struts2+hibernate3+spring3项目快速开发（图文）之3:搭建项目结构（分包、类实现、方法编写）...

1. 分包

a) 在src文件夹下，创建包结构：model（实体类）、dao（数据库访

问类）、service（业务逻辑类）、action（控制类）

2. model、dao生成

利用Myeclipse生成model和dao（最好自己构建可以减少冗余代码）

转到MyEclipse数据库浏览视图下，双击sshteat001进行连接

右键点击users表，选择Hibernate反向工程

选择生成目录为app.model，勾选创建POJO即创建表对应的Javabean，

同时创建映射文件hbm.xml，勾选更新hibernate配置，勾选创建spring

dao。

下一步，选择id生成策略为native，因为users主键自增，或者在下一

步中选择也可以

点击完成，回到代码视图查看工程变化，model包下面增加了

Users.java、UsersDAO.java、Users.hbm.xml三个文件

将UsersDAO移动到dao包中，并抽出接口IUsersDAO

3. service、action编写

a)编写service层代码，创建IUsersService接口和UsersService实现类

，编写CRUD的方法。

package service;import java.util.List;import model.Users;

public interface IUsersService { public List findAll(); public List findByName(String username); public Users findByUid(Integer uid); public void addUsers(Users u) throws Exception ; public void updateUsers(Users u) throws Exception ; public void delUsers(Integer uid) throws Exception ; public Users login(String username,String password);

}

----------------------package service;

import java.util.List;

import model.Users;

import org.slf4j.Logger;import org.slf4j.LoggerFactory;import dao.IUsersDAO;import dao.UsersDAO;

public class UsersService implements IUsersService { private static final Logger log = LoggerFactory.getLogger

(UsersService.class); private IUsersDAO usersDAO=null;

public void setUsersDAO(IUsersDAO usersDAO) { this.usersDAO = usersDAO; }

public void addUsers(Users u) throws Exception { usersDAO.save(u); }

public void delUsers (Integer uid) throws Exception { usersDAO.delete(findByUid(uid)); }

public List findAll() { return usersDAO.findAll(); }

public List findByName(String username) { return usersDAO.findByUsername(username); }

public Users findByUid(Integer uid) { return usersDAO.findById(uid); }

public Users login(String username, String password) { List list = usersDAO.findByUsername(username);

if(null==list||list.size()==0) return null; Users u=(Users) usersDAO.findByUsername(username).get

(0); if(null==u) return null; if(username.equals(u.getUsername())&&password.equals

(u.getPassword())) return u; else return null; }

public void updateUsers (Users u) throws Exception { usersDAO.attachDirty(u); }}

b) 编写action层UsersAction代码，用于对用户增删改查进行处理

package action;import java.util.ArrayList;import java.util.List;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.context.ApplicationContext;import model.Users;import service.IUsersService;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class UsersAction extends ActionSupport{

private static final Logger log = LoggerFactory.getLogger

(UsersAction.class); private Integer uid=new Integer(0);// 用于修改删除时传参数 private Users u=new Users();//用于增改 private List userList=new ArrayList();//用于查询 private IUsersService usersService=null; public String addUser() throws Exception{ try { usersService.addUsers(u); } catch (Exception e) { log.error("保存用户错误",e); return ERROR; } return SUCCESS; }

public String listUser() throws Exception{ userList=usersService.findAll(); return SUCCESS; }

public String editUser() throws Exception{ try { u=usersService.findByUid(uid); } catch (Exception e) { log.error("修改用户错误",e); return ERROR; } return SUCCESS; }

public String updateUser() throws Exception{ try { usersService.updateUsers(u); } catch (Exception e) { log.error("更新用户错误",e); return ERROR; } return SUCCESS; }

public String delUser() throws Exception{ try { usersService.delUsers(uid); } catch (Exception e) { log.error("删除用户错误",e); return ERROR; } return SUCCESS; }

public String login() throws Exception{ try { Users loginUser=usersService.login(u.getUsername(),

u.getPassword()); if(null!=loginUser){ ActionContext context=ActionContext.getContext

(); context.getSession().put("LOGINUSER",loginUser); return SUCCESS; } } catch (Exception e) { log.error("登录查询错误",e); return ERROR; } return INPUT; }

public void setUsersService(IUsersService usersService) { this.usersService = usersService; } public Users getU() { return u; } public void setU(Users u) { this.u = u; }

public List getUserList() { return userList; }

public void setUserList(List userList) { this.userList = userList; }

public Integer getUid() { return uid; }

public void setUid(Integer uid) { this.uid = uid; }}