{"id":31126,"date":"2024-03-04T03:17:16","date_gmt":"2023-05-15T20:41:06","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%ad%a6%e4%b9%a0%e5%85%b3%e4%ba%8ejava%e4%b8%ad%e7%9a%84%e6%b3%a8%e8%a7%a3%e3%80%82\/"},"modified":"2025-08-12T22:27:44","modified_gmt":"2025-08-12T14:27:44","slug":"%e5%ad%a6%e4%b9%a0%e5%85%b3%e4%ba%8ejava%e4%b8%ad%e7%9a%84%e6%b3%a8%e8%a7%a3%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%ad%a6%e4%b9%a0%e5%85%b3%e4%ba%8ejava%e4%b8%ad%e7%9a%84%e6%b3%a8%e8%a7%a3%e3%80%82\/","title":{"rendered":"\u5b66\u4e60\u5173\u4e8eJava\u4e2d\u7684\u6ce8\u89e3"},"content":{"rendered":"<p>\u5728\u5b66\u4e60Java\u7684\u6ce8\u89e3\u65f6\uff0c\u6211\u987a\u4fbf\u6574\u7406\u4e86\u4e00\u4e0b\u3002\u8fd9\u7bc7\u6587\u7ae0\u662f\u5173\u4e8e\u6ce8\u89e3\u7684\u57fa\u672c\u8bed\u6cd5\u548c\u7528\u6cd5\u7684\u89e3\u91ca\u3002\u6709\u4e00\u4e9b\u90e8\u5206\u662f\u5728\u548cchatGTP\u8fdb\u884c\u95ee\u7b54\u7684\u8fc7\u7a0b\u4e2d\u7406\u89e3\u7684\uff0c\u6240\u4ee5\u793a\u4f8b\u7b49\u5185\u5bb9\u5927\u90e8\u5206\u662f\u7531GPT\u751f\u6210\u7684\u3002<\/p>\n<h1>\u57fa\u672c\u7684\u6ce8\u91ca\u7684\u7528\u6cd5\u548c\u6982\u8ff0<\/p>\n<h2>\u9996\u5148\uff0c\u4ec0\u4e48\u662f\u6807\u6ce8\uff1f<\/p>\n<p>\u76f4\u8bd1\u7684\u610f\u601d\u662f\u201c\u6ce8\u91ca\u201d\u3002<br \/>\n\u6ce8\u91ca\u662f\u6307\u201c\u5bf9\u8bcd\u8bed\u6216\u53e5\u5b50\u8fdb\u884c\u7b80\u660e\u89e3\u91ca\u7684\u4e1c\u897f\u201d\u3002<\/p>\n<h2>\u5728Java\u4e2d\uff0c\u6ce8\u89e3\u662f\u6307\u5143\u6570\u636e\u6807\u8bb0\u7684\u4e00\u79cd\u65b9\u6cd5\u3002<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u5c06\u4e0e\u5e94\u7528\u7a0b\u5e8f\u903b\u8f91\u65e0\u76f4\u63a5\u5173\u8054\u7684\u9644\u52a0\u4fe1\u606f\uff08\u5143\u6570\u636e\uff09\u6dfb\u52a0\u5230\u4ee3\u7801\u4e2d\u6765\u5b9e\u73b0\u3002Java\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9884\u5b9a\u4e49\u7684&#8221;\u6807\u51c6\u6ce8\u89e3&#8221;\uff0c\u4e5f\u53ef\u4ee5\u521b\u5efa\u81ea\u5b9a\u4e49\u7684\u539f\u59cb\u6ce8\u89e3\u3002<\/p>\n<p>\u5728Spring Framework\u4e2d\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6ce8\u89e3\u3002<br \/>\n\u5982\u679c\u60f3\u8981\u8ba9\u6846\u67b6\u7684\u6269\u5c55\u529f\u80fd\u5177\u6709\u7279\u5b9a\u7684\u884c\u4e3a\u6216\u64cd\u4f5c\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u5229\u7528\u6ce8\u89e3\u3002<\/p>\n<h2>\u4f7f\u7528\u65b9\u6cd5<\/p>\n<p>\u57fa\u672c\u7684\u7684\u6ce8\u89e3\u8bed\u6cd5\u4ece@\u7b26\u53f7\u5f00\u59cb\uff0c\u7136\u540e\u8ddf\u7740\u6ce8\u89e3\u7684\u540d\u79f0\u3002<br \/>\n\u5728\u6dfb\u52a0\u6ce8\u89e3\u65f6\uff0c\u5c06\u5176\u653e\u5728\u7c7b\u3001\u63a5\u53e3\u3001\u65b9\u6cd5\u7b49\u5143\u7d20\u7684\u5f00\u5934\u3002<br \/>\n\u5177\u4f53\u7684\u63cf\u8ff0\u793a\u4f8b\u5c06\u5728\u540e\u9762\u8bf4\u660e\u3002<\/p>\n<h2>\u4f7f\u7528\u6807\u6ce8\u7684\u597d\u5904<\/p>\n<h3>\u80fd\u591f\u660e\u786e\u8868\u793a\u4ee3\u7801\u7684\u542b\u4e49<\/p>\n<p>@override\u7b49\u6307\u660e\u4e86\u65b9\u6cd5\u5728\u7236\u7c7b\u4e2d\u88ab\u91cd\u5199\uff0c\u4e3a\u4ee3\u7801\u8bfb\u8005\u63d0\u4f9b\u4e86\u4ee3\u7801\u7684\u542b\u4e49\u3002<\/p>\n<h3>\u5229\u7528\u9759\u6001\u5206\u6790\u6765\u89e3\u51b3\u95ee\u9898\u7684\u65e9\u671f\u3002<\/p>\n<p>\u901a\u8fc7\u4f7f\u7528\u9759\u6001\u5206\u6790\u5de5\u5177\u548c\u96c6\u6210\u5f00\u53d1\u73af\u5883\uff0c\u53ef\u4ee5\u53ca\u65e9\u53d1\u73b0\u9519\u8bef\u548c\u95ee\u9898\u7684\u8b66\u544a\u3002<br \/>\n\u8fd9\u53ef\u4ee5\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002<\/p>\n<h1>\u5173\u4e8e\u6807\u51c6\u6ce8\u91ca<\/p>\n<p>\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u6307\u7684\u662f\u5167\u5efa\u65bc\u7a0b\u5f0f\u5eab\u4e2d\u7684\u6a19\u6e96\u8a3b\u89e3\u3002\u7531\u65bc\u7121\u6cd5\u4e00\u4e00\u5217\u8209\u6240\u6709\uff0c\u56e0\u6b64\u53ea\u4ecb\u7d39\u4e00\u4e9b\u4ee3\u8868\u6027\u7684\u8a3b\u89e3\u3002<\/p>\n<h2>@\u8986\u76d6<\/p>\n<p>\u65b9\u6cd5\u8868\u660e\u5728\u7236\u7c7b\u4e2d\u88ab\u8986\u76d6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">MyBaseClass<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">myMethod<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"c1\">\/\/ \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u88c5<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">MyDerivedClass<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">MyBaseClass<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nd\">@Override<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">myMethod<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"c1\">\/\/ \u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u305f\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u88c5<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\uff20\u8fc7\u65f6\u7684<\/p>\n<p>\u8868\u660e\u8be5\u65b9\u6cd5\u6216\u7c7b\u5df2\u88ab\u5b98\u65b9\u4e0d\u63a8\u8350\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">DeprecatedExample<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nd\">@Deprecated<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">oldMethod<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"c1\">\/\/ \u53e4\u3044\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u88c5<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u5ffd\u7565\u8b66\u544a<\/p>\n<p>\u4e3a\u4e86\u6291\u5236\u7279\u5b9a\u8b66\u544a\uff0c\u53ef\u4ee5\u4f7f\u7528\u6ce8\u91ca\u3002<br \/>\n\u5982\u4e0b\u793a\u4f8b\u4e2d\uff0c\u91c7\u7528\u6ce8\u91ca\u6765\u6291\u5236\u7f16\u8bd1\u65f6\u7684\u8fc7\u65f6\u8b66\u544a\u3002<br \/>\n\u6ce8\u91ca\u7684\u53c2\u6570\u53ef\u4ee5\u5728\u62ec\u53f7\u5185\u6307\u5b9a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">SuppressWarningExample<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nd\">@SuppressWarnings<\/span><span class=\"o\">(<\/span><span class=\"s\">\"deprecation\"<\/span><span class=\"o\">)<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">useDeprecatedMethod<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"c1\">\/\/ \u975e\u63a8\u5968\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u304c\u3001\u8b66\u544a\u3092\u6291\u5236<\/span>\r\n        <span class=\"nc\">DeprecatedExample<\/span> <span class=\"n\">deprecatedExample<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">DeprecatedExample<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"n\">deprecatedExample<\/span><span class=\"o\">.