package com.web;

import com.bean.Users;
import com.dao.UsersMapper;
import com.service.UsersService;
import com.util.MybatisUtils;
import com.util.StringUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Date;

@WebServlet(urlPatterns = "/user",name = "UsersServlet")
public class UsersServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req,resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String op = req.getParameter("op");
        if("login".equals(op)){
            login(req,resp);
        }else if("reg".equals(op)){
            reg(req,resp);
        }else if("toPassword".equals(op)){
            if(req.getSession().getAttribute("user")!=null){
                req.getRequestDispatcher("/WEB-INF/password.jsp").forward(req,resp);
            }else{
                req.getRequestDispatcher("/login.jsp").forward(req,resp);
            }
        }else if("doPassword".equals(op)){
            String pwd = StringUtil.requiredString("pwd","原有密码",req);
            String newpwd = StringUtil.requiredString("newpwd","新的密码",req);
            String repwd = StringUtil.requiredString("repwd","确认密码",req);
            // 原有密码是否正确？
            Users user = (Users) req.getSession().getAttribute("user");
            if(!user.getPwd().equals(pwd)){
                req.setAttribute("pwd_error","原有密码录入错误！");
                req.getRequestDispatcher("/WEB-INF/password.jsp").forward(req,resp);
                return;
            }
            // 两次录入的密码是否一致？
            if(!StringUtil.fieldsCompare("newpwd","repwd",req)){
                req.getRequestDispatcher("/WEB-INF/password.jsp").forward(req,resp);
                return;
            }
            // 修改密码是否成功？
            UsersService usersService = new UsersService();
            usersService.updatePassword(user,newpwd);
            // 跳转页面，提示成功？1、转到成功页面，2、javascript弹窗口提示
            StringUtil.showSuccess("操作成功！","/index.jsp",req,resp);
        }
        else{
            throw new ServletException("不支持的操作！");
        }
    }
    private void login(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String name = req.getParameter("account");
        String pwd = req.getParameter("pwd");
        UsersService usersService = new UsersService();
        Users user = usersService.login(name,pwd);
        if(user!=null){
            req.getSession().setAttribute("user",user);
            resp.sendRedirect("/index.jsp");
        }else{
            resp.sendRedirect("/login.jsp");
        }
    }
    private void reg(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String nickname = StringUtil.requiredString("nickname","用户名",req);
        String realname = StringUtil.requiredString("realname","真实姓名",req);
        String pwd = StringUtil.requiredString("pwd","密码",req);
        String repwd = StringUtil.requiredString("repwd","确认密码",req);
        String phone = StringUtil.requiredString("phone","电话",req);
        String email = StringUtil.requiredString("email","邮件",req);
        String address = req.getParameter("address");
        String realid = req.getParameter("realid");
        // 校验结果判断
        if(nickname == null ||
                realname == null ||
                pwd == null ||
                repwd == null ||
                phone == null ||
                email == null ||
                !StringUtil.fieldsCompare("pwd","repwd",req)
        ){
            req.getRequestDispatcher("/reg.jsp").forward(req,resp);
            return; // 一定要做
        }
        Users user = new Users(nickname,realname,pwd,phone,email,address,new Date(),
                1,realid);
        // 调用业务层进行数据库操作
        UsersService usersService = new UsersService();
        usersService.reg(user);
        // 重定向到登录页面
        resp.sendRedirect("/login.jsp");
    }
}

登录
  
请登录
  

  
首页
  
欢迎${user.nickname}登陆
  

• 新闻

  
首页/新闻
    
新闻列表
    

      
全部结果> ${params.keywords} 
      

        


新闻分类
            

              null ? "style=\"color:red;\"":""}
                      href="/news?op=list&keywords=${params.keywords}&interval=${params.interval}">全部 
              
                    }
                        href="/news?op=list&category_id=${category.id}&keywords=${params.keywords}&interval=${params.interval}">
                    ${category.name}
                    
                 
              

          

发布时间
            

              null ? "style=\"color:red;\"":""}
                      href="/news?op=list&keywords=${params.keywords}&interval=0&category_id=${params.category_id}">最近 
              }
                      href="/news?op=list&keywords=${params.keywords}&interval=1&category_id=${params.category_id}">1月内 
              }
                      href="/news?op=list&keywords=${params.keywords}&interval=3&category_id=${params.category_id}">3月内 
              }
                      href="/news?op=list&keywords=${params.keywords}&interval=6&category_id=${params.category_id}">半年内 
              }
                      href="/news?op=list&keywords=${params.keywords}&interval=12&category_id=${params.category_id}">1年内
            
          


    
    

        servlet中的定义：
　　　　　List list=newDao.findAll();
        //将查询到的数据库信息存储得到“请求作用域”
        req.setAttribute("list",list);//其中前一个定义的是页面接收对象，须于页面中接收保持一致。
        req.getRequestDispatcher("/news/list.jsp").forward(req,resp);    

   /*list是接收servlet中的对象，而var代表每次循环定义的对象*/
      
${news.id}
        ${news.title}
        ${news.content}
        ${news.keywords}
        ${news.usersId}>
        ${news.pubtime}
        ${news.checkUsersId}
        ${news.categoryId}