{"id":57692,"date":"2024-10-10T20:24:28","date_gmt":"2024-10-10T12:24:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57692\/"},"modified":"2024-10-10T20:24:28","modified_gmt":"2024-10-10T12:24:28","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80-reflect-elem-%e9%80%9a%e9%81%8e%e5%8f%8d%e5%b0%84%e7%8d%b2%e5%8f%96%e6%8c%87%e9%87%9d%e6%8c%87%e5%90%91%e7%9a%84%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57692\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00 reflect.Elem()\u2014\u2014\u901a\u904e\u53cd\u5c04\u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80-reflect-elem-%e9%80%9a%e9%81%8e%e5%8f%8d%e5%b0%84%e7%8d%b2%e5%8f%96%e6%8c%87%e9%87%9d%e6%8c%87%e5%90%91%e7%9a%84%e5%85%83%e7%b4%a0-NerNzJVilT\">GO\u6559\u7a0b: Go \u8a9e\u8a00 reflect.Elem()\u2014\u2014\u901a\u904e\u53cd\u5c04\u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b<\/h1>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u53cd\u5c04\u662f\u4e00\u500b\u5f37\u5927\u7684\u7279\u6027\uff0c\u5141\u8a31\u7a0b\u5e8f\u5728\u904b\u884c\u6642\u6aa2\u67e5\u985e\u578b\u548c\u7d50\u69cb\u3002\u9019\u5c0d\u65bc\u8a31\u591a\u61c9\u7528\u5834\u666f\u4f86\u8aaa\u90fd\u662f\u975e\u5e38\u6709\u7528\u7684\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u52d5\u614b\u8655\u7406\u4e0d\u540c\u985e\u578b\u7684\u6578\u64da\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Go \u8a9e\u8a00\u4e2d\u7684 <code>reflect.Elem()<\/code> \u65b9\u6cd5\uff0c\u4e26\u5c55\u793a\u5982\u4f55\u901a\u904e\u53cd\u5c04\u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b\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-NerNzJVilT\">\u53cd\u5c04\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u53cd\u5c04\u662f Go \u8a9e\u8a00\u7684\u4e00\u500b\u6838\u5fc3\u7279\u6027\uff0c\u901a\u904e <code>reflect<\/code> \u5305\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u904b\u884c\u6642\u7372\u53d6\u985e\u578b\u4fe1\u606f\u3002\u53cd\u5c04\u7684\u4e3b\u8981\u7528\u9014\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u52d5\u614b\u985e\u578b\u6aa2\u67e5<\/li>\n<li>\u52d5\u614b\u8abf\u7528\u65b9\u6cd5<\/li>\n<li>\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u6578\u64da<\/li>\n<\/ul>\n<p>\u5728 Go \u4e2d\uff0c\u6240\u6709\u7684\u985e\u578b\u90fd\u53ef\u4ee5\u901a\u904e <code>reflect.Type<\/code> \u548c <code>reflect.Value<\/code> \u4f86\u8868\u793a\u3002\u7576\u6211\u5011\u9700\u8981\u7372\u53d6\u4e00\u500b\u6307\u91dd\u6240\u6307\u5411\u7684\u5143\u7d20\u985e\u578b\u6642\uff0c<code>reflect.Elem()<\/code> \u65b9\u6cd5\u5c31\u6d3e\u4e0a\u7528\u5834\u4e86\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-reflect-elem-%e7%8d%b2%e5%8f%96%e6%8c%87%e9%87%9d%e6%8c%87%e5%90%91%e7%9a%84%e5%85%83%e7%b4%a0%e9%a1%9e%e5%9e%8b-NerNzJVilT\">\u4f7f\u7528 reflect.Elem() \u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b<\/h2>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u6307\u91dd\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u985e\u578b\uff0c\u7528\u65bc\u5b58\u5132\u8b8a\u91cf\u7684\u5730\u5740\u3002\u7576\u6211\u5011\u6709\u4e00\u500b\u6307\u91dd\u985e\u578b\u7684\u8b8a\u91cf\u6642\uff0c\u4f7f\u7528 <code>reflect.Elem()<\/code> \u53ef\u4ee5\u7372\u53d6\u8a72\u6307\u91dd\u6240\u6307\u5411\u7684\u5177\u9ad4\u985e\u578b\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-NerNzJVilT\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>package main\n\nimport (\n    \"fmt\"\n    \"reflect\"\n)\n\ntype Person struct {\n    Name string\n    Age  int\n}\n\nfunc main() {\n    \/\/ \u5275\u5efa\u4e00\u500b Person \u7684\u6307\u91dd\n    p := &amp;Person{Name: \"Alice\", Age: 30}\n\n    \/\/ \u7372\u53d6\u6307\u91dd\u7684\u985e\u578b\n    ptrType := reflect.TypeOf(p)\n    fmt.Println(\"\u6307\u91dd\u7684\u985e\u578b:\", ptrType)\n\n    \/\/ \u4f7f\u7528 Elem() \u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b\n    elemType := ptrType.Elem()\n    fmt.Println(\"\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b:\", elemType)\n\n    \/\/ \u7372\u53d6\u5143\u7d20\u7684\u5177\u9ad4\u503c\n    elemValue := reflect.ValueOf(p).Elem()\n    fmt.Println(\"\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u503c:\", elemValue)\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u4e00\u500b <code>Person<\/code> \u7d50\u69cb\u7684\u6307\u91dd\uff0c\u7136\u5f8c\u4f7f\u7528 <code>reflect.TypeOf()<\/code> \u7372\u53d6\u8a72\u6307\u91dd\u7684\u985e\u578b\u3002\u63a5\u8457\uff0c\u6211\u5011\u4f7f\u7528 <code>Elem()<\/code> \u65b9\u6cd5\u4f86\u7372\u53d6\u6307\u91dd\u6240\u6307\u5411\u7684\u5143\u7d20\u985e\u578b\uff0c\u4e26\u4f7f\u7528 <code>reflect.ValueOf()<\/code> \u7372\u53d6\u8a72\u5143\u7d20\u7684\u5177\u9ad4\u503c\u3002<\/p>\n<h2 id=\"%e5%8f%8d%e5%b0%84%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-NerNzJVilT\">\u53cd\u5c04\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136\u53cd\u5c04\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u6027\u80fd\uff1a\u53cd\u5c04\u7684\u6027\u80fd\u901a\u5e38\u4e0d\u5982\u76f4\u63a5\u8a2a\u554f\u8b8a\u91cf\uff0c\u56e0\u6b64\u5728\u6027\u80fd\u654f\u611f\u7684\u5834\u666f\u4e2d\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<li>\u5b89\u5168\u6027\uff1a\u53cd\u5c04\u53ef\u80fd\u6703\u5c0e\u81f4\u985e\u578b\u4e0d\u5b89\u5168\u7684\u64cd\u4f5c\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u6642\u9700\u8981\u78ba\u4fdd\u985e\u578b\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<li>\u53ef\u8b80\u6027\uff1a\u904e\u5ea6\u4f7f\u7528\u53cd\u5c04\u53ef\u80fd\u6703\u4f7f\u4ee3\u78bc\u8b8a\u5f97\u96e3\u4ee5\u7406\u89e3\uff0c\u61c9\u8a72\u9069\u5ea6\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NerNzJVilT\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u6211\u5011\u4e86\u89e3\u4e86 Go \u8a9e\u8a00\u4e2d\u7684 <code>reflect.Elem()<\/code> \u65b9\u6cd5\u53ca\u5176\u5728\u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b\u4e2d\u7684\u61c9\u7528\u3002\u53cd\u5c04\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u9700\u8981\u8b39\u614e\u8003\u616e\u6027\u80fd\u548c\u5b89\u5168\u6027\u7b49\u56e0\u7d20\u3002\u5e0c\u671b\u9019\u7bc7\u6587\u7ae0\u80fd\u5e6b\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3 Go \u8a9e\u8a00\u7684\u53cd\u5c04\u6a5f\u5236\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u500b\u4eba\u9805\u76ee\u9084\u662f\u4f01\u696d\u61c9\u7528\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 Go \u8a9e\u8a00\u4e2d\u7684 reflect.Elem() \u51fd\u6578\uff0c\u5b78\u7fd2\u5982\u4f55\u901a\u904e\u53cd\u5c04\u7372\u53d6\u6307\u91dd\u6307\u5411\u7684\u5143\u7d20\u985e\u578b\uff0c\u63d0\u5347\u4f60\u7684\u7de8\u7a0b\u6280\u5de7\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-57692","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57692","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=57692"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57692\/revisions"}],"predecessor-version":[{"id":57693,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57692\/revisions\/57693"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}