{"id":207730,"date":"2025-07-08T09:39:23","date_gmt":"2025-07-08T01:39:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207730\/"},"modified":"2025-07-08T09:39:23","modified_gmt":"2025-07-08T01:39:23","slug":"%e6%88%91%e5%8f%af%e4%bb%a5%e4%bd%bf%e7%94%a8%e6%8c%87%e5%90%91%e9%94%99%e8%af%af%e7%9a%84%e6%8c%87%e9%92%88%e6%9d%a5%e6%8d%95%e8%8e%b7%e8%bf%94%e5%9b%9e%e9%94%99%e8%af%af%e5%90%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207730\/","title":{"rendered":"\u6211\u53ef\u4ee5\u4f7f\u7528\u6307\u5411\u201c\u9519\u8bef\u201d\u7684\u6307\u9488\u6765\u6355\u83b7\u8fd4\u56de\u9519\u8bef\u5417\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u6211\u53ef\u4ee5\u4f7f\u7528\u6307\u5411\u201c\u9519\u8bef\u201d\u7684\u6307\u9488\u6765\u6355\u83b7\u8fd4\u56de\u9519\u8bef\u5417\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-25 09:09:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

Golang\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300a\u6211\u53ef\u4ee5\u4f7f\u7528\u6307\u5411\u201c\u9519\u8bef\u201d\u7684\u6307\u9488\u6765\u6355\u83b7\u8fd4\u56de\u9519\u8bef\u5417\uff1f\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6b63\u5728\u7f16\u5199\u4e00\u4e9b\u4e8b\u52a1\u5f00\u59cb\/\u63d0\u4ea4\/\u56de\u6eda\u51fd\u6570\uff0c\u6211\u60f3\u5c06\u5757\u914d\u5bf9\u4ee5\u9632\u6b62\u5fd8\u8bb0\u63d0\u4ea4<\/p>\n

\u6211\u662f\u8fd9\u6837\u5199\u7684\uff1a<\/p>\n

\nfunc (foo *foo) bar() (err error) {\n\n  foo.begin()\n  defer foo.end(&err)\n\n  \/\/some business code\n\n  return\n}\n\nfunc (foo *foo) end(eptr *error) {\n  \/\/ if recover\n  if r := recover(); r != nil {\n    debug.printstack()\n    *eptr = r.(error)\n  }\n\n  var err = *eptr\n  if err != nil {\n    foo.rollback()\n  } else {\n    foo.commit()\n  }\n}\n\n<\/pre>\n
\u5b83\u53ef\u4ee5\u5de5\u4f5c\uff0c\u4f46\u5b83\u4f7f\u7528\u201c\u63a5\u53e3\u6307\u9488\u201d\uff0c\u6211\u627e\u4e0d\u5230\u6709\u5173\u63a5\u53e3\u6307\u9488\u7684\u89c4\u8303\u3002<\/p>\n
\u6240\u4ee5\uff0c\u6211\u4e0d\u786e\u5b9a\u8fd9\u6bb5\u4ee3\u7801\u662f\u5426\u8db3\u591f\u597d\u3002\u60a8\u80fd\u7ed9\u4e00\u4e9b\u5efa\u8bae\u5417\uff1f<\/p>\n
\u611f\u8c22 teyzer \u548c corey ogburn\uff0c\u8fd9\u662f\u6211\u7684\u56fa\u5b9a\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n
\nfunc (foo *Foo) Bar() (err error) {\n\n  foo.Begin()\n  defer func() { foo.End(err) }()\n  defer func() {\n   if r := recover(); r != nil {\n      debug.PrintStack()\n      err = makeError(r)\n   }\n  } ()\n\n  \/\/some business code\n\n  return\n}\n\nfunc (foo *Foo) End(err error) {  \n  if err != nil {\n    foo.Rollback()\n  } else {\n    foo.Commit()\n  }\n}\n\n<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u5f53\u5230\u8fbe defer<\/code> \u65f6\uff0c\u7acb\u5373\u8bc4\u4f30\u5ef6\u8fdf\u51fd\u6570\u7684\u53c2\u6570\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5982\u679c\u60a8\u63a8\u8fdf end<\/code> \u672c\u8eab\uff0c\u5219\u5fc5\u987b\u4f7f\u7528\u6307\u9488\u3002<\/p>\n
\u76f8\u53cd\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u95ed\u5305\u3002\u60a8\u7684 bar()<\/code> \u51fd\u6570\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\nfunc (foo *Foo) Bar() (err error) {\n    foo.Begin()\n    defer func() { foo.End(err) }()\n    \/\/some business code\n    return\n}\n\n<\/pre>\n
\u6b64\u5904\uff0c\u4e00\u65e6\u6267\u884c\u5ef6\u8fdf\u95ed\u5305\uff0c\u5c31\u4f1a\u8bc4\u4f30 err<\/code> \u7684\u503c\u3002<\/p>\n
\u5982\u679c\u60a8\u4e0d\u575a\u6301\u4f7f\u7528\u9519\u8bef\u8fd4\u56de\uff0c\u90a3\u4e48\u5728 go \u4e2d\u4f7f\u7528\u6050\u614c\u548c\u6062\u590d\u662f\u5904\u7406\u6b64\u7c7b\u9700\u8981\u56de\u6eda\u7684\u9519\u8bef\u7684\u66f4\u60ef\u7528\u7684\u65b9\u6cd5\uff08\u5c31\u50cf corey ogburn \u63a8\u8350\u7684\u90a3\u6837\uff09\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u300a\u6211\u53ef\u4ee5\u4f7f\u7528\u6307\u5411\u201c\u9519\u8bef\u201d\u7684\u6307\u9488\u6765\u6355\u83b7\u8fd4\u56de\u9519\u8bef\u5417\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-207730","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207730","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=207730"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207730\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}