{"id":2937,"date":"2023-07-14T15:30:35","date_gmt":"2023-07-14T07:30:35","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=2937"},"modified":"2023-07-14T15:30:35","modified_gmt":"2023-07-14T07:30:35","slug":"springboot-%e4%b8%ad%e7%9a%84%e5%a4%9a%e7%ba%bf%e7%a8%8b%e4%ba%8b%e5%8a%a1%e5%a4%84%e7%90%86%e5%a4%aa%e7%b9%81%e7%90%90%ef%bc%9f%e4%b8%80%e4%b8%aa%e8%87%aa%e5%ae%9a%e4%b9%89%e6%b3%a8%e8%a7%a3%e7%9b%b4","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/spring\/springboot-%e4%b8%ad%e7%9a%84%e5%a4%9a%e7%ba%bf%e7%a8%8b%e4%ba%8b%e5%8a%a1%e5%a4%84%e7%90%86%e5%a4%aa%e7%b9%81%e7%90%90%ef%bc%9f%e4%b8%80%e4%b8%aa%e8%87%aa%e5%ae%9a%e4%b9%89%e6%b3%a8%e8%a7%a3%e7%9b%b4\/","title":{"rendered":"SpringBoot \u4e2d\u7684\u591a\u7ebf\u7a0b\u4e8b\u52a1\u5904\u7406\u592a\u7e41\u7410\uff1f\u4e00\u4e2a\u81ea\u5b9a\u4e49\u6ce8\u89e3\u76f4\u63a5\u641e\u5b9a\uff01"},"content":{"rendered":"
\n

<\/span>\u524d\u8a00<\/span><\/h3>\n

\u6211\u4eec\u5f00\u53d1\u7684\u65f6\u5019\u5e38\u5e38\u4f1a\u9047\u5230\u591a\u7ebf\u7a0b\u4e8b\u52a1\u7684\u95ee\u9898\u3002\u4ee5\u4e3a\u6dfb\u52a0\u4e86@Transactional<\/code>\u6ce8\u89e3\u5c31\u884c\u4e86\uff0c\u5176\u5b9e\u4f60\u52a0\u4e86\u6ce8\u89e3\u4e4b\u540e\u4f1a\u53d1\u73b0\u4e8b\u52a1\u5931\u6548\u3002<\/p>\n

\u539f\u56e0\uff1a\u6570\u636e\u5e93\u8fde\u63a5spring\u662f\u653e\u5728threadLocal\u91cc\u9762\uff0c\u591a\u7ebf\u7a0b\u573a\u666f\u4e0b\uff0c\u62ff\u5230\u7684\u6570\u636e\u5e93\u8fde\u63a5\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u5373\u662f\u5c5e\u4e8e\u4e0d\u540c\u4e8b\u52a1\u3002<\/p>\n

\u672c\u6587\u662f\u57fa\u4e8espringboot\u7684@Async<\/code>\u6ce8\u89e3\u5f00\u542f\u591a\u7ebf\u7a0b,\uff0c\u5e76\u901a\u8fc7\u81ea\u5b9a\u4e49\u6ce8\u89e3\u548cAOP\u5b9e\u73b0\u7684\u591a\u7ebf\u7a0b\u4e8b\u52a1\uff0c\u907f\u514d\u7e41\u7410\u7684\u624b\u52a8\u63d0\u4ea4\/\u56de\u6eda\u4e8b\u52a1  (CV\u5373\u7528\u3001\u53c2\u6570\u9f50\u5168\u3001\u65e0\u9700\u914d\u7f6e)<\/p>\n

<\/span>\u4e00\u3001springboot\u591a\u7ebf\u7a0b(\u58f0\u660e\u5f0f)\u7684\u4f7f\u7528\u65b9\u6cd5\uff1f<\/span><\/h3>\n

1\u3001springboot\u63d0\u4f9b\u4e86\u6ce8\u89e3@Async<\/code>\u6765\u4f7f\u7528\u7ebf\u7a0b\u6c60\uff0c\u5177\u4f53\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b:<\/p>\n

(1) \u5728\u542f\u52a8\u7c7b(\u914d\u7f6e\u7c7b)\u6dfb\u52a0@EnableAsync<\/code>\u6765\u5f00\u542f\u7ebf\u7a0b\u6c60<\/p>\n

(2) \u5728\u9700\u8981\u5f00\u542f\u5b50\u7ebf\u7a0b\u7684\u65b9\u6cd5\u4e0a\u6dfb\u52a0\u6ce8\u89e3@Async<\/code><\/p>\n

\n

\u6ce8\u610f: \u6846\u67b6\u9ed8\u8ba4 ----->   \u6765\u4e00\u4e2a\u8bf7\u6c42\u5f00\u542f\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5728\u9ad8\u5e76\u53d1\u4e0b\u5bb9\u6613\u5185\u5b58\u6ea2\u51fa<\/p>\n<\/blockquote>\n

\u6240\u4ee5\u4f7f\u7528\u65f6\u9700\u8981\u914d\u7f6e\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u6c60\uff0c\u5982\u4e0b:<\/p>\n

