Day 7 Spring 整合第三方框架

news2025/1/17 5:57:49

xml整合第三方框架有两种整合方案:

不需要自定义名空间，不需要使用Spring的配置文件配置第三方框架本身内容，例如: MyBatis;

需要引入第三方框架命名空间，需要使用Spring的配置文件配置第三方框架本身内容，例如: Dubbo.

1 整合MyBatis

Spring整合MyBatis的步骤如下

导入MyBatis整合Spring的相关坐标;

编写Mapper和Mapper.xml;

配置SqlSessionFactoryBean和MapperScannerConfigurer;

编写测试代码

创建一个简单的数据库方便测试，数据如下：

创建pojo

public class User {
    private int id;
    private String username;
    private String password;

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

    public void setUsername(String username) {
        this.username = username;
    }

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

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

创建mapper

public interface UserMapper {
    /**
     *
     * @return
     */
    List<User> findAll();
}

创建mapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.msf.mapper.UserMapper">
    <select id="findAll" resultType="cn.msf.pojo.User">
        select * from tb_user
    </select>
</mapper>

spring的xml文件

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
      <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
      <property name="username" value="xxxx"></property>
      <property name="password" value="xxxx"></property>
      <property name="url" value="jdbc:mysql://localhost:3307/mybatis?useSSL=true&amp;useUnicode=true&amp;characterEncoding=UTF-8"></property>
   </bean>
   <!--配置SqlSessionFactoryBean，将SqlSessionFactoryBean放到容器-->
   <bean class="org.mybatis.spring.SqlSessionFactoryBean">
      <property name="dataSource" ref="dataSource"></property>
   </bean>
   <!--MapperScannerConfigurer，扫描指定的包将mapper对象放到容器-->
   <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <property name="basePackage" value="cn.msf.mapper"></property>
   </bean>

   <bean id="userService" class="cn.msf.service.impl.UserServiceImpl">
      <property name="userDao" ref="userDao"></property>
      <property name="userMapper" ref="userMapper"></property>
<!--      <property name="username" value="msf"></property>-->
   </bean>

测试代码：