modifyservlet.java

图书管理

package library;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.*;
import javax.servlet.http.*;

public class ModifyServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";
    BookModel bookModel;
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        bookModel = new BookModel();
    }

    public void doGet(HttpServletRequest request, 
                      HttpServletResponse response) throws ServletException, IOException {response.setContentType(CONTENT_TYPE);
       String bookNum = (String)request.getParameter("bookNum");
       String authorNum = (String)request.getParameter("authorNum");
        System.out.println("lllll");
      // javax.sql.rowset.CachedRowSet rs = (javax.sql.rowset.CachedRowSet)request.getAttribute("rs");
       request.setAttribute("rs",bookModel.QueryById(bookNum,authorNum)); 
       System.out.println("kkkkkk");
       getServletContext().getRequestDispatcher("/UpdateInfo.jsp").forward(request,response);
       System.out.println("kkttttt");
    }
    public void doPost(HttpServletRequest request, 
                      HttpServletResponse response) throws ServletException, IOException {
        doGet(request,response);            
    }
}