<\/span><span class=\"na\">oldMethod<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u4f7f\u7528\u81ea\u5b9a\u4e49\u6ce8\u91ca<\/p>\n<p>\u53ef\u4ee5\u521b\u5efa\u72ec\u7acb\u7684\u6ce8\u91ca\u3002<br \/>\n\u4f46\u662f\u8981\u6ce8\u610f\uff0c\u6ee5\u7528\u4f1a\u5bfc\u81f4\u4ee3\u7801\u96be\u4ee5\u9605\u8bfb\uff0c\u964d\u4f4e\u53ef\u8bfb\u6027\u3002<\/p>\n<h2>\u521b\u5efa\u5b9a\u5236\u6ce8\u91ca<\/p>\n<p>\u8981\u81ea\u5236\u6279\u6ce8\u6807\u8bb0\uff0c\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u7684&#8221;\u5143\u6279\u6ce8&#8221;\u3002<\/p>\n<h3>@\u4fdd\u7559\uff1a\u6307\u5b9a\u6ce8\u91ca\u7684\u4fdd\u7559\u671f\u9650<\/p>\n<p>\u5728Java\u4e2d\u5b58\u5728\u7740\u4ee5\u4e0b\u4e09\u9879\u7b56\u7565\u3002<\/p>\n<ul class=\"post-ul\">\nRetentionPolicy.SOURCE\uff08\u30bd\u30fc\u30b9\u30ec\u30d9\u30eb\uff09<br \/>\n\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u5185\u3067\u306e\u307f\u6709\u52b9\u3067\u3042\u308a\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u53d6\u308a\u9664\u304b\u308c\u308b\u3002\u5b9f\u884c\u6642\u306b\u306f\u5229\u7528\u3067\u304d\u306a\u3044\u3002<br \/>\n\u4e3b\u306b\u30b3\u30fc\u30c9\u751f\u6210\u306a\u3069\u306e\u30c4\u30fc\u30eb\u304c\u4f7f\u7528\u3059\u308b\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u308b\u3089\u3057\u3044\u3002<br \/>\nRetentionPolicy.CLASS\uff08\u30af\u30e9\u30b9\u30ec\u30d9\u30eb\uff09<br \/>\n\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u6301\u3055\u308c\u308b\u304c\u3001\u5b9f\u884c\u6642\u306b\u306f\u5229\u7528\u51fa\u6765\u306a\u3044\u3002<br \/>\n\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u305b\u305a\u306b\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30bb\u30c3\u30b5\u304c\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u969b\u306b\u5229\u7528\u3059\u308b\u3089\u3057\u3044\u3002<br \/>\nRetentionPolicy.RUNTIME\uff08\u5b9f\u884c\u6642\uff09<br \/>\n\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u6301\u3055\u308c\u3001\u5b9f\u884c\u6642\u306b\u3082\u5229\u7528\u51fa\u6765\u308b\u3002<br \/>\n\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u884c\u6642\u306b\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u3001\u3053\u306e\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u30dd\u30ea\u30b7\u30fc\u304c\u5fc5\u8981\u3089\u3057\u3044\u3002\n<\/ul>\n<p>\u203b\u53cd\u601d\u662f\u6307\u7a0b\u5e8f\u81ea\u884c\u8c03\u67e5\u6216\u64cd\u4f5c\u5176\u81ea\u8eab\u7ed3\u6784\u7684\u673a\u5236\u3002<\/p>\n<h3>@\u76ee\u6807\uff1a\u6307\u5b9a\u6ce8\u89e3\u53ef\u4ee5\u5e94\u7528\u4e8e\u54ea\u79cd\u7c7b\u578b\u7684\u5143\u7d20\u3002<\/p>\n<ul class=\"post-ul\">\nElementType.METHOD<br \/>\n\u30e1\u30bd\u30c3\u30c9\u306b\u5bfe\u3057\u3066\u9069\u7528\u3059\u308b\u969b\u306b\u6307\u5b9a\u3059\u308b<br \/>\nElementType.TYPE<br \/>\n\u30af\u30e9\u30b9\u306b\u5bfe\u3057\u3066\u9069\u7528\u3059\u308b\u969b\u306b\u6307\u5b9a\u3059\u308b<br \/>\nElementType.FIELD<br \/>\n\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3057\u3066\u9069\u7528\u3059\u308b\u969b\u306b\u6307\u5b9a\u3059\u308b<br \/>\nElementType.CONSTRUCTOR<br \/>\n\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306b\u5bfe\u3057\u3066\u9069\u7528\u3059\u308b\u969b\u306b\u6307\u5b9a\u3059\u308b\n<\/ul>\n<h3>\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u300cMyCustomAnnotation\u300d\u7684\u6ce8\u91ca\u7684\u793a\u4f8b\u3002<\/p>\n<p>ChatGPT\u5e2e\u52a9\u7406\u89e3\u65f6\u7684\u4e00\u4e2a\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">java.lang.annotation.ElementType<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.lang.annotation.Retention<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.lang.annotation.RetentionPolicy<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.lang.annotation.Target<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u5b9a\u7fa9<\/span>\r\n<span class=\"nd\">@Retention<\/span><span class=\"o\">(<\/span><span class=\"nc\">RetentionPolicy<\/span><span class=\"o\">.<\/span><span class=\"na\">RUNTIME<\/span><span class=\"o\">)<\/span>\r\n<span class=\"nd\">@Target<\/span><span class=\"o\">(<\/span><span class=\"nc\">ElementType<\/span><span class=\"o\">.<\/span><span class=\"na\">METHOD<\/span><span class=\"o\">)<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"nd\">@interface<\/span> <span class=\"nc\">MyCustomAnnotation<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nc\">String<\/span> <span class=\"nf\">value<\/span><span class=\"o\">()<\/span> <span class=\"k\">default<\/span> <span class=\"s\">\"Default Value\"<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"nf\">count<\/span><span class=\"o\">()<\/span> <span class=\"k\">default<\/span> <span class=\"mi\">1<\/span><span class=\"o\">;<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728main\u65b9\u6cd5\u4e2d\u4f7f\u7528\u81ea\u5df1\u7f16\u5199\u7684\u6ce8\u89e3\uff0c\u901a\u8fc7\u53cd\u5c04\u7684\u65b9\u5f0f\u6267\u884cmyAnnotatedMethod\u3002\u52a8\u6001\u5730\u8f93\u51famyAnnotatedMethod\u4e2d\u9644\u5e26\u7684\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">java.lang.reflect.Method<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">MyClass<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"nd\">@MyCustomAnnotation<\/span><span class=\"o\">(<\/span><span class=\"n\">value<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"Custom Value\"<\/span><span class=\"o\">,<\/span> <span class=\"n\">count<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"o\">)<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">myAnnotatedMethod<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Executing