<\/span>@Configuration<\/span>\n@EnableAsync<\/span>\npublic<\/span> class<\/span> ThreadPoolTaskConfig<\/span> <\/span>{\n \n    @Bean<\/span>(\"threadPoolTaskExecutor\"<\/span>)\/\/\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u6c60\u540d\u79f0<\/span>\n    public<\/span> ThreadPoolTaskExecutor threadPoolTaskExecutor<\/span>()<\/span> <\/span>{\n \n        ThreadPoolTaskExecutor executor = new<\/span> ThreadPoolTaskExecutor();\n \n        \/\/\u7ebf\u7a0b\u6c60\u521b\u5efa\u7684\u6838\u5fc3\u7ebf\u7a0b\u6570\uff0c\u7ebf\u7a0b\u6c60\u7ef4\u62a4\u7ebf\u7a0b\u7684\u6700\u5c11\u6570\u91cf\uff0c\u5373\u4f7f\u6ca1\u6709\u4efb\u52a1\u9700\u8981\u6267\u884c\uff0c\u4e5f\u4f1a\u4e00\u76f4\u5b58\u6d3b<\/span>\n        executor.setCorePoolSize(16<\/span>);\n \n        \/\/\u5982\u679c\u8bbe\u7f6eallowCoreThreadTimeout=true\uff08\u9ed8\u8ba4false\uff09\u65f6\uff0c\u6838\u5fc3\u7ebf\u7a0b\u4f1a\u8d85\u65f6\u5173\u95ed<\/span>\n        \/\/executor.setAllowCoreThreadTimeOut(true);<\/span>\n \n        \/\/\u963b\u585e\u961f\u5217 \u5f53\u6838\u5fc3\u7ebf\u7a0b\u6570\u8fbe\u5230\u6700\u5927\u65f6\uff0c\u65b0\u4efb\u52a1\u4f1a\u653e\u5728\u961f\u5217\u4e2d\u6392\u961f\u7b49\u5f85\u6267\u884c<\/span>\n        executor.setQueueCapacity(124<\/span>);\n \n        \/\/\u6700\u5927\u7ebf\u7a0b\u6c60\u6570\u91cf\uff0c\u5f53\u7ebf\u7a0b\u6570>=corePoolSize\uff0c\u4e14\u4efb\u52a1\u961f\u5217\u5df2\u6ee1\u65f6\u3002\u7ebf\u7a0b\u6c60\u4f1a\u521b\u5efa\u65b0\u7ebf\u7a0b\u6765\u5904\u7406\u4efb\u52a1<\/span>\n        \/\/\u4efb\u52a1\u961f\u5217\u5df2\u6ee1\u65f6, \u4e14\u5f53\u7ebf\u7a0b\u6570=maxPoolSize\uff0c\uff0c\u7ebf\u7a0b\u6c60\u4f1a\u62d2\u7edd\u5904\u7406\u4efb\u52a1\u800c\u629b\u51fa\u5f02\u5e38<\/span>\n        executor.setMaxPoolSize(64<\/span>);\n \n        \/\/\u5f53\u7ebf\u7a0b\u7a7a\u95f2\u65f6\u95f4\u8fbe\u5230keepAliveTime\u65f6\uff0c\u7ebf\u7a0b\u4f1a\u9000\u51fa\uff0c\u76f4\u5230\u7ebf\u7a0b\u6570\u91cf=corePoolSize<\/span>\n        \/\/\u5141\u8bb8\u7ebf\u7a0b\u7a7a\u95f2\u65f6\u95f430\u79d2\uff0c\u5f53maxPoolSize\u7684\u7ebf\u7a0b\u5728\u7a7a\u95f2\u65f6\u95f4\u5230\u8fbe\u7684\u65f6\u5019\u9500\u6bc1<\/span>\n        \/\/\u5982\u679callowCoreThreadTimeout=true\uff0c\u5219\u4f1a\u76f4\u5230\u7ebf\u7a0b\u6570\u91cf=0<\/span>\n        executor.setKeepAliveSeconds(30<\/span>);\n \n        \/\/spring \u63d0\u4f9b\u7684 ThreadPoolTaskExecutor \u7ebf\u7a0b\u6c60\uff0c\u662f\u6709setThreadNamePrefix() \u65b9\u6cd5\u7684\u3002<\/span>\n        \/\/jdk \u63d0\u4f9b\u7684ThreadPoolExecutor \u7ebf\u7a0b\u6c60\u662f\u6ca1\u6709 setThreadNamePrefix() \u65b9\u6cd5\u7684<\/span>\n        executor.setThreadNamePrefix(\"\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u6c60-\"<\/span>);\n \n        \/\/ rejection-policy\uff1a\u62d2\u7edd\u7b56\u7565\uff1a\u5f53\u7ebf\u7a0b\u6570\u5df2\u7ecf\u8fbe\u5230maxSize\u7684\u65f6\u5019\uff0c\u5982\u4f55\u5904\u7406\u65b0\u4efb\u52a1<\/span>\n        \/\/ CallerRunsPolicy()\uff1a\u4ea4\u7531\u8c03\u7528\u65b9\u7ebf\u7a0b\u8fd0\u884c\uff0c\u6bd4\u5982 main \u7ebf\u7a0b\uff1b\u5982\u679c\u6dfb\u52a0\u5230\u7ebf\u7a0b\u6c60\u5931\u8d25\uff0c\u90a3\u4e48\u4e3b\u7ebf\u7a0b\u4f1a\u81ea\u5df1\u53bb\u6267\u884c\u8be5\u4efb\u52a1\uff0c\u4e0d\u4f1a\u7b49\u5f85\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\u53bb\u6267\u884c, (\u4e2a\u4eba\u63a8\u8350)<\/span>\n        \/\/ AbortPolicy()\uff1a\u8be5\u7b56\u7565\u662f\u7ebf\u7a0b\u6c60\u7684\u9ed8\u8ba4\u7b56\u7565\uff0c\u5982\u679c\u7ebf\u7a0b\u6c60\u961f\u5217\u6ee1\u4e86\u4e22\u6389\u8fd9\u4e2a\u4efb\u52a1\u5e76\u4e14\u629b\u51faRejectedExecutionException\u5f02\u5e38\u3002<\/span>\n        \/\/ DiscardPolicy()\uff1a\u5982\u679c\u7ebf\u7a0b\u6c60\u961f\u5217\u6ee1\u4e86\uff0c\u4f1a\u76f4\u63a5\u4e22\u6389\u8fd9\u4e2a\u4efb\u52a1\u5e76\u4e14\u4e0d\u4f1a\u6709\u4efb\u4f55\u5f02\u5e38<\/span>\n        \/\/ DiscardOldestPolicy()\uff1a\u4e22\u5f03\u961f\u5217\u4e2d\u6700\u8001\u7684\u4efb\u52a1\uff0c\u961f\u5217\u6ee1\u4e86\uff0c\u4f1a\u5c06\u6700\u65e9\u8fdb\u5165\u961f\u5217\u7684\u4efb\u52a1\u5220\u6389\u817e\u51fa\u7a7a\u95f4\uff0c\u518d\u5c1d\u8bd5\u52a0\u5165\u961f\u5217<\/span>\n        executor.setRejectedExecutionHandler(new<\/span> ThreadPoolExecutor.CallerRunsPolicy());\n \n        \/\/\u8bbe\u7f6e\u7ebf\u7a0b\u6c60\u5173\u95ed\u7684\u65f6\u5019\u7b49\u5f85\u6240\u6709\u4efb\u52a1\u90fd\u5b8c\u6210\u518d\u7ee7\u7eed\u9500\u6bc1\u5176\u4ed6\u7684Bean\uff0c\u8fd9\u6837\u8fd9\u4e9b\u5f02\u6b65\u4efb\u52a1\u7684\u9500\u6bc1\u5c31\u4f1a\u5148\u4e8eRedis\u7ebf\u7a0b\u6c60\u7684\u9500\u6bc1<\/span>\n  executor.setWaitForTasksToCompleteOnShutdown(true<\/span>);\n  \/\/\u8bbe\u7f6e\u7ebf\u7a0b\u6c60\u4e2d\u4efb\u52a1\u7684\u7b49\u5f85\u65f6\u95f4\uff0c\u5982\u679c\u8d85\u8fc7\u8fd9\u4e2a\u65f6\u5019\u8fd8\u6ca1\u6709\u9500\u6bc1\u5c31\u5f3a\u5236\u9500\u6bc1\uff0c\u4ee5\u786e\u4fdd\u5e94\u7528\u6700\u540e\u80fd\u591f\u88ab\u5173\u95ed\uff0c\u800c\u4e0d\u662f\u963b\u585e\u4f4f\u3002<\/span>\n  executor.setAwaitTerminationSeconds(60<\/span>);\n \n        executor.initialize();\n        return<\/span> executor;\n    }\n}\n<\/code><\/pre>\n
\u5f00\u542f\u5b50\u7ebf\u7a0b\u65b9\u6cd5:  <\/strong>\u5728\u9700\u8981\u5f00\u542f\u7ebf\u7a0b\u7684\u65b9\u6cd5\u4e0a\u6dfb\u52a0 \u6ce8\u89e3@Async(\"threadPoolTaskExecutor\")<\/code>\u5373\u53ef\uff0c\u5176\u4e2d\u6ce8\u89e3\u4e2d\u7684\u53c2\u6570\u4e3a\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u6c60\u7684\u540d\u79f0\u3002<\/p>\n
<\/span>\u4e8c\u3001\u81ea\u5b9a\u4e49\u6ce8\u89e3\u5b9e\u73b0\u591a\u7ebf\u7a0b\u4e8b\u52a1\u63a7\u5236<\/span><\/h3>\n
<\/span>1.\u81ea\u5b9a\u4e49\u6ce8\u89e3<\/span><\/h5>\n
\n
\u672c\u6587\u662f\u4f7f\u7528\u4e86\u4e24\u4e2a\u6ce8\u89e3\u5171\u540c\u4f5c\u7528\u5b9e\u73b0\u7684\uff0c\u4e3b\u7ebf\u7a0b\u5f53\u505a\u534f\u8c03\u8005\uff0c\u5404\u5b50\u7ebf\u7a0b\u4f5c\u4e3a\u53c2\u4e0e\u8005<\/p>\n<\/blockquote>\n
<\/span>package<\/span> com.example.anno;\n \nimport<\/span> java.lang.annotation.ElementType;\nimport<\/span> java.lang.annotation.Retention;\nimport<\/span> java.lang.annotation.RetentionPolicy;\nimport<\/span> java.lang.annotation.Target;\n \n\/**\n * \u591a\u7ebf\u7a0b\u4e8b\u52a1\u6ce8\u89e3: \u4e3b\u4e8b\u52a1\n *\n * @author<\/span> zlj\n * @since<\/span> 2022\/11\/3\n *\/<\/span>\n@Target<\/span>({ElementType.METHOD})\n@Retention<\/span>(RetentionPolicy.RUNTIME)\npublic<\/span> @interface<\/span> MainTransaction {\n int<\/span> value<\/span>()<\/span><\/span>;\/\/\u5b50\u7ebf\u7a0b\u6570\u91cf<\/span>\n}\n<\/code><\/pre>\n
