发表于： 2017-04-23 01:05:08

4 946

今天完成的事情：

1.学习在 Spring 中使用 Hibernate ，未完成


明天计划的事情：

1.学习 SpringJDBC

2.学习 Hibernate 中的配置文件和映射文件到底在说什么

3.完成事务管理的 demo 


遇到的问题：

1.遇到 JDBCDriver 与 MySQL 版本不匹配的问题

2.如果方便的话看下我的这个代码有什么问题

这是报错

警告: Exception encountered during context initialization - cancelling refresh attempt

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adminCheckImpl' defined in file [D:\Development\JSP\SpringLearning17\target\classes\com\draper\service\AdminCheckImpl.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txAdvice': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in URL [file:/D:/Development/JSP/SpringLearning17/target/classes/Application-Context.xml]: Initialization of bean failed; nested exception is java.lang.NullPointerException

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)

at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:835)

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)

at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:125)

at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)

at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)

at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)

at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)

at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)

at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)

at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)

at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)

at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

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:363)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)

at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

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:497)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txAdvice': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in URL [file:/D:/Development/JSP/SpringLearning17/target/classes/Application-Context.xml]: Initialization of bean failed; nested exception is java.lang.NullPointerException

at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)

at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:201)

at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.getAdvice(AbstractBeanFactoryPointcutAdvisor.java:88)

at org.springframework.aop.aspectj.AspectJProxyUtils.isAspectJAdvice(AspectJProxyUtils.java:67)

at org.springframework.aop.aspectj.AspectJProxyUtils.makeAdvisorChainAspectJCapableIfNecessary(AspectJProxyUtils.java:49)

at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.extendAdvisors(AspectJAwareAdvisorAutoProxyCreator.java:97)

at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:89)

at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:69)

at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:330)

at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:293)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)

... 43 more


Spring 配置文件：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd">


    <context:component-scan base-package="com.draper.dao"/>
    <context:component-scan base-package="com.draper.service"/>

    <bean id="adminCheck" class="com.draper.service.AdminCheckImpl"/>

    <!--声明数据源-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/hibernatelearning"/>
        <property name="username" value="Draper"/>
        <property name="password" value="Draper0523"/>
    </bean>

    <!--hibernate 配置数据源 及 设置配置文件 和 映射文件-->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" lazy-init="false">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="hibernate.cfg.xml"/>
        <property name="mappingLocations" value="hibernate.hbm.xml"/>
    </bean>

    <!--配置 Spring 声明式事务-->
    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="* is*(..)" read-only="true"/>
        </tx:attributes>
    </tx:advice>

    <!--aop 的切面-->
    <aop:aspectj-autoproxy/>
    <aop:config>
        <aop:pointcut id="is" expression="execution(* is*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="is"/>
    </aop:config>


    <bean id="userDao" class="com.draper.dao.UserDao"/>

    <bean id="user" class="com.draper.domain.User">
        <property name="id" value="1"/>
        <property name="name" value="小俊"/>
    </bean>

    <bean id="adminDao" class="com.draper.dao.AdminDao"/>

    <bean id="admin" class="com.draper.domain.Admin">
        <property name="id" value="1"/>
        <property name="account" value="admin"/>
        <property name="password" value="admin"/>
    </bean>

</beans>

hibernate.cfg.xml

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
    <session-factory>
        
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <property name="hibernate.show_sql">true</property>
        <property name="hbm2ddl.auto">update</property>

    </session-factory>
</hibernate-configuration>  

hibernate.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2016-3-15 16:30:05 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
    <class name="com.draper.domain.Admin" table="admin">
        <id name="id" type="java.lang.Integer">
            <column name="id"/>
        </id>
        <property name="account" type="java.lang.String">
            <column name="account"/>
        </property>
        <property name="password" type="java.lang.String">
            <column name="password"/>
        </property>
    </class>
</hibernate-mapping>

AdminCheckImpl

package com.draper.service;

import com.draper.dao.AdminDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * Created by Draper_HXY on 2017/4/22 12:59.
 * Email: Draper_HXY@163.com.
 */
@Service
public class AdminCheckImpl implements AdminCheck {

       private AdminDao adminDao;

    public boolean isSuccess(AdminDao adminDao) {
               return false;
    }

       @Autowired
    public void setAdminDao(AdminDao adminDao) {
               this.adminDao = adminDao;
    }
}

Admin

package com.draper.domain;

/**
 * Created by Draper_HXY on 2017/4/22 12:54.
 * Email: Draper_HXY@163.com.
 */
public class Admin {

       private int id;
    private String account;
    private String password;


    public String getAccount() {
               return account;
    }

       public void setAccount(String account) {
               this.account = account;
    }

       public String getPassword() {
               return password;
    }

       public void setPassword(String password) {
               this.password = password;
    }

       @Override
    public String toString() {
               return "account:" + account + "\n"
                + "password:" + password;
    }

       public int getId() {
               return id;
    }

       public void setId(int id) {
               this.id = id;
    }
}

测试

package com.draper.dao;

import com.draper.service.AdminCheck;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * Created by Draper_HXY on 2017/4/22 12:48.
 * Email: Draper_HXY@163.com.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:Application-Context.xml"})
public class UserServiceTest extends AbstractJUnit4SpringContextTests {

       @Autowired
    AdminCheck adminCheck;

    @Autowired
    AdminDao adminDao;

    @Test
    public void testAutoInject() {
        Assert.assertEquals(false, adminCheck.isSuccess(adminDao));
    }

}

我的想法是 tx:advice 这个标签配置错了，导致 tx:davice 下面的各项属性都找不到，但我就是没法找到原因，望师兄解惑

收获：

1.在 Idea 中使用 MySQL 非常爽，支持使用 SQL 语句和可视化操作

2.稍微看了下 Hibernate 和 Mybatis 的区别，感觉虽然上手比较难，但是学会 Hibernate 就容易掌握 MyBats，虽然接触不到 SQL 语句，但是里面的知识也很庞大


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