{"id":44082,"date":"2022-11-09T16:48:04","date_gmt":"2023-10-29T20:06:14","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/golang-%e5%9c%a8-golang-%e7%9a%84%e8%ae%be%e8%ae%a1%e4%b8%ad%e9%9c%80%e8%a6%81%e6%b3%a8%e6%84%8f%e7%9a%84%e4%ba%8b%e9%a1%b9\/"},"modified":"2024-04-28T23:51:58","modified_gmt":"2024-04-28T15:51:58","slug":"golang-%e5%9c%a8-golang-%e7%9a%84%e8%ae%be%e8%ae%a1%e4%b8%ad%e9%9c%80%e8%a6%81%e6%b3%a8%e6%84%8f%e7%9a%84%e4%ba%8b%e9%a1%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/golang-%e5%9c%a8-golang-%e7%9a%84%e8%ae%be%e8%ae%a1%e4%b8%ad%e9%9c%80%e8%a6%81%e6%b3%a8%e6%84%8f%e7%9a%84%e4%ba%8b%e9%a1%b9\/","title":{"rendered":"[Golang] \u5728 Golang \u7684\u8bbe\u8ba1\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879"},"content":{"rendered":"<p>\u6211\u5728\u8bbe\u8ba1Golang\u65f6\u4e2a\u4eba\u7684\u6ce8\u610f\u4e8b\u9879\u8bb0\u5728\u4e0b\u9762\u3002<\/p>\n<p>\u76ee\u6807\u662f\u8f83\u5927\u89c4\u6a21\u7684Web\u5e94\u7528\u7a0b\u5e8f\u3002\u5982\u679c\u662f\u5c0f\u578b\u5de5\u5177\u53ef\u80fd\u4f1a\u6709\u6240\u5dee\u5f02\u3002<br \/>\n\u6b22\u8fce\u63d0\u4f9b\u5176\u4ed6\u7c7b\u4f3c\u4e8e\u201c\u6211\u6ce8\u610f\u5230\u8fd9\u4e00\u70b9\uff01\u201d\u7684\u4fe1\u606f\uff01<\/p>\n<p>\u8bf4\u5230Golang\u7684\u8bbe\u8ba1\u539f\u5219\uff0c\u6211\u89c9\u5f97Clean Architecture\u72ec\u6811\u4e00\u5e1c\uff0c\u4f46\u5374\u6ca1\u6709\u660e\u786e\u7684\u6307\u5bfc\u65b9\u9488\u3002\u4e2a\u4eba\u89c9\u5f97\u5982\u679c\u6709\u66f4\u591a\u7c7b\u4f3c\u7684\u6307\u5bfc\u539f\u5219\u5c31\u597d\u4e86\u3002<\/p>\n<h1>\u69cb\u9020\u65b9\u9762\u7684\u4e1c\u897f de<\/h1>\n<h2>1-1. \u6e05\u6d01\u67b6\u6784<\/h2>\n<p>\u5f53\u7136\uff0c\u8fd9\u662fGolang\u7684\u6807\u51c6\u914d\u7f6e\u6307\u5357\u3002\u5b83\u6db5\u76d6\u4e86\u5305\u7ed3\u6784\u3001\u63a5\u53e3\u4f7f\u7528\u65b9\u6cd5\u3001\u5305\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\u7b49\u5fc5\u8981\u5185\u5bb9\u3002<\/p>\n<h2>1-2. \u4f9d\u8d56\u4e8e\u63a5\u53e3<\/h2>\n<p>\u5728Golang\u6a21\u5757\u4e4b\u95f4\u7684\u5f15\u7528\u4e2d\uff0c\u52a1\u5fc5\u4f7f\u7528\u63a5\u53e3\u3002\u8fd9\u4e0d\u4ec5\u662fClean Architecture\u7684\u5fc5\u8981\u6761\u4ef6\uff0c\u800c\u4e14\u8fd8\u4f1a\u5bfc\u81f4\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\u65e0\u6cd5\u66ff\u6362\u6a21\u62df\u5bf9\u8c61\uff01<\/p>\n<h2>1-3. DI<\/h2>\n<p>\u8ba9\u6211\u4eec\u786e\u4fdd\u5728\u6a21\u5757\u7684\u6784\u9020\u51fd\u6570\u4e2d\u4f20\u9012\u6a21\u5757\u95f4\u7684\u5f15\u7528\u3002<br \/>\n\u7136\u540e\uff0c\u5728main.go\uff08\u6216\u8005\u8bf4\u903b\u8f91\u7684\u5916\u90e8\uff09\u4e2d\u6ce8\u5165\u4f9d\u8d56\u6027\u3002<\/p>\n<h2>1-4. \u51fd\u6570\u3001\u95ed\u5305\u3001\u6a21\u5757\u662f\u4e09\u79cd\u53ef\u80fd\u7684\u9009\u9879\u3002<\/h2>\n<p>\u5148\u8003\u8651\u51fd\u6570\uff0c\u7136\u540e\u8003\u8651\u95ed\u5305\u3002<br \/>\n\u4e0e\u4f7f\u7528\u63a5\u53e3\u7684\u6a21\u5757\u4f9d\u8d56\u6ce8\u5165\u76f8\u6bd4\uff0c\u4f7f\u7528\u51fd\u6570\u7c7b\u578b\u7684\u4f9d\u8d56\u6ce8\u5165\u66f4\u7b80\u5355\u3002<\/p>\n<p>\u5982\u679c\u9700\u8981\u5728\u67d0\u4e2a\u65b9\u6cd5\u4e4b\u5916\u6301\u7eed\u4fdd\u6301\u72b6\u6001\uff0c\u5e76\u4e14\u6709\u4e00\u7ec4\u65b9\u6cd5\u96c6\u5408\u7684\u8bdd\uff0c\u8bf7\u4f7f\u7528\u6a21\u5757\uff08\u7ed3\u6784\u4f53\uff09\u3002<\/p>\n<h2>1-5. \u907f\u514d\u5305\u88f9\u4e4b\u95f4\u7684\u53cc\u5411\u4f9d\u8d56\u5173\u7cfb<\/h2>\n<p>\u70ba\u4e86\u907f\u514d\u5faa\u74b0\u5f15\u7528\u554f\u984c\uff0c\u9664\u4e86\u63a1\u7528\u4e7e\u6de8\u7684\u67b6\u69cb\uff0c\u6211\u5011\u9700\u8981\u4e8b\u5148\u5b9a\u7fa9\u4f9d\u8cf4\u65b9\u5411\uff0c\u78ba\u4fdd\u5305\u4e4b\u9593\u7684\u4f9d\u8cf4\u95dc\u4fc2\u662f\u55ae\u5411\u7684\u3002<\/p>\n<h2>1-6. \u73af\u5883\u4f9d\u8d56<\/h2>\n<p>\u6211\u8ba4\u4e3a\u5728\u672c\u5730\u73af\u5883\u3001\u5f00\u53d1\u73af\u5883\u3001\u9636\u6bb5\u73af\u5883\u548c\u751f\u4ea7\u73af\u5883\u7b49\u5404\u79cd\u73af\u5883\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u6839\u636