<\/span>package<\/span> com.example.anno;\n \nimport<\/span> java.lang.annotation.ElementType;\nimport<\/span> java.lang.annotation.Retention;\nimport<\/span> java.lang.annotation.RetentionPolicy;\nimport<\/span> java.lang.annotation.Target;\n \n\/**\n * \u591a\u7ebf\u7a0b\u4e8b\u52a1\u6ce8\u89e3: \u5b50\u4e8b\u52a1\n *\n * @author<\/span> zlj\n * @since<\/span> 2022\/11\/3\n *\/<\/span>\n@Target<\/span>({ElementType.METHOD})\n@Retention<\/span>(RetentionPolicy.RUNTIME)\npublic<\/span> @interface<\/span> SonTransaction {\n    String value<\/span>()<\/span> default<\/span> \"\"<\/span>;\n}\n<\/code><\/pre>\n
\u89e3\u91ca:<\/strong><\/p>\n
\u4e24\u4e2a\u6ce8\u89e3\u90fd\u662f\u7528\u5728\u65b9\u6cd5\u4e0a\u7684\uff0c\u987b\u914d\u5408@Transactional(rollbackFor = Exception.class)<\/code>\u4e00\u8d77\u4f7f\u7528<\/p>\n
@MainTransaction\u6ce8\u89e3<\/strong> \u7528\u5728\u8c03\u7528\u65b9\uff0c\u5176\u53c2\u6570\u4e3a\u5fc5\u586b\uff0c\u53c2\u6570\u503c\u4e3a\u672c\u65b9\u6cd5\u4e2d\u8c03\u7528\u7684\u65b9\u6cd5\u5f00\u542f\u7684\u7ebf\u7a0b\u6570\uff0c\u5982\uff1a\u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\u8c03\u7528\u7684\u65b9\u6cd5\u4e2d\u67092\u4e2a\u65b9\u6cd5\u7528@Async<\/code>\u6ce8\u89e3\u5f00\u542f\u4e86\u5b50\u7ebf\u7a0b\uff0c\u5219\u53c2\u6570\u4e3a@MainTransaction(2)<\/code>\uff0c\u53e6\u5916\u5982\u679c\u672a\u4f7f\u7528@MainTransaction<\/code>\u6ce8\u89e3\uff0c\u5219\u76f4\u63a5\u5df2\u65e0\u591a\u7ebf\u7a0b\u4e8b\u52a1\u6267\u884c(\u4e0d\u5f71\u54cd\u65b9\u6cd5\u7684\u5355\u7ebf\u7a0b\u4e8b\u52a1)<\/p>\n
@SonTransaction\u6ce8\u89e3<\/strong> \u7528\u5728\u88ab\u8c03\u7528\u65b9(\u5f00\u542f\u7ebf\u7a0b\u7684\u65b9\u6cd5)\uff0c\u65e0\u9700\u4f20\u5165\u53c2\u6570<\/p>\n
<\/span>2.AOP\u5185\u5bb9<\/span><\/h3>\n
\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
<\/span>package<\/span> com.example.aop;\n \nimport<\/span> com.baomidou.mybatisplus.core.toolkit.CollectionUtils;\nimport<\/span> com.example.anno.MainTransaction;\nimport<\/span> org.aspectj.lang.ProceedingJoinPoint;\nimport<\/span> org.aspectj.lang.annotation.Around;\nimport<\/span> org.aspectj.lang.annotation.Aspect;\nimport<\/span> org.springframework.stereotype.Component;\nimport<\/span> org.springframework.transaction.PlatformTransactionManager;\nimport<\/span> org.springframework.transaction.TransactionDefinition;\nimport<\/span> org.springframework.transaction.TransactionStatus;\nimport<\/span> org.springframework.transaction.support.DefaultTransactionDefinition;\n \nimport<\/span> javax.annotation.Resource;\nimport<\/span> java.util.HashMap;\nimport<\/span> java.util.Map;\nimport<\/span> java.util.Vector;\nimport<\/span> java.util.concurrent.CountDownLatch;\nimport<\/span> java.util.concurrent.atomic.AtomicBoolean;\n \n\/**\n * \u591a\u7ebf\u7a0b\u4e8b\u52a1\n *\n * @author<\/span> zlj\n * @since<\/span> 2022\/11\/3\n *\/<\/span>\n@Aspect<\/span>\n@Component<\/span>\npublic<\/span> class<\/span> TransactionAop<\/span> <\/span>{\n \n    \/\/\u7528\u6765\u5b58\u50a8\u5404\u7ebf\u7a0b\u8ba1\u6570\u5668\u6570\u636e(\u6bcf\u6b21\u6267\u884c\u540e\u4f1a\u4ecemap\u4e2d\u5220\u9664)<\/span>\n private<\/span> static<\/span> final<\/span> Map<String, Object> map = new<\/span> HashMap<>();\n \n @Resource<\/span>\n private<\/span> PlatformTransactionManager transactionManager;\n \n @Around<\/span>(\"@annotation(mainTransaction)\"<\/span>)\n