myAnnotatedMethod\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"c1\">\/\/ \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u60c5\u5831\u3092\u53d6\u5f97<\/span>\r\n        <span class=\"k\">try<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"c1\">\/\/ myAnnotatedMethod\u30e1\u30bd\u30c3\u30c9\u306b\u4ed8\u4e0e\u3055\u308c\u305f\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u53d6\u5f97<\/span>\r\n            <span class=\"nc\">Method<\/span> <span class=\"n\">method<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">MyClass<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">.<\/span><span class=\"na\">getMethod<\/span><span class=\"o\">(<\/span><span class=\"s\">\"myAnnotatedMethod\"<\/span><span class=\"o\">);<\/span>\r\n            <span class=\"nc\">MyCustomAnnotation<\/span> <span class=\"n\">annotation<\/span> <span class=\"o\">=<\/span> <span class=\"n\">method<\/span><span class=\"o\">.<\/span><span class=\"na\">getAnnotation<\/span><span class=\"o\">(<\/span><span class=\"nc\">MyCustomAnnotation<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n\r\n            <span class=\"c1\">\/\/ \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u60c5\u5831\u3092\u8868\u793a<\/span>\r\n            <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">annotation<\/span> <span class=\"o\">!=<\/span> <span class=\"kc\">null<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n                <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Value: \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">annotation<\/span><span class=\"o\">.<\/span><span class=\"na\">value<\/span><span class=\"o\">());<\/span>\r\n                <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Count: \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">annotation<\/span><span class=\"o\">.<\/span><span class=\"na\">count<\/span><span class=\"o\">());<\/span>\r\n            <span class=\"o\">}<\/span>\r\n\r\n            <span class=\"c1\">\/\/ \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u60c5\u5831\u3092\u5229\u7528\u3057\u3066\u52d5\u7684\u306a\u632f\u308b\u821e\u3044\u3092\u5b9f\u73fe<\/span>\r\n            <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">annotation<\/span> <span class=\"o\">!=<\/span> <span class=\"kc\">null<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"n\">annotation<\/span><span class=\"o\">.<\/span><span class=\"na\">count<\/span><span class=\"o\">()<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">1<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n                <span class=\"k\">for<\/span> <span class=\"o\">(<\/span><span class=\"kt\">int<\/span> <span class=\"n\">i<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"o\">;<\/span> <span class=\"n\">i<\/span> <span class=\"o\">&lt;<\/span> <span class=\"n\">annotation<\/span><span class=\"o\">.