java - Spring Boot 应用程序在数据库重启时失败

Question

我们开发了一个Springboot Java应用，我把它放在一个docker容器上作为开发环境。

Spring boot版本为1.5.6

使用的数据库是 SQL server 2016，它也是在 docker(windows 容器)上。

问题:每当我重新启动 SQL DB 容器时，应用程序就会开始出现此错误。

2018-10-29 16:00:08,993 ERROR pool-13-thread-1  org.springframework.scheduling.support.TaskUtils$LoggingErrorHandler - Unexpected error occurred in scheduled task.
org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is javax.persistence.PersistenceException: com.microsoft.sqlserver.jdbc.SQLServerException: The connection is closed.
        at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:431)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:447)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:277)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:133)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
        at com.sun.proxy.$Proxy155.findOne(Unknown Source)
        at au.com.outware.swepad.tasks.WorkOrderManagerTask.taskFetchAndProcessWorkOrderDetails(WorkOrderManagerTask.java:63)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
        at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
        at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: javax.persistence.PersistenceException: com.microsoft.sqlserver.jdbc.SQLServerException: The connection is closed.
        at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1692)
        at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602)
        at org.hibernate.jpa.spi.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:1700)
        at org.hibernate.jpa.internal.TransactionImpl.begin(TransactionImpl.java:48)
        at org.springframework.orm.jpa.vendor.HibernateJpaDialect.beginTransaction(HibernateJpaDialect.java:189)
        at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:380)
        ... 30 common frames omitted
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: The connection is closed.
        at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:206)
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.checkClosed(SQLServerConnection.java:724)
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.setAutoCommit(SQLServerConnection.java:2615)
        at sun.reflect.GeneratedMethodAccessor163.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:126)
        at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:108)
        at org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke(AbstractCreateStatementInterceptor.java:79)
        at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:108)
        at org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:81)
        at com.sun.proxy.$Proxy102.setAutoCommit(Unknown Source)
        at org.hibernate.resource.jdbc.internal.AbstractLogicalConnectionImplementor.begin(AbstractLogicalConnectionImplementor.java:67)
        at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:238)
        at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:214)
        at org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:52)
        at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1512)
        at org.hibernate.jpa.internal.TransactionImpl.begin(TransactionImpl.java:45)
        ... 32 common frames omitted
2018-10-29 16:00:08,995 WARN pool-30-thread-1  org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 0, SQLState: null
2018-10-29 16:00:08,996 ERROR pool-30-thread-1  org.hibernate.engine.jdbc.spi.SqlExceptionHelper - The connection is closed.
2018-10-29 16:30:00,017 INFO pool-13-threa

让应用程序正常工作的唯一方法是重启应用程序(容器重启)

我们在论坛上搜索并在我们的 application.yml 中设置了这个属性。

spring.datasource.tomcat.testOnBorrow=true
spring.datasource.tomcat.validation-query=SELECT 1

我们的应用程序 yml 如下所示。

spring:
  datasource:
    type: org.apache.tomcat.jdbc.pool.XADataSource
    tomcat:
      test-on-borrow: true
      validation-query: select 1
      validation-interval: 30000
  jpa:
    database: sql_server
    database-platform: org.hibernate.dialect.SQLServer2012Dialect
    generate-ddl: false
    hibernate:
      ddl-auto: none

我们在 yml 文件中有一个单独的部分，用于开发、暂存、生产环境。

我们正在为开发环境使用开发配置文件。这是否要求我们将 tomcat 属性放入此部分？

---
spring:
  profiles: dev,staging,prod
  datasource:
    url: "jdbc:sqlserver://${DB_IP}:${DB_PORT};databaseName=${DB_NAME}"
    username: "${DB_USER}"
    password: "${DB_PASS}"
    initialize: false
  jpa:
    show-sql: true
    generate-ddl: false
    hibernate:
      ddl-auto: none

知道可以做些什么来解决这个问题。

谢谢。

Answer 1

请确保您的数据库运行在您在属性文件(.yaml或.properties).

org.springframework.transaction.CannotCreateTransactionException: Could not 
open JPA EntityManager for transaction; nested exception is 
javax.persistence.PersistenceException: com.microsoft.sqlserver.jdbc.SQLServerException: 
The connection is closed.

如果您仔细观察您的异常并阅读消息，您将能够轻松识别问题。

此处堆栈跟踪显示 EntityManager 将无法初始化，因为连接已关闭。

Note : Please Verify that is your db is running or not ??