public<\/span> void<\/span> mainIntercept<\/span>(ProceedingJoinPoint joinPoint, MainTransaction mainTransaction)<\/span> throws<\/span> Throwable <\/span>{\n  \/\/\u5f53\u524d\u7ebf\u7a0b\u540d\u79f0<\/span>\n  Thread thread = Thread.currentThread();\n  String threadName = thread.getName();\n  \/\/\u521d\u59cb\u5316\u8ba1\u6570\u5668<\/span>\n  CountDownLatch mainDownLatch = new<\/span> CountDownLatch(1<\/span>);\n  CountDownLatch sonDownLatch = new<\/span> CountDownLatch(mainTransaction.value());\/\/@MainTransaction\u6ce8\u89e3\u4e2d\u7684\u53c2\u6570, \u4e3a\u5b50\u7ebf\u7a0b\u7684\u6570\u91cf<\/span>\n  \/\/ \u7528\u6765\u8bb0\u5f55\u5b50\u7ebf\u7a0b\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u53ea\u8981\u6709\u4e00\u4e2a\u5931\u8d25\u5c31\u53d8\u4e3atrue<\/span>\n  AtomicBoolean rollBackFlag = new<\/span> AtomicBoolean(false<\/span>);\n  \/\/ \u7528\u6765\u5b58\u6bcf\u4e2a\u5b50\u7ebf\u7a0b\u7684\u5f02\u5e38\uff0c\u628a\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u81ea\u5b9a\u4e49\u5f02\u5e38\u5411vector\u7684\u9996\u4f4d\u7f6e\u63d2\u5165\uff0c\u5176\u4f59\u5f02\u5e38\u5411\u672b\u4f4d\u7f6e\u63d2\u5165\uff0c\u907f\u514d\u7ebf\u7a0b\u4e0d\u5b89\u5168\uff0c\u6240\u4ee5\u4f7f\u7528vector\u4ee3\u66fflist<\/span>\n  Vector<Throwable> exceptionVector = new<\/span> Vector<>();\n \n  map.put(threadName + \"mainDownLatch\"<\/span>, mainDownLatch);\n  map.put(threadName + \"sonDownLatch\"<\/span>, sonDownLatch);\n  map.put(threadName + \"rollBackFlag\"<\/span>, rollBackFlag);\n  map.put(threadName + \"exceptionVector\"<\/span>, exceptionVector);\n \n  try<\/span> {\n   joinPoint.proceed();\/\/\u6267\u884c\u65b9\u6cd5<\/span>\n  } catch<\/span> (Throwable e) {\n   exceptionVector.add(0<\/span>, e);\n   rollBackFlag.set(true<\/span>);\/\/\u5b50\u7ebf\u7a0b\u56de\u6eda<\/span>\n   mainDownLatch.countDown();\/\/\u653e\u884c\u6240\u6709\u5b50\u7ebf\u7a0b<\/span>\n  }\n \n  if<\/span> (!rollBackFlag.get()) {\n   try<\/span> {\n    \/\/ sonDownLatch\u7b49\u5f85\uff0c\u76f4\u5230\u6240\u6709\u5b50\u7ebf\u7a0b\u6267\u884c\u5b8c\u63d2\u5165\u64cd\u4f5c\uff0c\u4f46\u6b64\u65f6\u8fd8\u6ca1\u6709\u63d0\u4ea4\u4e8b\u52a1<\/span>\n    sonDownLatch.await();\n    mainDownLatch.countDown();\/\/ \u6839\u636erollBackFlag\u72b6\u6001\u653e\u884c\u5b50\u7ebf\u7a0b\u7684await\u5904\uff0c\u544a\u77e5\u662f\u56de\u6eda\u8fd8\u662f\u63d0\u4ea4<\/span>\n   } catch<\/span> (Exception e) {\n    rollBackFlag.set(true<\/span>);\n    exceptionVector.add(0<\/span>, e);\n   }\n  }\n  if<\/span> (CollectionUtils.isNotEmpty(exceptionVector)) {\n   map.remove(threadName + \"mainDownLatch\"<\/span>);\n   map.remove(threadName + \"sonDownLatch\"<\/span>);\n   map.remove(threadName + \"rollBackFlag\"<\/span>);\n   map.remove(threadName + \"exceptionVector\"<\/span>);\n   throw<\/span> exceptionVector.get(0<\/span>);\n  }\n }\n \n @Around<\/span>(\"@annotation(com.huigu.common.anno.SonTransaction)\"<\/span>)\n public<\/span> void<\/span> sonIntercept<\/span>(ProceedingJoinPoint joinPoint)<\/span> throws<\/span> Throwable <\/span>{\n  Object[] args = joinPoint.getArgs();\n  Thread thread = (Thread) args[args.length - 1<\/span>];\n  String threadName = thread.getName();\n  CountDownLatch mainDownLatch = (CountDownLatch) map.get(threadName + \"mainDownLatch\"<\/span>);\n  if<\/span> (mainDownLatch == null<\/span>) {\n   \/\/\u4e3b\u4e8b\u52a1\u672a\u52a0\u6ce8\u89e3\u65f6, \u76f4\u63a5\u6267\u884c\u5b50\u4e8b\u52a1<\/span>\n   joinPoint.proceed();\/\/\u8fd9\u91cc\u6700\u597d\u7684\u65b9\u5f0f\u662f:\u4ea4\u7531\u4e0a\u9762\u7684thread\u6765\u8c03\u7528\u6b64\u65b9\u6cd5,\u4f46\u6211\u6ca1\u6709\u627e\u5bfb\u5230\u5bf9\u5e94api,\u53ea\u80fd\u76f4\u63a5\u653e\u5f03\u4e8b\u52a1, \u6b22\u8fce\u5927\u795e\u6765\u4f18\u5316, \u7559\u8a00\u5206\u4eab<\/span>\n   return<\/span>;\n  }\n  CountDownLatch sonDownLatch = (CountDownLatch) map.get(threadName + \"sonDownLatch\"<\/span>);\n  AtomicBoolean rollBackFlag = (AtomicBoolean) map.get(threadName + \"rollBackFlag\"<\/span>);\n  Vector<Throwable> exceptionVector = (Vector<Throwable>) map.get(threadName + \"exceptionVector\"<\/span>);\n \n  \/\/\u5982\u679c\u8fd9\u65f6\u6709\u4e00\u4e2a\u5b50\u7ebf\u7a0b\u5df2\u7ecf\u51fa\u9519\uff0c\u90a3\u5f53\u524d\u7ebf\u7a0b\u4e0d\u9700\u8981\u6267\u884c<\/span>\n  if<\/span> (rollBackFlag.get()) {\n   sonDownLatch.countDown();\n   return<\/span>;\n  }\n \n  DefaultTransactionDefinition def = new<\/span> DefaultTransactionDefinition();\/\/ \u5f00\u542f\u4e8b\u52a1<\/span>\n  def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES_NEW);\/\/ \u8bbe\u7f6e\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b<\/span>\n  TransactionStatus status = transactionManager.getTransaction(def);\n \n  try<\/span> {\n   joinPoint.proceed();\/\/\u6267\u884c\u65b9\u6cd5<\/span>\n \n   sonDownLatch.countDown();\/\/ \u5bf9sonDownLatch-1<\/span>\n   mainDownLatch.await();\/\/ \u5982\u679cmainDownLatch\u4e0d\u662f0\uff0c\u7ebf\u7a0b\u4f1a\u5728\u6b64\u963b\u585e\uff0c\u76f4\u5230mainDownLatch\u53d8\u4e3a0<\/span>\n   \/\/ \u5982\u679c\u80fd\u6267\u884c\u5230\u8fd9\u4e00\u6b65\u8bf4\u660e\u6240\u6709\u5b50\u7ebf\u7a0b\u90fd\u5df2\u7ecf\u6267\u884c\u5b8c\u6bd5\u5224\u65ad\u5982\u679catomicBoolean\u662ftrue\u5c31\u56de\u6edafalse\u5c31\u63d0\u4ea4<\/span>\n   if<\/span> (rollBackFlag.get()) {\n    transactionManager.rollback(status);\n   } else<\/span> {\n    transactionManager.commit(status);\n   }\n  } catch<\/span> (Throwable e) {\n   exceptionVector.add(0<\/span>, e);\n   \/\/ \u56de\u6eda<\/span>\n   transactionManager.rollback(status);\n   \/\/ \u5e76\u628a\u72b6\u6001\u8bbe\u7f6e\u4e3atrue<\/span>\n   rollBackFlag.set(true<\/span>);\n   mainDownLatch.countDown();\n   sonDownLatch.countDown();\n  }\n }\n}\n<\/code><\/pre>\n
\u6269\u5c55\u8bf4\u660e: CountDownLatch\u662f\u4ec0\u4e48?<\/strong><\/p>\n
\u4e00\u4e2a\u540c\u6b65\u8f85\u52a9\u7c7b<\/p>\n
    \n
  • \n
    \n
    \u521b\u5efa\u5bf9\u8c61\u65f6: \u7528\u7ed9\u5b9a\u7684\u6570\u5b57\u521d\u59cb\u5316 CountDownLatch<\/code><\/p>\n<\/section>\n<\/li>\n
  • \n
    \n
    countDown()<\/code> \u65b9\u6cd5: \u4f7f\u8ba1\u6570\u51cf1<\/p>\n<\/section>\n<\/li>\n
  • \n
    \n
    await()<\/code> \u65b9\u6cd5: \u963b\u585e\u5f53\u524d\u7ebf\u7a0b, \u76f4\u81f3\u5f53\u524d\u8ba1\u6570\u5230\u8fbe\u96f6\u3002<\/p>\n<\/section>\n<\/li>\n<\/ul>\n
    \u672c\u6587\u4e2d:<\/p>\n
