無法在春季捕獲休眠異常

Question

我是 Spring 框架的新手。 使用 Spring 4.3 和 Hibernate 4 開發 Web 應用程序。

我配置了所需的bean。

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName"
        value="${oracle.driver-calss}" />
    <property name="url" value="${oracle.Url}" />
    <property name="username" value="${oracle.userName}" />
    <property name="password" value="${oracle.password}" />
</bean>

<bean id="sessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">${oracle.dialect}</prop>
            <prop key="hibernate.hbm2ddl.auto">${oracle.hbm2ddl}</prop>
            <prop key="hibernate.show-sql">${oracle.show-sql}</prop>
        </props>
    </property>
    <property name="dataSource" ref="dataSource" />
    <property name="packagesToScan" value="com.wmosIIBL.model"></property>
</bean>

<bean id="transactionManager"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>

<tx:annotation-driven />

這是我的服務類

@Service
public class ItemIBLService {

    @Autowired
    ItemIBLDaoImpl itemIBLDaoImpl;

    @Transactional
    public ItemInvnByLcn getItemIBLByDspLocn(String dspLocn) {
        ItemInvnByLcn itemInvnByLcn = null;
        try {
            itemIBLDaoImpl.getIBLByDspLocn(dspLocn);
        } catch (DataAccessException dataAccessException) {
            System.out.println(dataAccessException.getMessage().toString());
        }
        return itemInvnByLcn;
    }

}

DAO Impl 代碼：我故意犯一些錯誤來創建異常。 所以請忽略代碼錯誤並幫助我找到如何捕獲拋出的異常。

@Repository
public class ItemIBLDaoImpl {

    @Autowired
    SessionFactory sessionFactory;

    public ItemInvnByLcn getIBLByDspLocn(String dspLocn) {
        Session currentSession = sessionFactory.getCurrentSession();
        SQLQuery sqlQuery = currentSession.createSQLQuery("SELECT * FROM WHERE ITEMINVNBYLOCN WHERE LOCATION= :DSPLOCN");
        sqlQuery.setParameter("SDPLOCN", dspLocn);
        List iiblList = sqlQuery.list();
        System.out.println(iiblList.toString());
        return (ItemInvnByLcn) iiblList.get(0);
    }

}

Hibernate 正在拋出以下異常，我無法在服務類中捕獲異常。

org.hibernate.QueryParameterException: could not locate named parameter [SDPLOCN]
    at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:148)
    at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterExpectedType(ParameterMetadata.java:165)
    at org.hibernate.internal.AbstractQueryImpl.determineType(AbstractQueryImpl.java:523)
    at org.hibernate.internal.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:493)
    at com.wmosIIBL.dao.ItemIBLDaoImpl.getIBLByDspLocn(ItemIBLDaoImpl.java:22)
    at com.wmosIIBL.service.ItemIBLService.getItemIBLByDspLocn(ItemIBLService.java:22)
    at com.wmosIIBL.service.ItemIBLService$$FastClassBySpringCGLIB$$51d359cb.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656)
    at com.wmosIIBL.service.ItemIBLService$$EnhancerBySpringCGLIB$$eecd7652.getItemIBLByDspLocn(<generated>)
    at com.wmosIIBL.controller.ItemIBLController.getItemInvnByLocn(ItemIBLController.java:30)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:180)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1136)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Unknown Source)

我想我在使用中遺漏了一些東西。 請讓我知道為什么即使我在服務層中使用 @Service 和 @Transactional 並在 Dao 層中使用 @Repository ，我也無法在 spring 服務類中捕獲 hibernate 拋出的異常。

Answer 1

org.hibernate.QueryParameterException不是DataAccessException （您試圖捕獲的那個）的子類，正如您在其javadoc 中看到的那樣。 如果您想捕獲它，您應該將此異常添加到您的 catch 塊中。 這是一個RuntimeException所以如果你像你一樣省略它，編譯器不會說什么。

嘗試這個：

try {
    itemIBLDaoImpl.getIBLByDspLocn(dspLocn);
} catch (DataAccessException | QueryParameterException exception) {
    System.out.println(exception.getMessage());
}

Answer 2

如果您想捕獲 QueryParameterException，您將捕獲不正確的 DataAccessException。 您可以直接捕獲 QueryParameterException，也可以捕獲 QueryException 或 HibernateException。

我建議為所有與查詢相關的異常捕獲HibernateException 。

您可以在此處遵循 DataAccessException 的層次結構https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/dao/DataAccessException.html

和 QueryParameterException https://docs.jboss.org/hibernate/orm/5.2/javadocs/org/hibernate/QueryParameterException.html

DataAccessException 更像是一種可恢復的東西，這意味着從代碼的角度來看，一切都很好，當命中數據庫時，發生了一些不好的事情。

但是您要做的是沒有到達數據庫的東西，它在嘗試創建查詢時失敗，因此沒有處理 DataAccessException。