e\u73af\u5883\u8fdb\u884c\u4e0d\u540c\u7684\u64cd\u4f5c\u3002\u57fa\u672c\u4e0a\uff0c\u6211\u4eec\u4f1a\u6839\u636e\u73af\u5883\u53d8\u91cf\u6765\u6539\u53d8\u884c\u4e3a\uff0c\u4f46\u5982\u679c\u4e0d\u60f3\u8fd9\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6784\u5efa\u6807\u7b7e\u6765\u5207\u6362\u4ee3\u7801\u3002<\/p>\n<h1>2. \u6a21\u5757\u8bbe\u8ba1<\/h1>\n<h2>2-1. \u754c\u9762<\/h2>\n<p>\u5728\u63a5\u53e3\u4e2d\u5b9a\u4e49\u7684\u503c\uff08\u4f8b\u5982\u679a\u4e3e\u5b9a\u4e49\u548c\u51fd\u6570\u9009\u9879\u7b49\uff09\uff0c\u52a1\u5fc5\u5199\u5728\u63a5\u53e3\u7684\u4e00\u4fa7\u3002\u5982\u679c\u5199\u5728\u5b9e\u73b0\u4e00\u4fa7\u4f1a\u5bfc\u81f4\u5faa\u73af\u5bfc\u5165\u95ee\u9898\uff01<\/p>\n<blockquote><p>\u8bf7\u4e0d\u8981\u5fd8\u8bb0\uff0c\u63a5\u53e3\u662f\u201c\u4f7f\u7528\u65b9\u7684\u4e1c\u897f\u201d\uff0c\u800c\u4e0d\u662f\u5b9e\u73b0\u65b9\u7684\u4e1c\u897f\uff01<\/p><\/blockquote>\n<h2>2-2. \u9ed8\u8ba4\u503c (default value)<\/h2>\n<p>\u5728Golang\u4e2d\uff0c\u4e0d\u5b58\u5728null\u8fd9\u6837\u7684\u6982\u5ff5\uff0c\u800c\u662f\u5c06&#8221;&#8221;\uff08\u7a7a\u5b57\u7b26\u4e32\uff09\u548c0\u89c6\u4e3anull\u3002\u56e0\u6b64\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u5904\u7406\u9ed8\u8ba4\u503c\u7684\u56f0\u6270\u3002<br \/>\n\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Functional Option\uff08\u51fd\u6570\u9009\u9879\uff09\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<h2>2-3. \u7ee7\u627f\u4e0e\u9762\u5411\u5bf9\u8c61<\/h2>\n<p>\u867d\u7136\u6709\u4eba\u8bf4Golang\u4e0d\u662f\u9762\u5411\u5bf9\u8c61\u7684\u8bed\u8a00\uff0c\u4f46\u901a\u8fc7\u5d4c\u5165\u7c7b\u578b\uff0c\u53ef\u4ee5\u5b9e\u73b0\u7ee7\u627f\u3002<\/p>\n<blockquote><p>\u53ea\u662f\u4e0d\u7ee7\u627f\u7c7b\u578b\uff0c\u529f\u80fd\u5c06\u4f1a\u88ab\u7ee7\u627f\u3002<\/p><\/blockquote>\n<p>\u5f53\u8fdb\u884c\u6b64\u64cd\u4f5c\u65f6\uff0c\u4f1a\u4ea7\u751f\u4e0e\u901a\u5e38\u7ee7\u627f\u4e2d\u53cd\u6a21\u5f0f\u6240\u63d0\u5230\u7684\u76f8\u540c\u98ce\u9669\u3002\u8bf7\u52a1\u5fc5\u8c28\u614e\u5904\u7406\u5d4c\u5165\u5f0f\u7684\u5904\u7406\u3002<\/p>\n<p>\u5982\u679c\u4e0d\u4e86\u89e3\u9762\u5411\u5bf9\u8c61\uff0c\u5c31\u4e0d\u5e94\u8be5\u4f7f\u7528\u5d4c\u5165\u5f0f\u7c7b\u578b\u3002<\/p>\n<h2>2-4. \u5c06\u5176\u6210\u4e3a\u4e00\u4e2a\u51fd\u6570<\/h2>\n<p>\u6211\u8ba4\u4e3a\uff0cGolang\u662f\u4e00\u79cd\u975e\u5e38\u4fbf\u4e8e\u5904\u7406\u51fd\u6570\u4f5c\u4e3a\u503c\u7684\u8bed\u8a00\u3002\u8bf7\u79ef\u6781\u5730\u58f0\u660e\u51fd\u6570\u63a5\u53e3\u7c7b\u578b\uff01<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">OptionalFunction<\/span> <span class=\"k\">func<\/span><span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">Option<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">(<\/span><span class=\"n\">a<\/span> <span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">options<\/span> <span class=\"o\">...<\/span><span class=\"n\">OptionalFunction<\/span><span class=\"p\">)<\/span> <span class=\"n\">err<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>2-5. \u679a\u4e3e<\/h2>\n<p>\u5728Golang\u4e2d\uff0c\u6ca1\u6709\u5728\u8bed\u8a00\u7ea7\u522b\u4e0a\u63d0\u4f9b\u5b89\u5168\u7684\u679a\u4e3e\u9009\u9879\u3002<br \/>\n\u867d\u7136\u4e0d\u80fd\u521b\u5efaenum\u7c7b\uff0c\u4f46\u6211\u8ba4\u4e3a\u53ef\u4ee5\u521b\u5efa\u7c7b\u578b\u522b\u540d\u5e76\u4f7f\u7528const\u8fdb\u884c\u5b9a\u4e49\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">ErrorLevel<\/span> <span class=\"kt\">int<\/span>\r\n<span class=\"k\">const<\/span> <span class=\"p\">(<\/span>\r\n   <span class=\"n\">Critical<\/span> <span class=\"n\">ErrorLevel<\/span> <span class=\"o\">=<\/span> <span class=\"m\">0<\/span>\r\n   <span class=\"n\">Error<\/span> <span class=\"n\">ErrorLevel<\/span> <span class=\"o\">=<\/span> <span class=\"m\">1<\/span>\r\n   <span class=\"n\">Warning<\/span> <span class=\"n\">ErrorLevel<\/span> <span class=\"o\">=<\/span> <span class=\"m\">2<\/span>\r\n   <span class=\"n\">Info<\/span> <span class=\"n\">ErrorLevel<\/span> <span class=\"o\">=<\/span> <span class=\"m\">3<\/span>   \r\n<span class=\"p\">)<\/span>\r\n<span class=\"c\">\/\/ \u500b\u4eba\u7684\u306b\u306f\u3042\u307e\u308aiota\u304c\u597d\u304d\u3058\u3083\u306a\u3044\u3002\u3079\u305f\u66f8\u304d\u3057\u305f\u3044\u3002<\/span>\r\n<\/code><\/pre>\n<p>\u7531\u65bc\u5275\u5efa\u672a\u5b9a\u7fa9\u7684const\u503c\u5f88\u5bb9\u6613\uff0c\u6240\u4ee5\u8acb\u52d9\u5fc5\u64b0\u5beb\u4f8b\u5916\u8655\u7406\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">switch<\/span> <span class=\"p\">(<\/span><span class=\"n\">level<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n   <span class=\"k\">case<\/span> <span class=\"n\">Critical<\/span><span class=\"o\">:<\/span>\r\n      <span class=\"c\">\/\/pass<\/span>\r\n   <span class=\"k\">case<\/span> <span class=\"n\">Error<\/span><span class=\"o\">:<\/span>\r\n      <span class=\"c\">\/\/pass<\/span>\r\n   <span class=\"k\">default<\/span><span class=\"o\">:<\/span>\r\n      <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">errors<\/span><span class=\"o\">.<\/span><span class=\"n\">New<\/span><span class=\"p\">(<\/span><span class=\"s\">\"illegal error level\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>2-6. Type safety (\u7c7b\u578b\u5b89\u5168\u6027)<\/h2>\n<p>Golang\u662f\u4e00\u79cd\u7c7b\u578b\u5b89\u5168\u7684\u8bed\u8a00\u3002\u6211\u4eec\u5e94\u8be5\u8bbe\u8ba1\u5e76\u5229\u7528\u7c7b\u578b\u5b89\u5168\u6027\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u9664\u975e\u975e\u5e38\u9700\u8981\uff0c\u5426\u5219\u5c3d\u91cf\u907f\u514d\u4e0b\u884c\u8f6c\u578b\u3002<\/p>\n<h2>2-7. \u63a5\u53e3{}\u7c7b\u578b<\/h2>\n<p>\u6d3b\u7528interface{}\u7c7b\u578b\u4e5f\u5f88\u91cd\u8981\uff0c\u867d\u7136\u8fd9\u4f3c\u4e4e\u8bf4\u7684\u662f\u4e0e\u7c7b\u578b\u5b89\u5168\u76f8\u53cd\u7684\u4e8b\u60c5\u3002\u5728\u53ef\u4ee5\u5fd8\u8bb0\u7c7b\u578b\u7684\u65f6\u5019\uff0c\u8981\u79ef\u6781\u5730\u53bb\u5fd8\u8bb0\u5b83\u3002<\/p>\n<p>\u9057\u5fd8\u7684\u65f6\u5019\u662f\u300c\u5373\u4f7f\u5fd8\u8bb0\u4e5f\u65e0\u9700\u56de\u60f3\u8d77\u6765\u7684\u65f6\u5019\u300d\u3002<\/p>\n<h2>2-8. \u4e0a\u4e0b\u6587<\/h2>\n<p>\u5728\u8bbe\u8ba1Golang\u65f6\uff0c\u5904\u7406\u4e0a\u4e0b\u6587\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">context\u306b\u4ed8\u4e0e\u3059\u308bvalue\u306f\u3001context\u3068\u751f\u5b58\u671f\u9593\u304c\u4e00\u81f4\u3059\u308b\u30e2\u30ce\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">context\u306f\u3001\u6642\u9593\u7684\u306a\u7bc4\u56f2\u3092\u8868\u3057\u307e\u3059\u3002struct\u306e\u5c5e\u6027\u306b\u3059\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5fc5\u305a\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c\u4e00\u5f15\u6570\u3067\u53d7\u3051\u6e21\u3057\u307e\u3057\u3087\u3046\u3002<\/ul>\n<h1>3. \u7f16\u7801<\/h1>\n<h2>3-1. \u53d8\u91cf<\/h2>\n<h3>\u7b80\u5316\u53d8\u91cf<\/h3>\n<p>\u4e0d\u5fc5\u8981\u7684\u53d8\u91cf\u4e0d\u8981\u58f0\u660e\u3002\u5c3d\u91cf\u51cf\u5c11\u4f7f\u7528\u53d8\u91cf\u3002<\/p>\n<h3>\u5c06\u5176\u8bbe\u4e3aconst<\/h3>\n<p>\u5728Golang\u4e2d\u5e76\u6ca1\u6709\u50cfJavaScript\u90a3\u6837\u7684const\/let\uff0c\u4f46\u6211\u4eec\u5e94\u5c3d\u53ef\u80fd\u5730\u907f\u514d\u4f7f\u7528\u7c7b\u4f3clet\u7684\u53d8\u91cf\uff0c\u800c\u662f\u5c06\u53d8\u91cf\u4f5c\u4e3aconst\u5904\u7406\u3002<\/p>\n<h2>\u4e0d\u8981\u5c06\u4ec5\u7528\u4e8e\u6d4b\u8bd5\u7684\u4ee3\u7801\u6df7\u5165\u751f\u4ea7\u4ee3\u7801\u4e2d\u3002<\/h2>\n<p>\u8bf7\u4e0d\u8981\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528if\u8bed\u53e5\u6765\u5207\u6362\u65e0\u5173\u7684production\u4ee3\u7801\u3002<br \/>\n\u8bf7\u786e\u4fdd\u80fd\u8fdb\u884cDI\uff0c\u5e76\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u6216\u8005\u6784\u5efa\u6807\u7b7e\u8fdb\u884c\u5207\u6362\u3002<\/p>\n<h2>\u7528\u660e\u786e\u7684\u65b9\u5f0f\u5199\u4e0b\u6765<\/h2>\n<pre class=\"post-pre\"><code><span