    \u7528 \u8ba1\u6570 1 \u521d\u59cb\u5316\u7684 mainDownLatch<\/code> \u5f53\u4f5c\u4e00\u4e2a\u7b80\u5355\u7684\u5f00\/\u5173\u9501\u5b58\u5668\uff0c\u6216\u5165\u53e3\uff1a\u5728\u901a\u8fc7\u8c03\u7528 countDown()<\/code> \u7684\u7ebf\u7a0b\u6253\u5f00\u5165\u53e3\u524d\uff0c\u6240\u6709\u8c03\u7528 await \u7684\u7ebf\u7a0b\u90fd\u4e00\u76f4\u5728\u5165\u53e3\u5904\u7b49\u5f85\u3002<\/p>\n
    \u7528 \u5b50\u7ebf\u7a0b\u6570\u91cf \u521d\u59cb\u5316\u7684 sonDownLatch<\/code> \u53ef\u4ee5\u4f7f\u4e00\u4e2a\u7ebf\u7a0b\u5728 N \u4e2a\u7ebf\u7a0b\u5b8c\u6210\u67d0\u9879\u64cd\u4f5c\u4e4b\u524d\u4e00\u76f4\u7b49\u5f85\uff0c\u6216\u8005\u4f7f\u5176\u5728\u67d0\u9879\u64cd\u4f5c\u5b8c\u6210 N \u6b21\u4e4b\u524d\u4e00\u76f4\u7b49\u5f85\u3002<\/p>\n
    <\/span>3\u3001\u6ce8\u89e3\u4f7f\u7528Demo<\/span><\/h3>\n
    \u4efb\u52a1\u65b9\u6cd5:<\/p>\n
    <\/span>package<\/span> com.example.demo.service;\n \nimport<\/span> com.example.demo.anno.SonTransaction;\nimport<\/span> org.springframework.scheduling.annotation.Async;\nimport<\/span> org.springframework.stereotype.Service;\nimport<\/span> org.springframework.transaction.annotation.Transactional;\n \n\/**\n * @author<\/span> zlj\n * @since<\/span> 2022\/11\/14\n *\/<\/span>\n@Service<\/span>\npublic<\/span> class<\/span> SonService<\/span> <\/span>{\n \n    \/**\n     * \u53c2\u6570\u8bf4\u660e:  \u4ee5\u4e0b4\u4e2a\u65b9\u6cd5\u53c2\u6570\u548c\u6b64\u76f8\u540c\n     *\n     * @param<\/span> args   \u4e1a\u52a1\u4e2d\u9700\u8981\u4f20\u9012\u7684\u53c2\u6570\n     * @param<\/span> thread \u8c03\u7528\u8005\u7684\u7ebf\u7a0b, \u7528\u4e8eaop\u83b7\u53d6\u53c2\u6570, \u4e0d\u5efa\u8bae\u4ee5\u65b9\u6cd5\u91cd\u5199\u7684\u65b9\u5f0f\u7b80\u7565\u6b64\u53c2\u6570,\n     *               \u5728\u8c03\u7528\u8005\u65b9\u6cd5\u4e2d\u53ef\u4ee5\u4ee5\u6b64\u53c2\u6570\u4e3a\u6807\u8bc6\u8ba1\u7b97\u5b50\u7ebf\u7a0b\u7684\u4e2a\u6570\u4f5c\u4e3a\u6ce8\u89e3\u53c2\u6570,\u907f\u514d\u7ebf\u7a0b\u53c2\u6570\u8ba1\u7b97\u9519\u8bef\u5bfc\u81f4\u9501\u8868\n     *               \u4f20\u53c2\u65f6\u53c2\u6570\u56fa\u5b9a\u4e3a: Thread.currentThread()\n     *\/<\/span>\n    @Transactional<\/span>(rollbackFor = Exception.class<\/span>)\n    @Async<\/span>(\"threadPoolTaskExecutor<\/span>\")\n    @SonTransaction<\/span>\n    public<\/span> void<\/span> sonMethod1<\/span>(String<\/span> args<\/span>, Thread<\/span> thread<\/span>) <\/span>{\n        System.out.println(args + \"\u5f00\u542f\u4e86\u7ebf\u7a0b\"<\/span>);\n    }\n \n    @Transactional<\/span>(rollbackFor = Exception.class<\/span>)\n    @Async<\/span>(\"threadPoolTaskExecutor<\/span>\")\n    @SonTransaction<\/span>\n    public<\/span> void<\/span> sonMethod2<\/span>(String<\/span> args1<\/span>, String<\/span> args2<\/span>, Thread<\/span> thread<\/span>) <\/span>{\n        System.out.println(args1 + \"\u548c\"<\/span> + args2 + \"\u5f00\u542f\u4e86\u7ebf\u7a0b\"<\/span>);\n    }\n \n    @Transactional<\/span>(rollbackFor = Exception.class<\/span>)\n    @Async<\/span>(\"threadPoolTaskExecutor<\/span>\")\n    @SonTransaction<\/span>\n    public<\/span> void<\/span> sonMethod3<\/span>(String<\/span> args<\/span>, Thread<\/span> thread<\/span>) <\/span>{\n        System.out.println(args + \"\u5f00\u542f\u4e86\u7ebf\u7a0b\"<\/span>);\n    }\n \n    \/\/sonMethod4\u65b9\u6cd5\u6ca1\u6709\u4f7f\u7528\u7ebf\u7a0b\u6c60<\/span>\n    @Transactional<\/span>(rollbackFor = Exception.class<\/span>)\n    public<\/span> void<\/span> sonMethod4<\/span>(String<\/span> args<\/span>) <\/span>{\n        System.out.println(args + \"\u6ca1\u6709\u5f00\u542f\u7ebf\u7a0b\"<\/span>);\n    }\n}\n<\/code><\/pre>\n
