{"id":206473,"date":"2025-06-12T14:51:05","date_gmt":"2025-06-12T06:51:05","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206473\/"},"modified":"2025-06-12T14:51:05","modified_gmt":"2025-06-12T06:51:05","slug":"go-%e8%af%ad%e8%a8%80%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b%e4%b8%ad-errchan","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206473\/","title":{"rendered":"Go \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan"},"content":{"rendered":"<p>\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60GOLANG\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aGo \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan \u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241112\/1731416787673352d314aa7.jpg\" class=\"aligncenter\">,<br \/>\n<strong>errChan &lt;- err \u7684\u542b\u4e49<\/strong>,\u5728 Go \u8bed\u8a00\u7684\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0c\u901a\u9053 (channel) \u662f\u4e00\u79cd\u91cd\u8981\u7684\u901a\u4fe1\u673a\u5236\uff0c\u7528\u4e8e\u5171\u4eab\u6570\u636e\u3002\u5728\u63d0\u4f9b\u7684\u4ee3\u7801\u4e2d\uff0cerrChan &lt;- err \u8bed\u53e5\u8868\u793a\u5c06\u9519\u8bef err \u53d1\u9001\u5230\u4e00\u4e2a\u901a\u9053 errChan \u4e2d\u3002,<br \/>\n<strong>io.Reader \u548c io.Writer \u7684\u7528\u9014<\/strong>,<br \/>\n<strong>io.Copy(dst, src) \u7684\u4f5c\u7528<\/strong>,io.Copy \u51fd\u6570\u5c06\u6570\u636e\u4ece\u6e90\u6d41 src \u590d\u5236\u5230\u76ee\u6807\u6d41 dst\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u5b83\u53cd\u590d\u8c03\u7528 src \u7684 Read \u65b9\u6cd5\u8bfb\u53d6\u6570\u636e\uff0c\u7136\u540e\u8c03\u7528 dst \u7684 Write \u65b9\u6cd5\u5199\u5165\u6570\u636e\uff0c\u76f4\u5230\u6e90\u6d41\u5230\u8fbe\u672b\u5c3e\u6216\u53d1\u751f\u9519\u8bef\u3002,\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aGo \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan \u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002,io.Writer\uff1a\u4ee3\u8868\u4e00\u4e2a\u53ea\u5199\u6d41\uff0c\u5b83\u63d0\u4f9b Write \u65b9\u6cd5\u6765\u5199\u5165\u6570\u636e\u3002\u6587\u4ef6\u3001\u7f51\u7edc\u8fde\u63a5\u548c\u7f13\u51b2\u533a\u4e5f\u53ef\u4ee5\u5b9e\u73b0 io.Writer \u63a5\u53e3\u3002,io.Reader\uff1a\u4ee3\u8868\u4e00\u4e2a\u53ea\u8bfb\u6d41\uff0c\u5b83\u63d0\u4f9b Read \u65b9\u6cd5\u6765\u8bfb\u53d6\u6570\u636e\u3002\u6587\u4ef6\u3001\u7f51\u7edc\u8fde\u63a5\u548c\u7f13\u51b2\u533a\u90fd\u53ef\u4ee5\u5b9e\u73b0 io.Reader \u63a5\u53e3\u3002,errChan &lt;- err \u7684\u542b\u4e49,\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60GOLANG\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aGo \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan \u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01,<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>Go \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan <\/span><\/p>\n<h1>Go \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan <\/h1>\n<p><span>2024-11-12 21:06:42<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60GOLANG\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aGo \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan \u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241112\/1731416787673352d314aa7.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>errChan &lt;- err \u7684\u542b\u4e49<\/strong><\/p>\n<p>\u5728 Go \u8bed\u8a00\u7684\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0c\u901a\u9053 (channel) \u662f\u4e00\u79cd\u91cd\u8981\u7684\u901a\u4fe1\u673a\u5236\uff0c\u7528\u4e8e\u5171\u4eab\u6570\u636e\u3002\u5728\u63d0\u4f9b\u7684\u4ee3\u7801\u4e2d\uff0cerrChan &lt;- err \u8bed\u53e5\u8868\u793a\u5c06\u9519\u8bef err \u53d1\u9001\u5230\u4e00\u4e2a\u901a\u9053 errChan \u4e2d\u3002<\/p>\n<p><strong>io.Reader \u548c io.Writer \u7684\u7528\u9014<\/strong><\/p>\n<ul>\n<li>io.Reader\uff1a\u4ee3\u8868\u4e00\u4e2a\u53ea\u8bfb\u6d41\uff0c\u5b83\u63d0\u4f9b Read \u65b9\u6cd5\u6765\u8bfb\u53d6\u6570\u636e\u3002\u6587\u4ef6\u3001\u7f51\u7edc\u8fde\u63a5\u548c\u7f13\u51b2\u533a\u90fd\u53ef\u4ee5\u5b9e\u73b0 io.Reader \u63a5\u53e3\u3002<\/li>\n<li>io.Writer\uff1a\u4ee3\u8868\u4e00\u4e2a\u53ea\u5199\u6d41\uff0c\u5b83\u63d0\u4f9b Write \u65b9\u6cd5\u6765\u5199\u5165\u6570\u636e\u3002\u6587\u4ef6\u3001\u7f51\u7edc\u8fde\u63a5\u548c\u7f13\u51b2\u533a\u4e5f\u53ef\u4ee5\u5b9e\u73b0 io.Writer \u63a5\u53e3\u3002<\/li>\n<\/ul>\n<p><strong>io.Copy(dst, src) \u7684\u4f5c\u7528<\/strong><\/p>\n<p>io.Copy \u51fd\u6570\u5c06\u6570\u636e\u4ece\u6e90\u6d41 src \u590d\u5236\u5230\u76ee\u6807\u6d41 dst\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u5b83\u53cd\u590d\u8c03\u7528 src \u7684 Read \u65b9\u6cd5\u8bfb\u53d6\u6570\u636e\uff0c\u7136\u540e\u8c03\u7528 dst \u7684 Write \u65b9\u6cd5\u5199\u5165\u6570\u636e\uff0c\u76f4\u5230\u6e90\u6d41\u5230\u8fbe\u672b\u5c3e\u6216\u53d1\u751f\u9519\u8bef\u3002<\/p>\n<p>\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aGo \u8bed\u8a00\u5e76\u53d1\u7f16\u7a0b\u4e2d errChan \u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u63a2\u7a76\u7535\u8111\u663e\u5361\u63a5\u53e3\uff1a\u4eceVGA\u5230HDMI\uff0c\u4e00\u6587\u8be6\u89e3\u8ba1\u7b97\u673a\u56fe\u50cf\u4f20\u8f93\u6807\u51c6\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   Vue2\u8868\u683c\u9690\u85cf\u5217\u540e\u51fa\u73b0\u7a7a\u767d\u884c\u95ee\u9898\u5982\u4f55\u89e3\u51b3\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f&#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-206473","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206473","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=206473"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206473\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}