{"id":10006481,"date":"2022-09-14T23:16:49","date_gmt":"2022-09-14T15:16:49","guid":{"rendered":"https:\/\/ityet.com\/?p=10006481"},"modified":"2022-09-14T23:16:49","modified_gmt":"2022-09-14T15:16:49","slug":"%e9%9d%a2%e8%af%95%e7%aa%81%e5%87%bb83%ef%bc%9a%e4%bb%80%e4%b9%88%e6%83%85%e5%86%b5%e4%bc%9a%e5%af%bc%e8%87%b4transactional%e4%ba%8b%e5%8a%a1%e5%a4%b1%e6%95%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006481","title":{"rendered":"\u9762\u8bd5\u7a81\u51fb83\uff1a\u4ec0\u4e48\u60c5\u51b5\u4f1a\u5bfc\u81f4@Transactional\u4e8b\u52a1\u5931\u6548\uff1f"},"content":{"rendered":"<p>\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\u4e0d\u53ef\u80fd\u6ca1\u6709\u4e8b\u52a1\uff0c\u800c Spring \u4e2d\uff0c\u4e8b\u52a1\u7684\u5b9e\u73b0\u65b9\u5f0f\u5206\u4e3a\u4e24\u79cd\uff1a\u7f16\u7a0b\u5f0f\u4e8b\u52a1\u548c\u58f0\u660e\u5f0f\u4e8b\u52a1\uff0c\u53c8\u56e0\u4e3a\u7f16\u7a0b\u5f0f\u4e8b\u52a1\u5b9e\u73b0\u76f8\u5bf9\u9ebb\u70e6\uff0c\u800c\u58f0\u660e\u5f0f\u4e8b\u52a1\u5b9e\u73b0\u6781\u5176\u7b80\u5355\uff0c\u6240\u4ee5\u5728\u65e5\u5e38\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u90fd\u4f1a\u4f7f\u7528\u58f0\u660e\u5f0f\u4e8b\u52a1 @Transactional \u6765\u5b9e\u73b0\u4e8b\u52a1\u3002<\/p>\n<p>@Transactional \u4f7f\u7528\u6781\u5176\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5728\u7c7b\u4e0a\u6216\u65b9\u6cd5\u4e0a\u6dfb\u52a0 @Transactional \u5173\u952e\u5b57\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u4e8b\u52a1\u7684\u81ea\u52a8\u5f00\u542f\u3001\u63d0\u4ea4\u6216\u56de\u6eda\u4e86\uff0c\u5b83\u7684\u57fa\u7840\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">@Transactional \n@RequestMapping(&quot;\/add&quot;)\npublic int add(UserInfo userInfo) {\n    int result = userService.add(userInfo);\n    return result;\n}<\/code><\/pre>\n<h4>@Transactional \u6267\u884c\u6d41\u7a0b<\/h4>\n<p><strong>@Transactional \u4f1a\u5728\u65b9\u6cd5\u6267\u884c\u524d\uff0c\u4f1a\u81ea\u52a8\u5f00\u542f\u4e8b\u52a1\uff1b\u5728\u65b9\u6cd5\u6210\u529f\u6267\u884c\u5b8c\uff0c\u4f1a\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\uff1b\u5982\u679c\u65b9\u6cd5\u5728\u6267\u884c\u671f\u95f4\uff0c\u51fa\u73b0\u4e86\u5f02\u5e38\uff0c\u90a3\u4e48\u5b83\u4f1a\u81ea\u52a8\u56de\u6eda\u4e8b\u52a1\u3002<\/strong><\/p>\n<p>\u7136\u800c\uff0c\u5c31\u662f\u770b\u8d77\u6765\u6781\u5176\u7b80\u5355\u7684 @Transactional\uff0c\u5374\u9690\u85cf\u7740\u4e00\u4e9b\u201c\u5751\u201d\uff0c\u8fd9\u4e9b\u5751\u5c31\u662f\u6211\u4eec\u4eca\u5929\u8981\u8bb2\u7684\u4e3b\u9898\uff1a\u5bfc\u81f4 @Transactional \u4e8b\u52a1\u5931\u6548\u7684\u5e38\u89c1\u573a\u666f\u6709\u54ea\u4e9b\uff1f<\/p>\n<p>\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u8981\u660e\u786e\u4e00\u4e2a\u5b9a\u4e49\uff0c\u4ec0\u4e48\u53eb\u505a\u201c\u5931\u6548\u201d\uff1f<\/p>\n<p>\u672c\u6587\u4e2d\u7684\u201c\u5931\u6548\u201d\u6307\u7684\u662f\u201c<strong>\u5931\u53bb\uff08\u5b83\u7684\uff09\u529f\u6548<\/strong>\u201d\uff0c\u4e5f\u5c31\u662f\u5f53 @Transactional \u4e0d\u7b26\u5408\u6211\u4eec\u9884\u671f\u7684\u7ed3\u679c\u65f6\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u8bf4 @Transactional \u5931\u6548\u4e86\u3002<\/p>\n<p>\u90a3 @Transactional \u5931\u6548\u7684\u573a\u666f\u6709\u54ea\u4e9b\u5462\uff1f\u63a5\u4e0b\u6765\u6211\u4eec\u4e00\u4e00\u6765\u770b\u3002<\/p>\n<h2>1.