opinionservlet.java

用J2EE开发的网站,可以应用到图书馆,图书超市

package ksnb;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class OpinionServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GB2312";
    String cmd=null;
    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void service(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        cmd=(String)request.getParameter("cmd");
        Opinion opinion=null;

        if(cmd.equals("1"))
        {

            opinion=new Opinion();
            opinion.insert(request);
            //System.out.println("insert executed");
            opinion.Query(request);
            //System.out.println("query executed");
            RequestDispatcher rd = request.getRequestDispatcher("Opinion.jsp");
            rd.forward(request, response);
        }
        else if(cmd.equals("2"))
        {
            RequestDispatcher rd = request.getRequestDispatcher("ShowFullOpinion.jsp");
            rd.forward(request, response);
        }

    }

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

    //Clean up resources
    public void destroy() {
    }
}