{"id":205966,"date":"2025-06-12T10:23:12","date_gmt":"2025-06-12T02:23:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205966\/"},"modified":"2025-06-12T10:23:12","modified_gmt":"2025-06-12T02:23:12","slug":"go-%e8%af%ad%e8%a8%80%e4%b8%ad-_-error-_errornil-%e8%af%ad%e6%b3%95%e7%9a%84%e4%bd%9c%e7%94%a8%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205966\/","title":{"rendered":"Go \u8bed\u8a00\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762GOLANG\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGOLANG\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aGo \u8bed\u8a00\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241029\/17302108076720ebf7ad519.jpg\" class=\"aligncenter\">,<br \/>\n<strong>\u89e3\u6790 _ Error = (*_Error)(nil)<\/strong>,\u5728 Go \u8bed\u8a00\u4e2d\uff0c\u5224\u65ad\u4e00\u4e2a\u7ed3\u6784\u4f53\u662f\u5426\u5b9e\u73b0\u4e86\u67d0\u4e2a\u63a5\u53e3\u53ef\u4ee5\u4f7f\u7528 var _ \u63a5\u53e3\u540d = (*\u7ed3\u6784\u4f53\u540d)(nil) \u8bed\u6cd5\u3002\u8fd9\u4e2a\u8bed\u6cd5\u7528\u4e8e\u5728\u7f16\u8bd1\u65f6\u68c0\u67e5\u7ed3\u6784\u4f53\u662f\u5426\u6b63\u786e\u5b9e\u73b0\u4e86\u63a5\u53e3\u3002,\u5728\u7ed9\u5b9a\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cError \u662f\u4e00\u4e2a\u63a5\u53e3\uff0c_Error \u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\uff0c\u8bed\u6cd5 _ Error = (*_Error)(nil) \u8868\u793a\uff1a,nil \u503c\u7ecf\u5e38\u7528\u4e8e\u8868\u793a\u7a7a\u6216\u672a\u521d\u59cb\u5316\u7684\u6307\u9488\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5b83\u4f5c\u4e3a\u4e00\u79cd\u5360\u4f4d\u7b26\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa Error \u63a5\u53e3\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u6ca1\u6709\u5b9e\u9645\u5173\u8054\u7684\u7ed3\u6784\u4f53\u5b9e\u4f8b\u3002\u8fd9\u5141\u8bb8\u7f16\u8bd1\u5668\u5728\u8fd0\u884c\u65f6\u68c0\u67e5 _Error \u662f\u5426\u6b63\u786e\u5b9e\u73b0\u4e86 Error \u63a5\u53e3\u3002,\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8be5\u8bed\u6cd5\u53ea\u7528\u4e8e\u7f16\u8bd1\u65f6\u68c0\u67e5\u63a5\u53e3\u5b9e\u73b0\u3002\u5b83\u5e76\u4e0d\u610f\u5473\u7740 _Error \u7ed3\u6784\u4f53\u5b9e\u9645\u4e0a\u5305\u542b nil \u503c\u3002\u5b83\u53ea\u662f\u4e00\u79cd\u5f3a\u5236\u8f6c\u6362\u673a\u5236\uff0c\u7528\u4e8e\u5728\u7f16\u8bd1\u65f6\u9a8c\u8bc1\u63a5\u53e3\u5b9e\u73b0\u3002,\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aGo \u8bed\u8a00\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01,(nil) \u5f3a\u5236\u5c06 _Error \u7684\u503c\u8f6c\u6362\u4e3a Error \u7c7b\u578b\u3002\u8be5\u5f3a\u5236\u8f6c\u6362\u662f\u4e3a\u4e86\u521b\u5efa\u4e00\u4e2a\u503c\u4e3a nil \u7684 Error \u63a5\u53e3\u7c7b\u578b\u53d8\u91cf\u3002,var _ Error = (*_Error) \u8868\u660e _Error \u5b9e\u73b0\u4e86 Error \u63a5\u53e3\u3002,\u89e3\u6790 _ Error = (*_Error)(nil),\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762GOLANG\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGOLANG\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aGo \u8bed\u8a00\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\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\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/span><\/p>\n<h1>Go \u8bed\u8a00\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/h1>\n<p><span>2024-10-29 22:07:03<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762GOLANG\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGOLANG\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aGo \u8bed\u8a00\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241029\/17302108076720ebf7ad519.