<\/span><span class=\"na\">count<\/span><span class=\"o\">();<\/span> <span class=\"n\">i<\/span><span class=\"o\">++)<\/span> <span class=\"o\">{<\/span>\r\n                    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Executing myAnnotatedMethod iteration \"<\/span> <span class=\"o\">+<\/span> <span class=\"o\">(<\/span><span class=\"n\">i<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"o\">));<\/span>\r\n                    <span class=\"n\">method<\/span><span class=\"o\">.<\/span><span class=\"na\">invoke<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">MyClass<\/span><span class=\"o\">());<\/span> <span class=\"c1\">\/\/ \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c<\/span>\r\n                <span class=\"o\">}<\/span>\r\n            <span class=\"o\">}<\/span>\r\n\r\n        <span class=\"o\">}<\/span> <span class=\"k\">catch<\/span> <span class=\"o\">(<\/span><span class=\"nc\">ReflectiveOperationException<\/span> <span class=\"n\">e<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"n\">e<\/span><span class=\"o\">.<\/span><span class=\"na\">printStackTrace<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"o\">}<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u5173\u4e8eSpring\u6846\u67b6\u4e2d\u7684\u6ce8\u89e3\u3002<\/p>\n<p>\u5982\u679c\u6211\u4eec\u60f3\u8981\u4f7f\u7528\u6846\u67b6\u672c\u8eab\u7684\u6269\u5c55\u529f\u80fd\u6765\u5b9e\u73b0\u7279\u5b9a\u7684\u884c\u4e3a\u6216\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u5229\u7528\u5b83\u3002<br \/>\n\u7531\u4e8e\u65e0\u6cd5\u5217\u4e3e\u6240\u6709\u60c5\u51b5\uff0c\u6211\u5c06\u5217\u4e3e\u5728\u5de5\u4f5c\u4e2d\u7ecf\u5e38\u9047\u5230\u7684\u4e00\u4e9b\u6ce8\u89e3\u3002<\/p>\n<h2>@Controller \u63a7\u5236\u5668<\/p>\n<p>\u7528\u63a7\u5236\u5668\u7c7b\u6765\u8868\u793a<\/p>\n<h2>@Service\u8868\u793a<\/p>\n<p>\u8bc1\u660e\u5b83\u662f\u4e00\u4e2a\u670d\u52a1\u7c7b<\/p>\n<h2>@Repository<\/p>\n<p>\u8fd9\u8868\u793a\u4e86\u5b83\u662f\u4e00\u4e2a\u4ed3\u5e93\u7c7b\u3002<\/p>\n<h2>@RequestParam \u53c2\u6570<\/p>\n<p>\u8fd9\u88ab\u7528\u4e8e\u83b7\u53d6HTTP\u8bf7\u6c42\u7684\u53c2\u6570\u3002<\/p>\n<h2>@RequestMapping \u6ce8\u89e3<\/p>\n<p>\u7528\u4e8e\u5c06HTTP\u8bf7\u6c42\u6620\u5c04\u5230\u63a7\u5236\u5668\u65b9\u6cd5\u3002<br \/>\n\u901a\u8fc7\u8fd9\u6837\u505a\uff0c\u53ef\u4ee5\u6307\u5b9a\u54ea\u4e2aURL\u5bf9\u5e94\u54ea\u4e2a\u63a7\u5236\u5668\u65b9\u6cd5\u3002<\/p>\n<h2>\u4f7f\u7528@GetMapping<\/p>\n<p>\u7528\u4e8e\u6620\u5c04HTTP GET\u8bf7\u6c42\u548c\u63a7\u5236\u5668\u65b9\u6cd5\u3002<br \/>\n\u662f@RequestMapping\u7684\u7b80\u5316\u7248\u672c\u3002\u53ef\u4ee5\u5b9e\u73b0\u6bd4@RequestMapping\u66f4\u7b80\u6d01\u7684\u4ee3\u7801\u3002<\/p>\n<h2>\u53d1\u5e03\u8bf7\u6c42<\/p>\n<p>\u7528\u4e8e\u6620\u5c04HTTP POST\u8bf7\u6c42\u548c\u63a7\u5236\u5668\u65b9\u6cd5\u3002<br \/>\n\u662f@RequestMapping\u7684\u7b80\u5316\u7248\u672c\u3002\u80fd\u591f\u5b9e\u73b0\u66f4\u7b80\u6d01\u7684\u4ee3\u7801\u6bd4@RequestMapping\u3002<\/p>\n<h2>@Component \u7ec4\u4ef6<\/p>\n<p>Spring Framework\u7684\u7ec4\u4ef6\u626b\u63cf\u76ee\u6807\u7c7b\u4e0a\u4f7f\u7528\u7684\u6ce8\u89e3\u3002<br \/>\n\u7ec4\u4ef6\u626b\u63cf\u662f\u6307\u626b\u63cf\u7c7b\u52a0\u8f7d\u5668\u4ee5\u81ea\u52a8\u5c06\u7279\u5b9a\u7684\u7c7b\u6ce8\u518c\u5230DI\u5bb9\u5668\u4e2d\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684Bean\u3002<br \/>\n\u5f53\u68c0\u6d4b\u5230\u5e26\u6709@Component\u6ce8\u89e3\u7684\u7c7b\u65f6\uff0c\u5b83\u5c06\u88ab\u6ce8\u518c\u5230Spring\u5bb9\u5668\u4e2d\u3002<br \/>\n\u968f\u540e\uff0c\u5176\u4ed6\u7c7b\u5728\u4f7f\u7528\u8be5\u7ec4\u4ef6\u65f6\uff0c\u5b9e\u4f8b\u5c06\u901a\u8fc7\u4f9d\u8d56\u6ce8\u5165\u81ea\u52a8\u63d0\u4f9b\u3002<\/p>\n<h3>\uff08\u9644\u8a00\uff09Bean\u7684\u751f\u547d\u5468\u671f<\/p>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u975e\u5e38\u6613\u61c2\u3002<a><\/a><\/p>\n<h2>\u4f7f\u7528@Autowired<\/p>\n<p>\u5728Spring\u6846\u67b6\u4e2d\uff0c\u7528\u4e8e\u5b9e\u73b0\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u5e76\u81ea\u52a8\u6ce8\u5165\u5230\u7ec4\u4ef6\u6216Bean\u4e2d\u3002<br \/>\n\u901a\u8fc7\u5728\u5b57\u6bb5\u3001setter\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570\u4e0a\u4f7f\u7528@Autowired\u6ce8\u89e3\uff0cSpring\u5c06\u6ce8\u5165\u8be5\u7c7b\u7684\u5b9e\u4f8b\u7684\u4f9d\u8d56\u6027\u3002<\/p>\n<h1>\u8bf7\u60a8\u53c2\u8003\u4ee5\u4e0b\u5185\u5bb9\uff1a<a><\/a><a><\/a><a><\/a><a><\/a><a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5b66\u4e60Java\u7684\u6ce8\u89e3\u65f6\uff0c\u6211\u987a\u4fbf\u6574\u7406\u4e86\u4e00\u4e0b\u3002\u8fd9\u7bc7\u6587\u7ae0\u662f\u5173\u4e8e\u6ce8\u89e3\u7684\u57fa\u672c\u8bed\u6cd5\u548c\u7528\u6cd5\u7684\u89e3\u91ca\u3002\u6709\u4e00\u4e9b\u90e8\u5206\u662f\u5728\u548cchatG [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31126","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5b66\u4e60\u5173\u4e8eJava\u4e2d\u7684\u6ce8\u89e3 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u5b66\u4e60\u5173\u4e8eJava\u4e2d\u7684\u6ce8\u89e3\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5b66\u4e60\u5173\u4e8ejava\u4e2d\u7684\u6ce8\u89e3\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5b66\u4e60\u5173\u4e8eJava\u4e2d\u7684\u6ce8\u89e3\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u5b66\u4e60\u5173\u4e8eJava\u4e2d\u7684\u6ce8\u89e3\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5b66\u4e60\u5173\u4e8ejava\u4e2d\u7684\u6ce8\u89e3\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-15T20:41:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T14:27:44+00:00\" \/>\n<meta name=\"author\" content=\"\u79d1, \u9896\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u79d1, \u9896\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%ad%a6%e4%b9%a0%e5%85%b3%e4%ba%8ejava%e4%b8%ad%e7%9a%84%e6%b3%a8%e8%a7%a3%e3%80%82\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%ad%a6%e4%b9%a0%e5%85%b3%e4%ba%8ejava%e4%b8%ad%e7%9a%84%e6%b3%a8%e8%a7%a3%e3%80%82\/\",\"name\":\"\u5b66\u4e60\u5173\u4e8eJava\u4e2d\u7684\u6ce8\u89e3 - Blog - Silicon 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