上一篇文章：Spring Boot教程 - 整合Mybatis（基于XML配置） 介绍了 Spring Boot集成Mybatis 基于XML方式的配置，本文将重点介绍 注解方式配置Mybatis 。
开发环境
- JDK 1.8
- Maven 3.3
- Spring Boot 1.5.8.RELEASE
- Mybatis 3.4.4
配置
首先引入spring-boot-starter-parent:
<!-- Inherit defaults from Spring Boot -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.RELEASE</version>
</parent>
添加Mybatis依赖：
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
<!-- db-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connector.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
</dependencies>
application.yml
server:
port: 9000
spring:
datasource:
url: jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
username: root
password: root
driver-class-name: com.mysql.jdbc.Driver
MybatisConfiguration
package springboot.tutorials.mybatis.annotation.config;
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
/**
* @author Ricky Fung
*/
@Configuration
@MapperScan(basePackages = "springboot.tutorials.mybatis.annotation.mapper",
sqlSessionFactoryRef = "sqlSessionFactory")
public class MybatisConfiguration {
static final String MAPPER_LOCATION = "classpath:mapper/*.xml";
@Value("${spring.datasource.url}")
private String url;
@Value("${spring.datasource.username}")
private String user;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driver-class-name}")
private String driverClass;
@Bean(name = "sqlSessionFactory")
public SqlSessionFactory sqlSessionFactory(@Qualifier("dataSource") DataSource dataSource)
throws Exception {
final SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
sqlSessionFactoryBean.setDataSource(dataSource);
sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources(MAPPER_LOCATION));
return sqlSessionFactoryBean.getObject();
}
@Bean(name = "dataSource")
public DataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName(driverClass);
dataSource.setUrl(url);
dataSource.setUsername(user);
dataSource.setPassword(password);
return dataSource;
}
@Bean(name = "transactionManager")
public DataSourceTransactionManager transactionManager() {
return new DataSourceTransactionManager(dataSource());
}
}
涉及到的Mybatis Mapper类和Mapper文件 建议通过Mybatis-Generator来自动生成，简单、高效。
启动类App
package springboot.tutorials.mybatis.annotation;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* @author Ricky Fung
*/
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
