spring+struts2+mybatis三大框架集成实现用户的增删改查入门操作案例

package com.xushouwei.dao; import java.util.List; import org.mybatis.spring.SqlSessionTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import com.xushouwei.bean.User; //该注解用于标注数据访问组件，即DAO组件； @Repository public class UserDaoImp implements UserDao{ private final String INSERT_USER="insertUser"; private final String UPDATE_USER="updateUser"; private final String DELETE_USER="deleteUser"; private final String FIND_USER_BY_ID="findUserById"; private final String SELECT_ALL_USER="selectAllUser"; private final String LOGIN_USER="userLogin"; //该注解可以对成员变量、方法和构造函数进行标注，来完成自动装配的工作 //不需要再写setDao方法就可以通过接口调用Dao了 @Autowired private SqlSessionTemplate sqlSessionTemplate; @Override public void insertUser(User user) { // TODO Auto-generated method stub sqlSessionTemplate.insert(INSERT_USER, user); } @Override public void updateUser(User user) { // TODO Auto-generated method stub sqlSessionTemplate.update(UPDATE_USER, user); } @Override public void deleteUser(Integer userId) { // TODO Auto-generated method stub sqlSessionTemplate.delete(DELETE_USER, userId); } @Override public User findUserById(Integer userId) { // TODO Auto-generated method stub return sqlSessionTemplate.selectOne(FIND_USER_BY_ID, userId); } @Override public List<User> selectAllUser() { // TODO Auto-generated method stub return sqlSessionTemplate.selectList(SELECT_ALL_USER); } @Override public User userLogin(User user) { // TODO Auto-generated method stub return sqlSessionTemplate.selectOne(LOGIN_USER, user); } }