{"id":96593,"date":"2026-08-27T23:49:07","date_gmt":"2026-08-27T15:49:07","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/96593.html"},"modified":"2026-08-27T23:49:07","modified_gmt":"2026-08-27T15:49:07","slug":"java-%e5%ba%8f%e5%88%97%e5%8c%96%e8%bf%9b%e9%98%b6%e5%ae%9e%e6%88%98%ef%bc%9a%e5%be%aa%e7%8e%af%e5%bc%95%e7%94%a8%e3%80%81%e5%8f%8d%e5%ba%8f%e5%88%97%e5%8c%96%e6%bc%8f%e6%b4%9e%e4%b8%8e%e7%94%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/96593.html","title":{"rendered":"Java \u5e8f\u5217\u5316\u8fdb\u9636\u5b9e\u6218\uff1a\u5faa\u73af\u5f15\u7528\u3001\u53cd\u5e8f\u5217\u5316\u6f0f\u6d1e\u4e0e\u751f\u4ea7\u907f\u5751\u6307\u5357"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260827154902-6a905c6e256cc.png\" \/><\/p>\n<p>\u6587\u7ae0\u6536\u5f55\u4e13\u680f&#xff1a;Java \u6838\u5fc3\u539f\u7406\u5168\u89e3&#xff1a;\u6e90\u7801\u30fb\u5e76\u53d1\u30fb\u9762\u8bd5\u5b9e\u6218<\/p>\n<h3>\u524d\u8a00<\/h3>\n<p>\u672c\u6587\u4e3a Java \u5e8f\u5217\u5316\u7cfb\u5217 \u00b7 \u4e0b\u7bc7&#xff08;\u8fdb\u9636\u751f\u4ea7\u7bc7&#xff09; \u627f\u63a5\u4e0a\u7bc7\u57fa\u7840\u5185\u5bb9&#xff0c;\u4e13\u6ce8\u5e95\u5c42\u539f\u7406\u3001\u5bf9\u8c61\u7f13\u5b58\u673a\u5236\u3001\u7248\u672c\u517c\u5bb9\u9ad8\u9636API\u3001\u5e8f\u5217\u5316\u4ee3\u7406\u6a21\u5f0f\u3001\u53cd\u5e8f\u5217\u5316\u5b89\u5168\u6f0f\u6d1e\u3001JDK\u7248\u672c\u53d8\u5316\u3001\u6570\u636e\u5e93\u5b58\u50a8\u5b9e\u6218\u3001\u7ebf\u4e0a\u8e29\u5751\u590d\u76d8\u3001\u4f01\u4e1a\u9009\u578b\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<p>\u9002\u5408\u5df2\u7ecf\u638c\u63e1Serializable\u57fa\u7840&#xff0c;\u60f3\u8981\u6df1\u6316\u5e95\u5c42\u3001\u89c4\u907f\u7ebf\u4e0aBUG\u3001\u5e94\u5bf9\u9ad8\u9636\u9762\u8bd5\u7684\u5f00\u53d1\u8005\u3002<\/p>\n<p>&#x1f449; \u57fa\u7840\u6982\u5ff5\u3001transient\u3001serialVersionUID\u3001\u7ee7\u627f\u89c4\u5219\u8bf7\u9605\u8bfb\u4e0a\u7bc7&#xff1a; \u3010\u9762\u8bd5\u5fc5\u80cc\u3011Java\u5e8f\u5217\u5316&#xff1a;Serializable\u3001transient\u3001serialVersionUID\u5b8c\u6574\u68b3\u7406<\/p>\n<hr \/>\n<h3>\u4e00\u3001\u5e95\u5c42\u6838\u5fc3&#xff1a;\u5bf9\u8c61\u5f15\u7528\u7f13\u5b58\u4e0e\u5faa\u73af\u5f15\u7528<\/h3>\n<h4>1.1 \u7f13\u5b58\u5b9e\u73b0\u539f\u7406<\/h4>\n<p>ObjectOutputStream \u5185\u90e8\u6301\u6709\u4e00\u4e2a\u5bf9\u8c61\u2011\u8f93\u51fa\u53e5\u67c4\u6620\u5c04\u8868\u3002 \u6bcf\u5e8f\u5217\u5316\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u5c31\u628a\u5bf9\u8c61\u5b58\u5165\u7f13\u5b58&#xff0c;\u540e\u7eed\u6d41\u4e2d\u9047\u5230\u540c\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u4e0d\u4f1a\u91cd\u590d\u5e8f\u5217\u5316\u5bf9\u8c61\u6570\u636e&#xff0c;\u53ea\u4f1a\u8f93\u51fa\u4e00\u4e2a\u5f15\u7528\u7f16\u53f7\u3002<\/p>\n<p>\u5e26\u6765\u4e24\u4e2a\u7279\u6027&#xff1a;<\/p>\n<li>\u5929\u7136\u652f\u6301\u5bf9\u8c61\u5faa\u73af\u5f15\u7528&#xff0c;\u4e0d\u4f1a\u65e0\u9650\u9012\u5f52\u6808\u6ea2\u51fa<\/li>\n<li>\u540c\u4e00\u6d41\u591a\u6b21\u5199\u51fa\u540c\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u8bfb\u53d6\u5f97\u5230\u7684\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u5f15\u7528<\/li>\n<h4>1.2 \u9ad8\u9891\u751f\u4ea7BUG&#xff1a;\u4fee\u6539\u5bf9\u8c61\u540e\u518d\u6b21\u5e8f\u5217\u5316\u4e0d\u751f\u6548<\/h4>\n<p>User user &#061; new User(&#034;\u5f20\u4e09&#034;,18);<br \/>\noos.writeObject(user);<br \/>\n\/\/ \u4fee\u6539\u5bf9\u8c61\u5c5e\u6027<br \/>\nuser.setName(&#034;\u674e\u56db&#034;);<br \/>\noos.writeObject(user);<\/p>\n<p>\u53cd\u5e8f\u5217\u5316\u51fa\u6765&#xff0c;\u7b2c\u4e8c\u4e2a\u5bf9\u8c61\u540d\u5b57\u4f9d\u65e7\u662f\u5f20\u4e09\u3002<\/p>\n<p>\u539f\u56e0&#xff1a;\u6d41\u7f13\u5b58\u5df2\u7ecf\u8bb0\u5f55\u8be5\u5bf9\u8c61&#xff0c;\u76f4\u63a5\u8f93\u51fa\u5f15\u7528&#xff0c;\u4e0d\u4f1a\u91cd\u65b0\u626b\u63cf\u5bf9\u8c61\u6700\u65b0\u72b6\u6001\u3002<\/p>\n<h4>1.3 \u4e24\u79cd\u89e3\u51b3\u65b9\u6848<\/h4>\n<li>oos.reset()&#xff1a;\u6e05\u7a7a\u6574\u4e2a\u6d41\u7684\u5168\u90e8\u5bf9\u8c61\u7f13\u5b58&#xff0c;\u9002\u5408\u7b80\u5355\u573a\u666f&#xff1b;\u7f3a\u70b9\u4f1a\u91cd\u7f6e\u5168\u90e8\u5386\u53f2\u5bf9\u8c61\u8bb0\u5f55\u3002<\/li>\n<li>oos.writeUnshared(user)&#xff1a;\u672c\u6b21\u4e0d\u4f7f\u7528\u7f13\u5b58&#xff0c;\u5f3a\u5236\u628a\u5f53\u524d\u5bf9\u8c61\u5b8c\u6574\u5e8f\u5217\u5316\u4e00\u904d&#xff1b;\u4e0d\u4f1a\u6539\u52a8\u5386\u53f2\u7f13\u5b58\u3002<\/li>\n<p>\u9762\u8bd5\u8003\u70b9&#xff1a;\u533a\u5206 writeObject \u548c writeUnshared \u7684\u533a\u522b\u3002<\/p>\n<h3>\u4e8c\u3001\u9ad8\u9636\u7248\u672c\u517c\u5bb9API<\/h3>\n<h4>2.1 readObjectNoData()<\/h4>\n<p>\u5f53\u53cd\u5e8f\u5217\u5316\u65f6&#xff0c;\u6d41\u91cc\u9762\u5b8c\u5168\u6ca1\u6709\u5f53\u524d\u5b50\u7c7b\u7684\u4efb\u4f55\u5b57\u6bb5\u6570\u636e\u65f6&#xff0c;\u624d\u4f1a\u56de\u8c03\u8fd9\u4e2a\u65b9\u6cd5\u3002 \u5178\u578b\u573a\u666f&#xff1a;\u7236\u7c7b\u5b50\u7c7b\u7ee7\u627f\u5173\u7cfb\u53d1\u751f\u6539\u52a8&#xff0c;\u65e7\u7248\u672c\u5b57\u8282\u6d41\u7f3a\u5c11\u5b50\u7c7b\u4fe1\u606f\u3002<\/p>\n<p>\u6ce8\u610f&#xff1a;\u4ec5\u4ec5\u65b0\u589e\u51e0\u4e2a\u5b57\u6bb5&#xff0c;\u4e0d\u4f1a\u89e6\u53d1 readObjectNoData&#xff0c;\u5f88\u591a\u9762\u8bd5\u9898\u5728\u8fd9\u91cc\u6316\u5751\u3002 \u5728\u65b9\u6cd5\u5185\u53ef\u4ee5\u7ed9\u5b57\u6bb5\u8bbe\u7f6e\u4e1a\u52a1\u9ed8\u8ba4\u503c&#xff0c;\u907f\u514d\u5b57\u6bb5\u4e3anull\u3002<\/p>\n<h4>2.2 ObjectInputFilter \u8f93\u5165\u8fc7\u6ee4<\/h4>\n<p>JDK9 \u6b63\u5f0f\u5f15\u5165&#xff0c;JDK8u121\u4e4b\u540e\u56de\u79fb\u690d\u5230JDK8\u3002 \u7528\u6765\u505a\u53cd\u5e8f\u5217\u5316\u9ed1\u767d\u540d\u5355&#xff0c;\u9650\u5236\u5141\u8bb8\u53cd\u5e8f\u5217\u5316\u7684\u7c7b&#xff0c;\u62e6\u622a\u6076\u610f Gadget \u7c7b&#xff0c;\u662fJDK\u5b98\u65b9\u63d0\u4f9b\u7684\u9632\u5fa1\u624b\u6bb5\u3002<\/p>\n<h3>\u4e09\u3001readResolve \/ writeReplace \u6df1\u5ea6\u5256\u6790&#xff08;\u9762\u8bd5\u9ad8\u9891&#xff09;<\/h3>\n<p>\u4e0a\u7bc7\u7b80\u5355\u4ecb\u7ecd&#xff0c;\u8fd9\u91cc\u8865\u5145\u751f\u4ea7\u5751\u3002<\/p>\n<ul>\n<li>writeReplace&#xff1a;\u5e8f\u5217\u5316\u53d1\u751f\u4e4b\u524d&#xff0c;\u66ff\u6362\u8981\u5199\u5165\u6d41\u7684\u5bf9\u8c61\u3002<\/li>\n<li>readResolve&#xff1a;\u53cd\u5e8f\u5217\u5316\u5b8c\u6210&#xff0c;\u5bf9\u8c61\u6784\u9020\u51fa\u6765\u4e4b\u540e&#xff0c;\u66ff\u6362\u6700\u7ec8\u8fd4\u56de\u7ed9\u7a0b\u5e8f\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<h4>3.1 \u5355\u4f8b\u5e8f\u5217\u5316\u6f0f\u6d1e<\/h4>\n<p>\u4ec5\u4ec5\u5355\u4f8b\u79c1\u6709\u6784\u9020&#xff0c;\u6ca1\u6709 readResolve&#xff0c;\u53cd\u5e8f\u5217\u5316\u4f1a\u4ea7\u751f\u5168\u65b0\u5bf9\u8c61&#xff0c;\u7834\u574f\u5355\u4f8b\u3002<\/p>\n<p>private Object readResolve() {<br \/>\n    return INSTANCE;<br \/>\n}<\/p>\n<p>\u5751\u70b9&#xff1a;readResolve \u53ea\u6539\u53d8\u8fd4\u56de\u5bf9\u8c61&#xff0c;\u6d41\u91cc\u9762\u4f9d\u65e7\u4fdd\u5b58\u7740\u65e7\u5b9e\u4f8b\u7684\u5b8c\u6574\u5b57\u8282\u6570\u636e&#xff0c;\u4e0d\u4f1a\u6539\u53d8\u6d41\u5185\u5bb9\u3002<\/p>\n<h4>3.2 \u548c\u5e8f\u5217\u5316\u4ee3\u7406\u6a21\u5f0f\u7684\u533a\u522b<\/h4>\n<p>readResolve \u53ea\u662f\u66ff\u6362\u8fd4\u56de\u5bf9\u8c61&#xff1b;\u5e8f\u5217\u5316\u4ee3\u7406\u6a21\u5f0f\u4f1a\u628a\u4ee3\u7406\u5bf9\u8c61\u771f\u6b63\u5199\u5165\u5b57\u8282\u6d41&#xff0c;\u5b89\u5168\u6027\u66f4\u9ad8\u3002<\/p>\n<h3>\u56db\u3001Externalizable \u751f\u4ea7\u5751\u70b9\u56de\u987e<\/h3>\n<p>Externalizable \u5b8c\u5168\u81ea\u5df1\u5b9e\u73b0\u8bfb\u5199\u903b\u8f91\u3002<\/p>\n<li>\u5fc5\u987b\u6709\u65e0\u53c2\u6784\u9020\u5668&#xff0c;\u53cd\u5e8f\u5217\u5316\u4f1a\u53cd\u5c04\u8c03\u7528\u65e0\u53c2\u6784\u9020&#xff1b;\u6ca1\u6709\u76f4\u63a5\u629b\u5f02\u5e38\u3002<\/li>\n<li>transient \u4fee\u9970\u7684\u5b57\u6bb5\u4f9d\u7136\u9700\u8981\u624b\u52a8\u8bfb\u5199&#xff0c;transient\u5173\u952e\u5b57\u5931\u6548\u3002<\/li>\n<li>serialVersionUID\u4f9d\u7136\u751f\u6548\u3002<\/li>\n<li>\u4e1a\u52a1\u4e2d\u6781\u5c11\u4f7f\u7528&#xff0c;\u5927\u90e8\u5206\u573a\u666f\u7528Serializable\u5373\u53ef\u3002<\/li>\n<h3>\u4e94\u3001\u5e8f\u5217\u5316\u4ee3\u7406\u6a21\u5f0f&#xff08;Effective Java\u63a8\u8350\u6700\u5b89\u5168\u65b9\u6848&#xff09;<\/h3>\n<p>\u666e\u901a readResolve \u5b58\u5728\u653b\u51fb\u7ed5\u8fc7\u98ce\u9669&#xff0c;Effective Java \u91cd\u70b9\u63a8\u8350\u5e8f\u5217\u5316\u4ee3\u7406\u6a21\u5f0f\u3002<\/p>\n<p>\u6838\u5fc3\u601d\u8def&#xff1a;<\/p>\n<li>\u4e3a\u4e1a\u52a1\u5b9e\u4f53\u7f16\u5199\u4e00\u4e2a\u79c1\u6709\u9759\u6001\u4ee3\u7406\u7c7b&#xff0c;\u4ee3\u7406\u7c7b\u4fdd\u5b58\u4e1a\u52a1\u5bf9\u8c61\u5168\u90e8\u6838\u5fc3\u5b57\u6bb5\u3002<\/li>\n<li>\u539f\u7c7b\u5b9e\u73b0 writeReplace&#xff0c;\u8fd4\u56de\u4ee3\u7406\u5b9e\u4f8b\u5199\u5165\u6d41\u3002<\/li>\n<li>\u4ee3\u7406\u7c7b\u5b9e\u73b0 readResolve&#xff0c;\u91cd\u65b0\u6784\u5efa\u539f\u59cb\u4e1a\u52a1\u5bf9\u8c61\u8fd4\u56de\u3002<\/li>\n<p>\/\/ \u4e1a\u52a1\u5b9e\u4f53<br \/>\npublic class User implements Serializable {<br \/>\n    private String name;<br \/>\n    private Integer age;<\/p>\n<p>    public User(String name, Integer age) {<br \/>\n        this.name &#061; name;<br \/>\n        this.age &#061; age;<br \/>\n    }<\/p>\n<p>    \/\/ \u5e8f\u5217\u5316\u4ee3\u7406&#xff0c;\u5199\u5165\u6d41\u7684\u5b9e\u9645\u662f\u8fd9\u4e2a\u4ee3\u7406\u5bf9\u8c61<br \/>\n    private static class SerializationProxy implements Serializable {<br \/>\n        private final String name;<br \/>\n        private final Integer age;<br \/>\n        public SerializationProxy(User user) {<br \/>\n            this.name &#061; user.name;<br \/>\n            this.age &#061; user.age;<br \/>\n        }<br \/>\n        \/\/ \u53cd\u5e8f\u5217\u5316\u4ee3\u7406&#xff0c;\u91cd\u5efa\u539f\u59cb\u5bf9\u8c61<br \/>\n        private Object readResolve() {<br \/>\n            return new User(name, age);<br \/>\n        }<br \/>\n    }<\/p>\n<p>    \/\/ \u5e8f\u5217\u5316\u65f6\u66ff\u6362\u4e3a\u4ee3\u7406<br \/>\n    private Object writeReplace() {<br \/>\n        return new SerializationProxy(this);<br \/>\n    }<br \/>\n    \/\/ \u7981\u6b62\u76f4\u63a5\u53cd\u5e8f\u5217\u5316\u672c\u7c7b&#xff0c;\u9632\u6b62\u653b\u51fb\u8005\u6784\u9020\u6076\u610f\u5b57\u8282<br \/>\n    private void readObject(ObjectInputStream in) throws InvalidObjectException {<br \/>\n        throw new InvalidObjectException(&#034;\u8bf7\u4f7f\u7528\u5e8f\u5217\u5316\u4ee3\u7406&#034;);<br \/>\n    }<br \/>\n}<\/p>\n<p>\u4f18\u52bf&#xff1a;<\/p>\n<ul>\n<li>\u653b\u51fb\u8005\u65e0\u6cd5\u6784\u9020\u6076\u610f\u5b50\u7c7b\u8fdb\u884c\u653b\u51fb&#xff1b;<\/li>\n<li>\u53cd\u5e8f\u5217\u5316\u5f3a\u5236\u8c03\u7528\u4e1a\u52a1\u6784\u9020\u5668&#xff0c;\u53ef\u4ee5\u505a\u53c2\u6570\u6821\u9a8c&#xff1b;<\/li>\n<li>\u53ef\u4ee5\u65e0\u89c6\u539f\u5bf9\u8c61\u6240\u6709\u5b57\u6bb5\u8bbf\u95ee\u6743\u9650\u3002<\/li>\n<\/ul>\n<p>\u7f3a\u70b9&#xff1a;\u4f1a\u989d\u5916\u591a\u4e00\u5c42\u5bf9\u8c61&#xff0c;\u5bf9\u8d85\u5927\u5bf9\u8c61\u4f1a\u5e26\u6765\u5c11\u91cf\u6027\u80fd\u5f00\u9500\u3002<\/p>\n<h3>\u516d\u3001\u5bb9\u5668\u7c7b\u81ea\u5b9a\u4e49\u5e8f\u5217\u5316\u539f\u7406&#xff1a;ArrayList \/ HashMap<\/h3>\n<p>JDK\u96c6\u5408\u7c7b\u5e76\u6ca1\u6709\u7b80\u5355\u628a\u5168\u90e8\u6210\u5458\u53d8\u91cf\u5e8f\u5217\u5316\u3002 \u4ee5ArrayList\u4e3e\u4f8b&#xff1a;<\/p>\n<ul>\n<li>\u5e95\u5c42elementData\u6570\u7ec4\u4f1a\u9884\u7559\u5927\u91cf\u7a7a\u4f4d\u7f6e&#xff0c;\u5982\u679c\u76f4\u63a5\u5e8f\u5217\u5316\u4f1a\u628a\u5927\u91cfnull\u7a7a\u95f4\u5199\u5165\u5b57\u8282\u6d41&#xff0c;\u4f53\u79ef\u81a8\u80c0\u3002<\/li>\n<li>\u91cd\u5199 writeObject&#xff0c;\u53ea\u5e8f\u5217\u5316\u6570\u7ec4\u4e2d\u6709\u6548size\u4e2a\u5143\u7d20&#xff1b;<\/li>\n<li>readObject\u8bfb\u53d6\u65f6&#xff0c;\u518d\u91cd\u5efaelementData\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<p>HashMap\u540c\u7406&#xff0c;\u4f1a\u91cd\u65b0\u6784\u5efa\u54c8\u5e0c\u8868&#xff0c;\u4e0d\u4f1a\u76f4\u63a5\u5e8f\u5217\u5316table\u6570\u7ec4\u3002<\/p>\n<p>\u9762\u8bd5\u8003\u70b9&#xff1a;\u4e3a\u4ec0\u4e48\u96c6\u5408\u7c7b\u8981\u91cd\u5199writeObject\/readObject&#xff1f;\u51cf\u5c11\u5e8f\u5217\u5316\u5b57\u8282\u4f53\u79ef\u3002<\/p>\n<h3>\u4e03\u3001\u53cd\u5e8f\u5217\u5316\u9ad8\u5371\u5b89\u5168\u6f0f\u6d1e<\/h3>\n<h4>7.1 \u6f0f\u6d1e\u539f\u7406<\/h4>\n<p>Java\u539f\u751f\u53cd\u5e8f\u5217\u5316\u4e0d\u9700\u8981\u8c03\u7528\u4e1a\u52a1\u6784\u9020\u5668&#xff0c;\u8bfb\u53d6\u5b57\u8282\u5373\u53ef\u8fd8\u539f\u5bf9\u8c61\u3002 \u653b\u51fb\u8005\u6784\u9020\u6076\u610f\u5e8f\u5217\u5316\u5b57\u8282&#xff0c;\u7a0b\u5e8f\u53cd\u5e8f\u5217\u5316\u65f6&#xff0c;\u4f1a\u81ea\u52a8\u6267\u884c\u7c7b\u5185\u90e8readObject\u7b49\u903b\u8f91&#xff0c;\u914d\u5408\u7b2c\u4e09\u65b9\u5e93\u7684\u6076\u610f\u8c03\u7528\u94fe(Gadget)&#xff0c;\u5b9e\u73b0\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u3002<\/p>\n<p>\u53d7\u5f71\u54cd&#xff1a;JDK\u539f\u751f\u5e8f\u5217\u5316&#xff0c;\u53ea\u8981\u53cd\u5e8f\u5217\u5316\u4e0d\u53d7\u4fe1\u4efb\u7684\u5b57\u8282\u6d41\u5c31\u6709\u98ce\u9669\u3002 \u5386\u53f2\u4e2d\u62db\u7ec4\u4ef6&#xff1a;Commons\u2011Collections\u3001Commons\u2011Beanutils \u7b49\u3002<\/p>\n<h4>7.2 \u5206\u5c42\u9632\u5fa1\u7b56\u7565<\/h4>\n<li>\u6700\u9ad8\u539f\u5219&#xff1a;\u6c38\u8fdc\u4e0d\u8981\u53cd\u5e8f\u5217\u5316\u5916\u90e8\u4e0d\u53ef\u4fe1\u6765\u6e90\u7684\u6570\u636e&#xff0c;\u8fd9\u662f\u6839\u672c\u3002<\/li>\n<li>\u4f7f\u7528 ObjectInputFilter \u8bbe\u7f6e\u7c7b\u9ed1\u767d\u540d\u5355&#xff0c;\u62e6\u622a\u5371\u9669\u7c7b\u3002<\/li>\n<li>\u5728\u81ea\u5b9a\u4e49 readObject \u5185\u90e8\u505a\u4e25\u683c\u5b57\u6bb5\u6821\u9a8c&#xff0c;\u62d2\u7edd\u975e\u6cd5\u53c2\u6570\u3002<\/li>\n<li>\u4e1a\u52a1\u7cfb\u7edf&#xff0c;\u5c3d\u91cf\u5f7b\u5e95\u653e\u5f03Java\u539f\u751f\u5e8f\u5217\u5316&#xff0c;\u4f7f\u7528JSON\u3001Protobuf\u66ff\u4ee3\u3002<\/li>\n<h3>\u516b\u3001\u5176\u4ed6\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u5e8f\u5217\u5316\u5751<\/h3>\n<li>final\u4fee\u9970\u7684\u5b57\u6bb5&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u5e8f\u5217\u5316\u8d4b\u503c&#xff0c;\u7ed5\u8fc7\u7f16\u8bd1\u671ffinal\u9650\u5236\u3002<\/li>\n<li>\u4e0d\u540c\u7c7b\u52a0\u8f7d\u5668\u573a\u666f&#xff1a;\u7c7b\u5168\u9650\u5b9a\u540d\u4e00\u6837&#xff0c;\u7c7b\u52a0\u8f7d\u5668\u4e0d\u540c&#xff0c;\u53cd\u5e8f\u5217\u5316\u629b\u51fa\u7c7b\u578b\u4e0d\u5339\u914d\u5f02\u5e38\u3002<\/li>\n<li>\u5f15\u7528\u7c7b\u578b&#xff1a;SoftReference\u3001WeakReference\u5e8f\u5217\u5316\u4e4b\u540e\u5f15\u7528\u4f1a\u4e22\u5931\u3002<\/li>\n<li>\u679a\u4e3e&#xff1a;\u679a\u4e3e\u5e8f\u5217\u5316\u4f9d\u9760\u679a\u4e3e\u540d\u5b57&#xff0c;\u4fee\u6539\u679a\u4e3e\u5e38\u91cf\u540