spring - JdbcTemplate クエリでデータベース接続を閉じる

Question

私は休止状態でjpaを使用しています。私は次の方法を持っています：

@Transactional
public void myMethod(){
...
firstJDBCTemplateQuery();
secondJDBCTemplateQuery();
...

}

firstJDBCTemplateQuery動作しますが、データベースへの接続を閉じます。秒secondJDBCTempolateQuery実行時

java.sql.SQLException: Connection is closed exception

スローされる原因

org.springframework.transaction.TransactionSystemException: Could not roll back JPA transaction ...

私の構成：編集

     <bean id="dataSource"
            class="org.apache.commons.dbcp.BasicDataSource">
            <property name="driverClassName" value="${jdbc.driverClassName}" />
            <property name="url" value="${jdbc.url}" />
            <property name="username" value="${jdbc.username}" />
            <property name="password" value="${jdbc.password}" />

        </bean>


        <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
            <property name="entityManagerFactory" ref="emf" />

        </bean>

        <tx:annotation-driven transaction-manager="transactionManager" />
<bean id="emf"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
        </property>
        <property name="packagesToScan" value="com.emisoft.ami.user.domain" />

        <property name="jpaProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
                <prop key="hibernate.max_fetch_depth">3</prop>
                <prop key="hibernate.jdbc.fetch_size">50</prop>
                <prop key="hibernate.jdbc.batch_size">10</prop>
                <prop key="hibernate.show_sql">false</prop>
            </props>
        </property>

    </bean>


    <jpa:repositories base-package="com.emisoft.ami.user.repository"
        entity-manager-factory-ref="emf" transaction-manager-ref="transactionManager" />
        ...

「firstJDBCTemplateQuery」がデータベース接続を閉じる理由がわかりません。この問題を解決するにはどうすればよいですか?

