:#333;}#mermaid-svg-Q9XA26hVhIYAI8f1 .label text,#mermaid-svg-Q9XA26hVhIYAI8f1 span{fill:#333;color:#333;}#mermaid-svg-Q9XA26hVhIYAI8f1 .node rect,#mermaid-svg-Q9XA26hVhIYAI8f1 .node circle,#mermaid-svg-Q9XA26hVhIYAI8f1 .node ellipse,#mermaid-svg-Q9XA26hVhIYAI8f1 .node polygon,#mermaid-svg-Q9XA26hVhIYAI8f1 .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-Q9XA26hVhIYAI8f1 .node .label{text-align:center;}#mermaid-svg-Q9XA26hVhIYAI8f1 .node.clickable{cursor:pointer;}#mermaid-svg-Q9XA26hVhIYAI8f1 .arrowheadPath{fill:#333333;}#mermaid-svg-Q9XA26hVhIYAI8f1 .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-Q9XA26hVhIYAI8f1 .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-Q9XA26hVhIYAI8f1 .edgeLabel{background-color:#e8e8e8;text-align:center;}#mermaid-svg-Q9XA26hVhIYAI8f1 .edgeLabel rect{opacity:0.5;background-color:#e8e8e8;fill:#e8e8e8;}#mermaid-svg-Q9XA26hVhIYAI8f1 .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-Q9XA26hVhIYAI8f1 .cluster text{fill:#333;}#mermaid-svg-Q9XA26hVhIYAI8f1 .cluster span{color:#333;}#mermaid-svg-Q9XA26hVhIYAI8f1 div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-Q9XA26hVhIYAI8f1 :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;} <\/p>\n<p>           <span id=\"L-L-A-B\" class=\"edgeLabel L-LS-A&#039; L-LE-B\">Yes<\/span> <\/p>\n<p>           <span id=\"L-L-A-C\" class=\"edgeLabel L-LS-A&#039; L-LE-C\">No<\/span> <\/p>\n<p>           <span id=\"L-L-D-E\" class=\"edgeLabel L-LS-D&#039; L-LE-E\"><\/span> <\/p>\n<p>             \u76ee\u6807\u7c7b\u6709\u63a5\u53e3? <\/p>\n<p>             JDK\u52a8\u6001\u4ee3\u7406 <\/p>\n<p>             CGLIB\u4ee3\u7406 <\/p>\n<p>             \u5f3a\u5236CGLIB <\/p>\n<p>             \u914d\u7f6eproxyTargetClass&#061;true <\/p>\n<\/li>\n<\/ul>\n<p>Q3&#xff1a;\u5982\u4f55\u5b9e\u73b0\u81ea\u5b9a\u4e49\u6ce8\u89e3\u7684\u5207\u9762&#xff1f;<\/p>\n<p><span class=\"token annotation punctuation\">&#064;Target<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ElementType<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">METHOD<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Retention<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">RetentionPolicy<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">RUNTIME<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token annotation punctuation\">&#064;interface<\/span> <span class=\"token class-name\">AuditLog<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">String<\/span> <span class=\"token function\">action<\/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 annotation punctuation\">&#064;Aspect<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Component<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AuditAspect<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;AfterReturning<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        value <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#064;annotation(auditLog)&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        returning <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;result&#034;<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">audit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">AuditLog<\/span> auditLog<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Object<\/span> result<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> action <span class=\"token operator\">&#061;<\/span> auditLog<span class=\"token punctuation\">.<\/span><span class=\"token function\">action<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u4fdd\u5b58\u5ba1\u8ba1\u65e5\u5fd7\u5230DB<\/span><br \/>\n        auditRepository<span class=\"token punctuation\">.<\/span><span class=\"token function\">save<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">AuditRecord<\/span><span class=\"token punctuation\">(<\/span>action<span class=\"token punctuation\">,<\/span> result<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><span class=\"token comment\">\/\/ \u4f7f\u7528\u793a\u4f8b<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Service<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">OrderService<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;AuditLog<\/span><span class=\"token punctuation\">(<\/span>action <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;PLACE_ORDER&#034;<\/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\">createOrder<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">OrderRequest<\/span> request<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u4e1a\u52a1\u903b\u8f91<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u4e09\u3001\u7efc\u5408\u5b9e\u6218\u4e0e\u8bbe\u8ba1\u6a21\u5f0f<\/h4>\n<h5>1. \u5178\u578b\u5e94\u7528\u573a\u666f<\/h5>\n<ul>\n<li>\n<p>\u4e8b\u52a1\u7ba1\u7406&#xff08;&#064;Transactional\u5b9e\u73b0\u539f\u7406&#xff09;&#xff1a;<\/p>\n<p> <span class=\"token annotation punctuation\">&#064;Transactional<\/span><span class=\"token punctuation\">(<\/span>propagation <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Propagation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">REQUIRED<\/span><span class=\"token punctuation\">,<\/span><br \/>\n               isolation <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Isolation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DEFAULT<\/span><span class=\"token punctuation\">,<\/span><br \/>\n               timeout <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">transfer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Account<\/span> from<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Account<\/span> <span