{"id":29447,"date":"2023-05-12T11:42:25","date_gmt":"2023-05-12T03:42:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=29447"},"modified":"2023-07-30T23:52:30","modified_gmt":"2023-07-30T15:52:30","slug":"resource%e6%b3%a8%e8%a7%a3%e5%92%8cautowired%e6%b3%a8%e8%a7%a3%e7%9a%84%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/29447.html","title":{"rendered":"@Resource\u6ce8\u89e3\u548c@Autowired\u6ce8\u89e3\u7684\u533a\u522b"},"content":{"rendered":"<blockquote class=\"wp-block-quote\">\n<p>@Autowired\u6ce8\u89e3\u662fSpring\u63d0\u4f9b\u7684\uff0c\u800c@Resource\u6ce8\u89e3\u662fJ2EE\u672c\u8eab\u63d0\u4f9b\u7684\uff1b@Autowird\u6ce8\u89e3\u9ed8\u8ba4\u901a\u8fc7byType\u65b9\u5f0f\u6ce8\u5165\uff0c\u800c@Resource\u6ce8\u89e3\u9ed8\u8ba4\u901a\u8fc7byName\u65b9\u5f0f\u6ce8\u5165\uff1b@Autowired\u6ce8\u89e3\u6ce8\u5165\u7684\u5bf9\u8c61\u9700\u8981\u5728IOC\u5bb9\u5668\u4e2d\u5b58\u5728\uff0c\u5426\u5219\u9700\u8981\u52a0\u4e0a\u5c5e\u6027required=false\uff0c\u8868\u793a\u5ffd\u7565\u5f53\u524d\u8981\u6ce8\u5165\u7684bean\u3002<\/p>\n<\/blockquote>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" alt=\"\" class=\"wp-image-29448\" decoding=\"async\" height=\"421\" sizes=\"(max-width: 680px) 100vw, 680px\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u6dfb\u52a0\u6807\u9898-41.png?x-oss-process=image\/auto-orient,1\/format,webp\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u6dfb\u52a0\u6807\u9898-41.png?x-oss-process=image\/auto-orient,1\/format,webp 680w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u6dfb\u52a0\u6807\u9898-41-300x186.png 300w\" width=\"680\"\/><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><strong>\u4e00\u3001@Resource\u6ce8\u89e3\u548c@Autowired\u6ce8\u89e3\u7684\u533a\u522b<\/strong><\/h2>\n<p>@Autowired\u6ce8\u89e3\u662fSpring\u63d0\u4f9b\u7684\uff0c\u800c@Resource\u6ce8\u89e3\u662fJ2EE\u672c\u8eab\u63d0\u4f9b\u7684<\/p>\n<p>@Autowird\u6ce8\u89e3\u9ed8\u8ba4\u901a\u8fc7byType\u65b9\u5f0f\u6ce8\u5165\uff0c\u800c@Resource\u6ce8\u89e3\u9ed8\u8ba4\u901a\u8fc7byName\u65b9\u5f0f\u6ce8\u5165<\/p>\n<p>@Autowired\u6ce8\u89e3\u6ce8\u5165\u7684\u5bf9\u8c61\u9700\u8981\u5728IOC\u5bb9\u5668\u4e2d\u5b58\u5728\uff0c\u5426\u5219\u9700\u8981\u52a0\u4e0a\u5c5e\u6027required=false\uff0c\u8868\u793a\u5ffd\u7565\u5f53\u524d\u8981\u6ce8\u5165\u7684bean\uff0c\u5982\u679c\u6709\u76f4\u63a5\u6ce8\u5165\uff0c\u6ca1\u6709\u8df3\u8fc7\uff0c\u4e0d\u4f1a\u62a5\u9519<\/p>\n<p>\u5bf9\u4e8ebyName\u548cbyType\u65b9\u5f0f\u4e0d\u592a\u719f\u6089\u7684\u53ef\u4ee5\u770b\u4e00\u4e0b\u8fd9\u91cc\uff1aSpring\u4e2d\u7684byName\u4e0ebyType<\/p>\n<p>\u7b80\u5355\u6765\u8bf4\uff0cbyName\u5c31\u662f\u53d8\u91cf\u540d\u53bb\u5339\u914dbean\u7684id\u5c5e\u6027\uff0c\u800cbyType\u5219\u662f\u53d8\u91cf\u7c7b\u578b\u53bb\u5339\u914dbean\u7684class\u5c5e\u6027<\/p>\n<p>&lt;bean