スタックトレース：

    org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Connection is closed.
        at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:296)
        at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:320)
        at org.springframework.jdbc.support.SQLErrorCodesFactory.getErrorCodes(SQLErrorCodesFactory.java:214)
        at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.setDataSource(SQLErrorCodeSQLExceptionTranslator.java:140)
        at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.<init>(SQLErrorCodeSQLExceptionTranslator.java:103)
        at org.springframework.jdbc.support.JdbcAccessor.getExceptionTranslator(JdbcAccessor.java:99)
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:605)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:639)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:668)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:676)
        at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:731)
        at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:747)
        at org.springframework.jdbc.core.JdbcTemplate.queryForInt(JdbcTemplate.java:782)
        at org.springframework.security.provisioning.JdbcUserDetailsManager.findGroupId(JdbcUserDetailsManager.java:373)
        at org.springframework.security.provisioning.JdbcUserDetailsManager.addUserToGroup(JdbcUserDetailsManager.java:301)
//////////////////////////////////////////////////This is secondJDBCTemplateQuery///////////
        at com.emisoft.ami.user.service.impl.UserServiceImpl.insert(UserServiceImpl.java:42)
///////////////////////////////////////////////////////////////////////////////////////////
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at com.sun.proxy.$Proxy46.insert(Unknown Source)
        at com.kulig.test.service.PaymentServiceContext.main(PaymentServiceContext.java:28)
    Caused by: java.sql.SQLException: Connection is closed.
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.checkOpen(PoolingDataSource.java:185)
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.getMetaData(PoolingDataSource.java:244)
        at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:285)
        ... 29 more
    DEBUG: org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator - Unable to translate SQLException with Error code '0', will now try the fallback translator
    DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Initiating transaction rollback
    DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Rolling back JPA transaction on EntityManager [org.hibernate.ejb.EntityManagerImpl@76c741]
    DEBUG: org.hibernate.engine.transaction.spi.AbstractTransactionImpl - rolling back
    DEBUG: org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction - re-enabling autocommit
    DEBUG: org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction - Could not toggle autocommit
    java.sql.SQLException: Connection is closed.
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.checkOpen(PoolingDataSource.java:185)
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.setAutoCommit(PoolingDataSource.java:327)
        at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.releaseManagedConnection(JdbcTransaction.java:127)
        at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:170)
        at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:209)
        at org.hibernate.ejb.TransactionImpl.rollback(TransactionImpl.java:106)
        at org.springframework.orm.jpa.JpaTransactionManager.doRollback(JpaTransactionManager.java:539)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:846)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:823)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.completeTransactionAfterThrowing(TransactionAspectSupport.java:493)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:264)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at com.sun.proxy.$Proxy46.insert(Unknown Source)
        at com.kulig.test.service.PaymentServiceContext.main(PaymentServiceContext.java:28)
    DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Closing JPA EntityManager [org.hibernate.ejb.EntityManagerImpl@76c741] after transaction
    DEBUG: org.hibernate.engine.jdbc.internal.LogicalConnectionImpl - Releasing JDBC connection
    DEBUG: org.hibernate.engine.jdbc.internal.LogicalConnectionImpl - Released JDBC connection
    ERROR: org.springframework.transaction.interceptor.TransactionInterceptor - Application exception overridden by rollback exception
    org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [select id from groups where group_name = ?]; SQL state [null]; error code [0]; Connection is closed.; nested exception is java.sql.SQLException: Connection is closed.
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:605)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:639)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:668)
        at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:676)
        at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:731)
        at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:747)
        at org.springframework.jdbc.core.JdbcTemplate.queryForInt(JdbcTemplate.java:782)
        at org.springframework.security.provisioning.JdbcUserDetailsManager.findGroupId(JdbcUserDetailsManager.java:373)
        at org.springframework.security.provisioning.JdbcUserDetailsManager.addUserToGroup(JdbcUserDetailsManager.java:301)
        at com.emisoft.ami.user.service.impl.UserServiceImpl.insert(UserServiceImpl.java:42)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at com.sun.proxy.$Proxy46.insert(Unknown Source)
        at com.kulig.test.service.PaymentServiceContext.main(PaymentServiceContext.java:28)
    Caused by: java.sql.SQLException: Connection is closed.
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.checkOpen(PoolingDataSource.java:185)
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:312)
        at org.springframework.jdbc.core.JdbcTemplate$SimplePreparedStatementCreator.createPreparedStatement(JdbcTemplate.java:1446)
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:583)
        ... 23 more
    Exception in thread "main" org.springframework.transaction.TransactionSystemException: Could not roll back JPA transaction; nested exception is javax.persistence.PersistenceException: unexpected error when rollbacking
        at org.springframework.orm.jpa.JpaTransactionManager.doRollback(JpaTransactionManager.java:543)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:846)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:823)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.completeTransactionAfterThrowing(TransactionAspectSupport.java:493)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:264)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at com.sun.proxy.$Proxy46.insert(Unknown Source)
        at com.kulig.test.service.PaymentServiceContext.main(PaymentServiceContext.java:28)
    Caused by: javax.persistence.PersistenceException: unexpected error when rollbacking
        at org.hibernate.ejb.TransactionImpl.rollback(TransactionImpl.java:109)
        at org.springframework.orm.jpa.JpaTransactionManager.doRollback(JpaTransactionManager.java:539)
        ... 9 more
    Caused by: org.hibernate.TransactionException: rollback failed
        at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:215)
        at org.hibernate.ejb.TransactionImpl.rollback(TransactionImpl.java:106)
        ... 10 more
    Caused by: org.hibernate.TransactionException: unable to rollback against JDBC connection
        at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:167)
        at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:209)
        ... 11 more
    Caused by: java.sql.SQLException: Connection is closed.
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.checkOpen(PoolingDataSource.java:185)
        at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.rollback(PoolingDataSource.java:322)
        at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:163)
        ... 12 more

EDITスタックトレースでチェックsecondJDBCTemplateQueryしました。

編集

私が使うorg.springframework.security.provisioning.JdbcUserDetailsManager

firstJDBCTemplateQueryはcreateUser(UserDetails user)

secondJDBCTemplateQueryはaddUserToGroup(String username, String groupName)

public void createUser(final UserDetails user) {
        validateUserDetails(user);
        getJdbcTemplate().update(createUserSql, new PreparedStatementSetter() {
            public void setValues(PreparedStatement ps) throws SQLException {
                ps.setString(1, user.getUsername());
                ps.setString(2, user.getPassword());
                ps.setBoolean(3, user.isEnabled());
            }

        });

        if (getEnableAuthorities()) {
            insertUserAuthorities(user);
        }
    }


public void addUserToGroup(final String username, final String groupName) {
        logger.debug("Adding user '" + username + "' to group '" + groupName + "'");
        Assert.hasText(username);
        Assert.hasText(groupName);

        final int id = findGroupId(groupName);
        getJdbcTemplate().update(insertGroupMemberSql, new PreparedStatementSetter() {
            public void setValues(PreparedStatement ps) throws SQLException {
                ps.setInt(1, id);
                ps.setString(2, username);
            }
        });

        userCache.removeUserFromCache(username);
    }

デバッグ結果の編集:

