https://blog.csdn.net/qq_32719003/article/details/72123917
springboot通过java bean集成通用mapper的两种方式
前言:公司开发的框架基于springboot深度封装,只能使用java bean的方式进行项目配置。
第一种:
1.引入POM坐标,需要同时引入通用mapper和jpa
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<!-- 建议使用最新版本,最新版本请从项目首页查找 -->
<version>3.4.</version>
</dependency>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0</version>
</dependency>
2.将自己的mapper文件继承通用mapper的BaseMapper
@Repository
public interface RatWaiterHitRewardMapper extends BaseMapper<RatWaiterHitReward>{
}
3.编写JAVA BEAN配置类
package com.eparty.ccp.rate.config; import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import tk.mybatis.mapper.code.Style;
import tk.mybatis.mapper.common.BaseMapper;
import tk.mybatis.spring.mapper.MapperScannerConfigurer; import java.util.Properties; /**
* @auther 张斌
* 时间: 2017-5-12
*/
@Configuration
public class TkMybatisConfig { @Bean(name="mapperHelper")
public MapperScannerConfigurer mapperHelper(){
Properties properties = new Properties();
properties.setProperty("mappers",BaseMapper.class.getName());
properties.setProperty("IDENTITY","MYSQL"); // 数据库方言(主要用于:取回主键的方式)
properties.setProperty("notEmpty","false"); // insert和update中,是否判断字符串类型!='',少数方法会用到
properties.setProperty("style", Style.camelhump.name()); MapperScannerConfigurer scan = new MapperScannerConfigurer();
scan.setSqlSessionFactoryBeanName("sqlSessionFactory"); // 多数据源时,必须配置
scan.setBasePackage("com.eparty.ccp.rate.mapper");//mapper.java文件的路径
scan.setMarkerInterface(BaseMapper.class); // 直接继承了BaseDao接口的才会被扫描,basePackage可以配置的范围更大。
scan.setProperties(properties); return scan;
}
/* }*/ }
配置完毕。
第二种(推荐): 、配置mybatis application.properties(配置文件)
spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&rewriteBatchedStatements=false&autoReconnect=true
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver ##指向mapper的xml文件位置
mybatis.mapper-locations=classpath*:mapper/*Mapper.xml
2、引入依赖(springboot专用)
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>RELEASE</version>
</dependency>
3、配置启动类
package com.eparty.fuxi.abner; import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication
@MapperScan(basePackages = "com.eparty.fuxi.abner.mapper")//mapper接口的路径
public class BootApplication { public static void main(String[] args) {
SpringApplication.run(BootApplication.class, args);
} }
到此为止基本配置已经完毕。
4、model类的配置(补充)
类名上加注解
@Table(name = "tb_user")
类的主键上加注解
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
5、mapper接口的配置(补充)
package com.eparty.fuxi.abner.mapper; import com.eparty.fuxi.abner.model.auth.user.User;
import org.springframework.stereotype.Repository;
import tk.mybatis.mapper.common.Mapper; @Repository
public interface UserMapper extends Mapper<User> {
}
所有配置全部完毕。