d\u5b57&#xff0c;\u65e7\u5b57\u8282\u6d41\u53cd\u5e8f\u5217\u5316\u76f4\u63a5\u62a5\u9519\u3002<\/li>\n<li>\u9759\u6001\u5185\u90e8\u7c7b\u53ef\u4ee5\u5e8f\u5217\u5316&#xff1b;\u975e\u9759\u6001\u5185\u90e8\u7c7b\u81ea\u5e26\u5916\u90e8\u7c7b\u9690\u5f0f\u5f15\u7528&#xff0c;\u6781\u6613\u5e8f\u5217\u5316\u5931\u8d25&#xff0c;\u4e1a\u52a1\u7981\u6b62\u5e8f\u5217\u5316\u975e\u9759\u6001\u5185\u90e8\u7c7b\u3002<\/li>\n<h3>\u4e5d\u3001JDK\u7248\u672c\u6f14\u8fdb&#xff1a;\u539f\u751f\u5e8f\u5217\u5316\u73b0\u72b6<\/h3>\n<ul>\n<li>JDK8&#xff1a;\u5e8f\u5217\u5316\u5b8c\u6574\u53ef\u7528&#xff0c;\u6ca1\u6709\u6807\u8bb0\u5e9f\u5f03&#xff1b;ObjectInputFilter\u9700\u8981\u5347\u7ea7\u5c0f\u7248\u672c\u3002<\/li>\n<li>JDK9&#xff1a;\u539f\u751f\u5e8f\u5217\u5316\u88ab\u6807\u8bb0\u4e3a Legacy&#xff08;\u9057\u7559\u673a\u5236&#xff09;&#xff0c;\u5b98\u65b9\u660e\u786e\u4e0d\u63a8\u8350\u7ee7\u7eed\u4f7f\u7528\u3002<\/li>\n<li>Java17\/21&#xff1a;\u63d0\u4f9b\u5f00\u5173\u53ef\u4ee5\u7981\u7528\u539f\u751f\u5e8f\u5217\u5316&#xff1b;\u672a\u6765\u7248\u672c\u4f1a\u9010\u6b65\u79fb\u9664\u3002<\/li>\n<\/ul>\n<p>\u91cd\u70b9&#xff1a;\u9762\u8bd5\u7ecf\u5e38\u95ee&#xff0c;Java\u5b98\u65b9\u5bf9\u539f\u751f\u5e8f\u5217\u5316\u7684\u6001\u5ea6\u3002<\/p>\n<h3>\u5341\u3001\u6570\u636e\u5e93\u5b58\u50a8\u573a\u666f\u5e8f\u5217\u5316\u5b9e\u6218\u89c4\u8303<\/h3>\n<p>\u5f88\u591a\u9879\u76ee\u4f1a\u76f4\u63a5\u628a Java \u5e8f\u5217\u5316\u540e\u7684\u4e8c\u8fdb\u5236\u5b57\u8282\u5b58\u5165\u6570\u636e\u5e93BLOB\u5b57\u6bb5&#xff0c;\u8fd9\u91cc\u6709\u5927\u91cf\u7ebf\u4e0a\u8e29\u5751\u70b9\u3002<\/p>\n<h4>10.1 \u91cd\u8981\u6982\u5ff5\u533a\u5206<\/h4>\n<p>\u6570\u636e\u5e93\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b SERIALIZABLE \u548c Java \u5bf9\u8c61\u5e8f\u5217\u5316\u5b8c\u5168\u65e0\u5173&#xff0c;\u4e0d\u8981\u6df7\u6dc6\u3002<\/p>\n<h4>10.2 \u51e0\u79cd\u5b58\u50a8\u65b9\u6848\u5bf9\u6bd4<\/h4>\n<li>Java\u539f\u751f\u5e8f\u5217\u5316\u4e8c\u8fdb\u5236&#xff08;BLOB&#xff09; \u4e0d\u5efa\u8bae\u4e1a\u52a1\u4f7f\u7528\u3002 \u7f3a\u70b9&#xff1a;\u7248\u672c\u5347\u7ea7\u6781\u6613\u53cd\u5e8f\u5217\u5316\u5931\u8d25&#xff1b;\u53ef\u8bfb\u6027\u4e3a0&#xff1b;\u6570\u636e\u5e93\u65e0\u6cd5\u505a\u6761\u4ef6\u67e5\u8be2&#xff1b;\u8de8\u8bed\u8a00\u5b8c\u5168\u4e0d\u517c\u5bb9&#xff1b;\u5b58\u5728\u53cd\u5e8f\u5217\u5316\u5b89\u5168\u98ce\u9669\u3002<\/li>\n<li>JSON\u5b57\u7b26\u4e32&#xff08;VARCHAR \/ TEXT&#xff09; \u4e1a\u52a1\u6700\u5e38\u7528\u65b9\u6848\u3002 \u4f18\u70b9&#xff1a;\u53ef\u8bfb\u6027\u597d&#xff0c;\u6570\u636e\u5e93\u652f\u6301JSON\u51fd\u6570\u67e5\u8be2&#xff1b;\u8de8\u8bed\u8a00\u517c\u5bb9&#xff1b;\u7248\u672c\u5411\u524d\u5411\u540e\u517c\u5bb9\u597d\u3002 \u7f3a\u70b9&#xff1a;\u4f53\u79ef\u76f8\u6bd4\u4e8c\u8fdb\u5236\u504f\u5927\u3002<\/li>\n<li>Protobuf \/ Hessian \u4e8c\u8fdb\u5236 \u9002\u5408\u9ad8\u6027\u80fd\u5185\u90e8\u7cfb\u7edf\u3002 \u4f18\u70b9&#xff1a;\u4f53\u79ef\u5c0f&#xff0c;\u5e8f\u5217\u5316\u6027\u80fd\u9ad8&#xff0c;\u7248\u672c\u517c\u5bb9\u6027\u5f3a\u3002 \u7f3a\u70b9&#xff1a;\u6570\u636e\u5e93\u4e0d\u80fd\u76f4\u63a5\u89e3\u6790\u67e5\u8be2&#xff0c;\u8c03\u8bd5\u4e0d\u65b9\u4fbf\u3002<\/li>\n<li>XML \u57fa\u672c\u6dd8\u6c70&#xff0c;\u4f53\u79ef\u5197\u4f59\u5927\u3002<\/li>\n<h4>10.3 \u4ec0\u4e48\u573a\u666f\u53ef\u4ee5\u628a\u5bf9\u8c61\u5e8f\u5217\u5316\u5b58\u5165\u6570\u636e\u5e93<\/h4>\n<p>\u9002\u5408&#xff1a;\u5bf9\u8c61\u6574\u4f53\u4fdd\u5b58\u3001\u6574\u4f53\u8bfb\u53d6&#xff0c;\u51e0\u4e4e\u4e0d\u4f1a\u505awhere\u6761\u4ef6\u67e5\u8be2\u3001\u4e0d\u9700\u8981join\u5173\u8054\u7684\u6570\u636e\u3002 \u4f8b\u5982&#xff1a;\u6d41\u7a0b\u5feb\u7167\u3001\u5386\u53f2\u5907\u4efd\u5feb\u7167\u3001\u7f13\u5b58\u5907\u4efd\u3002<\/p>\n<h4>10.4 \u4ec0\u4e48\u573a\u666f\u7edd\u5bf9\u4e0d\u8981\u5e8f\u5217\u5316\u5b58\u50a8<\/h4>\n<p>\u9700\u8981\u6309\u5bf9\u8c61\u5185\u90e8\u5b57\u6bb5\u505a\u67e5\u8be2\u3001\u8fc7\u6ee4\u3001\u7edf\u8ba1\u3001\u5173\u8054\u67e5\u8be2&#xff0c;\u5fc5\u987b\u62c6\u6210\u6570\u636e\u5e93\u666e\u901a\u8868\u5b57\u6bb5&#xff0c;\u4e0d\u8981\u585e\u4e8c\u8fdb\u5236\u5927\u5b57\u6bb5\u3002<\/p>\n<h4>10.5 \u5386\u53f2\u9057\u7559\u7cfb\u7edf\u6ce8\u610f\u4e8b\u9879<\/h4>\n<p>\u8001\u9879\u76ee\u5df2\u7ecf\u4f7f\u7528Java\u5e8f\u5217\u5316BLOB\u5b58\u5165\u6570\u636e\u5e93&#xff1a;<\/p>\n<li>\u7c7b\u5347\u7ea7\u52a1\u5fc5\u7ef4\u62a4\u597dserialVersionUID&#xff1b;<\/li>\n<li>\u7981\u6b62\u968f\u610f\u4fee\u6539\u7c7b\u7ee7\u627f\u3001\u5b57\u6bb5\u7c7b\u578b&#xff1b;<\/li>\n<li>\u5c3d\u91cf\u505a\u6570\u636e\u8fc1\u79fb&#xff0c;\u9010\u6b65\u8f6c\u4e3aJSON\u5b58\u50a8\u3002<\/li>\n<h3>\u5341\u4e00\u3001\u751f\u4ea7\u73af\u5883\u5b8c\u6574\u6700\u4f73\u5b9e\u8df5\u603b\u7ed3<\/h3>\n<li>\u5982\u679c\u4e1a\u52a1\u8feb\u4e0d\u5f97\u5df2\u8981\u5b9e\u73b0Serializable&#xff1a;\n<ul>\n<li>\u624b\u5199\u56fa\u5b9a 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