不能在春天創造豆MVC

創建JDBC模板類從MySQL查詢。我發現從here的教程，但我不能創建jdbc模板的bean。不能在春天創造豆MVC

我使用NetBeans生成Spring MVC的項目

這裏是我的applicationContext.xml

<?xml version='1.0' encoding='UTF-8' ?> 
<!-- was: <?xml version="1.0" encoding="UTF-8"?> --> 
<beans xmlns="http://www.springframework.org/schema/beans" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xmlns:p="http://www.springframework.org/schema/p" 
     xmlns:aop="http://www.springframework.org/schema/aop" 
     xmlns:context="http://www.springframework.org/schema/context" 
     xmlns:jee="http://www.springframework.org/schema/jee" 
     xmlns:tx="http://www.springframework.org/schema/tx" 
     xmlns:task="http://www.springframework.org/schema/task" 
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> 

    <bean id="myDataSource" 
       class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
     <property name="driverClassName" value="com.mysql.jdbc.Driver" /> 
     <property name="url" value="jdbc:mysql://localhost:3306/stepapps" /> 
     <property name="username" value="root" /> 
     <property name="password" value="" /> 
    </bean> 

    <bean id="userJdbcTemplate" class="id.co.traveler.jdbcTemplate.UserJDBCTemplate"> 
     <property name="dataSource" ref="myDataSource"/> 
    </bean> 

    </beans>

和錯誤日誌是在這裏

SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userJdbcTemplate' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'org.springframework.jdbc.datasource.DriverManagerDataSource' to required type 'org.apache.tomcat.jdbc.pool.DataSource' for property 'dataSource'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.springframework.jdbc.datasource.DriverManagerDataSource] to required type [org.apache.tomcat.jdbc.pool.DataSource] for property 'dataSource': no matching editors or conversion strategy found 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) 
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) 
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) 
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) 
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) 
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) 
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633) 
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:656) 
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:535) 
    at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1461) 
    at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:483) 
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301) 
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) 
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) 
    at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1445) 
    at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:860) 
    at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:357) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:611) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'org.springframework.jdbc.datasource.DriverManagerDataSource' to required type 'org.apache.tomcat.jdbc.pool.DataSource' for property 'dataSource'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.springframework.jdbc.datasource.DriverManagerDataSource] to required type [org.apache.tomcat.jdbc.pool.DataSource] for property 'dataSource': no matching editors or conversion strategy found 
    at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:474) 
    at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:511) 
    at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:505) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1502) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1461) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1197) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) 
    ... 50 more 
Caused by: java.lang.IllegalStateException: Cannot convert value of type [org.springframework.jdbc.datasource.DriverManagerDataSource] to required type [org.apache.tomcat.jdbc.pool.DataSource] for property 'dataSource': no matching editors or conversion strategy found 
    at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:267) 
    at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:459) 
    ... 56 more

來源

2014-10-02 Still Newbie

你id.co.traveler.jdbcTemplate.UserJDBCTemplate類看起來有一個物業dataSource這是一個org.apache.tomcat.jdbc.pool.DataSource。你可能希望它是一個javax.sql.DataSource。

來源

2014-10-02 16:42:30 ryanp

YESSS我沒有注意到，我錯了要導入的數據源！解決了錯誤！謝謝 – 2014-10-02 16:48:50

你的錯誤表明，你有你的模板類不同的數據源引用。在Spring配置文件中，您可以將數據源配置爲apache，或者您可以更改模板類中的類的引用。你可以將你的spring代碼配置爲apache提供的數據源，如下所示。

<bean id="myDataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close"> 
      <property name="driverClassName" value="com.mysql.jdbc.Driver" /> 
     <property name="url" value="jdbc:mysql://localhost:3306/stepapps" /> 
     <property name="username" value="root" /> 
     <property name="password" value="" /> 
</bean>

來源

2014-10-02 16:45:25

在id.co.traveler.jdbcTemplate.UserJDBCTemplate爲外地dataSource，它有org.apache.tomcat.jdbc.pool.DataSource類型，更改爲javax.sql.DataSource

來源

2014-10-02 16:46:01

不能在春天創造豆MVC

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