Mybatis-Spring1.0.0与Mybatis-Spring3.0.0版本在与spring整合时的区别_mybatis-spring版本

一、概述：

现在网上的大多数教程都是mybatis-spring1版本与spring整合，而现在spring已更新到6.0相应的mybatis-spring也更新到3.0这两个版本在配置spring配置文件上还是有差别的

---

二、环境：

·IDE2021

·jdk17

pom文件：

<?xml version="1.0" encoding="UTF-8"?>
 
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
 
  <groupId>com.bjpowernode</groupId>
  <artifactId>spring_sm</artifactId>
  <version>1.0-SNAPSHOT</version>
 
  <name>spring_sm</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>
 
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>
 
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>6.1.3</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>6.1.4</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>6.1.3</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>6.1.4</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>3.0.3</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.22</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.2.8</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.15</version>
    </dependency>
  </dependencies>
 
  <build>
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
      </resource>
      <resource>
        <directory>src/main/resources</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>
  </build>
</project>

---

三、目录结构和spring配置文件

applicationContext_mapper.xml

<?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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
 
    <!--扫描器，加载properties文件-->
    <context:property-placeholder location="jdbc.properties"></context:property-placeholder>
    <!--使用druid连接池，创建数据源-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>
    <!--配置sqlSessionFactoyBean类-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--配置数据源-->
        <property name="dataSource" ref="dataSource"></property>
        <!--配饰Mybatis核心配置文件-->
        <property name="configuration" value="SqlMapConfig.xml"></property>
        <!--设置实体类别名-->
        <property name="typeAliasesPackage" value="com.bjpowernode.pojo"></property>
    </bean>
 
    <!--注册mapper文件-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--使用basePackage是批量注册，注册一个包下的所有实体类-->
        <property name="basePackage" value="com.bjpowernode.mapper"></property>
    </bean>
</beans>

applicationContext_service.xml

<?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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<!--倒入mapper的配置文件-->
    <import resource="applicationContext_mapper.xml"></import>
    <!--添加包扫描-->
    <context:component-scan base-package="com.bjpowernode.service.impl"></context:component-scan>
    <!--事务处理-->
</beans>

四、问题及解决

主要信息： 

Failed to convert property value of type 'java.lang.String' to required type 'org.apache.ibatis.session.Configuration' for property 'configuration'; Cannot convert value of type 'java.lang.String' to required type 'org.apache.ibatis.session.Configuration' for property 'configuration': no matching editors or conversion strategy found

意思是org.apache.ibatis.session.Configuration类中有一个属性configuration的类型不匹配，也就是说我们给configuration传了一个不符合他类型的值

原因：

旧版mybatis中配置SqlSessionFactoryBean时有一个配置叫configuration，在新版的mybatis中他变为了configLocation！，把applicationContext_service.xml文件里SqlSessionFactoryBean中属性名改下就可以了