Java寒假16

2022-02-18 11:04:58 阅读：206 来源： 互联网

标签：Java 16 request HttpServletResponse javax HttpServlet 寒假 import response

com.maike.controller

AddTradeServlet

package com.maike.controller;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

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 com.maike.model.Trade;
import com.maike.model.TradeDto;
import com.maike.service.UserService;
import com.maike.service.UserServiceImpe;

/**
* 增添
*/
@WebServlet("/AddTradeServlet")
public class AddTradeServlet extends HttpServlet {
UserService userService = new UserServiceImpe();
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public AddTradeServlet() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.setContentType("text/html;charset=utf-8");
response.setCharacterEncoding("UTF-8");
request.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
String tradeName = request.getParameter("tradeName");
String tradePrice = request.getParameter("tradePrice");

TradeDto tradeDto = new TradeDto();
tradeDto.setTradeName(tradeName);
tradeDto.setTradePrice(tradePrice);
int k = userService.addTrade(tradeDto);
if(k > 0) {
List<Trade> list = userService.seleTradeAll();
request.setAttribute("tradeList", list);
request.getRequestDispatcher("index.jsp").forward(request, response);
}else {
response.getWriter().append("添加失败").append(request.getContextPath());
request.getRequestDispatcher("add.jsp").forward(request, response);
}
}

}

DeleteStuServlet

package com.maike.controller;

import java.io.IOException;
import java.util.List;

import com.maike.model.Trade;
import com.maike.service.UserService;
import com.maike.service.UserServiceImpe;

/**
* Servlet implementation class DeleteStuServlet删除
*/
@WebServlet("/DeleteStuServlet")
public class DeleteTradeServlet extends HttpServlet {
UserService userService = new UserServiceImpe();
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public DeleteTradeServlet() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub

Integer pid = Integer.parseInt(request.getParameter("pid"));
System.out.println(pid);
String tradeName = request.getParameter("tradeName");
int k = userService.deleteTrade(pid);
List<Trade> list = userService.seleTradeAll();
request.setAttribute("tradeList", list);
request.getRequestDispatcher("index.jsp").forward(request, response);
}

}

LoginServlet

package com.maike.controller;

import java.io.IOException;
import java.util.List;

import com.maike.model.Trade;
import com.maike.service.UserService;
import com.maike.service.UserServiceImpe;

/**
* Servlet implementation class LoginServlet登陆页面
*/
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
UserService userService = new UserServiceImpe();
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
response.getWriter().append("Served at: ").append(request.getContextPath());
}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
String userName = request.getParameter("userName");
String uesrPwd = request.getParameter("userPwd");

int k = userService.judgeLogin(userName, uesrPwd);
if (k > 0) {
List<Trade> list = userService.seleTradeAll();
request.setAttribute("tradeList", list);
request.getRequestDispatcher("index.jsp").forward(request, response);
} else {
request.getRequestDispatcher("register.jsp").forward(request, response);
}
}
}

RegisterServlet

package com.maike.controller;

import java.io.IOException;
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 com.maike.service.UserService;
import com.maike.service.UserServiceImpe;

/**
* Servlet implementation class RegisterServlet注册页面
*/
@WebServlet("/RegisterServlet")
public class RegisterServlet extends HttpServlet {
UserService userService = new UserServiceImpe();
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public RegisterServlet() {
super();
// TODO Auto-generated constructor stub
}

}

ToAddTradeServlet

package com.maike.controller;

/**
* Servlet implementation class ToAddTradeServlet
*/
@WebServlet("/ToAddTradeServlet")
public class ToAddTradeServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public ToAddTradeServlet() {
super();
// TODO Auto-generated constructor stub
}

}

ToUpdateTradeServlet

package com.maike.controller;

import com.maike.model.Trade;
import com.maike.service.UserService;
import com.maike.service.UserServiceImpe;

/**
* Servlet implementation class ToUpdateTradeServlet
*/
@WebServlet("/ToUpdateTradeServlet")
public class ToUpdateTradeServlet extends HttpServlet {
UserService userService = new UserServiceImpe();
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public ToUpdateTradeServlet() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
Integer tradeId = Integer.parseInt(request.getParameter("tradeId"));
System.out.println(tradeId+"");
Trade trade = userService.getTradeByName(tradeId);
request.setAttribute("trade", trade);
request.getRequestDispatcher("update.jsp").forward(request, response);
}

}

UpdateTradeServlet

package com.maike.controller;

import java.io.IOException;
import java.sql.SQLException;
import java.util.List;

import com.maike.model.Trade;
import com.maike.service.UserService;
import com.maike.service.UserServiceImpe;

/**
* Servlet implementation class UpdateTradeServlet修改页面
*/
@WebServlet("/UpdateTradeServlet")
public class UpdateTradeServlet extends HttpServlet {
UserService userService = new UserServiceImpe();
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public UpdateTradeServlet() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("utf-8");
try {
Integer tradeid = Integer.parseInt(request.getParameter("tradeid"));
String tradeName = request.getParameter("tradeName");
String tradePrice = request.getParameter("tradePrice");
System.out.println(tradeName);
System.out.println(tradePrice);
Trade trade= new Trade();
trade.setTradeId(tradeid);
trade.setTradeName(tradeName);
trade.setTradePrice(tradePrice);
int k = userService.updateTrade(trade);
List<Trade> list = userService.seleTradeAll();
request.setAttribute("tradeList", list);
}catch(Exception e) {

}
request.getRequestDispatcher("index.jsp").forward(request, response);
}

}

标签：Java,16,request,HttpServletResponse,javax,HttpServlet,寒假,import,response
来源： https://www.cnblogs.com/gj-zzh2021/p/15907656.html

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

ICode9

Java寒假16