\u975e public \u4fee\u9970\u7684\u65b9\u6cd5<\/h2>\n<p><strong>\u5f53 @Transactional \u4fee\u9970\u7684\u65b9\u6cd5\u4e3a\u975e public \u65f6\uff0c\u4e8b\u52a1\u5c31\u5931\u6548\u4e86<\/strong>\uff0c\u6bd4\u5982\u4ee5\u4e0b\u4ee3\u7801\u5f53\u9047\u5230\u5f02\u5e38\u4e4b\u540e\uff0c\u4e0d\u80fd\u81ea\u52a8\u5b9e\u73b0\u56de\u6eda\uff1a<\/p>\n<pre><code class=\"java\">@RequestMapping(&quot;\/save&quot;)\nint save(UserInfo userInfo) {\n    \/\/ \u975e\u7a7a\u6548\u9a8c\n    if (userInfo == null ||\n        !StringUtils.hasLength(userInfo.getUsername()) ||\n        !StringUtils.hasLength(userInfo.getPassword()))\n        return 0;\n    \/\/ \u6267\u884c\u6dfb\u52a0\u64cd\u4f5c\n    int result = userService.save(userInfo);\n    System.out.println(&quot;add \u53d7\u5f71\u54cd\u7684\u884c\u6570\uff1a&quot; + result);\n    int num = 10 \/ 0; \/\/ \u6b64\u5904\u8bbe\u7f6e\u4e00\u4e2a\u5f02\u5e38\n    return result;\n}<\/code><\/pre>\n<p>\u4ee5\u4e0a\u7a0b\u5e8f\u7684\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481008\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/><strong>\u5f53\u7a0b\u5e8f\u51fa\u73b0\u8fd0\u884c\u65f6\u5f02\u5e38\u65f6\uff0c\u6211\u4eec\u9884\u671f\u7684\u7ed3\u679c\u662f\u4e8b\u52a1\u5e94\u8be5\u5b9e\u73b0\u81ea\u52a8\u56de\u6eda\uff0c\u4e5f\u5c31\u662f\u6dfb\u52a0\u7528\u6237\u5931\u8d25\uff0c\u7136\u800c\u5f53\u6211\u4eec\u67e5\u8be2\u6570\u636e\u5e93\u65f6\uff0c\u5374\u53d1\u73b0\u4e8b\u52a1\u5e76\u672a\u6267\u884c\u56de\u6eda\u64cd\u4f5c<\/strong>\uff0c\u6570\u636e\u5e93\u7684\u6570\u636e\u5982\u4e0b\u56fe\u6240\u793a\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481009\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<h2>2.timeout \u8d85\u65f6<\/h2>\n<p><strong>\u5f53\u5728 @Transactional \u4e0a\uff0c\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u8f83\u5c0f\u7684\u8d85\u65f6\u65f6\u95f4\u65f6\uff0c\u5982\u679c\u65b9\u6cd5\u672c\u8eab\u7684\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u4e86\u8bbe\u7f6e\u7684 timeout \u8d85\u65f6\u65f6\u95f4\uff0c\u90a3\u4e48\u5c31\u4f1a\u5bfc\u81f4\u672c\u6765\u5e94\u8be5\u6b63\u5e38\u63d2\u5165\u6570\u636e\u7684\u65b9\u6cd5\u6267\u884c\u5931\u8d25<\/strong>\uff0c\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">@Transactional(timeout = 3) \/\/ \u8d85\u65f6\u65f6\u95f4\u4e3a 3s\n@RequestMapping(&quot;\/save&quot;)\nint save(UserInfo userInfo) throws InterruptedException {\n    \/\/ \u975e\u7a7a\u6548\u9a8c\n    if (userInfo == null ||\n        !StringUtils.hasLength(userInfo.getUsername()) ||\n        !StringUtils.hasLength(userInfo.getPassword()))\n        return 0;\n    int result = userService.save(userInfo);\n    return result;\n}<\/code><\/pre>\n<p>UserService \u7684 save \u65b9\u6cd5\u5b9e\u73b0\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">public int save(UserInfo userInfo) throws InterruptedException {\n    \/\/ \u4f11\u7720 5s\n    TimeUnit.SECONDS.sleep(5);\n    int result = userMapper.add(userInfo);\n    return result;\n}<\/code><\/pre>\n<p>\u4ee5\u4e0a\u7a0b\u5e8f\u7684\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481010\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u6570\u636e\u5e93\u6ca1\u6709\u6b63\u786e\u7684\u63d2\u5165\u6570\u636e\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481011\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<h2>3.