{"id":988,"date":"2021-02-23T21:29:39","date_gmt":"2021-02-23T13:29:39","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=988"},"modified":"2021-02-23T21:47:52","modified_gmt":"2021-02-23T13:47:52","slug":"%e6%b3%a8%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-988.html","title":{"rendered":"\u6ce8\u89e3"},"content":{"rendered":"\n<p>\u6ce8\u89e3\u662f java 5 \u7684\u4e00\u4e2a\u65b0\u7279\u6027<\/p>\n\n\n\n<p>\u6ce8\u89e3\u7684\u82f1\u6587: Annotation, \u53ef\u4ee5\u7406\u89e3\u4e3a\u4e13\u95e8\u7ed9\u7cfb\u7edf\u770b\u7684\u4e00\u79cd\u6587\u4ef6<\/p>\n\n\n\n<p>\u6ce8\u89e3\u4e3b\u8981\u6709 3 \u79cd\u4f5c\u7528<\/p>\n\n\n\n<ul><li>\u7f16\u5199\u6587\u6863 &#8211;> \u5236\u4f5c\u6587\u6863<\/li><li>\u4ee3\u7801\u5206\u6790 &#8211;>\u529f\u80fd\u6ce8\u89e3\uff0c\u539f\u7406\u662f\u53cd\u5c04<\/li><li>\u7f16\u8bd1\u5206\u6790 &#8211;>\u7f16\u8bd1\u68c0\u67e5<\/li><\/ul>\n\n\n\n<p>jdk\u5185\u7f6e\u6ce8\u89e3:@Override\u8986\u76d6, @Override\u5df2\u8fc7\u65f6, @SuppressWarnings\u538b\u5236\u8b66\u544a<\/p>\n\n\n\n<h5>1.\u751f\u6210java\u6587\u6863<\/h5>\n\n\n\n<p>\u901a\u5e38\u4e5f\u5c31\u662f\u4f7f\u7528\u6587\u6863\u6ce8\u91ca\uff0c\u914d\u5408 javadoc \u547d\u4ee4\u751f\u6210 java \u6587\u4ef6\uff0c\u5982 jdk-api \u6587\u6863<\/p>\n\n\n\n<p>\u53ef\u4ee5\u4f7f\u7528 cmd\uff0c\u8f93\u5165 javadoc Demo.java \u751f\u6210java\u6587\u6863\uff0c<\/p>\n\n\n\n<p>\u6b64\u5916\uff0c\u63a8\u8350\u4f7f\u7528 idea \uff0c\u4f7f\u7528 Tools &#8211;&gt; General javadoc \u751f\u6210\u6574\u4e2a\u9879\u76ee\u6587\u6863<\/p>\n\n\n\n<p>\u9ed8\u8ba4\u751f\u6210\u7684\u662f html\uff0c\u53ef\u4ee5\u76f4\u63a5\u4e0a\u4f20\u5230\u7f51\u7ad9\uff0c\u6216\u5236\u4f5c chm<\/p>\n\n\n\n<h5>2.\u81ea\u5b9a\u4e49\u6ce8\u89e3<\/h5>\n\n\n\n<p>\u6ce8\u89e3\u7684\u672c\u8d28\u662f\u4e00\u4e2a\u7ee7\u627f java.lang.annotation.Annotation \u7684\u63a5\u53e3<\/p>\n\n\n\n<p>1.\u6ce8\u89e3\u7684\u5b9a\u4e49<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5143\u6ce8\u89e3\npublic @interface \u6ce8\u89e3\u540d\u79f0{}<\/code><\/pre>\n\n\n\n<p>2.\u6ce8\u89e3\u4f53<\/p>\n\n\n\n<p>\u6ce8\u89e3\u4f53\u4e2d\u53ef\u4ee5\u5b9a\u4e49\u5c5e\u6027\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u4f7f\u7528\u65f6\u9700\u8981\u8d4b\u503c\uff0c<\/p>\n\n\n\n<ul><li>\u57fa\u672c\u6570\u636e\u7c7b\u578b<\/li><li>String<\/li><li>\u679a\u4e3e<\/li><li>\u6ce8\u89e3<\/li><li>\u4e0a\u9762\u51e0\u79cd\u7c7b\u578b\u7684\u6570\u7ec4<\/li><\/ul>\n\n\n\n<p>\u5982\u679c\u662f\u9ed8\u8ba4\u503c\u53ef\u4ee5\u4e0d\u8d4b\u503c\uff0cvalue\u53ef\u4e0d\u5199key\uff0c\u6570\u7ec4\u4f7f\u7528 {}, \u5176\u4f59\u4f7f\u7528 key=value<\/p>\n\n\n\n<p>3.\u5143\u6ce8\u89e3\uff1a\u7528\u4e8e\u63cf\u8ff0\u6ce8\u89e3\u7684\u6ce8\u89e3\uff08\u4e86\u89e3\u4ee5\u4e0b4\u4e2a\u5143\u6ce8\u89e3\uff09<\/p>\n\n\n\n<ol><li>@Target\uff1a\u63cf\u8ff0\u6ce8\u89e3\u80fd\u591f\u4f5c\u7528\u7684\u4f4d\u7f6e<ul><li>ElementType\u53d6\u503c<ul><li>TYPE\uff1a\u53ef\u4ee5\u4f5c\u7528\u4e8e\u7c7b\u4e0a<\/li><li>METHOD\uff1a\u53ef\u4ee5\u4f5c\u7528\u4e8e\u65b9\u6cd5\u4e0a<\/li><li>FIELD\uff1a\u53ef\u4ee5\u4f5c\u7528\u4e8e\u6210\u5458\u53d8\u91cf\u4e0a<\/li><\/ul><\/li><\/ul><\/li><li>@Retention\uff1a\u63cf\u8ff0\u6ce8\u89e3\u88ab\u4fdd\u7559\u7684\u9636\u6bb5<ul><li>@Retention(RetentionPolicy.RUNTIME)\uff1a\u5f53\u524d\u88ab\u63cf\u8ff0\u7684\u6ce8\u89e3\uff0c\u4f1a\u4fdd\u7559\u5230class\u5b57\u8282\u7801\u6587\u4ef6\u4e2d\uff0c\u5e76\u88abJVM\u8bfb\u53d6\u5230<\/li><\/ul><\/li><li>@Documented\uff1a\u63cf\u8ff0\u6ce8\u89e3\u662f\u5426\u88ab\u62bd\u53d6\u5230api\u6587\u6863\u4e2d<\/li><li>@Inherited\uff1a\u63cf\u8ff0\u6ce8\u89e3\u662f\u5426\u88ab\u5b50\u7c7b\u7ee7\u627f<\/li><\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u6ce8\u89e3\u662f java 5 \u7684\u4e00\u4e2a\u65b0\u7279\u6027 \u6ce8\u89e3\u7684\u82f1\u6587: Annotation, \u53ef\u4ee5\u7406\u89e3\u4e3a\u4e13\u95e8\u7ed9\u7cfb\u7edf\u770b\u7684\u4e00\u79cd\u6587\u4ef6 \u6ce8&hellip; 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