class=\"token keyword\">to<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">BigDecimal<\/span> amount<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4f7f\u7528AOP\u4ee3\u7406\u5b9e\u73b0&#xff1a;<\/span><br \/>\n    <span class=\"token comment\">\/\/ 1. \u83b7\u53d6\u8fde\u63a5<\/span><br \/>\n    <span class=\"token comment\">\/\/ 2. \u8bbe\u7f6e\u9694\u79bb\u7ea7\u522b<\/span><br \/>\n    <span class=\"token comment\">\/\/ 3. try{\u4e1a\u52a1\u903b\u8f91} catch{\u56de\u6eda} finally{\u5173\u95ed\u8fde\u63a5}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u5b89\u5168\u5ba1\u8ba1&#xff1a;<\/p>\n<p> <span class=\"token annotation punctuation\">&#064;Before<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;within(&#064;org.springframework.stereotype.Controller *)&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">logControllerAccess<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">JoinPoint<\/span> jp<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">String<\/span> user <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">SecurityContextHolder<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getContext<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getAuthentication<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    logger<span class=\"token punctuation\">.<\/span><span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;User: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> user <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; accessed: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> jp<span class=\"token punctuation\">.<\/span><span class=\"token function\">getSignature<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<h5>2. \u9ad8\u9891\u9762\u8bd5\u9898<\/h5>\n<p>Q1&#xff1a;\u5982\u4f55\u9009\u62e9\u4ee3\u7406\u65b9\u5f0f&#xff1f;<\/p>\n<ul>\n<li>\u8003\u8651\u56e0\u7d20&#xff1a;\n<li>\u76ee\u6807\u7c7b\u662f\u5426\u5b9e\u73b0\u63a5\u53e3 \u2192 \u662f&#xff1a;JDK\u4ee3\u7406&#xff1b;\u5426&#xff1a;CGLIB<\/li>\n<li>\u662f\u5426\u9700\u8981\u4ee3\u7406\u975epublic\u65b9\u6cd5 \u2192 \u662f&#xff1a;CGLIB<\/li>\n<li>\u6027\u80fd\u8981\u6c42 \u2192 \u9ad8&#xff1a;AspectJ\u7f16\u8bd1\u65f6\u7ec7\u5165<\/li>\n<li>\u5e94\u7528\u573a\u666f \u2192 Spring Boot\u9ed8\u8ba4CGLIB<\/li>\n<\/li>\n<\/ul>\n<p>Q2&#xff1a;AOP\u4e2d\u7684\u8bbe\u8ba1\u6a21\u5f0f&#xff1f;<\/p>\n<li>\n<p>\u4ee3\u7406\u6a21\u5f0f&#xff1a;<\/p>\n<ul>\n<li>JDK\u52a8\u6001\u4ee3\u7406&#xff1a;java.lang.reflect.Proxy<\/li>\n<li>CGLIB&#xff1a;net.sf.cglib.proxy.Enhancer<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8d23\u4efb\u94fe\u6a21\u5f0f&#xff1a;<\/p>\n<p> <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">MethodInterceptor<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">Object<\/span> <span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">MethodInvocation<\/span> invocation<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Throwable<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u62e6\u622a\u5668\u94fe\u6267\u884c<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ReflectiveMethodInvocation<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">MethodInvocation<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">MethodInterceptor<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> interceptors<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">int<\/span> currentInterceptorIndex <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Object<\/span> <span class=\"token function\">proceed<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>currentInterceptorIndex <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>interceptors<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token function\">invokeJoinpoint<\/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 class-name\">MethodInterceptor<\/span> interceptor <span class=\"token operator\">&#061;<\/span><br \/>\n            interceptors<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&#043;&#043;<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>currentInterceptorIndex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> interceptor<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/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>\n <\/li>\n<p>Q3&#xff1a;\u5982\u4f55\u8c03\u8bd5AOP\u4e0d\u751f\u6548\u95ee\u9898&#xff1f;<\/p>\n<li>\n<p>\u68c0\u67e5\u5207\u70b9\u8868\u8fbe\u5f0f&#xff1a;<\/p>\n<p> <span class=\"token comment\">\/\/ \u6253\u5370\u6240\u6709\u88ab\u4ee3\u7406\u7684Bean<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Bean<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token class-name\">CommandLineRunner<\/span> <span class=\"token function\">aopDebug<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ApplicationContext<\/span> ctx<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> args <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> beans <span class=\"token operator\">&#061;<\/span> ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBeanDefinitionNames<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Arrays<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">stream<\/span><span class=\"token punctuation\">(<\/span>beans<span class=\"token punctuation\">)<\/span><br \/>\n              <span class=\"token punctuation\">.