{"id":31378,"date":"2023-08-04T06:28:49","date_gmt":"2023-09-09T03:30:09","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%83%b3%e8%a6%81%e5%9c%a8java%e4%b8%ad%e7%90%86%e8%a7%a3di%e3%80%82\/"},"modified":"2025-08-12T23:44:10","modified_gmt":"2025-08-12T15:44:10","slug":"%e6%83%b3%e8%a6%81%e5%9c%a8java%e4%b8%ad%e7%90%86%e8%a7%a3di%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%83%b3%e8%a6%81%e5%9c%a8java%e4%b8%ad%e7%90%86%e8%a7%a3di%e3%80%82\/","title":{"rendered":"\u60f3\u8981\u5728Java\u4e2d\u7406\u89e3DI"},"content":{"rendered":"<h1>\u6982\u8981\u6458\u8981<\/h1>\n<p>\u6211\u5b8c\u5168\u7406\u89e3\u4e86Java\u4e2d\u7684\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u6982\u5ff5\uff0c\u56e0\u6b64\u6211\u5c06\u5176\u8bb0\u8ff0\u4e3a\u5907\u5fd8\u5f55\u5f0f\u7684\u6587\u7ae0\u3002\u7531\u4e8e\u5145\u5206\u5229\u7528\u4e86ChatGPT\u7684\u8f85\u52a9\uff0c\u53ef\u80fd\u4f1a\u6709\u4e9b\u65e5\u8bed\u8868\u8fbe\u6bd4\u8f83\u751f\u786c\uff0c\u8bf7\u4e0d\u8981\u4ecb\u610f\u3002<\/p>\n<h2>\u4f9d\u8d56\u6ce8\u5165\u662f\u6307\u4e00\u79cd\u65b9\u6cd5\u3002<\/h2>\n<p>\u4f9d\u8d56\u6ce8\u5165\uff08Dependency 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none;\">\n<ol>\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u7684\u63d0\u5347\uff1a\u901a\u8fc7\u4fdd\u6301\u4ee3\u7801\u4e4b\u95f4\u7684\u6e05\u6670\u5173\u7cfb\uff0c\u6bcf\u4e2a\u7c7b\u7684\u89d2\u8272\u548c\u8d23\u4efb\u53d8\u5f97\u660e\u786e\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>\u53ef\u91cd\u7528\u6027\u7684\u63d0\u5347\uff1a\u7c7b\u4e0e\u7279\u5b9a\u5b9e\u73b0\u65e0\u5bc6\u96c6\u8026\u5408\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u4ea4\u6362\u4e0d\u540c\u7684\u5b9e\u73b0\u3002<\/p>\n<p>\u6d4b\u8bd5\u6613\u7528\u6027\uff1a\u5728\u6d4b\u8bd5\u65f6\uff0c\u66f4\u5bb9\u6613\u5c06\u751f\u4ea7\u73af\u5883\u7684\u4f9d\u8d56\u5bf9\u8c61\u66ff\u6362\u4e3a\u6a21\u62df\u6216\u5b58\u6839\u3002<\/p>\n<h3>\u7f3a\u70b9<\/h3>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u53ef\u80fd\u4f1a\u611f\u5230\u590d\u6742\uff1a\u5bf9\u4e8e\u521d\u5b66\u4f9d\u8d56\u6ce8\u5165\u7684\u7a0b\u5e8f\u5458\u6765\u8bf4\uff0c\u53ef\u80fd\u4f1a\u89c9\u5f97\u590d\u6742\uff0c\u6bd4\u5982\u5bf9DI\u5bb9\u5668\u7684\u8bbe\u7f6e\u548c\u63a5\u53e3\u7684\u7ba1\u7406\u7b49\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>\u8fd0\u884c\u65f6\u9519\u8bef\uff1a\u7531\u4e8e\u4f9d\u8d56\u5173\u7cfb\u6ca1\u6709\u5728\u4ee3\u7801\u4e2d\u76f4\u63a5\u58f0\u660e\uff0c\u56e0\u6b64\u5728\u8fd0\u884c\u65f6\u800c\u4e0d\u662f\u7f16\u8bd1\u65f6\u53ef\u80fd\u4f1a\u53d1\u73b0\u5b58\u5728\u4f9d\u8d56\u5173\u7cfb\u95ee\u9898\u3002<\/p>\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u4f9d\u8d56\u6ce8\u5165\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u63d0\u9ad8\u8f6f\u4ef6\u8bbe\u8ba1\u7684\u7075\u6d3b\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\uff0c\u4f46\u5728\u5f15\u5165\u548c\u7ba1\u7406\u65b9\u9762\u9700\u8981\u6ce8\u610f\u548c\u7406\u89e3\u3002<\/p>\n<p>\u4f9d\u5b58\u6027\u6ce8\u5165\uff08DI\uff09\u662f\u4e00\u4e2a\u7a0d\u5fae\u9ad8\u7ea7\u7684\u6982\u5ff5\uff0c\u4f46\u6211\u4f1a\u4e00\u6b65\u4e00\u6b65\u5730\u5206\u89e3\u89e3\u91ca\uff0c\u4ee5\u4fbfJava\u521d\u5b66\u8005\u4e5f\u80fd\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<h3>\u4ec0\u4e48\u662f\u4f9d\u8d56\u6027\uff1f<\/h3>\n<p>\u9996\u5148\uff0c\u5f53\u7c7bA\u4f7