class=\"k\">if<\/span> <span class=\"nb\">len<\/span><span class=\"p\">(<\/span><span class=\"nb\">str<\/span><span class=\"p\">(<\/span><span class=\"n\">arg<\/span><span class=\"p\">))<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">0<\/span><span class=\"p\">:<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u662f\u4e00\u4e2aPython\u7684\u4f8b\u5b50\uff0c\u4f60\u4e00\u773c\u5c31\u80fd\u770b\u51fa\u5b83\u662f\u5728\u505a\u4ec0\u4e48\u5417\uff1f<\/p>\n<p>\u7f16\u7a0b\u662f\u4e00\u79cd\u8868\u8fbe\u610f\u56fe\u7684\u6587\u5b57\u5f62\u5f0f\u3002<br \/>\n\u6211\u4eec\u5e94\u8be5\u7f16\u5199\u76f4\u63a5\u548c\u660e\u786e\u5730\u8868\u8fbe\u51fa\u6211\u4eec\u60f3\u505a\u7684\u4e8b\u60c5\u7684\u4ee3\u7801\u3002<br \/>\n\u5982\u679c\u4ee3\u7801\u4e0d\u660e\u786e\uff0c\u8bfb\u8005\u5c06\u9700\u8981\u82b1\u8d39\u989d\u5916\u65f6\u95f4\u6765\u7406\u89e3\u60f3\u8981\u5b9e\u73b0\u7684\u76ee\u6807\uff0c\u5e76\u4e14\u53ef\u80fd\u4f1a\u5f15\u5165\u9519\u8bef\u3002<\/p>\n<h2>3-4. \u4e0d\u8981\u8fdb\u884c\u534a\u9014\u800c\u5e9f\u7684\u62bd\u8c61\u5316\u5904\u7406<\/h2>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"n\">doSomething<\/span><span class=\"p\">(<\/span><span class=\"n\">arg<\/span> <span class=\"kt\">string<\/span><span class=\"p\">)<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">arg<\/span> <span class=\"o\">==<\/span> <span class=\"s\">\"a\"<\/span> <span class=\"p\">{<\/span>\r\n       <span class=\"c\">\/\/ doSomething_a<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">arg<\/span> <span class=\"o\">==<\/span> <span class=\"s\">\"b\"<\/span> <span class=\"p\">{<\/span>\r\n       <span class=\"c\">\/\/ doSomething_b<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">arg<\/span> <span class=\"o\">==<\/span> <span class=\"s\">\"c\"<\/span> <span class=\"p\">{<\/span>\r\n       <span class=\"c\">\/\/ doSomething_c<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">arg<\/span> <span class=\"o\">==<\/span> <span class=\"s\">\"a\"<\/span> <span class=\"p\">{<\/span>\r\n       <span class=\"c\">\/\/ doSomething_a_2nd<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">arg<\/span> <span class=\"o\">==<\/span> <span class=\"s\">\"b\"<\/span> <span class=\"p\">{<\/span>\r\n       <span class=\"c\">\/\/ doSomething_b_2nd<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">arg<\/span> <span class=\"o\">==<\/span> <span class=\"s\">\"c\"<\/span> <span class=\"p\">{<\/span>\r\n       <span class=\"c\">\/\/ doSomething_c_2nd<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u5076\u5c14\u4f1a\u770b\u5230\u8fd9\u6837\u7684\u51fd\u6570\u3002\u4e3a\u4ec0\u4e48\u5462\uff1f<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"n\">doSomething_a<\/span><span class=\"p\">()<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n   <span class=\"c\">\/\/ doSomething_a<\/span>\r\n   <span class=\"c\">\/\/ doSomething_a_2nd<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">doSomething_b<\/span><span class=\"p\">()<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n   <span class=\"c\">\/\/ doSomething_b<\/span>\r\n   <span class=\"c\">\/\/ doSomething_b_2nd<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"n\">doSomething_c<\/span><span class=\"p\">()<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n   <span class=\"c\">\/\/ doSomething_c<\/span>\r\n   <span class=\"c\">\/\/ doSomething_c_2nd<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4e0d\u8fd9\u6837\u5417\uff1f<br \/>\n\u6211\u7406\u89e3doSomething\u8fd9\u4e2a\u51fd\u6570\u60f3\u8981\u62bd\u8c61\u5316a\/b\/c\u3002\u7136\u800c\uff0c\u51fd\u6570\u5185\u90e8\u7684\u5904\u7406\u5b8c\u5168\u6ca1\u6709\u62bd\u8c61\u5316\u3002<br \/>\n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5e94\u8be5\u5c06\u51fd\u6570\u5207\u5272\u4e3a\u53ea\u6d89\u53ca\u53ef\u4ee5\u4e0d\u4f7f\u7528if\u8bed\u53e5\u7f16\u5199\u7684\u90e8\u5206\u3002<\/p>\n<p>\u6211\u8ba4\u4e3a\u4ee3\u7801\u4e2d\u5b58\u5728\u5f88\u591aif\u8bed\u53e5\u662f\u201c\u4e0d\u5b8c\u5168\u7684\u62bd\u8c61\u5316\u201d\u75c5\u7684\u75c7\u72b6\u3002<\/p>\n<h2>3-5. \u6536\u85cf<\/h2>\n<h3>\u6ca1\u6709set<\/h3>\n<p>Golang\u4e2d\u4ec5\u5b58\u5728array\u3001slice\u548cmap\uff0c\u6700\u4ee4\u4eba\u56f0\u6270\u7684\u662fset\u3002<br \/>\n\u5982\u679c\u653e\u5f03set\uff0c\u5fc5\u7136\u4f1a\u906d\u9047\u5d4c\u5957\u5faa\u73af\u7684\u56f0\u5883\u3002<\/p>\n<p>\u5f53\u9700\u8981\u4f7f\u7528\u96c6\u5408(set)\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528map[?]struct{}\u3002\u4f46\u662f\uff0c\u5982\u679c\u5217\u8868\u957f\u5ea6\u8f83\u77ed\uff0c\u5373\u4f7f\u4f7f\u7528\u53cc\u91cd\u5faa\u73af\u4e5f\u4e0d\u4f1a\u592a\u6162\u3002\u6211\u8ba4\u4e3a\u4e5f\u6709\u9009\u62e9\u4e0d\u4f7f\u7528\u96c6\u5408\u7684\u9009\u9879\u3002<\/p>\n<h3>\u4e0d\u8fdb\u884c\u65e0\u7528\u7684\u6269\u5c55<\/h3>\n<p>\u5728\u4f7f\u7528\u6570\u7ec4\u6216\u6620\u5c04\u65f6\uff0c\u8bf7\u4e0d\u8981\u5fd8\u8bb0\u8003\u8651\u5230&#8221;\u5bb9\u91cf&#8221;\u7684\u95ee\u9898\u3002\u5982\u679c\u5ffd\u89c6\u8fd9\u70b9\uff0c\u4f1a\u9891\u7e41\u53d1\u751f\u4e0d\u5fc5\u8981\u7684\u6269\u5c55\u3002\u5982\u679c\u4e8b\u5148\u5df2\u7ecf\u77e5\u9053\u6240\u9700\u5bb9\u91cf\uff0c\u5c31\u5e94\u5f53\u4e8b\u5148\u5206\u914d\u597d\u76f8\u5e94\u7684\u5bb9\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">items<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">([]<\/span><span class=\"kt\">int<\/span><span class=\"p\">,<\/span> <span class=\"m\">0<\/span><span class=\"p\">,<\/span> <span class=\"m\">10<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u4e2a\u65b9\u5f0f\uff0c\u4f60\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5df2\u7ecf\u5206\u914d\u4e86\u5bb9\u91cf\u4e3a10\u7684\u5207\u7247\u3002\u5bf9\u4e8e\u6620\u5c04\uff08map\uff09\u4e5f\u662f\u540c\u6837\u9002\u7528\u7684\u3002<\/p>\n<h2>3-6. \u8ba9\u6211\u4eec\u4f7f\u7528defer<\/h2>\n<p>\u5728Golang\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528defer\u6765\u8868\u8fbe\u7c7b\u4f3c\u4e8ePython\u4e2d\u7684with\u7684\u4e0a\u4e0b\u6587\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">defer<\/span> <span class=\"n\">s<\/span><span class=\"o\">.<\/span><span class=\"n\">Close<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">defer\u304c\u5b9f\u884c\u3055\u308c\u308b\u306e\u306f\u300c\u95a2\u6570\u306e\u7d42\u308f\u308a\u300d\u3060\u3068\u8a00\u3046\u4e8b\u3092\u5fd8\u308c\u305a\u306b\u3002<\/ul>\n<h2>3\u52307\u4e4b\u95f4\u7684json<\/h2>\n<p>\u5b66\u4e60\u5b9e\u73b0MarshalJSON\u548cUnmarshalJSON\u65b9\u6cd5\u662fGolang\u8bbe\u8ba1\u4e2d\u7684\u5fc5\u8981\u4e8b\u9879\u3002<br \/>\n\u7136\u800c\uff0c\u6211\u8ba4\u4e3a\u8fc7\u4e8e\u7ea0\u7ed3\u4e8eMarshalJSON\/UnmarshalJSON\u4e5f\u662f\u4e2a\u95ee\u9898\u3002\u8981\u907f\u514d\u8fc7\u5ea6\u3002<\/p>\n<h3>json\u7684\u8f93\u5165<\/h3>\n<p>\u5904\u7406\u5d4c\u5957\u6df1\u5ea6\u7684Golang\u7684JSON\u975e\u5e38\u56f0\u96be\uff0c\u5982\u679c\u6309\u7167\u666e\u901a\u65b9\u5f0f\u7f16\u5199\u4ee3\u7801\uff0c\u4f1a\u5145\u6ee1\u5f88\u591a\u5411\u4e0b\u8f6c\u6362\u7684\u4ee3\u7801\u3002<\/p>\n<blockquote><p>\u300c\u6211\u5011\u6703\u8aaa\u624b\u8155\u7684\u529b\u91cf\u3002\u300d<\/p><\/blockquote>\n<p>\u6211\u8ba4\u4e3a\u8fd9\u4e2a\u975e\u5e38\u96be\u8bfb\u3002<\/p>\n<p>\u5728Golang\u5185\u90e8\uff0c\u6211\u4eec\u5e94\u8be5\u6ce8\u91cd\u5bf9\u6570\u636e\u7684\u7c7b\u578b\u5b89\u5168\u5904\u7406\uff0c\u5e76\u4e14\u5c06\u5fc5\u8981\u7684\u4fe1\u606f\u5b58\u50a8\u5728\u7ed3\u6784\u4f53\u4e2d\u3002<br \/>\n\u53e6\u5916\uff0c\u5982\u679c\u53ea\u9700\u8981\u6df1\u5c42\u5d4c\u5957\u7684JSON\u7684\u7279\u5b9a\u90e8\u5206\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u7c7b\u4f3cJsonPath\u7684\u6280\u672f\u6765\u5b9e\u73b0\u3002<\/p>\n<h3>\u5c06JSON\u6570\u636e\u8f93\u51fa<\/h3>\n<p>\u5c06struct\u8f6c\u6362\u4e3ajson\u5e76\u4e0d\u56f0\u96be\uff0c\u4f46\u5e76\u4e0d\u8981\u6c42\u8f93\u51fa\u7684json\u4e2d\u5305\u542b\u6240\u6709\u7684struct\u5b9a\u4e49\u3002<br \/>\n\u5982\u679c\u4e0d\u9700\u8981\u4e25\u683c\u7684\u7c7b\u578b\u5b9a\u4e49\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u6a21\u677f\u8f6c\u6362\u6765\u751f\u6210json\u6587\u672c\u3002<\/p>\n<h3>\u514b\u9686\u6216\u590d\u5236<\/h3>\n<p>\u5982\u679c\u9700\u8981\u5728\u76f8\u540c\u7684\u7ed3\u6784\u4f53\u4e4b\u95f4\u8fdb\u884c\u590d\u5236\u6216\u5728\u4e0d\u540c\u7684\u7ed3\u6784\u4f53\u4e4b\u95f4\u8fdb\u884c\u62f7\u8d1d\uff0c\u8003\u8651\u901a\u8fc7JSON\u8fdb\u884c\u62f7\u8d1d\u3002<br \/>\n\u9010\u4e2a\u4f20\u8f93\u5c5e\u6027\u7684\u4ee3\u7801\u5bb9\u6613\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n<p>\u5c06\u6765\u53ef\u80fd\u6dfb\u52a0\u5c5e\u6027\u65f6\uff0c\u7531\u4e8e\u53ef\u80fd\u53d1\u751f\u8f6c\u79fb\u6f0f\u6d1e\uff0c\u56e0\u6b64\u5c3d\u91cf\u907f\u514d\u5c5e\u6027\u8f6c\u79fb\u3002\u6bd4\u5982\u8fd9\u6837\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"n\">Copy<\/span><span class=\"p\">(<\/span><span class=\"n\">src<\/span> <span class=\"k\">interface<\/span><span class=\"p\">{},<\/span> <span class=\"n\">dest<\/span> <span class=\"k\">interface<\/span><span class=\"p\">{},<\/span> <span class=\"n\">allowUnknownFields<\/span> <span class=\"kt\">bool<\/span><span class=\"p\">)<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n\r\n    <span class=\"n\">data<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">json<\/span><span class=\"o\">.<\/span><span class=\"n\">Marshal<\/span><span class=\"p\">(<\/span><span class=\"n\">src<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">errors<\/span><span class=\"o\">.<\/span><span class=\"n\">WithStack<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">dec<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">json<\/span><span class=\"o\">.<\/span><span class=\"n\">NewDecoder<\/span><span class=\"p\">(<\/span><span class=\"n\">bytes<\/span><span class=\"o\">.<\/span><span class=\"n\">NewReader<\/span><span class=\"p\">(<\/span><span class=\"n\">data<\/span><span class=\"p\">))<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">!<\/span><span class=\"n\">allowUnknownFields<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">dec<\/span><span class=\"o\">.<\/span><span class=\"n\">DisallowUnknownFields<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">=<\/span> <span class=\"n\">dec<\/span><span class=\"o\">.<\/span><span class=\"n\">Decode<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">dest<\/span><span class=\"p\">);<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">errors<\/span><span class=\"o\">.<\/span><span class=\"n\">WithStack<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5f53allowUnknownFields\u53c2\u6570\u4e3afalse\u65f6\uff0c\u5982\u679c\u8981\u590d\u5236\u7684\u5c5e\u6027\u4e0d\u8db3\uff0c\u5c06\u4f1a\u4ea7\u751f\u9519\u8bef\u3002\u8fd9\u6837\u53ef\u4ee5\u9632\u6b62\u9057\u6f0f\u590d\u5236\u3002<\/p>\n<p>\u55ef\uff0c\u5982\u679c\u4f60\u771f\u7684\u5f88\u5728\u610f\u6027\u80fd\u7684\u8bdd\uff0c\u4e5f\u8bb8\u53ef\u4ee5\u4e3a\u6a21\u578b\u51c6\u5907\u4e00\u4e2a\u590d\u5236\u6784\u9020\u51fd\u6570\u7684\u65b9\u6cd5\u3002<\/p>\n<h3>MarshalJSON\/UnmarshalJSON &#8211; \u7f16\u7801\/\u89e3\u7801JSON<\/h3>\n<p>\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u81ea\u7531\u5730\u66f4\u6539\u5982 time.Time \u8fd9\u6837\u7684\u73b0\u6709\u7c7b\u578b\u7684 JSON \u8868\u793a\u65b9\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">MyTime<\/span> <span class=\"n\">time<\/span><span class=\"o\">.