{"id":206432,"date":"2025-06-12T09:51:13","date_gmt":"2025-06-12T01:51:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206432\/"},"modified":"2025-06-12T09:51:13","modified_gmt":"2025-06-12T01:51:13","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%9c%a8-golang-%e4%b8%ad%ef%bc%8c%e5%af%bc%e5%85%a5%e5%8c%85%e6%97%b6%e4%bd%bf%e7%94%a8-%e8%b5%8b%e5%80%bc%e7%bb%99%e5%af%bc%e5%87%ba%e5%8f%98%e9%87%8f%e4%bc%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206432\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u5728 Golang \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f"},"content":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u4e3a\u4ec0\u4e48\u5728 GOLANG \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241112\/17313721556732a47b399a6.jpg\" class=\"aligncenter\">,<br \/>\n<strong>golang \u65e0\u6cd5\u8bbf\u95ee\u5bfc\u5165\u5305\u4e2d\u7684\u5bfc\u51fa\u53d8\u91cf<\/strong>,\u5728 golang \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u9700\u8981\u907f\u514d\u5728 init \u51fd\u6570\u4e2d\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f7f\u7528 := \u8d4b\u503c\u3002\u8fd9\u662f\u56e0\u4e3a\u4f7f\u7528 := \u8d4b\u503c\u65f6\uff0c\u53d8\u91cf\u53ea\u5728\u5c40\u90e8\u4f5c\u7528\u57df\u5185\u5b58\u5728\uff0c\u65e0\u6cd5\u8986\u76d6\u5168\u5c40\u5bfc\u51fa\u53d8\u91cf\u3002,\u6765\u770b\u4e00\u4e2a\u793a\u4f8b\uff1a,utils.go\uff1a,main.go\uff1a,\u5728 utils.go \u7684 init \u51fd\u6570\u4e2d\uff0c\u7ed9 esclient \u53d8\u91cf\u4f7f\u7528\u4e86 := \u8d4b\u503c\uff0c\u5bfc\u81f4 esclient \u6210\u4e86\u5c40\u90e8\u53d8\u91cf\uff0c\u4ec5\u5728\u672c\u51fd\u6570\u5185\u6709\u6548\u3002\u56e0\u6b64\uff0c\u5728 main.go \u4e2d\uff0c\u8f93\u51fa\u7684 esclient \u4e3a nil\u3002,\u6b63\u786e\u7684\u505a\u6cd5\u662f\uff1a,\u8fd9\u6837\uff0cinit \u51fd\u6570\u5c06\u5168\u5c40\u5bfc\u51fa\u53d8\u91cf esclient \u7684\u503c\u66ff\u6362\u4e3a\u65b0\u503c\uff0c\u5728 main.go \u4e2d\u5c31\u53ef\u4ee5\u6b63\u786e\u7684\u8bbf\u95ee\u5230\u8fd9\u4e2a\u53d8\u91cf\u3002,\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48\u5728 GOLANG \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01,golang \u65e0\u6cd5\u8bbf\u95ee\u5bfc\u5165\u5305\u4e2d\u7684\u5bfc\u51fa\u53d8\u91cf,\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u4e3a\u4ec0\u4e48\u5728 GOLANG \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>\u4e3a\u4ec0\u4e48\u5728 GOLANG \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f<\/span><\/p>\n<h1>\u4e3a\u4ec0\u4e48\u5728 GOLANG \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f<\/h1>\n<p><span>2024-11-12 08:42:50<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300a\u4e3a\u4ec0\u4e48\u5728 GOLANG \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241112\/17313721556732a47b399a6.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>golang \u65e0\u6cd5\u8bbf\u95ee\u5bfc\u5165\u5305\u4e2d\u7684\u5bfc\u51fa\u53d8\u91cf<\/strong><\/p>\n<p>\u5728 golang \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u9700\u8981\u907f\u514d\u5728 init \u51fd\u6570\u4e2d\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f7f\u7528 := \u8d4b\u503c\u3002\u8fd9\u662f\u56e0\u4e3a\u4f7f\u7528 := \u8d4b\u503c\u65f6\uff0c\u53d8\u91cf\u53ea\u5728\u5c40\u90e8\u4f5c\u7528\u57df\u5185\u5b58\u5728\uff0c\u65e0\u6cd5\u8986\u76d6\u5168\u5c40\u5bfc\u51fa\u53d8\u91cf\u3002<\/p>\n<p>\u6765\u770b\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<p>utils.go\uff1a<\/p>\n<pre>package utils\n\nimport (\n    \"log\"\n\n    \"github.com\/elastic\/go-elasticsearch\/v6\"\n)\n\n\/\/ \u5bfc\u51fa\u53d8\u91cf\nvar esclient *elasticsearch.client\n\nfunc init() {\n    \/\/ ... \u521d\u59cb\u5316 esclient\uff0c\u7c7b\u4f3c\u4e0a\u9762\u7ed9\u51fa\u7684\u4ee3\u7801 ...\n\n    fmt.println(esclient) \/\/ \u8f93\u51fa esclient \u7684\u5730\u5740\uff0c\u975e nil\n}<\/pre>\n<p>main.go\uff1a<\/p>\n<pre>package main\n\nimport \"data_push\/utils\"\n\nfunc main() {\n    fmt.println(utils.esclient) \/\/ \u8f93\u51fa nil\n}<\/pre>\n<p>\u5728 utils.go \u7684 init \u51fd\u6570\u4e2d\uff0c\u7ed9 esclient \u53d8\u91cf\u4f7f\u7528\u4e86 := \u8d4b\u503c\uff0c\u5bfc\u81f4 esclient \u6210\u4e86\u5c40\u90e8\u53d8\u91cf\uff0c\u4ec5\u5728\u672c\u51fd\u6570\u5185\u6709\u6548\u3002\u56e0\u6b64\uff0c\u5728 main.go \u4e2d\uff0c\u8f93\u51fa\u7684 esclient \u4e3a nil\u3002<\/p>\n<p>\u6b63\u786e\u7684\u505a\u6cd5\u662f\uff1a<\/p>\n<pre>func init() {\n    \/\/ ... \u521d\u59cb\u5316 EsClient\uff0c\u7c7b\u4f3c\u4e0a\u9762\u7ed9\u51fa\u7684\u4ee3\u7801 ...\n\n    EsClient = client \/\/ \u8986\u76d6\u5168\u5c40\u5bfc\u51fa\u53d8\u91cf\n}<\/pre>\n<p>\u8fd9\u6837\uff0cinit \u51fd\u6570\u5c06\u5168\u5c40\u5bfc\u51fa\u53d8\u91cf esclient \u7684\u503c\u66ff\u6362\u4e3a\u65b0\u503c\uff0c\u5728 main.go \u4e2d\u5c31\u53ef\u4ee5\u6b63\u786e\u7684\u8bbf\u95ee\u5230\u8fd9\u4e2a\u53d8\u91cf\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48\u5728 GOLANG \u4e2d\uff0c\u5bfc\u5165\u5305\u65f6\u4f7f\u7528 := \u8d4b\u503c\u7ed9\u5bfc\u51fa\u53d8\u91cf\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   Java \u51fd\u6570\u4e2d\u7684return\u8bed\u53e5\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u5728JS\u4e2d\u5b9e\u73b0\u6bcf\u969410\u79d2\u6267\u884c\u4e00\u6b21\u7684\u4efb\u52a1\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-206432","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206432","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=206432"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206432\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}