    \u8c03\u7528\u65b9:<\/p>\n
    <\/span>package<\/span> com.example.demo.service;\n \nimport<\/span> com.example.demo.anno.MainTransaction;\nimport<\/span> org.springframework.stereotype.Service;\nimport<\/span> org.springframework.transaction.annotation.Transactional;\n \nimport<\/span> javax.annotation.Resource;\n \n\/**\n * @author<\/span> zlj\n * @since<\/span> 2022\/11\/14\n *\/<\/span>\n@Service<\/span>\npublic<\/span> class<\/span> MainService<\/span> <\/span>{\n \n    @Resource<\/span>\n    private<\/span> SonService sonService;\n \n    @MainTransaction<\/span>(3<\/span>)\/\/\u8c03\u7528\u7684\u65b9\u6cd5\u4e2dsonMethod1\/sonMethod2\/sonMethod3\u4f7f\u7528@Async\u5f00\u542f\u4e86\u7ebf\u7a0b, \u6240\u4ee5\u53c2\u6570\u4e3a: 3<\/span>\n    @Transactional<\/span>(rollbackFor = Exception.class<\/span>)\n    public<\/span> void<\/span> test1<\/span>() <\/span>{\n        sonService.sonMethod1(\"\u8def\u98de\"<\/span>, Thread.currentThread());\n        sonService.sonMethod2(\"\u7d22\u9686\"<\/span>, \"\u5c71\u6cbb\"<\/span>, Thread.currentThread());\n        sonService.sonMethod3(\"\u5a1c\u7f8e\"<\/span>, Thread.currentThread());\n        sonService.sonMethod4(\"\u7f57\u5bbe\"<\/span>);\n    }\n \n    \/*\n     * \u6709\u7684\u4e1a\u52a1\u4e2d\u5b58\u5728if\u7684\u591a\u79cd\u53ef\u80fd, \u6bcf\u4e00\u79cd\u8d70\u5411\u8c03\u7528\u7684\u65b9\u6cd5(\u5f00\u542f\u7ebf\u7a0b\u7684\u65b9\u6cd5)\u6570\u91cf\u5982\u679c\u4e0d\u540c, \u8fd9\u65f6\u53ef\u4ee5\u9009\u62e9\u653e\u5f03\u4f7f\u7528@MainTransaction\u6ce8\u89e3\u907f\u514d\u9501\u8868\n     * \u8fd9\u65f6\u5019\u5982\u679c\u53d1\u751f\u5f02\u5e38\u4f1a\u5bfc\u81f4\u591a\u7ebf\u7a0b\u4e0d\u80fd\u540c\u65f6\u56de\u6eda, \u53ef\u6839\u636e\u4e1a\u52a1\u81ea\u5df1\u6743\u8861\u662f\u5426\u4f7f\u7528\n     *\/<\/span>\n    @Transactional<\/span>(rollbackFor = Exception.class<\/span>)\n    public<\/span> void<\/span> test2<\/span>() <\/span>{\n        sonService.sonMethod1(\"\u8def\u98de\"<\/span>, Thread.currentThread());\n        sonService.sonMethod2(\"\u7d22\u9686\"<\/span>, \"\u5c71\u6cbb\"<\/span>, Thread.currentThread());\n        sonService.sonMethod3(\"\u5a1c\u7f8e\"<\/span>, Thread.currentThread());\n        sonService.sonMethod4(\"\u7f57\u5bbe\"<\/span>);\n    }\n \n}\n<\/code><\/pre>\n<\/section>\n
    \n
    <\/h3>\n
    \u6765\u6e90\uff1ablog.csdn.net\/weixin_69672118\/<\/em><\/h3>\n
    article\/details\/127675808<\/em><\/h3>\n<\/section>\n
    \n <\/mp-style-type><\/p>\n
    \u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8e\u5fae\u4fe1\u516c\u4f17\u53f7\uff1ahttps:\/\/mp.weixin.qq.com\/s\/XBKCp0iyIUWN-Jg8HrWweA<\/p>\n","raw":"","protected":false},"excerpt":{"rendered":"
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