{"id":57712,"date":"2024-10-10T20:34:37","date_gmt":"2024-10-10T12:34:37","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57712\/"},"modified":"2024-10-10T20:34:37","modified_gmt":"2024-10-10T12:34:37","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e5%8f%8d%e5%b0%84%ef%bc%88reflection%ef%bc%89%e7%b0%a1%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57712\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00\u53cd\u5c04\uff08reflection\uff09\u7c21\u8ff0"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e5%8f%8d%e5%b0%84%ef%bc%88reflection%ef%bc%89%e7%b0%a1%e8%bf%b0-CJCyRFQKNS\">GO\u6559\u7a0b: Go \u8a9e\u8a00\u53cd\u5c04\uff08reflection\uff09\u7c21\u8ff0<\/h1>\n<p>\u5728\u73fe\u4ee3\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\uff0c\u53cd\u5c04\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u5141\u8a31\u958b\u767c\u8005\u5728\u904b\u884c\u6642\u6aa2\u67e5\u548c\u64cd\u4f5c\u985e\u578b\u53ca\u5176\u5c6c\u6027\u3002Go \u8a9e\u8a00\u4f5c\u70ba\u4e00\u7a2e\u975c\u614b\u985e\u578b\u7684\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u53cd\u5c04\u7684\u529f\u80fd\uff0c\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u5728\u4e0d\u4e8b\u5148\u77e5\u9053\u985e\u578b\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u7c21\u8981\u4ecb\u7d39 Go \u8a9e\u8a00\u4e2d\u7684\u53cd\u5c04\uff0c\u5305\u62ec\u5176\u57fa\u672c\u6982\u5ff5\u3001\u4f7f\u7528\u65b9\u6cd5\u53ca\u5be6\u969b\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%8f%8d%e5%b0%84%ef%bc%9f-CJCyRFQKNS\">\u4ec0\u9ebc\u662f\u53cd\u5c04\uff1f<\/h2>\n<p>\u53cd\u5c04\u662f\u6307\u5728\u904b\u884c\u6642\u6aa2\u67e5\u985e\u578b\u548c\u8b8a\u91cf\u7684\u80fd\u529b\u3002\u9019\u610f\u5473\u8457\u958b\u767c\u8005\u53ef\u4ee5\u7372\u53d6\u8b8a\u91cf\u7684\u985e\u578b\u3001\u503c\uff0c\u751a\u81f3\u53ef\u4ee5\u52d5\u614b\u5730\u4fee\u6539\u5176\u503c\u3002Go \u8a9e\u8a00\u4e2d\u7684\u53cd\u5c04\u4e3b\u8981\u901a\u904e\u6a19\u6e96\u5eab\u4e2d\u7684 <code>reflect<\/code> \u5305\u4f86\u5be6\u73fe\u3002<\/p>\n<h2 id=\"%e5%8f%8d%e5%b0%84%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-CJCyRFQKNS\">\u53cd\u5c04\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u53cd\u5c04\u7684\u6838\u5fc3\u6982\u5ff5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>Type:<\/strong> \u4ee3\u8868\u4e00\u500b\u985e\u578b\u7684\u5143\u6578\u64da\u3002<\/li>\n<li><strong>Value:<\/strong> \u4ee3\u8868\u4e00\u500b\u8b8a\u91cf\u7684\u503c\u3002<\/li>\n<li><strong>Kind:<\/strong> \u985e\u578b\u7684\u5177\u9ad4\u985e\u5225\uff0c\u4f8b\u5982\u6574\u6578\u3001\u5b57\u7b26\u4e32\u3001\u7d50\u69cb\u9ad4\u7b49\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%8f%8d%e5%b0%84-CJCyRFQKNS\">\u5982\u4f55\u4f7f\u7528\u53cd\u5c04<\/h2>\n<p>\u4f7f\u7528\u53cd\u5c04\u7684\u7b2c\u4e00\u6b65\u662f\u5c0e\u5165 <code>reflect<\/code> \u5305\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u4f86\u7372\u53d6\u8b8a\u91cf\u7684\u985e\u578b\u548c\u503c\uff1a<\/p>\n<pre><code>package main\n\nimport (\n    \"fmt\"\n    \"reflect\"\n)\n\nfunc main() {\n    var x float64 = 3.4\n    v := reflect.ValueOf(x)\n    fmt.Println(\"Type:\", v.Type()) \/\/ \u985e\u578b\n    fmt.Println(\"Value:\", v.Float()) \/\/ \u503c\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u6d6e\u9ede\u6578\u8b8a\u91cf <code>x<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528 <code>reflect.ValueOf<\/code> \u51fd\u6578\u4f86\u7372\u53d6\u5176\u53cd\u5c04\u503c\u3002\u63a5\u8457\uff0c\u6211\u5011\u53ef\u4ee5\u901a\u904e <code>Type()<\/code> \u548c <code>Float()<\/code> \u65b9\u6cd5\u4f86\u7372\u53d6\u985e\u578b\u548c\u5177\u9ad4\u503c\u3002<\/p>\n<h2 