<\/span><span class=\"n\">Time<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">t<\/span> <span class=\"o\">*<\/span><span class=\"n\">MyTime<\/span><span class=\"p\">)<\/span> <span class=\"n\">MarshalJSON<\/span><span class=\"p\">()<\/span> <span class=\"p\">([]<\/span><span class=\"kt\">byte<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">t<\/span> <span class=\"o\">*<\/span><span class=\"n\">MyTime<\/span><span class=\"p\">)<\/span> <span class=\"n\">UnmarshalJSON<\/span><span class=\"p\">([]<\/span><span class=\"kt\">byte<\/span><span class=\"p\">)<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u5b9e\u73b0\u8fd9\u4e00\u63a5\u53e3\uff0c\u53ef\u4ee5\u5c06\u65f6\u95f4.Time\u4f5c\u4e3a\u503c\u5e76\u81ea\u5b9a\u4e49\u5176JSON\u8868\u793a\u3002<\/p>\n<h2>3-8. \u5f02\u6b65<\/h2>\n<p>\u5b66\u4e60goroutine\u548cchannel\u5728golang\u8bbe\u8ba1\u4e2d\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u5c24\u5176\u662f\u4e3a\u4e86\u7f16\u5199\u6d41\u5f0fIO\u5904\u7406\uff0c\u9700\u8981\u4f7f\u7528goroutine\u548cio.Pipe\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<h3>\u4e0d\u4f7f\u7528\u9501\uff0c\u800c\u662f\u4f7f\u7528\u901a\u9053<\/h3>\n<p>\u5728\u5199\u5f02\u6b65\u5904\u7406\u65f6\uff0c\u5176\u4ed6\u8bed\u8a00\u901a\u5e38\u9700\u8981\u4f7f\u7528\u9501\uff0c\u4f46\u5728golang\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u901a\u9053\u800c\u4e0d\u662f\u9501\u3002<br \/>\n\u5177\u4f53\u6765\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u901a\u9053\u8fdb\u884c\u7ebf\u7a0b\u95f4\u901a\u4fe1\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u9501\u6765\u8bfb\u5199\u5171\u4eab\u5185\u5b58\u3002<\/p>\n<h2>3-9. \u8bc4\u8bba<\/h2>\n<p>\u5728Golang\u4e2d\uff0c\u4f3c\u4e4e\u6ca1\u6709\u50cfpydoc\u6216javadoc\u90a3\u6837\u5199\u8be6\u7ec6\u6ce8\u91ca\u7684\u6587\u5316\u3002<br \/>\n\u57fa\u672c\u4e0a\uff0c\u6211\u4eec\u5e94\u8be5\u52aa\u529b\u5199\u4e00\u4e9b\u5373\u4f7f\u6ca1\u6709\u6ce8\u91ca\u4e5f\u80fd\u7406\u89e3\u7684\u4ee3\u7801\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u5982\u6709\u9700\u8981\uff0c\u5c3d\u5feb\u5199\u4e0b\u60a8\u7684\u8bc4\u8bba\uff01\u5c24\u5176\u662f\u5bf9\u4e8e\u4ed6\u4eba\u53ef\u80fd\u4f7f\u7528\u7684\u5171\u4eab\u5e93\u4ee3\u7801\uff0c\u52a1\u5fc5\u64b0\u5199\u8be6\u7ec6\u7684README\u6ce8\u91ca\u548c\u53ef\u7406\u89e3\u7684\u6d4b\u8bd5\u65b9\u5f0f\u3002<\/p>\n<h2>3-10. \u8003\u8bd5<\/h2>\n<p>\u6211\u4eec\u5e94\u8be5\u4e3a\u6bcf\u4e2a\u6a21\u5757\u548c\u51fd\u6570\u7f16\u5199\u5355\u5143\u6d4b\u8bd5\u3002<br \/>\n\u8ba9\u6211\u4eec\u4e3a\u6bcf\u4e2a\u9879\u76ee\u786e\u5b9a\u4f7f\u7528gomock\u3001mockery\u7b49mock\u5e93\u3002<\/p>\n<p>\u6d4b\u8bd5\u4e0d\u4ec5\u4ec5\u662f\u7528\u6765\u786e\u8ba4\u4ee3\u7801\u662f\u5426\u6b63\u5e38\u8fd0\u884c\uff0c\u4e5f\u662f\u7528\u6765\u786e\u8ba4\u4f7f\u7528\u4ee3\u7801\u7684\u65b9\u6cd5\u7684\u3002<br \/>\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u6d4b\u8bd5\u4e5f\u662f\u8bc4\u8bba\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<h3>\u4f7f\u7528\u6d88\u606f\u8fdb\u884c\u6d4b\u8bd5\u548c\u4f7f\u7528\u72b6\u6001\u8fdb\u884c\u6d4b\u8bd5<\/h3>\n<p>\u5728\u6d4b\u8bd5\u4e2d\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u3002\u4e00\u79cd\u662f\u57fa\u4e8e\u6d88\u606f\u7684\u6d4b\u8bd5\uff0c\u53e6\u4e00\u79cd\u662f\u57fa\u4e8e\u72b6\u6001\u7684\u6d4b\u8bd5\u3002<\/p>\n<p>\u57fa\u4e8e\u6d88\u606f\u7684\u6d4b\u8bd5\u4f7f\u7528\u5047\u7684\u8bf7\u6c42\u548c\u54cd\u5e94\u5185\u5bb9\u6765\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n<p>\u57fa\u4e8e\u72b6\u6001\u7684\u6d4b\u8bd5\u5219\u662f\u901a\u8fc7\u51c6\u5907\u771f\u5b9e\u7684\u5b58\u50a8\u8bbe\u65bd\uff08\u5982RDB\uff09\uff0c\u5e76\u786e\u8ba4\u201c\u6700\u7ec8\u7684\u72b6\u6001\u662f\u600e\u6837\u7684\u201d\u6765\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n<p>\u6211\u8ba4\u4e3a\uff0c\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\u5e94\u5c3d\u53ef\u80fd\u4f7f\u7528\u6d88\u606f\u6765\u7f16\u5199\u6d4b\u8bd5\u3002\u4f46\u662f\uff0c\u6709\u4e9b\u60c5\u51b5\u786e\u5b9e\u9700\u8981\u7f16\u5199\u4f7f\u7528\u72b6\u6001\u7684\u6d4b\u8bd5\u3002<\/p>\n<p>\u5728\u67e5\u8be2\u590d\u6742\u7684\u60c5\u51b5\u4e0b\uff0c\u5982RDB\u7b49\uff0c\u4f7f\u7528\u6d88\u606f\u8fdb\u884c\u6d4b\u8bd5\u5f88\u96be\u8bc1\u660e\u5176\u6b63\u786e\u6027\u3002<\/p>\n<p>\u4f7f\u7528\u72b6\u6001\u8fdb\u884c\u6d4b\u8bd5\u65f6\uff0c\u5e94\u5c06\u5176\u9650\u5236\u5728\u6700\u5c0f\u8303\u56f4\u5185\u8fdb\u884c\u3002\u800c\u5728\u5176\u4ed6\u5730\u65b9\uff0c\u6211\u8ba4\u4e3a\u4f7f\u7528\u6d88\u606f\u8fdb\u884c\u6d4b\u8bd5\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002<\/p>\n<h3>\u7334\u5b50\u4fee\u8865<\/h3>\n<p>\u5982\u679c\u65e0\u6cd5\u8fdb\u884c\u6a21\u62dfDI\uff0c\u5c31\u9700\u8981\u4f7f\u7528monkey