f\u7528\u7c7bB\u7684\u65b9\u6cd5\u65f6\uff0c\u6211\u4eec\u8bf4\u7c7bA\u201c\u4f9d\u8d56\u4e8e\u201d\u7c7bB\u3002\u5f53\u4f9d\u8d56\u5173\u7cfb\u589e\u591a\u65f6\uff0c\u4ee3\u7801\u7684\u4fee\u6539\u53d8\u5f97\u56f0\u96be\uff0c\u6d4b\u8bd5\u53d8\u5f97\u66f4\u52a0\u56f0\u96be\u3002<\/p>\n<h3>\u4f9d\u8d56\u6ce8\u5165\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u4f9d\u8d56\u6ce8\u5165\u662f\u4e00\u79cd\u5728\u7c7b\u4e4b\u95f4\u6ce8\u5165\u4f9d\u8d56\u5173\u7cfb\u7684\u6280\u672f\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u7c7bA\u4f9d\u8d56\u4e8e\u7c7bB\uff0c\u90a3\u4e48\u5728\u7c7bA\u5185\u90e8\u4e0d\u76f4\u63a5\u521b\u5efa\u7c7bB\u7684\u5b9e\u4f8b\uff0c\u800c\u662f\u5c06\u7c7bB\u7684\u5b9e\u4f8b\u4ece\u5916\u90e8\u4f20\u9012\u7ed9\u7c7bA\u3002<\/p>\n<h3>\u4e3a\u4ec0\u4e48\u9700\u8981\u4f9d\u8d56\u6ce8\u5165\uff1f<\/h3>\n<p>\u5982\u679c\u6ca1\u6709\u4f9d\u5b58\u6027\u6ce8\u5165\uff0c\u7c7bA\u76f4\u63a5\u751f\u6210\u7c7bB\u5e76\u4f7f\u7528\uff0c\u5219\u7c7bA\u548c\u7c7bB\u4e4b\u95f4\u5c06\u4ea7\u751f\u5f3a\u70c8\u7684\u5173\u8054\u3002\u8fd9\u610f\u5473\u7740\u66f4\u6539\u7c7bB\u53ef\u80fd\u4f1a\u5f71\u54cd\u5230\u7c7bA\u3002\u5728\u6d4b\u8bd5\u65f6\uff0c\u66ff\u6362\u7c7bB\u4e3a\u53e6\u4e00\u4e2a\u7c7b\u4e5f\u4f1a\u53d8\u5f97\u56f0\u96be\u3002<\/p>\n<p>\u4f7f\u7528\u4f9d\u8d56\u6ce8\u5165\u65f6\uff0cA\u7c7b\u4e0d\u4f1a\u76f4\u63a5\u4f9d\u8d56\u4e8eB\u7c7b\uff0c\u800c\u662f\u4f9d\u8d56\u4e8eB\u7c7b\u7684\u67d0\u79cd\u63a5\u53e3\u3002\u8fd9\u5c06\u63d0\u9ad8\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002<\/p>\n<h2>\u5b9e\u65bd\u65b9\u5f0f<\/h2>\n<h3>\u4f8b\uff1a\u5546\u5e97\u4e0e\u4ea7\u54c1<\/h3>\n<p>A\u7c7b\u73ed\u7ea7\u8ba4\u4e3a\u300c\u5e97\u94fa\u300d\uff0c\u800cB\u7c7b\u73ed\u7ea7\u8ba4\u4e3a\u300c\u4ea7\u54c1\u300d\u3002<\/p>\n<p>\u4f9d\u5b58\u6027\u6ce8\u5165\u306a\u3057: \u304a\u5e97\u304c\u88fd\u54c1\u3092\u76f4\u63a5\u4f5c\u3063\u3066\u8ca9\u58f2\u3057\u307e\u3059\u3002\u88fd\u54c1\u304c\u5909\u308f\u308b\u3068\u304a\u5e97\u3082\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f9d\u5b58\u6027\u6ce8\u5165\u3042\u308a: \u304a\u5e97\u306f\u88fd\u54c1\u3092\u5916\u90e8\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u304b\u3089\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u88fd\u54c1\u304c\u5909\u308f\u3063\u3066\u3082\u304a\u5e97\u306f\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u3002\u5225\u306e\u88fd\u54c1\u306b\u5909\u66f4\u3059\u308b\u306e\u3082\u7c21\u5358\u3067\u3059\u3002<\/p>\n<h3>\u5982\u679c\u4e0d\u4f7f\u7528DI<\/h3>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ Shop\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30af\u30e9\u30b9\u306f\u88fd\u54c1\u3092\u76f4\u63a5\u6301\u3063\u3066\u3044\u308b\u69cb\u9020\u3067\u3059\u3002<\/span>\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">Shop<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"c1\">\/\/ Product\u578b\u306eproduct\u5909\u6570\u3092\u5b9a\u7fa9\u3057\u3001\u65b0\u3057\u3044Product\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u76f4\u63a5\u751f\u6210\u3057\u3066\u4ee3\u5165\u3057\u3066\u3044\u307e\u3059\u3002<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">Product<\/span> <span class=\"n\">product<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Product<\/span><span class=\"o\">();<\/span>\r\n\r\n  <span class=\"c1\">\/\/ \u88fd\u54c1\u3092\u8ca9\u58f2\u3059\u308b\u305f\u3081\u306epublic\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u5916\u90e8\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">sell<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/ product\u5909\u6570\u306b\u683c\u7d0d\u3055\u308c\u305fProduct\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306edisplayInfo\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u88fd\u54c1\u306e\u60c5\u5831\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span>\r\n    <span class=\"n\">product<\/span><span class=\"o\">.<\/span><span class=\"na\">displayInfo<\/span><span class=\"o\">();<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u5f53\u4f7f\u7528 DI<\/h3>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ ShopWithDI\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30af\u30e9\u30b9\u306f\u88fd\u54c1\u3092\u5916\u90e8\u304b\u3089\u53d7\u3051\u53d6\u308b\u69cb\u9020\u3067\u3059\u3002<\/span>\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">ShopWithDI<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"c1\">\/\/ Product\u578b\u306eproduct\u5909\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u3053\u3067\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u5916\u90e8\u304b\u3089\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">Product<\/span> <span class=\"n\">product<\/span><span class=\"o\">;<\/span>\r\n\r\n  <span class=\"c1\">\/\/ \u3053\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u3001ShopWithDI\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u969b\u306b\u3001\u5916\u90e8\u304b\u3089Product\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"nf\">ShopWithDI<\/span><span class=\"o\">(<\/span><span class=\"nc\">Product<\/span> <span class=\"n\">product<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/ \u53d7\u3051\u53d6\u3063\u305fProduct\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u3001\u3053\u306e\u30af\u30e9\u30b9\u306eproduct\u5909\u6570\u306b\u4ee3\u5165\u3057\u3066\u3044\u307e\u3059\u3002<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"o\">.<\/span><span class=\"na\">product<\/span> <span class=\"o\">=<\/span> <span class=\"n\">product<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"c1\">\/\/ \u88fd\u54c1\u3092\u8ca9\u58f2\u3059\u308b\u305f\u3081\u306epublic\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u5916\u90e8\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">sell<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/ product\u5909\u6570\u306b\u683c\u7d0d\u3055\u308c\u305fProduct\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306edisplayInfo\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u88fd\u54c1\u306e\u60c5\u5831\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/span>\r\n    <span class=\"n\">product<\/span><span class=\"o\">.<\/span><span class=\"na\">displayInfo<\/span><span class=\"o\">();<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u5728DI\u4e2d\u7684\u8303\u56f4\u7c7b\u578b<\/h2>\n<p>\u5728\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u4e2d\uff0c\u4f5c\u7528\u57df\u7528\u4e8e\u7ba1\u7406\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u3002\u4e00\u822c\u7684\u4f5c\u7528\u57df\u7c7b\u578b\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<ol>\n<li style=\"list-style-type: 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