{"id":206360,"date":"2025-06-12T08:48:49","date_gmt":"2025-06-12T00:48:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206360\/"},"modified":"2025-06-12T08:48:49","modified_gmt":"2025-06-12T00:48:49","slug":"golang-%e4%b8%ad%e4%bd%bf%e7%94%a8-mysql-%e5%92%8c-gin-%e6%97%b6%ef%bc%8c%e9%81%87%e5%88%b0-panic-%e6%8a%a5%e9%94%99-runtime-error-invalid-memory-address-or-nil-pointer-dereference-%e5%a6%82","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206360\/","title":{"rendered":"Golang \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0
\n\u300aGOLANG \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01,
\n,
\ngolang mysql gin \u62a5\u9519\u65f6\u5904\u7406\u65b9\u6cd5<\/strong>,\u5728\u4f7f\u7528 golang\u3001mysql \u548c gin \u65f6\uff0c\u60a8\u9047\u5230\u5982\u4e0b panic \u62a5\u9519\uff1a,\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u901a\u5e38\u662f\u56e0\u4e3a prepare \u9636\u6bb5\u62ff\u5230\u7684 stmt \u5728\u5173\u95ed\u540e\u4ecd\u7136\u5728\u4f7f\u7528\u3002,
\n\u89e3\u51b3\u65b9\u6cd5\uff1a<\/strong>,\u5728 golang \u4e2d\uff0c\u4f7f\u7528 mysql \u65f6\uff0c\u5728\u6267\u884c\u67e5\u8be2\u524d\u5fc5\u987b\u8c03\u7528 stmt.prepare() \u521d\u59cb\u5316 sql \u8bed\u53e5\uff0c\u7136\u540e\u624d\u80fd\u4f7f\u7528 stmt.exec() \u6267\u884c\u67e5\u8be2\u3002,\u5728\u4f7f\u7528\u5b8c stmt \u540e\uff0c\u5fc5\u987b\u8c03\u7528 stmt.close() \u5173\u95ed\u5b83\uff0c\u4ee5\u91ca\u653e\u8d44\u6e90\u3002,\u5982\u679c\u60a8\u5728\u672a\u4f7f\u7528 stmt \u65f6\u5173\u95ed\u4e86\u5b83\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e0a\u8ff0 panic \u9519\u8bef\u3002,
\n\u5efa\u8bae\uff1a<\/strong>,\u672c\u7bc7\u5173\u4e8e\u300aGOLANG \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8eGOLANG\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff01,\u5b9a\u671f\u68c0\u67e5\u8fde\u63a5\u6c60\u4ee5\u786e\u4fdd\u6ca1\u6709\u6cc4\u6f0f\u7684\u8fde\u63a5\u3002,\u5728\u4f7f\u7528 stmt \u65f6\uff0c\u59cb\u7ec8\u4f7f\u7528 defer \u8bed\u53e5\u5728\u51fd\u6570\u8fd4\u56de\u524d\u81ea\u52a8\u5173\u95ed\u5b83\u3002,golang mysql gin \u62a5\u9519\u65f6\u5904\u7406\u65b9\u6cd5,\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0
\n\u300aGOLANG \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> GOLANG \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f<\/span><\/p>\n

GOLANG \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f<\/h1>\n

2024-11-10 17:00:56<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300aGOLANG \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n

<\/p>\n

golang mysql gin \u62a5\u9519\u65f6\u5904\u7406\u65b9\u6cd5<\/strong><\/p>\n

\u5728\u4f7f\u7528 golang\u3001mysql \u548c gin \u65f6\uff0c\u60a8\u9047\u5230\u5982\u4e0b panic \u62a5\u9519\uff1a<\/p>\n

panic recovered:\nruntime error: invalid memory address or nil pointer dereference\n\/snap\/go\/8489\/src\/runtime\/panic.go:221 (0x44a446)\n        panicmem: panic(memoryerror)<\/pre>\n
\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u901a\u5e38\u662f\u56e0\u4e3a prepare \u9636\u6bb5\u62ff\u5230\u7684 stmt \u5728\u5173\u95ed\u540e\u4ecd\u7136\u5728\u4f7f\u7528\u3002<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\uff1a<\/strong><\/p>\n
\u5728 golang \u4e2d\uff0c\u4f7f\u7528 mysql \u65f6\uff0c\u5728\u6267\u884c\u67e5\u8be2\u524d\u5fc5\u987b\u8c03\u7528 stmt.prepare() \u521d\u59cb\u5316 sql \u8bed\u53e5\uff0c\u7136\u540e\u624d\u80fd\u4f7f\u7528 stmt.exec() \u6267\u884c\u67e5\u8be2\u3002<\/p>\n
stmt, err := db.prepare(\"select * from users where id = ?\")\nif err != nil {\n    \/\/ \u5904\u7406\u9519\u8bef\n}\n\nrow := stmt.queryrow(id)\n\n\/\/ ...<\/pre>\n
\u5728\u4f7f\u7528\u5b8c stmt \u540e\uff0c\u5fc5\u987b\u8c03\u7528 stmt.close() \u5173\u95ed\u5b83\uff0c\u4ee5\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n
defer stmt.Close()<\/pre>\n
\u5982\u679c\u60a8\u5728\u672a\u4f7f\u7528 stmt \u65f6\u5173\u95ed\u4e86\u5b83\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e0a\u8ff0 panic \u9519\u8bef\u3002<\/p>\n
\u5efa\u8bae\uff1a<\/strong><\/p>\n
    \n
  • \u5728\u4f7f\u7528 stmt \u65f6\uff0c\u59cb\u7ec8\u4f7f\u7528 defer \u8bed\u53e5\u5728\u51fd\u6570\u8fd4\u56de\u524d\u81ea\u52a8\u5173\u95ed\u5b83\u3002<\/li>\n
  • \u5b9a\u671f\u68c0\u67e5\u8fde\u63a5\u6c60\u4ee5\u786e\u4fdd\u6ca1\u6709\u6cc4\u6f0f\u7684\u8fde\u63a5\u3002<\/li>\n<\/ul>\n
    \u672c\u7bc7\u5173\u4e8e\u300aGOLANG \u4e2d\u4f7f\u7528 MySQL \u548c Gin \u65f6\uff0c\u9047\u5230 panic \u62a5\u9519 \\”runtime error: invalid memory address or nil pointer dereference\\” \u5982\u4f55\u89e3\u51b3\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8eGOLANG\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff01<\/p>\n
    \n
    \n <\/dt>\n
    \n   \u5982\u4f55\u4f7f\u7528 CSS \u5b9e\u73b0\u7ebf\u6027\u6e10\u53d8\u6548\u679c\uff1f\n <\/dd>\n<\/dl>\n
    \n
    \n <\/dt>\n
    \n   MySQL \u5b58\u50a8\u8fc7\u7a0b\u53c2\u6570\u62a5\u9519\uff1a”Unknown column ‘\u738b\u5c0f\u674e’ in ‘field list'”\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    \u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9...<\/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-206360","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206360","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=206360"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206360\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}