patch\u3002\u4e0d\u8fc7\uff0c\u7531\u4e8emonkey patch\u7684\u64cd\u4f5c\u5f80\u5f80\u5b58\u5728\u95ee\u9898\uff0c\u56e0\u6b64\u6700\u597d\u5c3d\u91cf\u9650\u5236\u4f7f\u7528\u3002<\/p>\n<hr \/>\n<h1>4. \uff08\u589e\u52a0\uff09<\/h1>\n<h2>4-1. \u9664\u5916<\/h2>\n<p>Golang\u7684\u5f02\u5e38\u662f\u503c\u3002\u5b83\u662f\u4e00\u79cd\u7279\u522b\u7684\u8bed\u8a00\uff0c\u6ca1\u6709\u50cftry-catch\u8fd9\u6837\u5904\u7406\u5f02\u5e38\u7684\u7279\u6b8a\u673a\u5236\u3002<\/p>\n<h3>\u5c3d\u65e9\u8fd4\u56de<\/h3>\n<p>\u5982\u679c\u53d1\u751f\u5f02\u5e38\uff0c\u4f3c\u4e4e\u5728Go\u8bed\u8a00\u4e2d&#8221;\u7acb\u5373\u8fd4\u56de&#8221;\u662f\u4e00\u79cd\u60ef\u4f8b\u3002<\/p>\n<h3>\u53ea\u6709\u5728\u60f3\u8981\u7ec8\u6b62\u8fdb\u7a0b\u65f6\u624d\u4f7f\u7528&#8221;panic&#8221;\u3002<\/h3>\n<p>\u867d\u7136\u901a\u8fc7 panic recover \u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u4e8e try catch \u7684\u529f\u80fd\uff0c\u4f46\u6211\u8ba4\u4e3a\u8fd9\u79cd\u7528\u6cd5\u4e0d\u88ab\u63a8\u8350\uff01\u4e3a\u4e86\u4f18\u96c5\u5730\u5173\u95ed\u548c\u8bb0\u5f55 panic \u7684\u539f\u56e0\uff0c\u8bf7\u4e0d\u8981\u5fd8\u8bb0\u5728 main.go \u4e2d\u4f7f\u7528 recover\uff01<\/p>\n<h3>\u4f7f\u7528pkg\/errors\u5305\u800c\u4e0d\u662ferrors\u5305\u3002<\/h3>\n<p>pkg\/errors\u4f1a\u521b\u5efa\u5177\u6709\u5806\u6808\u8ddf\u8e2a\u4fe1\u606f\u7684\u5f02\u5e38\u5bf9\u8c61\u3002<br \/>\n\u666e\u901a\u7684errors\u5305\u7684\u4fe1\u606f\u91cf\u901a\u5e38\u4e0d\u8db3\u3002<br \/>\n\u52a1\u5fc5\u4f7f\u7528pkg\/errors\u3002<\/p>\n<h3>\u6ca1\u6709\u539f\u56e0\u53e5<\/h3>\n<p>\u5728\u5176\u4ed6\u8bed\u8a00\u4e2d\uff0c\u901a\u5e38\u90fd\u4f1a\u6709\u4e3a\u4e86\u5f02\u5e38\u7684\u91cd\u65b0\u629b\u51fa\u800c\u63d0\u4f9b\u7684cause\u673a\u5236\uff0c\u4f46\u5728Golang\u4e2d\u5e76\u6ca1\u6709\u3002\u6211\u8ba4\u4e3a\u53ea\u8bb0\u5f55\u4e0bcause\u4ee5\u4fbf\u91cd\u65b0\u629b\u51fa\u5f02\u5e38\u53ef\u80fd\u8db3\u591f\u4e86\uff0c\u4f46\u8003\u8651\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u53ef\u80fd\u66f4\u597d\u3002<\/p>\n<h3>\u4e0d\u653e\u5f03\u4f8b\u5916<\/h3>\n<p>\u53ea\u8981\u54ac\u7d27\u7259\u5173\uff0c\u4e0d\u653e\u8fc7\u4efb\u4f55\u4f8b\u5916\uff0c\u5c31\u5e94\u8be5\u9677\u5165\u6050\u614c\u3002<\/p>\n<hr \/>\n<p>\u9996\u5148\uff0c\u5230\u76ee\u524d\u4e3a\u6b62\uff08\u6b63\u5728\u7f16\u8f91\u4e2d\uff09\u3002<\/p>\n<p>\u867d\u7136Golang\u7279\u6709\u7684\u4e1c\u897f\u4e0e\u5176\u4ed6\u7684\u6df7\u5728\u4e00\u8d77\uff0c\u4f46\u662f\u5e94\u8be5\u5254\u9664\u5b83\u4eec\u5417\uff1f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u5728\u8bbe\u8ba1Golang\u65f6\u4e2a\u4eba\u7684\u6ce8\u610f\u4e8b\u9879\u8bb0\u5728\u4e0b\u9762\u3002 \u76ee\u6807\u662f\u8f83\u5927\u89c4\u6a21\u7684Web\u5e94\u7528\u7a0b\u5e8f\u3002\u5982\u679c\u662f\u5c0f\u578b\u5de5\u5177\u53ef\u80fd\u4f1a\u6709\u6240\u5dee\u5f02\u3002 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44082","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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>[Golang] \u5728 Golang \u7684\u8bbe\u8ba1\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879 - Blog - Silicon Cloud<\/title>\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\/golang-\u5728-golang-\u7684\u8bbe\u8ba1\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Golang] \u5728 Golang \u7684\u8bbe\u8ba1\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879\" \/>\n<meta property=\"og:description\" content=\"\u6211\u5728\u8bbe\u8ba1Golang\u65f6\u4e2a\u4eba\u7684\u6ce8\u610f\u4e8b\u9879\u8bb0\u5728\u4e0b\u9762\u3002 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