\u4ee3\u7801\u4e2d\u6709 try\/catch<\/h2>\n<p>\u5728\u524d\u9762 @Transactional \u7684\u6267\u884c\u6d41\u7a0b\u4e2d\uff0c\u6211\u4eec\u63d0\u5230\uff1a\u5f53\u65b9\u6cd5\u4e2d\u51fa\u73b0\u4e86\u5f02\u5e38\u4e4b\u540e\uff0c\u4e8b\u52a1\u4f1a\u81ea\u52a8\u56de\u6eda\u3002\u7136\u800c\uff0c\u5982\u679c\u5728\u7a0b\u5e8f\u4e2d\u52a0\u4e86 try\/catch \u4e4b\u540e\uff0c@Transactional \u5c31\u4e0d\u4f1a\u81ea\u52a8\u56de\u6eda\u4e8b\u52a1\u4e86\uff0c\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">@Transactional\n@RequestMapping(&quot;\/save&quot;)\npublic int save(UserInfo userInfo) throws InterruptedException {\n    \/\/ \u975e\u7a7a\u6548\u9a8c\n    if (userInfo == null ||\n        !StringUtils.hasLength(userInfo.getUsername()) ||\n        !StringUtils.hasLength(userInfo.getPassword()))\n        return 0;\n    int result = userService.save(userInfo);\n    try {\n        int num = 10 \/ 0; \/\/ \u6b64\u5904\u8bbe\u7f6e\u4e00\u4e2a\u5f02\u5e38\n    } catch (Exception e) {\n    }\n    return result;\n}<\/code><\/pre>\n<p>\u4ee5\u4e0a\u7a0b\u5e8f\u7684\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481012\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u6b64\u65f6\uff0c\u67e5\u8be2\u6570\u636e\u5e93\u6211\u4eec\u53d1\u73b0\uff0c<strong>\u7a0b\u5e8f\u5e76\u6ca1\u6709\u6267\u884c\u56de\u6eda\u64cd\u4f5c<\/strong>\uff0c\u6570\u636e\u5e93\u4e2d\u88ab\u6210\u529f\u7684\u6dfb\u52a0\u4e86\u4e00\u6761\u6570\u636e\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481013\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<h2>4.\u8c03\u7528\u7c7b\u5185\u90e8 @Transactional \u65b9\u6cd5<\/h2>\n<p>\u5f53\u8c03\u7528\u7c7b\u5185\u90e8\u7684 @Transactional \u4fee\u9970\u7684\u65b9\u6cd5\u65f6\uff0c\u4e8b\u52a1\u662f\u4e0d\u4f1a\u751f\u6548\u7684\uff0c\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"java\">@RequestMapping(&quot;\/save&quot;)\npublic int saveMappping(UserInfo userInfo) {\n    return save(userInfo);\n}\n@Transactional\npublic int save(UserInfo userInfo) {\n    \/\/ \u975e\u7a7a\u6548\u9a8c\n    if (userInfo == null ||\n        !StringUtils.hasLength(userInfo.getUsername()) ||\n        !StringUtils.hasLength(userInfo.getPassword()))\n        return 0;\n    int result = userService.save(userInfo);\n    int num = 10 \/ 0; \/\/ \u6b64\u5904\u8bbe\u7f6e\u4e00\u4e2a\u5f02\u5e38\n    return result;\n}<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u6211\u4eec\u5728\u6dfb\u52a0\u65b9\u6cd5 save \u4e2d\u6dfb\u52a0\u4e86 @Transactional \u58f0\u660e\u5f0f\u4e8b\u52a1\uff0c\u5e76\u4e14\u6dfb\u52a0\u4e86\u5f02\u5e38\u4ee3\u7801\uff0c<strong>\u6211\u4eec\u9884\u671f\u7684\u7ed3\u679c\u662f\u7a0b\u5e8f\u51fa\u73b0\u5f02\u5e38\uff0c\u4e8b\u52a1\u8fdb\u884c\u81ea\u52a8\u56de\u6eda<\/strong>\uff0c\u4ee5\u4e0a\u7a0b\u5e8f\u7684\u6267\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481014\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><br \/>\u7136\u800c\uff0c\u5f53\u6211\u4eec\u67e5\u8be2\u6570\u636e\u5e93\u65f6\u53d1\u73b0\uff0c\u7a0b\u5e8f\u6267\u884c\u5e76\u4e0d\u7b26\u5408\u6211\u4eec\u7684\u9884\u671f\uff0c\u6dfb\u52a0\u7684\u6570\u636e\u5e76\u6ca1\u6709\u8fdb\u884c\u81ea\u52a8\u56de\u6eda\u64cd\u4f5c\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042481015\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<h2>5.\u6570\u636e\u5e93\u4e0d\u652f\u6301\u4e8b\u52a1<\/h2>\n<p>\u6211\u4eec\u7a0b\u5e8f\u4e2d\u7684 @Transactional \u53ea\u662f\u7ed9\u8c03\u7528\u7684\u6570\u636e\u5e93\u53d1\u9001\u4e86\uff1a\u5f00\u59cb\u4e8b\u52a1\u3001\u63d0\u4ea4\u4e8b\u52a1\u3001\u56de\u6eda\u4e8b\u52a1\u7684\u6307\u4ee4\uff0c\u4f46\u662f\u5982\u679c\u6570\u636e\u5e93\u672c\u8eab\u4e0d\u652f\u6301\u4e8b\u52a1\uff0c\u6bd4\u5982 MySQL \u4e2d\u8bbe\u7f6e\u4e86\u4f7f\u7528 MyISAM \u5f15\u64ce\uff0c\u90a3\u4e48\u5b83\u672c\u8eab\u662f\u4e0d\u652f\u6301\u4e8b\u52a1\u7684\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5373\u4f7f\u5728\u7a0b\u5e8f\u4e2d\u6dfb\u52a0\u4e86 @Transactional \u6ce8\u89e3\uff0c\u90a3\u4e48\u4f9d\u7136\u4e0d\u4f1a\u6709\u4e8b\u52a1\u7684\u884c\u4e3a\uff0c\u8fd9\u5c31\u662f\u5de7\u5987\u4e5f\u96be\u4e3a\u65e0\u7c73\u4e4b\u708a\u5427\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u5f53\u58f0\u660e\u5f0f\u4e8b\u52a1 @Transactional \u9047\u5230\u4ee5\u4e0b\u573a\u666f\u65f6\uff0c\u4e8b\u52a1\u4f1a\u5931\u6548\uff1a<\/p>\n<ol>\n<li>\u975e public \u4fee\u9970\u7684\u65b9\u6cd5\uff1b<\/li>\n<li>timeout \u8bbe\u7f6e\u8fc7\u5c0f\uff1b<\/li>\n<li>\u4ee3\u7801\u4e2d\u4f7f\u7528 try\/catch \u5904\u7406\u5f02\u5e38\uff1b<\/li>\n<li>\u8c03\u7528\u7c7b\u5185\u90e8 @Transactional \u65b9\u6cd5\uff1b<\/li>\n<li>\u6570\u636e\u5e93\u4e0d\u652f\u6301\u4e8b\u52a1\u3002<\/li>\n<\/ol>\n<h4>\u53c2\u8003 &#038; \u9e23\u8c22<\/h4>\n<p>www.cnblogs.com\/frankyou\/p\/12691463.html<\/p>\n<blockquote>\n<p>\u662f\u975e\u5ba1\u4e4b\u4e8e\u5df1\uff0c\u6bc1\u8a89\u542c\u4e4b\u4e8e\u4eba\uff0c\u5f97\u5931\u5b89\u4e4b\u4e8e\u6570\u3002<\/p>\n<p>\u516c\u4f17\u53f7\uff1aJava\u9762\u8bd5\u771f\u9898\u89e3\u6790<\/p>\n<p>\u9762\u8bd5\u5408\u96c6\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=HIqhfBc%2B9vxOuj3VlxMVUQ%3D%3D.lBUeq052KsRC70%2Bu2GAbrPLvhCyNvE87Ekyl7w9kz%2Bxl8y9YsSqq5snd%2BnPMbr3D\" rel=\"nofollow\">https:\/\/gitee.com\/mydb\/interview<\/a><\/p>\n<\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042481006\">https:\/\/segmentfault.com\/a\/1190000042481006<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\u4e0d\u53ef\u80fd\u6ca1\u6709\u4e8b\u52a1\uff0c\u800c Spring \u4e2d\uff0c\u4e8b\u52a1\u7684\u5b9e\u73b0\u65b9\u5f0f\u5206\u4e3a\u4e24\u79cd\uff1a\u7f16\u7a0b\u5f0f\u4e8b\u52a1\u548c\u58f0\u660e\u5f0f\u4e8b\u52a1\uff0c\u53c8\u56e0\u4e3a\u7f16\u7a0b\u5f0f\u4e8b [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006481","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006481","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006481"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006481\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}