SpringBoot整合MyBatis【数据库连接】

1、pom文件引入

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <!-- 测试 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!-- mysql 依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!-- springboot-web组件 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

2、application.properties配置文件

spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

3、配置sqlsessionFactiontory;

import org.mybatis.spring.SqlSessionFactoryBean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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 javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;

/**
 * SqlSession配置
 */
@Configuration
public class SqlSessionConfig {

    private Logger logger = LoggerFactory.getLogger(SqlSessionConfig.class);

    @Value("${spring.datasource.jndi-name}")
    private String dataSourceJndiName;

    @Value("${mybatis.mapper-locations}")
    private String mapperLocations;

    @Bean
    public SqlSessionFactoryBean createSqlSessionFactory() {
        SqlSessionFactoryBean sqlSessionFactoryBean = null;
        try {
            // 加载JNDI配置
            Context context = new InitialContext();
            DataSource dataSource = (DataSource)context.lookup(dataSourceJndiName);

            // 实例SessionFactory
            sqlSessionFactoryBean = new SqlSessionFactoryBean();
            // 配置数据源
            sqlSessionFactoryBean.setDataSource(dataSource);

            // 加载MyBatis配置文件
            PathMatchingResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
            // 能加载多个，所以可以配置通配符(如：classpath*:mapper/*.xml)
            sqlSessionFactoryBean.setMapperLocations(resourcePatternResolver.getResources(mapperLocations));
            // 配置mybatis的config文件(我目前用不上)
            // sqlSessionFactoryBean.setConfigLocation("mybatis-config.xml");
        } catch (Exception e) {
            logger.error("创建SqlSession连接工厂错误：{}", e);
        }
        return sqlSessionFactoryBean;
    }
}

4、创建对应的Mapper层service层就可以直接连接使用了！