三、dao層的實現
構建UserDao接口,並使用@Respository將其注射到spring容器中。
package com.jcx.blog.dao;
import com.jcx.blog.domain.po.User;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
* Created by jichenxiao on 2016/4/6.
*/
@Repository
public interface UserDao {
List<User> selectAllUser();
public void addUser(User user);
public User selectUserByNickname(String nickname);
}
在編寫UserDao的實現類之前,需要編寫BaseDao類,因爲所有的實現類都要集成
package com.jcx.blog.dao;
/**
* Created by jichenxiao on 2016/4/6.
*/
public class BaseDao extends org.springframework.orm.ibatis.support.SqlMapClientDaoSupport{
@javax.annotation.Resource(name = "sqlMapClient")
private com.ibatis.sqlmap.client.SqlMapClient sqlMapClient;
@javax.annotation.PostConstruct
public void initSqlMapClient(){
super.setSqlMapClient(sqlMapClient);
}
}
接下來開始編寫實現類。
package com.jcx.blog.dao.impl;
import com.jcx.blog.dao.BaseDao;
import com.jcx.blog.dao.UserDao;
import com.jcx.blog.domain.po.User;
import org.springframework.stereotype.Component;
import java.util.List;
/**
* Created by jichenxiao on 2016/4/6.
*/
@Component("userDao")
public class UserDaoImpl extends BaseDao implements UserDao {
@Override
public List<User> selectAllUser() {
return (List<User>) getSqlMapClientTemplate().queryForList("User.selectAllUser");
}
@Override
public void addUser(User user) {
getSqlMapClientTemplate().insert("User.addUser", user);
}
@Override
public User selectUserByNickname(String nickname) {
return (User)getSqlMapClientTemplate().queryForObject("User.selectUserByNickname",nickname);
}
}
四、service層
服務層主要完成了對dao層的調用以及一些其他的邏輯操作。用戶管理服務通過UserSercvice實現,UserService.java如下。
package com.jcx.blog.service;
import com.jcx.blog.domain.po.User;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
/**
* Created by jichenxiao on 2016/4/7.
*/
public interface UserService {
List<User> selectAllUser();
public void addUser(HttpServletRequest request);
public String selectUserByNickname(HttpServletRequest request);
}
UserServiceImpl.java實現類如下所示,主要完成了對dao層的調用。
<span style="font-size:14px;">package com.jcx.blog.service.impl;
import com.jcx.blog.dao.UserDao;
import com.jcx.blog.domain.po.User;
import com.jcx.blog.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
/**
* Created by jichenxiao on 2016/4/7.
*/
@Service(value = "UserService")
public class UserServiceImpl implements UserService{
@Autowired
private UserDao userDao;
@Override
public List<User> selectAllUser() {
return userDao.selectAllUser();
}
@Transactional
@Override
public void addUser(HttpServletRequest request) {
String nickname = request.getParameter("nickname");
String password = request.getParameter("password");
String first_name = request.getParameter("first_name");
String last_name = request.getParameter("last_name");
User user = new User();
user.setNickname(nickname);
user.setPassword(password);
user.setFirst_name(first_name);
user.setLast_name(last_name);
userDao.addUser(user);
}
@Override
public String selectUserByNickname(javax.servlet.http.HttpServletRequest request) {
String nickname = request.getParameter("nickname");
String password = request.getParameter("password");
User user = userDao.selectUserByNickname(nickname);
if(user != null && user.getPassword().equals(password))
return "success";
else
return "fail";
}
}</span><span style="font-family:Microsoft YaHei;font-size:18px;">
</span>
五、控制層
控制層即controller在web模塊中,作用是接收前端的請求,並調用服務層進行相應的處理。UserController如下所示。
package com.jcx.blog.controller;
import com.jcx.blog.domain.po.User;
import com.jcx.blog.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.servlet.http.HttpServletRequest;
import java.util.List;
/**
* Created by jichenxiao on 2016/4/7.
*/
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping(value = "/", method = RequestMethod.GET)
public String index(){
return "index";
}
@RequestMapping(value = "/error", method = RequestMethod.GET)
public String error(){
return "error";
}
@RequestMapping(value = "/userlist", method = RequestMethod.GET)
public String getUserList(ModelMap modelMap){
List<User> userList = userService.selectAllUser();
modelMap.addAttribute("userList",userList);
return "userList";
}
@RequestMapping(value = "/addUserP", method = RequestMethod.POST)
public String addUser(HttpServletRequest request){
userService.addUser(request);
return "redirect:/userlist";
}
@RequestMapping(value = "/login", method = RequestMethod.GET)
public String login(){
return "login";
}
@RequestMapping(value = "/logincheck", method = RequestMethod.POST)
public String loginCheck(HttpServletRequest request){
String result = userService.selectUserByNickname(request);
if(result.equals("success"))
return "redirect:/userlist";
else
return "redirect:/error";
}
}
至此,所有後臺開發的流程已經完成,視圖層將在後續繼續開發,目前使用JSP進行調試。
未完待續。