spring mvc+mybatis整合读取数据源配置文件时报空指针异常，xml中写死没有问题

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spring mvc+mybatis整合读取数据源配置文件时报空指针异常，xml中写死没有问题10

我的配置：


    <context:property-placeholder location="classpath:jdbc.properties" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>

<property name="initialSize"><value>5</value></property>
        <property name="minIdle"><value>5</value></property>
<property name="removeAbandoned"><value>true</value></property>
        <property name="removeAbandonedTimeout"><value>30</value></property>
        <property name="logAbandoned"><value>true</value></property>
        <property name="maxActive"><value>50</value></property>
        <property name="maxWait"><value>30000</value></property>
</bean>

    
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
   <property name="mapperLocations" value="classpath:com/tongtech/esbserver/mapping/*.xml"></property>
        
    </bean>


    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.tongtech.esbserver.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>

MyBatis

2014年12月29日 11:19

wingfly110
20
0 0 1

查看图片附件

2个答案按时间排序按投票排序

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mybatis官方已经给出解决方案了，就是用自己的xmlns，看下面的配置，注意红色部分
<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
      xmlns:mybatis="http://mybatis.org/schema/mybatis-spring"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:task="http://www.springframework.org/schema/task"
       xsi:schemaLocation="
          http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
          http://www.springframework.org/schema/tx
          http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
          http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context-3.2.xsd
          http://www.springframework.org/schema/aop
          http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
          http://www.springframework.org/schema/task
           http://www.springframework.org/schema/task/spring-task-3.2.xsd
          http://www.springframework.org/schema/cache
          http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
          http://mybatis.org/schema/mybatis-spring
          http://mybatis.org/schema/mybatis-spring.xsd"
       default-autowire="byName">
    <context:annotation-config/>
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="${jdbc.url}"/>
        <property name="username">
            <value>${jdbc.username}</value>
        </property>
        <property name="password" value="${jdbc.password}"/>
        <property name="filters">
            <value>stat,log4j</value>
        </property>

        <property name="maxActive">
            <value>20</value>
        </property>
        <property name="initialSize">
            <value>1</value>
        </property>
        <property name="maxWait">
            <value>60000</value>
        </property>
        <property name="minIdle">
            <value>1</value>
        </property>

        <property name="timeBetweenEvictionRunsMillis">
            <value>60000</value>
        </property>
        <property name="minEvictableIdleTimeMillis">
            <value>300000</value>
        </property>

        <property name="validationQuery">
            <value>SELECT 'x'</value>
        </property>
        <property name="testWhileIdle">
            <value>true</value>
        </property>
        <property name="testOnBorrow">
            <value>false</value>
        </property>
        <property name="testOnReturn">
            <value>false</value>
        </property>

        <property name="poolPreparedStatements">
            <value>true</value>
        </property>
        <property name="maxOpenPreparedStatements">
            <value>20</value>
        </property>
    </bean>

    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

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

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <mybatis:scan base-package="com.xxx.web.dao.mapper"/>

其实关键的配置就是<mybatis:scan>这个配置项了。