{"id":57768,"date":"2024-10-10T20:59:16","date_gmt":"2024-10-10T12:59:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57768\/"},"modified":"2024-10-10T20:59:16","modified_gmt":"2024-10-10T12:59:16","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e9%80%9a%e9%81%8e%e5%8f%8d%e5%b0%84%e4%bf%ae%e6%94%b9%e8%ae%8a%e9%87%8f%e7%9a%84%e5%80%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57768\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00\u901a\u904e\u53cd\u5c04\u4fee\u6539\u8b8a\u91cf\u7684\u503c"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e9%80%9a%e9%81%8e%e5%8f%8d%e5%b0%84%e4%bf%ae%e6%94%b9%e8%ae%8a%e9%87%8f%e7%9a%84%e5%80%bc-TJTyqDqGwv\">GO\u6559\u7a0b: Go \u8a9e\u8a00\u901a\u904e\u53cd\u5c04\u4fee\u6539\u8b8a\u91cf\u7684\u503c<\/h1>\n<p>Go \u8a9e\u8a00\u662f\u4e00\u7a2e\u975c\u614b\u985e\u578b\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5177\u6709\u7c21\u6f54\u7684\u8a9e\u6cd5\u548c\u9ad8\u6548\u7684\u6027\u80fd\u3002\u53cd\u5c04\u662f Go \u8a9e\u8a00\u7684\u4e00\u500b\u5f37\u5927\u7279\u6027\uff0c\u5141\u8a31\u7a0b\u5e8f\u5728\u904b\u884c\u6642\u6aa2\u67e5\u985e\u578b\u548c\u4fee\u6539\u8b8a\u91cf\u7684\u503c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u4f86\u4fee\u6539\u8b8a\u91cf\u7684\u503c\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%8f%8d%e5%b0%84%ef%bc%9f-TJTyqDqGwv\">\u4ec0\u9ebc\u662f\u53cd\u5c04\uff1f<\/h2>\n<p>\u53cd\u5c04\u662f\u6307\u5728\u904b\u884c\u6642\u6aa2\u67e5\u985e\u578b\u548c\u64cd\u4f5c\u503c\u7684\u80fd\u529b\u3002\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u53cd\u5c04\u4e3b\u8981\u901a\u904e\u6a19\u6e96\u5eab\u4e2d\u7684 <code>reflect<\/code> \u5305\u4f86\u5be6\u73fe\u3002\u4f7f\u7528\u53cd\u5c04\uff0c\u6211\u5011\u53ef\u4ee5\u7372\u53d6\u8b8a\u91cf\u7684\u985e\u578b\u3001\u503c\uff0c\u751a\u81f3\u53ef\u4ee5\u4fee\u6539\u5b83\u5011\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-TJTyqDqGwv\">\u53cd\u5c04\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u4f7f\u7528\u53cd\u5c04\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u5e7e\u500b\u57fa\u672c\u6982\u5ff5\uff1a<\/p>\n<ul>\n<li><strong>Type:<\/strong> \u8868\u793a\u8b8a\u91cf\u7684\u985e\u578b\u3002<\/li>\n<li><strong>Value:<\/strong> \u8868\u793a\u8b8a\u91cf\u7684\u503c\u3002<\/li>\n<li><strong>Kind:<\/strong> \u8868\u793a\u8b8a\u91cf\u7684\u5177\u9ad4\u985e\u578b\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%e4%bf%ae%e6%94%b9%e8%ae%8a%e9%87%8f%e7%9a%84%e5%80%bc-TJTyqDqGwv\">\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u4fee\u6539\u8b8a\u91cf\u7684\u503c<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528\u53cd\u5c04\u4fee\u6539\u8b8a\u91cf\u503c\u7684\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u5c0e\u5165 <code>reflect<\/code> \u5305\u3002<\/li>\n<li>\u7372\u53d6\u8b8a\u91cf\u7684\u53cd\u5c04\u503c\u3002<\/li>\n<li>\u6aa2\u67e5\u53cd\u5c04\u503c\u662f\u5426\u53ef\u4fee\u6539\u3002<\/li>\n<li>\u4fee\u6539\u53cd\u5c04\u503c\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-TJTyqDqGwv\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>package main\n\nimport (\n    \"fmt\"\n    \"reflect\"\n)\n\nfunc main() {\n    \/\/ \u5b9a\u7fa9\u4e00\u500b\u6574\u6578\u8b8a\u91cf\n    var num int = 10\n    fmt.Println(\"\u4fee\u6539\u524d\u7684\u503c:\", num)\n\n    \/\/ \u7372\u53d6\u8b8a\u91cf\u7684\u53cd\u5c04\u503c\n    value := reflect.ValueOf(&amp;num).Elem()\n\n    \/\/ \u6aa2\u67e5\u53cd\u5c04\u503c\u662f\u5426\u53ef\u4fee\u6539\n    if value.CanSet() {\n        \/\/ \u4fee\u6539\u53cd\u5c04\u503c\n        value.SetInt(20)\n    }\n\n    fmt.Println(\"\u4fee\u6539\u5f8c\u7684\u503c:\", num)\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5b9a\u7fa9\u4e86\u4e00\u500b\u6574\u6578\u8b8a\u91cf <code>num<\/code>\uff0c\u7136\u5f8c\u4f7f\u7528 <code>reflect.ValueOf<\/code> \u7372\u53d6\u5176\u53cd\u5c04\u503c\u3002\u6ce8\u610f\uff0c\u6211\u5011\u9700\u8981\u4f7f\u7528 <code>&amp;num<\/code> \u4f86\u7372\u53d6\u8b8a\u91cf\u7684\u5730\u5740\uff0c\u7136\u5f8c\u4f7f\u7528 <code>Elem()<\/code> \u65b9\u6cd5\u4f86\u7372\u53d6\u5176\u503c\u3002\u63a5\u8457\uff0c\u6211\u5011\u6aa2\u67e5\u8a72\u503c\u662f\u5426\u53ef\u4fee\u6539\uff0c\u82e5\u53ef\u4fee\u6539\u5247\u4f7f\u7528 <code>SetInt<\/code> \u65b9\u6cd5\u5c07\u5176\u503c\u8a2d\u7f6e\u70ba 20\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-TJTyqDqGwv\">\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\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u53cd\u5c04\u7684\u6027\u80fd\u958b\u92b7\u8f03\u5927\uff0c\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<li>\u53cd\u5c04\u53ea\u80fd\u64cd\u4f5c\u53ef\u5c0e\u51fa\uff08exported\uff09\u7684\u5b57\u6bb5\uff0c\u5c0d\u65bc\u672a\u5c0e\u51fa\u7684\u5b57\u6bb5\u7121\u6cd5\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<li>\u4f7f\u7528\u53cd\u5c04\u6642\uff0c\u985e\u578b\u5b89\u5168\u6027\u6703\u964d\u4f4e\uff0c\u9700\u8b39\u614e\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-TJTyqDqGwv\">\u7e3d\u7d50<\/h2>\n<p>\u53cd\u5c04\u662f Go \u8a9e\u8a00\u4e2d\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u7279\u6027\uff0c\u80fd\u5920\u5728\u904b\u884c\u6642\u52d5\u614b\u5730\u6aa2\u67e5\u548c\u4fee\u6539\u8b8a\u91cf\u7684\u503c\u3002\u901a\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u60a8\u61c9\u8a72\u80fd\u5920\u7406\u89e3\u5982\u4f55\u4f7f\u7528\u53cd\u5c04\u4f86\u4fee\u6539\u8b8a\u91cf\u7684\u503c\uff0c\u4e26\u638c\u63e1\u57fa\u672c\u7684\u64cd\u4f5c\u65b9\u6cd5\u3002\u82e5\u60a8\u5c0d\u65bc\u4f3a\u670d\u5668\u7684\u9078\u64c7\u6709\u8208\u8da3\uff0c\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u53ef\u4ee5\u5728\u6211\u5011\u7684\u7db2\u7ad9\u4e0a\u627e\u5230\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Go\u8a9e\u8a00\u7684\u53cd\u5c04\u529f\u80fd\u4f86\u52d5\u614b\u4fee\u6539\u8b8a\u91cf\u7684\u503c\uff0c\u63d0\u5347\u4f60\u7684\u7de8\u7a0b\u6280\u5de7\u548c\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-57768","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57768","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=57768"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57768\/revisions"}],"predecessor-version":[{"id":57769,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57768\/revisions\/57769"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}