Java学习12.05

图书馆管理系统——servlet层

servlet.java

  1 package Servlet;
  2 import java.io.IOException;
  3 import java.util.ArrayList;
  4 import java.util.List;
  5 
  6 import javax.servlet.ServletException;
  7 import javax.servlet.annotation.WebServlet;
  8 import javax.servlet.http.HttpServlet;
  9 import javax.servlet.http.HttpServletRequest;
 10 import javax.servlet.http.HttpServletResponse;
 11 
 12 import bean.dao;
 13 import bean.Book;
 14 import service.Service;
 15 
 16 /**
 17  * Servlet implementation class Servlet
 18  */
 19 @WebServlet("/Servlet")
 20 public class Servlet extends HttpServlet {
 21     private static final long serialVersionUID = 1L;
 22 
 23     /**
 24      * Default constructor. 
 25      */
 26     public Servlet() {
 27         // TODO Auto-generated constructor stub
 28     }
 29 
 30     /**
 31      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 32      */
 33     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 34         // TODO Auto-generated method stub
 35         //response.getWriter().append("Served at: ").append(request.getContextPath());
 36         doPost(request,response);
 37         
 38     }
 39 
 40     /**
 41      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
 42      */
 43     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 44         // TODO Auto-generated method stub
 45         //doGet(request, response);
 46         request.setCharacterEncoding("utf-8");
 47         response.setContentType("text/html;charset=utf-8");
 48         Book webactivity=new Book();
 49         
 50         Service service=new Service();
 51         
 52         
 53         String idBook=request.getParameter("idBook");
 54         String nameBook=request.getParameter("nameBook");
 55         String namePress=request.getParameter("namePress");
 56         String nameWritter=request.getParameter("nameWritter");
 57         String number=request.getParameter("number");
 58         String method=request.getParameter("method");
 59         
 60         
 61         webactivity.setIdBook(idBook);
 62         webactivity.setNameBook(nameBook);
 63         webactivity.setNamePress(namePress);
 64         webactivity.setNameWritter(nameWritter);
 65         webactivity.setNumber(number);
 66     
 67     
 68          if("add".equals(method)) {
 69              if(Service.add(webactivity)) {
 70                 System.out.print("添加成功");
 71                 List<Book> activity11=Service.list();
 72                 request.setAttribute("activity11",activity11); 
 73                 request.setAttribute("message", "添加成功");
 74                 request.getRequestDispatcher("managener.jsp").forward(request,response);
 75             }
 76             else {
 77                 System.out.println("添加失败");
 78                 request.setAttribute("message", "添加失败,该书已存在");
 79                 request.getRequestDispatcher("managener.jsp").forward(request,response);
 80             }
 81         }
 82            
 83            
 84           
 85            
 86           
 87            
 88            if("search".equals(method)) {
 89                ArrayList<Book> activity1=Service.search(webactivity);
 90             if(activity1!=null) {
 91                 request.setAttribute("message", "查询成功");
 92                 System.out.print("查询成功");
 93                 request.setAttribute("activity1", activity1);
 94                 request.getRequestDispatcher("searchshow.jsp").forward(request,response);    
 95             }
 96             else {
 97                 request.setAttribute("message", "查询失败");
 98                 System.out.print("查询失败");
 99                 request.getRequestDispatcher("searchshow.jsp").forward(request,response);
100             }
101         }
102            
103            if("show".equals(method)) {
104                 List<Book> activity11=Service.list();
105                 request.setAttribute("activity11",activity11); 
106                 request.getRequestDispatcher("listbook.jsp").forward(request,response);
107            }
108            
109            if("jieyue".equals(method)) {
110                 List<Book> activity11=Service.list();
111                 request.setAttribute("activity11",activity11); 
112                 request.getRequestDispatcher("jieyuechenggong.jsp").forward(request,response);
113            }
114     }
115 }

servletindex.java

  1 package Servlet;
  2 
  3 import java.io.IOException;
  4 import java.util.ArrayList;
  5 import java.util.List;
  6 
  7 import javax.servlet.ServletException;
  8 import javax.servlet.annotation.WebServlet;
  9 import javax.servlet.http.HttpServlet;
 10 import javax.servlet.http.HttpServletRequest;
 11 import javax.servlet.http.HttpServletResponse;
 12 
 13 import bean.studentInfo;
 14 import service.Servicepeople;
 15 
 16 /**
 17  * Servlet implementation class Servletpeople
 18  */
 19 @WebServlet("/Servletpeople")
 20 public class Servletpeople extends HttpServlet {
 21     private static final long serialVersionUID = 1L;
 22        
 23     /**
 24      * @see HttpServlet#HttpServlet()
 25      */
 26     public Servletpeople() {
 27         super();
 28         // TODO Auto-generated constructor stub
 29     }
 30 
 31     /**
 32      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 33      */
 34     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 35         // TODO Auto-generated method stub
 36         response.getWriter().append("Served at: ").append(request.getContextPath());
 37     }
 38 
 39     /**
 40      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
 41      */
 42     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 43         // TODO Auto-generated method stub
 44         //doGet(request, response);
 45         
 46         request.setCharacterEncoding("utf-8");
 47         response.setContentType("text/html;charset=utf-8");
 48         studentInfo webactivity=new studentInfo();
 49         
 50         Servicepeople servicepeople=new Servicepeople();
 51         
 52         
 53         String name= request.getParameter("name");
 54         String IDnumber=request.getParameter("IDnumber");
 55         String sex=request.getParameter("sex");
 56         String major=request.getParameter("major");
 57         String method=request.getParameter("method");
 58         
 59         webactivity.setName(name);
 60         webactivity.setIDnumber(IDnumber);
 61         webactivity.setSex(sex);
 62         webactivity.setMajor(major);
 63         
 64     
 65     
 66          if("add".equals(method)) {
 67              if(Servicepeople.add(webactivity)) {
 68                 System.out.print("添加成功");
 69                 List<studentInfo> activity11=Servicepeople.list();
 70                 request.setAttribute("activity11",activity11); 
 71                 request.setAttribute("message", "添加成功！！！");
 72                 request.getRequestDispatcher("managener.jsp").forward(request,response);
 73             }
 74             else {
 75                 System.out.println("添加失败");
 76                 request.setAttribute("message", "添加失败,该用户已存在！！");
 77                 request.getRequestDispatcher("managener.jsp").forward(request,response);
 78             }
 79         }
 80            
 81            
 82           
 83            
 84           
 85            
 86            if("search".equals(method)) {
 87                ArrayList<studentInfo> activity1=Servicepeople.search(webactivity);
 88             if(activity1!=null) {
 89                 //request.setAttribute("message", "查询成功");
 90                 //System.out.print("查询成功");
 91                 request.setAttribute("activity11", activity1);
 92                 request.getRequestDispatcher("searchshow.jsp").forward(request,response);    
 93             }
 94             else {
 95                 request.setAttribute("message", "查询失败");
 96                 //System.out.print("查询失败");
 97                 request.getRequestDispatcher("search.jsp").forward(request,response);
 98             }
 99         }
100            if("show".equals(method)) {
101                 List<studentInfo> activity11=Servicepeople.list();
102                 request.setAttribute("activity11",activity11); 
103                 request.getRequestDispatcher("show.jsp").forward(request,response);
104            }
105     }
106     
107 
108 }

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posted on 2020-12-05 13:37 桑榆非晚柠月如风阅读(100) 评论(0) 编辑收藏举报