id=\"%e4%bf%ae%e6%94%b9%e5%80%bc-CJCyRFQKNS\">\u4fee\u6539\u503c<\/h2>\n<p>\u53cd\u5c04\u4e0d\u50c5\u53ef\u4ee5\u7528\u4f86\u8b80\u53d6\u503c\uff0c\u9084\u53ef\u4ee5\u7528\u4f86\u4fee\u6539\u503c\u3002\u4e0d\u904e\uff0c\u70ba\u4e86\u80fd\u5920\u4fee\u6539\u8b8a\u91cf\u7684\u503c\uff0c\u8a72\u8b8a\u91cf\u5fc5\u9808\u662f\u53ef\u4fee\u6539\u7684\uff08\u5373\u5fc5\u9808\u662f\u6307\u91dd\u985e\u578b\uff09\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>package main\n\nimport (\n    \"fmt\"\n    \"reflect\"\n)\n\nfunc main() {\n    x := 10\n    p := reflect.ValueOf(&amp;x) \/\/ \u7372\u53d6\u6307\u91dd\n    v := p.Elem() \/\/ \u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u503c\n    v.SetInt(20) \/\/ \u4fee\u6539\u503c\n    fmt.Println(\"Modified value:\", x) \/\/ \u8f38\u51fa\u4fee\u6539\u5f8c\u7684\u503c\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u9996\u5148\u7372\u53d6\u8b8a\u91cf <code>x<\/code> \u7684\u6307\u91dd\uff0c\u7136\u5f8c\u4f7f\u7528 <code>Elem()<\/code> \u65b9\u6cd5\u4f86\u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u503c\uff0c\u6700\u5f8c\u4f7f\u7528 <code>SetInt()<\/code> \u65b9\u6cd5\u4f86\u4fee\u6539\u8a72\u503c\u3002<\/p>\n<h2 id=\"%e5%8f%8d%e5%b0%84%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-CJCyRFQKNS\">\u53cd\u5c04\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u53cd\u5c04\u5728\u8a31\u591a\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316:<\/strong> \u5728 JSON \u6216 XML \u7684\u7de8\u78bc\u548c\u89e3\u78bc\u904e\u7a0b\u4e2d\uff0c\u53cd\u5c04\u53ef\u4ee5\u7528\u4f86\u52d5\u614b\u5730\u7372\u53d6\u7d50\u69cb\u9ad4\u7684\u5b57\u6bb5\u4fe1\u606f\u3002<\/li>\n<li><strong>ORM \u6846\u67b6:<\/strong> \u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\uff0cORM \u6846\u67b6\u901a\u5e38\u4f7f\u7528\u53cd\u5c04\u4f86\u5c07\u6578\u64da\u5eab\u8868\u6620\u5c04\u5230 Go \u7d50\u69cb\u9ad4\u3002<\/li>\n<li><strong>\u6e2c\u8a66:<\/strong> \u5728\u55ae\u5143\u6e2c\u8a66\u4e2d\uff0c\u53cd\u5c04\u53ef\u4ee5\u7528\u4f86\u6aa2\u67e5\u79c1\u6709\u5b57\u6bb5\u6216\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CJCyRFQKNS\">\u7e3d\u7d50<\/h2>\n<p>Go \u8a9e\u8a00\u7684\u53cd\u5c04\u529f\u80fd\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\u548c\u52d5\u614b\u6027\uff0c\u4f7f\u5f97\u5728\u904b\u884c\u6642\u6aa2\u67e5\u548c\u64cd\u4f5c\u985e\u578b\u6210\u70ba\u53ef\u80fd\u3002\u96d6\u7136\u53cd\u5c04\u5e36\u4f86\u4e86\u5f37\u5927\u7684\u529f\u80fd\uff0c\u4f46\u4e5f\u9700\u8981\u8b39\u614e\u4f7f\u7528\uff0c\u56e0\u70ba\u904e\u5ea6\u4f7f\u7528\u53cd\u5c04\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\u548c\u53ef\u8b80\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9748\u6d3b\u8655\u7406\u6578\u64da\u7684\u61c9\u7528\u5834\u666f\uff0c\u53cd\u5c04\u7121\u7591\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u958b\u767c\u74b0\u5883\u9084\u662f\u751f\u7522\u74b0\u5883\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Go\u8a9e\u8a00\u4e2d\u7684\u53cd\u5c04\uff08reflection\uff09\u6982\u5ff5\uff0c\u5b78\u7fd2\u5982\u4f55\u52d5\u614b\u6aa2\u67e5\u548c\u64cd\u4f5c\u985e\u578b\u53ca\u5176\u503c\uff0c\u63d0\u5347\u7a0b\u5f0f\u8a2d\u8a08\u9748\u6d3b\u6027\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-57712","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57712","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=57712"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57712\/revisions"}],"predecessor-version":[{"id":57713,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57712\/revisions\/57713"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}