如何使用MyBatis工具类读取配置文件？

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javaMyBatis读取配置文件工具类package com.mimidai.app.config;

import com.alibaba.druid.pool.DruidDataSourceFactory;import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.SqlSessionFactoryBean;import org.mybatis.spring.SqlSessionTemplate;

mybatis读取配置文件工具类

package com.mimidai.app.config; import com.alibaba.druid.pool.DruidDataSourceFactory; 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.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.env.Environment; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import java.util.Properties; import javax.sql.DataSource; /** * springboot集成mybatis的基本入口 * 1）创建数据源 * 2）创建SqlSessionFactory */ @SuppressWarnings("all") @Configuration //该注解类似于spring配置文件 @MapperScan(basePackages = "com.mimidai") public class MyBatisConfig { @Autowired private Environment env; /** * 创建数据源 * * @Primary 该注解表示在同一个接口有多个实现类可以注入的时候，默认选择哪一个，而不是让@autowire注解报错 */ @Bean public DataSource getDataSource() throws Exception { Properties props = new Properties(); props.put("driverClassName", env.getProperty("jdbc.driverClassName")); props.put("url", env.getProperty("jdbc.url")); props.put("username", env.getProperty("jdbc.username")); props.put("password", env.getProperty("jdbc.password")); return DruidDataSourceFactory.createDataSource(props); } /** * 根据数据源创建SqlSessionFactory */ @Bean public SqlSessionFactory sqlSessionFactory(DataSource ds) throws Exception { SqlSessionFactoryBean fb = new SqlSessionFactoryBean(); fb.setDataSource(ds); fb.setTypeAliasesPackage(env.getProperty("mybatis.typeAliasesPackage")); fb.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(env.getProperty("mybatis.mapperLocations")));//指定xml文件位置 return fb.getObject(); } } pom文件

4.0.0 com.mimidai app 0.0.1-SNAPSHOT

jar app app project for Spring Boot

org.springframework.boot spring-boot-starter-parent 1.5.6.RELEASE

UTF-8

UTF-8 1.8 org.springframework.boot spring-boot-starter org.mybatis.spring.boot mybatis-spring-boot-starter 1.3.0 com.alibaba druid 1.0.27 mysql mysql-connector-java runtime org.springframework.boot spring-boot-starter-test test

org.springframework.boot spring-boot-maven-plugin application.properties

mybatis.typeAliasesPackage=com.mimidai.app.entity mybatis.mapperLocations=classpath:mapper/*.xml jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://XXXXXXXX?characterEncoding=utf-8 jdbc.username=root jdbc.password=XXXXXXX