Struts2+Mybatis+Spring整合增删改查实例

在我的博客首页有s2sh整合的例子，现在要做的工作就是将此工程中hibernate换成mybatis，并且使用比较流行的annotation注解来实现。首先肯定是要将hibernate的jar包全部干掉，然后加上mybatis的jar包及其与spring整合所需jar包，下面只贴主要改动的类及其配置文件：

一.mybatis配置文件mybatis-config.xml

 >
 <configuration>
     <typeAliases>
         <typeAlias alias="User" type="com.anxin.bean.User" />
         <typeAlias alias="Student" type="com.anxin.bean.Student" />
     typeAliases>
     <mappers>
         <mapper resource="com/anxin/orm/mapping/User.xml" />
         <mapper resource="com/anxin/orm/mapping/Student.xml" />
     mappers>
 configuration>

二、bean的mapper文件

Student.xml

 xml version="1.0" encoding="utf-8" ?>
 >
 <mapper namespace="Student">


         class="com.mchange.v2.c3p0.ComboPooledDataSource">


             ${driverClass}



             ${jdbcUrl}



             ${user}



             ${password}



             20



             2



             2



             20



         class="org.mybatis.spring.SqlSessionFactoryBean">

             value="classpath:mybatis-config.xml" />







         class="org.springframework.jdbc.datasource.DataSourceTransactionManager">





 四、泛型基类BaseDAOImpl.java
 package com.anxin.dao.impl;

 import java.io.Serializable;
 import java.util.List;
 import java.util.Map;

 import javax.annotation.Resource;

 import org.apache.ibatis.session.SqlSessionFactory;
 import org.mybatis.spring.support.SqlSessionDaoSupport;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;

 import com.anxin.dao.BaseDAO;
 import com.anxin.util.PageListData;

 public class BaseDAOImpl extends
         SqlSessionDaoSupport implements BaseDAO {

     public static Logger logger = LoggerFactory.getLogger(BaseDAOImpl.class);
     @Autowired(required = true)
     @Resource(name = "sqlSessionFactory")
     public void setSuperSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
         super.setSqlSessionFactory(sqlSessionFactory);
     }
     // 保存
     public T save(T entity) {
         try {
             getSqlSessionTemplate().insert(
                     entity.getClass().getSimpleName() + ".save", entity);
             return entity;
         } catch (RuntimeException re) {
             logger.error("save " + entity.getClass().getName() + " failed :{}",
                     re);
             throw re;
         }
     }
     // 更新
     public void update(T entity) {
         try {
             this.getSqlSessionTemplate().update(
                     entity.getClass().getSimpleName() + ".update", entity);
         } catch (RuntimeException re) {
             logger.error("update " + entity.getClass().getName()
                     + " failed :{}", re);
             throw re;
         }
     }
     // 删除
     public void delete(T entity) {
         try {
             this.getSqlSessionTemplate().delete(
                     entity.getClass().getSimpleName() + ".delete", entity);
         } catch (RuntimeException re) {
             logger.error("delete " + entity.getClass().getName()
                     + " failed :{}", re);
             throw re;
         }
     }

     // 根据id删除某个对象
     public void delete(Class entityClass, PK id) {
         try {
             this.getSqlSessionTemplate().delete(
                     entityClass.getSimpleName() + ".deleteById", id);
         } catch (RuntimeException re) {
             logger.error("delete " + entityClass.getName() + "failed :{}", re);
             throw re;
         }
     }
     // 根据id加载某个对象
     public T findById(Class entityClass, PK id) {
         try {
             return (T) this.getSqlSessionTemplate().selectOne(
                     entityClass.getSimpleName() + ".findById", id);
         } catch (RuntimeException re) {
             logger.error("findById " + entityClass.getName() + "failed :{}",
                     re);
             throw re;
         }
     }

     // 查找所有的对象
     public List findAll(Class entityClass) {
         try {
             return this.getSqlSessionTemplate().selectList(
                     entityClass.getSimpleName() + ".findAll");
         } catch (RuntimeException re) {
             logger
                     .error("findAll " + entityClass.getName() + "failed :{}",
                             re);
             throw re;
         }
     }
     // 根据查询参数，当前页数，每页显示的数目得到分页列表
     public PageListData queryPage(Class entityClass, Map param,
             int currentPage, int pageSize) {
         try {
             return new PageListData((Integer)getSqlSessionTemplate()
                     .selectOne(entityClass.getSimpleName()+".getTotalCounts",param), pageSize, currentPage, this
                     .getSqlSessionTemplate().selectList(
                             entityClass.getSimpleName() + ".queryPage", param));
         } catch (RuntimeException re) {
             logger.error("findList " + entityClass.getName() + "failed :{}",
                     re);
             throw re;
         }
     }
 }






 StudentDAOImpl.java




 package com.anxin.dao.impl;

 import org.springframework.stereotype.Repository;

 import com.anxin.bean.Student;
 import com.anxin.dao.StudentDAO;

 @Repository
 public class StudentDAOImpl extends BaseDAOImpl implements StudentDAO {
 }