id=\u201duserService\u201d class=\u201dcom.test.UserServiceImpl\u201d&gt;<\/p>\n<p>&lt;\/bean&gt;<\/p>\n<p>@Autowired<\/p>\n<p>private UserService userService;<\/p>\n<p>\u6b64\u5904byName\u5c31\u662f\u62ff\u53d8\u91cf\u540duserService\u53bb\u5339\u914dIOC\u5bb9\u5668\u7684iduserService\uff0c\u5339\u914d\u6210\u529f\uff1b\u800cbyType\u5c31\u662f\u62ff\u53d8\u91cf\u7c7b\u578bUserService\u53bb\u5339\u914dIOC\u5bb9\u5668\u7684idcom.test.UserService.UserServiceImpl\uff0c\u56e0\u4e3aUserServiceImpl\u662fUserService\u5b9e\u73b0\uff0c\u6240\u4ee5\u4e5f\u5339\u914d\u6210\u529f\u3002<\/p>\n<p><strong>\u5ef6\u4f38\u9605\u8bfb\uff1a<\/strong><\/p>\n<h2 class=\"wp-block-heading\"><strong>\u4e8c\u3001@Autowird\u6ce8\u89e3\u7684\u4f7f\u7528<\/strong><\/h2>\n<p>\u6b65\u9aa4\uff1a@Autowird\u9ed8\u8ba4\u7684\u6ce8\u5165\u65b9\u5f0f\u4e3abyType\uff0c\u4e5f\u5c31\u662f\u6839\u636e\u7c7b\u578b\u5339\u914d\uff0c\u5f53\u6709\u591a\u4e2a\u5b9e\u73b0\u65f6\uff0c\u5219\u901a\u8fc7byName\u6ce8\u5165\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u914d\u5408@Qualifier\u6ce8\u89e3\u6765\u663e\u5f0f\u6307\u5b9aname\u503c\uff0c\u6307\u660e\u8981\u4f7f\u7528\u54ea\u4e2a\u5177\u4f53\u7684\u5b9e\u73b0\u7c7b<\/p>\n<p>\u4e3e\u4f8b\uff1a<\/p>\n<p>\u9996\u5148\u6709\u4e00\u4e2a\u63a5\u53e3UserService\u548c\u4e24\u4e2a\u5b9e\u73b0\u7c7bUserServiceImpl1\u548cUserServiceImpl2\uff0c\u5e76\u4e14\u8fd9\u4e24\u4e2a\u5b9e\u73b0\u7c7b\u5df2\u7ecf\u52a0\u5165\u5230Spring\u7684IOC\u5bb9\u5668\u4e2d\u4e86<\/p>\n<p>@Service<\/p>\n<p>public class UserServiceImpl1 implements UserService<\/p>\n<p>@Service<\/p>\n<p>public class UserServiceImpl2 implements UserService<\/p>\n<p>1\u901a\u8fc7@Autowired\u6ce8\u5165\u4f7f\u7528<\/p>\n<p>@Autowired<\/p>\n<p>private UserService userService;<\/p>\n<p>\u6839\u636e\u4e0a\u9762\u7684\u6b65\u9aa4\uff0c\u53ef\u4ee5\u5f88\u5bb9\u6613\u5224\u65ad\u51fa\uff0c\u76f4\u63a5\u8fd9\u4e48\u4f7f\u7528\u662f\u4f1a\u62a5\u9519\u7684<\/p>\n<p>\u539f\u56e0\uff1a\u9996\u5148\u901a\u8fc7byType\u6ce8\u5165\uff0c\u5224\u65adUserService\u7c7b\u578b\u6709\u4e24\u4e2a\u5b9e\u73b0\uff0c\u65e0\u6cd5\u786e\u5b9a\u5177\u4f53\u662f\u54ea\u4e00\u4e2a\uff0c\u4e8e\u662f\u901a\u8fc7byName\u65b9\u5f0f\uff0c\u8fd9\u91cc\u7684\u53d8\u91cf\u540duserService\u4e5f\u65e0\u6cd5\u5339\u914dIOC\u5bb9\u5668\u4e2did\uff08\u6b64\u5904\u6307\u7684userServiceImpl1\u548cuserServiceImpl2\uff09\uff0c\u4e8e\u662f\u62a5\u9519\u3002<\/p>\n<p>\u6ce8\u610f\uff1a\u901a\u8fc7\u6ce8\u89e3\u6ce8\u5165\u5230IOC\u5bb9\u5668\u7684id\u503c\u9ed8\u8ba4\u662f\u5176\u7c7b\u540d\u9996\u5b57\u6bcd\u5c0f\u5199<\/p>\n","protected":false},"excerpt":{"rendered":"@Autowired\u6ce8\u89e3\u662fSpring\u63d0\u4f9b\u7684\uff0c\u800c@Resource\u6ce8\u89e3\u662fJ2EE\u672c\u8eab\u63d0\u4f9b\u7684\uff1b@Autowird 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