起動時にトランザクションを開始myMethod():

DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Creating new transaction with name [com.emisoft.ami.user.service.impl.UserServiceImpl.insert]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''
DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Opened new EntityManager [org.hibernate.ejb.EntityManagerImpl@b18ac9] for JPA transaction
DEBUG: org.hibernate.engine.transaction.spi.AbstractTransactionImpl - begin
DEBUG: org.hibernate.engine.jdbc.internal.LogicalConnectionImpl - Obtaining JDBC connection
DEBUG: org.hibernate.engine.jdbc.internal.LogicalConnectionImpl - Obtained JDBC connection
DEBUG: org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction - initial autocommit status: true
DEBUG: org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction - disabling autocommit
DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Exposing JPA transaction as JDBC transaction [org.springframework.orm.jpa.vendor.HibernateJpaDialect$HibernateConnectionHandle@940dc4]

///////////////////////////////////////////////////// firstJDBCTemplateMethod_ ///////////////////

DEBUG: org.springframework.jdbc.core.JdbcTemplate - Executing prepared SQL update
DEBUG: org.springframework.jdbc.core.JdbcTemplate - Executing prepared SQL statement [insert into users (username, password, enabled) values (?,?,?)]
DEBUG: org.springframework.jdbc.core.JdbcTemplate - SQL update affected 1 rows

/////////////////////////////////////////////// secondJDBCTemplateMethod_ ////////////////////////////

DEBUG: org.springframework.jdbc.core.JdbcTemplate - Executing prepared SQL query
DEBUG: org.springframework.jdbc.core.JdbcTemplate - Executing prepared SQL statement [select id from groups where group_name = ?]
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource [org/springframework/jdbc/support/sql-error-codes.xml]
INFO : org.springframework.jdbc.support.SQLErrorCodesFactory - SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase]
DEBUG: org.springframework.jdbc.support.SQLErrorCodesFactory - Looking up default SQLErrorCodes for DataSource [org.apache.commons.dbcp.BasicDataSource@150f6f]
WARN : org.springframework.jdbc.support.SQLErrorCodesFactory - Error while extracting database product name - falling back to empty error codes
org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Connection is closed. ///This is the beginning of stacktrace which is located above.

編集 PaymentServiceContext：

public class PaymentServiceContext {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
                "com/kulig/test/service/PaymentServiceTest-context.xml");

        UserService userService = context.getBean(UserService.class);
        ///CREATE POJO OBJECTS credentials and p
                ...
        userService.insert(credentials, p);

    }

}

score 5 · Accepted Answer

実は、私も最近同じような問題を抱えていました...

Hibernate コードをデバッグした後、ある時点で Hibernate 4 が HibernateJpaDialect.releaseConnection を呼び出していることに気付きました。前のコメントは、接続を解放するだけであり、トランザクションコンテキストで使用される接続であるため、接続を閉じることではないことを示唆しています。ただし、その releaseConnection メソッドは実際には JdbcUtils.closeConnection(con) を呼び出します。担当する HibernateJpaDialect クラスは、実際には、休止状態ではなく、Spring フレームワークの一部です。

最終的に、この問題は Spring によってバグ (SPR-10395) として報告され、リリース 3.2.3 以降で修正される必要があります。最終的に、Hibernate 4.2 を使用できますが、その場合は spring (orm) をアップグレードする必要があります。

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>3.2.3</version>
</dependency>

score 1 · Accepted Answer

休止状態にバグがあると思います。私が変更され

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>4.2.5.Final</version>
</dependency>

に

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>4.1.12.Final</version>
</dependency>

そしてそれは動作します。

score 0 · Accepted Answer

まず、DataSourceJPA と同じものを使用していることを確認してくださいJdbcTemplate。次にをに配線DataSourceしJpaTransactionManagerます。

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="emf" />
    <property name="dataSource" ref="dataSource" />        
</bean>

これにより、同じトランザクションマネージャーによってトランザクションが管理されます (1 つのトランザクションのみを管理する必要があります)。

spring - JdbcTemplate クエリでデータベース接続を閉じる

4 に答える 4

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