spring framework如何集成mybatis呢?

我们都知道，在Spring中，如果想方便使用一个框架，只需将这个框架交给SpringIOC容器
管理，然后我们就可以非常方便的使用属性注入，应用框架中的方法及属性
那么Mybatis框架如何集成到Spring框架上呢?
下文笔者将一一道来,如下所示

mybatis官网简介

MyBatis对应的github官网(https://github.com/mybatis/spring)
 里面有一个叫MyBatis Spring Adapter(MyBatis-Spring)库--我们称之为"Mybatis Spring"
她可以非常方便的将Mybatis集成到Spring中

MyBatis-Spring功能简介

springframework集成mybatis时
 可使用MyBatis-Spring,这就是MyBatis-Spring的功能
可以使MyBatis的代码无缝地整合到Spring中
   使用这个类库中的类
    Spring将会加载必要的MyBatis工厂类和session类

Spring4.X整合MyBatis3.X初级版示例分享

1.修改pom.xml,并添加依赖

MyBatis-Spring(Spring核心,AOP,JDBC)
 
<?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.mzj.springframework</groupId>
  <artifactId>springframework-mybatis</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>
 
  <name>springframework-mybatis Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.java265.com</url>
 
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <spring.version>4.3.0.RELEASE</spring.version>
  </properties>
 
  <dependencies>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>
    <!--log4j日志包 -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-core</artifactId>
      <version>2.6.1</version>
    </dependency>
    <!-- mybatis ORM框架 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.1</version>
    </dependency>
    <!-- JUnit单元测试工具 -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.10</version>
    </dependency>
 
    <!--mybatis-spring适配器 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <!--Spring框架核心库 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- aspectJ AOP 织入器 -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.9</version>
    </dependency>
    <!--Spring java数据库访问包，在本例中主要用于提供数据源 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
  </dependencies>
 
  <build>
    <finalName>springframework-mybatis</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

2.创建Spring上下文初始化配置文件
该文件取名为ApplicationContext.xml
 主要原因是“约束优于配置”的理由
  使用Web监听器加载Spring时会默认找该名称的文件

<?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:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop" 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
        http://www.springframework.org/schema/context/spring-context-4.3.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
 
    <!--1定义一个jdbc数据源，创建一个驱动管理数据源的bean -->
    <bean id="jdbcDataSource"
          class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://192.168.8.8:3306/test" />
        <property name="username" value="java265" />
        <property name="password" value="java265" />
    </bean>
 
    <!--2创建一个sql会话工厂bean，指定数据源-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="jdbcDataSource" /><!-- 指定数据源 -->
        <property name="configLocation" value="classpath:MyBatisCfg.xml"></property> <!-- 指定配置文件 -->
    </bean>
 
    <!--3创建一个UserTypeDAO-->
    <bean id="userTypeDAO" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <!--指定映射文件 -->
        <property name="mapperInterface" value="com.java265.springframework.mybatis.mapping.UserTypeDAO"></property>
        <!-- 指定sql会话工厂-->
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>
    <!--下面的配置暂时未使用 -->
    <context:component-scan base-package="com.java265">
    </context:component-scan>
    <aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>
</beans>

测试运行

package com.java265.springframework.mybatis.dao; 
import com.java265.springframework.mybatis.entities.UserType;
import com.java265.springframework.mybatis.mapping.UserTypeDAO;
import org.junit.Test;
import static org.junit.Assert.assertNotNull;
import java.util.list;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
 
public class TestMyBatisSpring01 {
    @Test
    public void test01() {
        //初始化容器
        ApplicationContext ctx=new ClassPathXmlApplicationContext("ApplicationContext.xml");
        //获得bean
        UserTypeDAO userTypeDAO=ctx.getBean("userTypeDAO",UserTypeDAO.class);
        //访问数据库
        List<UserType> usertypes=userTypeDAO.getAllUserTypes();
        for (UserType userType : usertypes) {
            System.out.println(userType);
        }
        assertNotNull(userTypes);
    }
}