<\/span><span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span>name <span class=\"token operator\">-&gt;<\/span> ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">contains<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;$$&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n              <span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token operator\">::<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u786e\u8ba4\u4ee3\u7406\u65b9\u5f0f&#xff1a;<\/p>\n<p> <span class=\"token comment\">\/\/ \u68c0\u67e5Bean\u662f\u5426\u88ab\u4ee3\u7406<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">AopUtils<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">isAopProxy<\/span><span class=\"token punctuation\">(<\/span>bean<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>bean <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034; is proxied&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<h4>\u56db\u3001\u6700\u4f73\u5b9e\u8df5\u4e0e\u907f\u5751\u6307\u5357<\/h4>\n<li>\n<p>DI\u6700\u4f73\u5b9e\u8df5&#xff1a;<\/p>\n<ul>\n<li>\u4f18\u5148\u4f7f\u7528\u6784\u9020\u5668\u6ce8\u5165<\/li>\n<li>\u907f\u514d\u5b57\u6bb5\u6ce8\u5165&#xff08;\u4e0d\u5229\u4e8e\u6d4b\u8bd5\u548c\u4e0d\u53d8\u6027&#xff09;<\/li>\n<li>\u4f7f\u7528&#064;Qualifier\u89e3\u51b3\u6b67\u4e49\u4f9d\u8d56<\/li>\n<li>\u5bf9\u53ef\u9009\u4f9d\u8d56\u4f7f\u7528&#064;Autowired(required&#061;false)<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>AOP\u907f\u5751\u6307\u5357&#xff1a;<\/p>\n<ul>\n<li>\u907f\u514d\u5728\u5207\u9762\u4e2d\u5904\u7406\u4e1a\u52a1\u903b\u8f91<\/li>\n<li>\u8c28\u614e\u4f7f\u7528&#064;Around&#xff08;\u5fc5\u987b\u8c03\u7528proceed()&#xff09;<\/li>\n<li>\u6ce8\u610f\u5207\u70b9\u8868\u8fbe\u5f0f\u7684\u6027\u80fd\u5f71\u54cd<\/li>\n<li>\u907f\u514d\u81ea\u8c03\u7528&#xff08;this.method()&#xff09;\u5bfc\u81f4\u7684AOP\u5931\u6548<\/li>\n<\/ul>\n<p> <span class=\"token comment\">\/\/ 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class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/* &#8230; *\/<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u89e3\u51b3\u65b9\u6848&#xff1a;\u901a\u8fc7\u4ee3\u7406\u8c03\u7528<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Autowired<\/span><br \/>\n<span class=\"token keyword\">private<\/span> <span class=\"token class-name\">ApplicationContext<\/span> context<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">process<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    context<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBean<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">validate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<li>\n<p>\u6027\u80fd\u4f18\u5316&#xff1a;<\/p>\n<p> <span class=\"token comment\">\/\/ \u4f18\u5316\u5207\u70b9\u8868\u8fbe\u5f0f<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Pointcut<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;within(com.service..*) &amp;&amp; execution(public * *(..))&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">servicePublicMethods<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4f7f\u7528\u6761\u4ef6\u7f16\u8bd1&#xff08;AspectJ&#xff09;<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;Aspect<\/span><br \/>\n<span class=\"token annotation punctuation\">&#064;ConditionalOnExpression<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;${aop.enabled:true}&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PerformanceAspect<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/* &#8230; *\/<\/span> 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punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> key<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Object<\/span> value<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">getContextMap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token 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punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">boolean<\/span> <span class=\"token function\">matches<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Method<\/span> method<span class=\"token punctuation\">,<\/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> targetClass<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> method<span class=\"token punctuation\">.<\/span><span class=\"token function\">isAnnotationPresent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">CustomAnnotation<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/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>\n <\/li>\n<li>\n<p>\u521b\u5efa\u81ea\u5b9a\u4e49Advisor&#xff1a;<\/p>\n<p> <span class=\"token annotation punctuation\">&#064;Bean<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Advisor<\/span> <span class=\"token function\">customAdvisor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">CustomPointcut<\/span> pointcut <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CustomPointcut<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n 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\/>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb820\u6b21\uff0c\u70b9\u8d5e13\u6b21\uff0c\u6536\u85cf19\u6b21\u3002Java \u4f9d\u8d56\u6ce8\u5165\u3001\u63a7\u5236\u53cd\u8f6c\u4e0e\u9762\u5411\u5207\u9762\uff1a\u9762\u8bd5\u6df1\u5ea6\u89e3\u6790<\/p>\n","protected":false},"author":2,"featured_media":42088,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1874,99,3603,3893,190,3894,3895,176],"topic":[],"class_list":{"0":"post-42089","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-server","8":"tag-java","11":"tag-3893","12":"tag-190","13":"tag-3894","14":"tag-3895","15":"tag-176"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java 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