@Author Jack Wang
转载请注明出处,http://www.jianshu.com/p/8138ccd0d900
Spring Boot 集成MyBatis有两种方式，一种简单的方式就是使用MyBatis官方提供的：mybatis-spring-boot-starter
另外一种方式就是仍然用类似mybatis-spring的配置方式，这种方式需要自己写一些代码，但是可以很方便的控制MyBatis的各项配置。
2018.09.10 , 第一次更新
一：mybatis-spring-boot-starter方式【推荐】
1.1 创建Maven工程,搭建包结构
或者使用springboot initializer自动创建工程, http://start.spring.io/
1.2 构建环境,使用mybatis generatorConfig插件自动生成entity及mapper
generatorConfig.xml ：
注意mysql的jar包及数据库连接属性以及表格要与实际情况一一对应。
mybatis-generator插件在eclipse market商店搜索插件下载即可。右键generatorConfig.xml运行插件就可以自动生成。
1.3 pom添加Maven依赖，properties中添加配置
pom :
org.springframework.boot
spring-boot-starter-parent
1.5.8.RELEASE
UTF-8
UTF-8
1.8
org.springframework.boot
spring-boot-starter-web
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.1.1
mysql
mysql-connector-java
runtime
org.springframework.boot
spring-boot-devtools
true
org.springframework.boot
spring-boot-maven-plugin
true
================================================================================
application.properties :
spring.datasource.url=jdbc:mysql://localhost:3306/license_system
spring.datasource.username=root
spring.datasource.password=jacky
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
mybatis.mapperLocations=classpath*:com/dream/mybatis/mapper/*.xml
***注意：这里mybatis.mapperLocations=classpath*:com/dream/mybatis/mapper/*.xml是配置mapper.xml的路径的。
确保路径正确,并且xml中namespace对应的Mapper接口无误,否则可能会报异常:
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.dream.mybatis.dao.WarehouseMapper.insert
1.4 Springboot启动入口Application
@SpringBootApplication
@MapperScan("com.dream.mybatis.dao")
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
注意：这里配置的@MapperScan("xx.xx.xx")是配置Mapper接口的位置，确保位置对应正确
到这里springboot集成mybatis就已经结束了，真正需要我们进行配置的只有几点：
1. 添加maven依赖。mybatis-spring-boot-starter及mysql驱动
2. 配置application.properties中mapper.xml的位置。mybatis.mapperLocations=classpath*:com/dream/mybatis/mapper/*.xml
3. Application.java中Mapper接口的位置。@MapperScan("com.dream.mybatis.dao")
事务的支持还和平常使用一样,在Service上添加@Transactional注解即可。
@Service
@Transactional
public class WarehouseServiceImpl implements WarehouseService {
@Autowired
private WarehouseMapper warehouseMapper;
@Override
public void insert() {
Warehouse record = new Warehouse();
record.setId(888L);
record.setName("测试回滚");
warehouseMapper.insert(record);
int i = 1/0;
}
}
二、mybatis-spring方式
2.1 创建Maven工程,搭建包结构
包结构与方式一一样
2.2 构建环境,使用mybatis generatorConfig插件自动生成entiry及mapper(略)
2.3 pom添加Maven依赖,properties中添加配置
1. pom中添加的依赖与方式一不同,这里是使用mybatis-spring依赖进行集成
org.springframework.boot
spring-boot-starter-parent
1.5.8.RELEASE
UTF-8
UTF-8
1.8
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-jdbc
org.mybatis
mybatis
3.2.1
org.mybatis
mybatis-spring
1.3.1
mysql
mysql-connector-java
org.springframework.boot
spring-boot-devtools
true
org.springframework.boot
spring-boot-maven-plugin
true
-------------------------------------------------------------------------------------------------
2. application.properties只需要添加springboot数据库连接的配置即可
spring.datasource.url=jdbc:mysql://localhost:3306/license_system
spring.datasource.username=root
spring.datasource.password=jacky
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
2.4 MyBatis配置类
import java.util.Properties;
import javax.sql.DataSource;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.context.annotation.Bean;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;
import com.github.pagehelper.PageHelper;
@SpringBootConfiguration
@MapperScan({"invengo.cn.base.mapper"})
@AutoConfigureAfter(DBConfiguration.class)
public class MyBatisConfig implements TransactionManagementConfigurer {
// Springboot根据properties自动完成配置的DataSource
@Autowired
private DataSource dataSource;
@Bean
public SqlSessionFactory sqlSessionFactoryBean(PageHelper pageHelper) throws Exception {
SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
sqlSessionFactoryBean.setDataSource(dataSource);
PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath*:mybatis/*.xml"));
// sqlSessionFactoryBean.setPlugins(new Interceptor[] { pageHelper });
return sqlSessionFactoryBean.getObject();
}
@Bean
@Override
public PlatformTransactionManager annotationDrivenTransactionManager() {
return new DataSourceTransactionManager(dataSource);
}
// 分页支持
/*@Bean
public PageHelper pageHelper() {
PageHelper pageHelper = new PageHelper();
Properties properties = new Properties();
properties.setProperty("offsetAsPageNum", "true");
properties.setProperty("rowBoundsWithCount", "true");
properties.setProperty("reasonable", "true");
properties.setProperty("dialect", "mysql"); // 配置mysql数据库的方言
pageHelper.setProperties(properties);
return pageHelper;
}*/
}
注意:
1. @MapperScan("com.dream.mybatis.dao")用于扫描Mapper接口,注意路径
2. sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath*:mybatis/*.xml"));用于配置mapper.xml的路径
3. 注释的部分为使用该方式时对PageHelper插件的支持,后面章节会使用到PageHelper插件
事务的支持还和平常使用一样,在Service上添加@Transactional注解即可。
2.5 Application启动类
@SpringBootApplication
public class PayApplication {
private static Logger logger = Logger.getLogger(PayApplication.class);
public static void main(String[] args) {
SpringApplication.run(PayApplication.class, args);
logger.info("SpringBoot Start Success");
}
}