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u89e3\u6790 _ Error = (*_Error)(nil)<\/strong><\/p>\n<p>\u5728 Go \u8bed\u8a00\u4e2d\uff0c\u5224\u65ad\u4e00\u4e2a\u7ed3\u6784\u4f53\u662f\u5426\u5b9e\u73b0\u4e86\u67d0\u4e2a\u63a5\u53e3\u53ef\u4ee5\u4f7f\u7528 var _ \u63a5\u53e3\u540d = (*\u7ed3\u6784\u4f53\u540d)(nil) \u8bed\u6cd5\u3002\u8fd9\u4e2a\u8bed\u6cd5\u7528\u4e8e\u5728\u7f16\u8bd1\u65f6\u68c0\u67e5\u7ed3\u6784\u4f53\u662f\u5426\u6b63\u786e\u5b9e\u73b0\u4e86\u63a5\u53e3\u3002<\/p>\n<p>\u5728\u7ed9\u5b9a\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cError \u662f\u4e00\u4e2a\u63a5\u53e3\uff0c_Error \u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\uff0c\u8bed\u6cd5 _ Error = (*_Error)(nil) \u8868\u793a\uff1a<\/p>\n<ul>\n<li>var _ Error = (*_Error) \u8868\u660e _Error \u5b9e\u73b0\u4e86 Error \u63a5\u53e3\u3002<\/li>\n<li>(nil) \u5f3a\u5236\u5c06 _Error \u7684\u503c\u8f6c\u6362\u4e3a Error \u7c7b\u578b\u3002\u8be5\u5f3a\u5236\u8f6c\u6362\u662f\u4e3a\u4e86\u521b\u5efa\u4e00\u4e2a\u503c\u4e3a nil \u7684 Error \u63a5\u53e3\u7c7b\u578b\u53d8\u91cf\u3002<\/li>\n<\/ul>\n<p>nil \u503c\u7ecf\u5e38\u7528\u4e8e\u8868\u793a\u7a7a\u6216\u672a\u521d\u59cb\u5316\u7684\u6307\u9488\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5b83\u4f5c\u4e3a\u4e00\u79cd\u5360\u4f4d\u7b26\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa Error \u63a5\u53e3\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u8be5\u53d8\u91cf\u6ca1\u6709\u5b9e\u9645\u5173\u8054\u7684\u7ed3\u6784\u4f53\u5b9e\u4f8b\u3002\u8fd9\u5141\u8bb8\u7f16\u8bd1\u5668\u5728\u8fd0\u884c\u65f6\u68c0\u67e5 _Error \u662f\u5426\u6b63\u786e\u5b9e\u73b0\u4e86 Error \u63a5\u53e3\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8be5\u8bed\u6cd5\u53ea\u7528\u4e8e\u7f16\u8bd1\u65f6\u68c0\u67e5\u63a5\u53e3\u5b9e\u73b0\u3002\u5b83\u5e76\u4e0d\u610f\u5473\u7740 _Error \u7ed3\u6784\u4f53\u5b9e\u9645\u4e0a\u5305\u542b nil \u503c\u3002\u5b83\u53ea\u662f\u4e00\u79cd\u5f3a\u5236\u8f6c\u6362\u673a\u5236\uff0c\u7528\u4e8e\u5728\u7f16\u8bd1\u65f6\u9a8c\u8bc1\u63a5\u53e3\u5b9e\u73b0\u3002<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aGo \u8bed\u8a00\u4e2d _ Error = (*_Error)(nil) \u8bed\u6cd5\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u7d22\u5f15\u5982\u4f55\u5c06\u968f\u673a I\/O \u8f6c\u5316\u4e3a\u987a\u5e8f I\/O\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   SpringBoot2 \u4e2d\u5982\u4f55\u4f7f\u7528 Log4j2 \u52a8\u6001\u8bb0\u5f55\u65e5\u5fd7\u5e76\u6839\u636e API \u63a5\u53e3\u8def\u5f84\u4fdd\u5b58\u5230\u5bf9\u5e94\u8def\u5f84\u7684\u6587\u4ef6\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd&#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-205966","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205966","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=205966"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205966\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}