Java学习12.05

图书馆管理系统——servlet层

servlet.java

package Servlet;
import java.io.IOException;
import java.util.ArrayList;
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 bean.dao;
import bean.Book;
import service.Service;

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

    /**
     * Default constructor. 
     */
    public Servlet() {
        // 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());
        doPost(request,response);
        
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        //doGet(request, response);
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");
        Book webactivity=new Book();
        
        Service service=new Service();
        
        
        String idBook=request.getParameter("idBook");
        String nameBook=request.getParameter("nameBook");
        String namePress=request.getParameter("namePress");
        String nameWritter=request.getParameter("nameWritter");
        String number=request.getParameter("number");
        String method=request.getParameter("method");
        
        
        webactivity.setIdBook(idBook);
        webactivity.setNameBook(nameBook);
        webactivity.setNamePress(namePress);
        webactivity.setNameWritter(nameWritter);
        webactivity.setNumber(number);
    
    
         if("add".equals(method)) {
             if(Service.add(webactivity)) {
                System.out.print("添加成功");
                List<Book> activity11=Service.list();
                request.setAttribute("activity11",activity11); 
                request.setAttribute("message", "添加成功");
                request.getRequestDispatcher("managener.jsp").forward(request,response);
            }
            else {
                System.out.println("添加失败");
                request.setAttribute("message", "添加失败,该书已存在");
                request.getRequestDispatcher("managener.jsp").forward(request,response);
            }
        }
           
           
          
           
          
           
           if("search".equals(method)) {
               ArrayList<Book> activity1=Service.search(webactivity);
            if(activity1!=null) {
                request.setAttribute("message", "查询成功");
                System.out.print("查询成功");
                request.setAttribute("activity1", activity1);
                request.getRequestDispatcher("searchshow.jsp").forward(request,response);    
            }
            else {
                request.setAttribute("message", "查询失败");
                System.out.print("查询失败");
                request.getRequestDispatcher("searchshow.jsp").forward(request,response);
            }
        }
           
           if("show".equals(method)) {
                List<Book> activity11=Service.list();
                request.setAttribute("activity11",activity11); 
                request.getRequestDispatcher("listbook.jsp").forward(request,response);
           }
           
           if("jieyue".equals(method)) {
                List<Book> activity11=Service.list();
                request.setAttribute("activity11",activity11); 
                request.getRequestDispatcher("jieyuechenggong.jsp").forward(request,response);
           }
    }
}

servletindex.java

package Servlet;

import java.io.IOException;
import java.util.ArrayList;
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 bean.studentInfo;
import service.Servicepeople;

/**
 * Servlet implementation class Servletpeople
 */
@WebServlet("/Servletpeople")
public class Servletpeople extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Servletpeople() {
        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
        //doGet(request, response);
        
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");
        studentInfo webactivity=new studentInfo();
        
        Servicepeople servicepeople=new Servicepeople();
        
        
        String name= request.getParameter("name");
        String IDnumber=request.getParameter("IDnumber");
        String sex=request.getParameter("sex");
        String major=request.getParameter("major");
        String method=request.getParameter("method");
        
        webactivity.setName(name);
        webactivity.setIDnumber(IDnumber);
        webactivity.setSex(sex);
        webactivity.setMajor(major);
        
    
    
         if("add".equals(method)) {
             if(Servicepeople.add(webactivity)) {
                System.out.print("添加成功");
                List<studentInfo> activity11=Servicepeople.list();
                request.setAttribute("activity11",activity11); 
                request.setAttribute("message", "添加成功！！！");
                request.getRequestDispatcher("managener.jsp").forward(request,response);
            }
            else {
                System.out.println("添加失败");
                request.setAttribute("message", "添加失败,该用户已存在！！");
                request.getRequestDispatcher("managener.jsp").forward(request,response);
            }
        }
           
           
          
           
          
           
           if("search".equals(method)) {
               ArrayList<studentInfo> activity1=Servicepeople.search(webactivity);
            if(activity1!=null) {
                //request.setAttribute("message", "查询成功");
                //System.out.print("查询成功");
                request.setAttribute("activity11", activity1);
                request.getRequestDispatcher("searchshow.jsp").forward(request,response);    
            }
            else {
                request.setAttribute("message", "查询失败");
                //System.out.print("查询失败");
                request.getRequestDispatcher("search.jsp").forward(request,response);
            }
        }
           if("show".equals(method)) {
                List<studentInfo> activity11=Servicepeople.list();
                request.setAttribute("activity11",activity11); 
                request.getRequestDispatcher("show.jsp").forward(request,response);
           }
    }
    

}

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