SpringBoot实现多数据源配置的示例详解

mybatis.config-location=classpath:mybatis/mybatis-config.xml
 
spring.datasource.test1.jdbc-url=jdbc:mysql://localhost:3306/test1?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.test1.username=root
spring.datasource.test1.password=root
spring.datasource.test1.driver-class-name=com.mysql.cj.jdbc.Driver
 
spring.datasource.test2.jdbc-url=jdbc:mysql://localhost:3306/test2?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.test2.username=root
spring.datasource.test2.password=root
spring.datasource.test2.driver-class-name=com.mysql.cj.jdbc.Driver

@Configuration
@MapperScan(basePackages = "com.test.mapper.test1", sqlSessionTemplateRef  = "test1SqlSessionTemplate")
public class DataSource1Config {
 
    @Bean(name = "test1DataSource")
    @ConfigurationProperties(prefix = "spring.datasource.test1")
    @Primary
    public DataSource testDataSource() {
        return DataSourceBuilder.create().build();
 
    }
 
    @Bean(name = "test1SqlSessionFactory")
    @Primary
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("test1DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/mapper/test1/*.xml"));
        return bean.getObject();
    }
 
    @Bean(name = "test1TransactionManager")
    @Primary
    public DataSourceTransactionManager testTransactionManager(@Qualifier("test1DataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }
 
    @Bean(name = "test1SqlSessionTemplate")
    @Primary
    public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("test1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

@MapperScan(basePackages = "com.test.mapper.test1", sqlSessionTemplateRef  = "test1SqlSessionTemplate")

public interface User1Mapper {
 
    List<UserEntity> getAll();
 
    UserEntity getOne(Long id);
 
    void insert(UserEntity user);
 
    void update(UserEntity user);
 
    void delete(Long id);
 
}

<mapper namespace="com.test.mapper.test1.User1Mapper" >
    <resultMap id="BaseResultMap" type="com.test.model.User" >
        <id column="id" property="id" jdbcType="BIGINT" />
        <result column="userName" property="userName" jdbcType="VARCHAR" />
        <result column="passWord" property="passWord" jdbcType="VARCHAR" />
        <result column="user_sex" property="userSex" javaType="com.test.enums.UserSexEnum"/>
        <result column="nick_name" property="nickName" jdbcType="VARCHAR" />
    </resultMap>
 
    <sql id="Base_Column_List" >
        id, userName, passWord, user_sex, nick_name
    </sql>
 
    <select id="getAll" resultMap="BaseResultMap"  >
       SELECT 
       <include refid="Base_Column_List" />
     FROM users
    </select>
 
    <select id="getOne" parameterType="java.lang.Long" resultMap="BaseResultMap" >
        SELECT 
       <include refid="Base_Column_List" />
     FROM users
     WHERE id = #{id}
    </select>
 
    <insert id="insert" parameterType="com.test.model.User" >
       INSERT INTO 
          users
          (userName,passWord,user_sex) 
        VALUES
          (#{userName}, #{passWord}, #{userSex})
    </insert>
 
    <update id="update" parameterType="com.test.model.User" >
       UPDATE 
          users 
       SET 
        <if test="userName != null">userName = #{userName},</if>
        <if test="passWord != null">passWord = #{passWord},</if>
        nick_name = #{nickName}
       WHERE 
          id = #{id}
    </update>
 
    <delete id="delete" parameterType="java.lang.Long" >
       DELETE FROM
           users 
       WHERE 
           id =#{id}
    </delete>
 
</mapper>

@RestController
public class UserController {
 
    @Autowired
    private User1Mapper user1Mapper;
 
    @Autowired
    private User2Mapper user2Mapper;
 
    @RequestMapping("/getUsers")
    public List<UserEntity> getUsers() {
        List<UserEntity> users=user1Mapper.getAll();
        return users;
    }
 
    @RequestMapping("/getUser")
    public UserEntity getUser(Long id) {
        UserEntity user=user2Mapper.getOne(id);
        return user;
    }
 
    @RequestMapping("/add")
    public void save(UserEntity user) {
        user2Mapper.insert(user);
    }
 
    @RequestMapping(value="update")
    public void update(UserEntity user) {
        user2Mapper.update(user);
    }
 
    @RequestMapping(value="/delete/{id}"
    public void delete(@PathVariable("id") Long id) {
        user1Mapper.delete(id);
    }
 
}