春季有多个事务管理器的多个数据源

Question

我有三个在Junit应用程序上下文文件中定义的DataSource（JDBC）。其中两个需要进行事务管理;使用这两个数据源时，我不必链接任何方法（它们完全相互独立）。

尽管dataSource3正在使用但未在相应方法中进行管理，但我在使用单个事务管理器dataSource2时没有问题。尽管如此，在需要管理单独使用dataSource3的各种DAO类的方法时，我添加了第二笔交易 - txManager2。上下文文件包含以下内容：

<context:component-scan base-package="my.pkg" /> 

<bean id="dataSource1" 
    class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
    <property name="driverClassName" value="oracle.jdbc.OracleDriver" /> 
    <property name="url" value="jdbc:oracle:thin:@host1:1521:dbsid1" /> 
<property name="username" value="username1" /> 
<property name="password" value="password1" /> 
</bean> 

<bean id="dataSource2" 
    class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
    <property name="driverClassName" value="oracle.jdbc.OracleDriver" /> 
    <property name="url" value="jdbc:oracle:thin:@host2:1521:dbsid2" /> 
<property name="username" value="username2" /> 
<property name="password" value="password2" /> 
</bean> 

<bean id="dataSource3" 
    class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
    <property name="driverClassName" value="oracle.jdbc.OracleDriver" /> 
    <property name="url" value="jdbc:oracle:thin:@host3:1521:dbsid3" /> 
<property name="username" value="username3" /> 
<property name="password" value="password3" /> 
</bean> 

<tx:annotation-driven/> 

<bean id="txManager1" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
    <qualifier value="txManager1"/> 
<property name="dataSource2" ref="dataSource2"/> 
</bean> 

<bean id="txManager2" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
    <qualifier value="txManager2"/> 
<property name="dataSource3" ref="dataSource3"/> 
</bean> 

由于多个事务管理器被定义，我合格他们与自己的价值观。正如你所看到的，dataSource3使用setter方法注入：

package my.pkg; 

@Component 
public class MyDAO { 

    private DataSource dataSource3; 

    // Read only from datasource 
    @Autowired 
    @Qualifier("dataSource") 
    public void setDataSource(DataSource ds) { 
     template = new NamedParameterJdbcTemplate(ds); 
    } 

    // Performs reads/updates/inserts from datasource2 
    @Autowired 
    @Qualifier("dataSource2") 
    public void setDataSource2(DataSource ds) { 
     iTemplate = new NamedParameterJdbcTemplate(ds); 
    } 

    // Performs reads/updates/inserts from datasource3 
    @Autowired 
    @Qualifier("dataSource3") 
    public void setDataSource3(DataSource ds) { 
     dataSource3 = ds; 
     uTemplate = new NamedParameterJdbcTemplate(ds); 
    } 

    @Transactional("txManager1")  
    public String insertProcs() { } 

    @Transactional("txManager2")  
    public String updateProcs() { } 
} 

然而，在运行Junit的单元测试，我得到如下：

java.lang.IllegalStateException: Failed to load ApplicationContext 
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:308) 
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109) 
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75) 
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:321) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) 
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) 
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174) 
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49) 
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txManager2' defined in class path resource [test-context.xml]: 

Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'dataSource3' of bean class 

[org.springframework.jdbc.datasource.DataSourceTransactionManager]: Bean property 'dataSource3' is not writable or has an invalid setter method. Does the parameter 

type of the setter match the return type of the getter? 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1363) 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1085) 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:516) 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455) 
     at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293) 
     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) 
     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290) 
     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192) 
     at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585) 
     at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) 
     at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) 
     at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:84) 
     at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:1) 
     at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:280) 
     at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:304) 
     ... 24 more 
    Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'dataSource3' of bean class 

    [org.springframework.jdbc.datasource.DataSourceTransactionManager]: Bean property 'dataSource3' is not writable or has an invalid setter method. Does the parameter 

    type of the setter match the return type of the getter? 
     at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1052) 
     at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:921) 
     at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:76) 
     at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:58) 
     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1360) 

任何想法，源问题是？

更新

基于公认的答案，下面进行了更改，以获得预期的功能：

<tx:annotation-driven transaction-manager="txManager1"/> 

<bean id="txManager1" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
    <qualifier value="txManager1"/> 
    <property name="dataSource" ref="dataSource2"/> 
</bean> 

<bean id="txManager2" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
    <qualifier value="txManager2"/> 
    <property name="dataSource" ref="dataSource3"/> 
</bean> 

@Qualifier("dataSource")应该已被纠正（在我的部分错字）：

// Read only from datasource 
    @Autowired 
    @Qualifier("dataSource1") 
    public void setDataSource1(DataSource ds) { 
     template = new NamedParameterJdbcTemplate(ds); 
    } 

Answer 1

您的配置几乎没有问题：

<property name="dataSource2" ref="dataSource2"/> 
<property name="dataSource3" ref="dataSource3"/> 

豆名是不同的，但属性名称都没有。您应该将其更改为：

<property name="dataSource" ref="dataSource2"/> 
<property name="dataSource" ref="dataSource3"/> 

例如：分别在txManager1和txManager2 bean的setter属性中。

第二：@Qualifier("dataSource2")和@Qualifier("dataSource3")错误，因为您正在限定TX管理器bean，而不是数据源bean。

您也可以使用@Resource("dataSource2")和@Resource("dataSource3")，或者限定数据源bean。

第三：@Qualifier("dataSource")。请注意，它不是投诉与限定符和豆的名字（注意：这是dataSource1）

作为最后一件事，你已经定义了tx:annotation-driven。它期望一个事务管理器，其bean名称为transactionManager。你也没有给它的bean定义，所以这也会失败。