package com.hp.school.controller;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import com.hp.school.entity.User;
import com.hp.school.page.Page;
import com.hp.school.service.UserService;
@Controller
@RequestMapping("/user")
/**
* 完成用户的增删改查 ,分页
* @author yuan
*
*/
public class UserController {
@Autowired
private UserService userService;
/**
* 跳转到用户 列表jsp页面
* @param model
* @return
*/
@RequestMapping("/list")
public ModelAndView list(ModelAndView model){
model.setViewName("user/user_list");
return model;
}
/**
* 添加用户
* @param user
* @return
*/
@RequestMapping(value="/add",method=RequestMethod.POST)
@ResponseBody
public Map<String,String> add(User user){
Map<String,String> map = new HashMap<String, String>();
if(StringUtils.isEmpty(user.getUsername())){
map.put("type", "error");
map.put("msg", "用户名不能为空!");
return map;
}
if(StringUtils.isEmpty(user.getPassword())){
map.put("type", "error");
map.put("msg", "密码不能为空!");
return map;
}
//TODO 访问业务层
User existsUser = userService.findUserByUserName(user.getUsername());
if(existsUser!=null){
map.put("type", "error");
map.put("msg", "该用户已存在!");
return map;
}
// 更新 /删除 /添加操作 最终 返回的是影响的行数
int result = userService.add(user);
if(result<=0){
map.put("type", "error");
map.put("msg", "用户保存失败!");
return map;
}
map.put("type", "success");
map.put("msg", "添加用户成功!");
return map;
}
/**
* 获取用户列表数据 -- 包含 条件查询 分页
* @return
*/
@RequestMapping(value="/get_list",method=RequestMethod.POST)
@ResponseBody
/**
* @param username 模糊查询条件
* @param page 分页类
* @return
*/
public Map<String,Object> getList(
@RequestParam(name="username",required=false,defaultValue="") String username,
Page page
){
Map<String,Object> map = new HashMap<>(); // 最终数据在这里
// 这个map 等同于 QueryBean
Map<String,Object> queryMap = new HashMap<>(); // 是一个查询条件类
//拼装 limit ?,?
queryMap.put("offset", page.getOffset());
queryMap.put("pageSize", page.getRows());
queryMap.put("username", "%"+username+"%");
map.put("rows", userService.getList(queryMap)); //比如查询的第2页显示的一个集合数据
map.put("total", userService.getTotal(queryMap)); //接收总数量
return map;
}
/**
* 编辑用户
* @param user
* @return
*/
@RequestMapping(value="/edit",method=RequestMethod.POST)
@ResponseBody
public Map<String,String> editUser(User user){
Map<String,String> map = new HashMap<String, String>();
if(StringUtils.isEmpty(user.getUsername())){
map.put("type", "error");
map.put("msg", "用户名不能为空!");
return map;
}
if(StringUtils.isEmpty(user.getPassword())){
map.put("type", "error");
map.put("msg", "密码不能为空!");
return map;
}
//TODO 访问业务层
User existsUser = userService.findUserByUserName(user.getUsername());
if(existsUser!=null){
if(user.getId()!=existsUser.getId()){
map.put("type", "error");
map.put("msg", "该用户已存在!");
return map;
}
}
// 更新 /删除 /添加操作 最终 返回的是影响的行数
int result = userService.edit(user);
if(result<=0){
map.put("type", "error");
map.put("msg", "用户编辑失败!");
return map;
}
map.put("type", "success");
map.put("msg", "编辑用户成功!");
return map;
}
/**
* 删除用户
* @param user
* @return
*
* delete from user where id in (23,24,17)
*/
@RequestMapping(value="/delete",method=RequestMethod.POST)
@ResponseBody
public Map<String,String> delete(
@RequestParam(name="ids[]",required=true)Integer[] ids){
Map<String,String> map = new HashMap<>();
// ids 非空判断 可以不写
//需将 数组id转成 23,24,17
String idsParam="";
for (Integer id : ids) {
idsParam += id+","; // 23,24,17,
}
idsParam = idsParam.substring(0, idsParam.length()-1);
// 通过业务层 调用删除方法 , 根据返回值判断
int result = userService.delete(idsParam);
if(result<=0){
map.put("type", "error");
map.put("msg", "用户删除失败!");
return map;
}
map.put("type", "success");
map.put("msg", "删除用户成功!");
return map;
}
/**
* 修改用户
* @param user
* @return
*//*
@RequestMapping(value="/edit",method=RequestMethod.POST)
@ResponseBody
public Map<String,String> edit(User user){
Map<String,String> map = new HashMap<String, String>();
if(StringUtils.isEmpty(user.getUsername())){
map.put("type", "error");
map.put("msg", "用户名不能为空!");
return map;
}
if(StringUtils.isEmpty(user.getPassword())){
map.put("type", "error");
map.put("msg", "密码不能为空!");
return map;
}
//TODO 访问业务层
User existsUser = userService.findUserByUserName(user.getUsername());
if(existsUser!=null){
if(user.getId()!=existsUser.getId()){ //
map.put("type", "error");
map.put("msg", "该用户已存在!");
return map;
}
}
// 更新 /删除 /添加操作 最终 返回的是影响的行数
int result = userService.edit(user);
if(result<=0){
map.put("type", "error");
map.put("msg", "用户修改失败!");
return map;
}
map.put("type", "success");
map.put("msg", "修改用户成功!");
return map;
}
*//**
* 删除用户
* @param user
* @return
*//*
@RequestMapping(value="/delete",method=RequestMethod.POST)
@ResponseBody
public Map<String,String> delete(@RequestParam(name="ids[]",required=true)Long[] ids){
Map<String,String> map = new HashMap<String, String>();
if(ids==null){
map.put("type", "error");
map.put("msg", "请选择要删除的数据!");
return map;
}
String idsParam = "";
for (Long id : ids) {
idsParam += id+","; //(2,7,8,9,)
}
System.out.println("idsParam==="+idsParam);
//去掉最后一个逗号
idsParam = idsParam.substring(0, idsParam.length()-1);
int result = userService.delete(idsParam);
if(result<=0){
map.put("type", "error");
map.put("msg", "删除失败!");
return map;
}
map.put("type", "success");
map.put("msg", "删除成功!");
return map;
}*/
}
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