bookservlet.java

通过jsp,servlet,javaBean,三成架构实现的好友通讯录系统

package com.servelet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import com.entity.*;
import com.Dao.bookDao;

public class BookServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
       doPost(request, response);

    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
      response.setContentType(CONTENT_TYPE);
      String type=request.getParameter("type");

      int result=0;
      bookDao bookdao=new bookDao();
      if(type.equals("add"))
      {
          String name=request.getParameter("name");
          String sex=request.getParameter("sex");
          String phone=request.getParameter("phone");
          String address=request.getParameter("address");
          String mobilePhone=request.getParameter("mobilePhone");
          String company=request.getParameter("company");
          String comPhone=request.getParameter("comPhone");
          String comAddress=request.getParameter("comAddress");
          int relation=Integer.parseInt(request.getParameter("relation"));
          HttpSession session=request.getSession();
          UserBean user=(UserBean)session.getAttribute("user");
          BookBean book=new BookBean();//向bookbean中设置属性
          book.setName(name);
          book.setSex(sex);
          book.setPhone(phone);
          book.setAddress(address);
          book.setMobilePhone(mobilePhone);
          book.setCompany(company);
          book.setComPhone(comPhone);
          book.setComAddress(comAddress);
          book.setRelation(relation);
          book.setUserId(user.getUserId());
          result=bookdao.addBook(book);
          if(result==1)
          {
              request.getRequestDispatcher("displayservlet").forward(request,response);
          }
          else
          {
              request.getRequestDispatcher("error.jsp").forward(request,response);
          }
      }
      else if(type.equals("del"))
      {
          int bookId=Integer.parseInt(request.getParameter("BookId"));
          result=bookdao.delBookById(bookId);
          if(result==1)
          {
             request.getRequestDispatcher("displayservlet").forward(request,response);
          }
          else
          {
             request.getRequestDispatcher("error.jsp").forward(request,response);
          }
      }        else if(type.equals("update"))
        {
            int bookId=Integer.parseInt(request.getParameter("bookId"));
            BookBean book=makeBook(request);
            result=bookdao.updateBook(book,bookId);
            if(result==1)
            {
                    request.getRequestDispatcher("selectservlet?relation=0").forward(request, response);
            }else
            {
                    request.getRequestDispatcher("Test.jsp").forward(request, response);
            }
        }

    }
    public BookBean makeBook(HttpServletRequest request)
    {
            String name=request.getParameter("name");
            String sex=request.getParameter("sex");
            String phone=request.getParameter("phone");
            String address=request.getParameter("address");
            String mobilePhone=request.getParameter("mobilePhone");
            String company=request.getParameter("company");
            String comPhone=request.getParameter("comPhone");
            String comAddress=request.getParameter("comAddress");
            int relation=Integer.parseInt(request.getParameter("relation"));

            HttpSession session=request.getSession();
            UserBean user=(UserBean)session.getAttribute("user");
            BookBean book=new BookBean();
            book.setName(name);
            book.setSex(sex);
            book.setPhone(phone);
            book.setAddress(address);
            book.setMobilePhone(mobilePhone);
            book.setCompany(company);
            book.setComPhone(comPhone);
            book.setComAddress(comAddress);
            book.setRelation(relation);
            book.setUserId(user.getUserId());
            return book;
	}
    //Clean up resources
    public void destroy() {
    }
}