因为spring 整合mybatis的过程中， 有好几种整合方式，尤其是数据源那块，经常看到不一样的配置方式，总感觉有点乱，所以今天有空总结下。

　　一、采用org.mybatis.spring.mapper.MapperScannerConfigurer

　　其实逆向工程也是这种方式

　　1、数据源配配置文件

　2、DAO文件

package com.jdd.mapper; import com.jdd.pojo.Employee; import java.util.List; public interface EmployeeMapper { public Employee getEmployeeById(int id); public List<Employee> findAllEmployees(); }

　　3、Mapper.xml 文件

　　 <?xml version="." encoding="UTF-" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper .//EN" "http://mybatis.org/dtd/mybatis--mapper.dtd"> <mapper namespace="com.jdd.mapper.EmployeeMapper"> <select id="getEmployeeById" parameterType="int" resultType="com.jdd.pojo.Employee"> <![CDATA[ select * from employee where id = #{id}; ]]> </select> <select id="findAllEmployees" resultType="com.jdd.pojo.Employee"> <![CDATA[ select * from employee where status=''; ]]> </select> </mapper>

　　这样在service类里就可以直接注入dao接口了

package com.jdd.service.impl; import com.jdd.mapper.EmployeeMapper; import com.jdd.pojo.Employee; import com.jdd.service.EmployeeService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service("employeeService") public class EmployeeServiceImpl implements EmployeeService{ @Autowired private EmployeeMapper employeeMapper; @Override public Employee getEmployeeById(int id) { return employeeMapper.getEmployeeById(id); } @Override public List<Employee> findAllEmployees() { return employeeMapper.findAllEmployees(); } }

　　　　二、 采用抽象类org.mybatis.spring.support.SqlSessionDaoSupport， 给它注入 sqlSessionFactory的方式

　　1、数据源配置文件

　　 <?xml version="." encoding="UTF-"?> <beans xmlns="http://mit(true); } unwrapped = result; } catch (Throwable var) { unwrapped = ExceptionUtil.unwrapThrowable(var); if (SqlSessionTemplate.this.exceptionTranslator != null && unwrapped instanceof PersistenceException) { SqlSessionUtils.closeSqlSession(sqlSession, SqlSessionTemplate.this.sqlSessionFactory); sqlSession = null; Throwable translated = SqlSessionTemplate.this.exceptionTranslator.translateExceptionIfPossible((PersistenceException)unwrapped); if (translated != null) { unwrapped = translated; } } throw (Throwable)unwrapped; } finally { if (sqlSession != null) { SqlSessionUtils.closeSqlSession(sqlSession, SqlSessionTemplate.this.sqlSessionFactory); } } return unwrapped; } } }

总结

以上所述是小编给大家介绍的spring 整合 mybatis 中数据源的几种配置方式，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！