大家帮我看一下这个Servlet文件

Question

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class DispatcherServlet extends HttpServlet{
  private String target = "/use.jsp";  public void init(ServletConfig config) throws ServletException {
    super.init(config);
  }  public void doGet(HttpServletRequest request,
                    HttpServletReponse response) throws ServletException,
      IOException {    doPost(request, response);
  }  public void doPost(HttpServletRequest resquest,
                     HttpServletResponse response) throws ServletException,
      IOException {    String username = request.getParameter("username");
    String password = request.getParameter("password");    request.setAttribute("USER", username);
    request.setAttribute("PASSWORD", password);    ServletContext context = getServeltContext();
    System.out.println("Redirecting to" + target);    RequestDispatcher dispatcher =
        context.getRequestDispatcher();
    dispacher.forward(request, reponse);
  }  public void destroy() {
  }
}

Answer 1

不知道 第三行
improt javax.servlet.http.*;
撒

Answer 2

heavyer(野和尚) 
你编译过了吗?怎么我编译的时候还是不行?

Answer 3

DispatcherServlet2.java:5: class DispatcherServlet is public, should be declared
 in a file named DispatcherServlet.java
public class DispatcherServlet extends HttpServlet{
       ^
DispatcherServlet2.java:13: cannot resolve symbol
symbol  : class HttpServletReponse
location: class DispatcherServlet
                    HttpServletReponse response) throws ServletException,
                    ^
DispatcherServlet2.java:23: cannot resolve symbol
symbol  : variable request
location: class DispatcherServlet
    String username = request.getParameter("username");
                      ^
DispatcherServlet2.java:24: cannot resolve symbol
symbol  : variable request
location: class DispatcherServlet
    String password = request.getParameter("password");
                      ^
DispatcherServlet2.java:26: cannot resolve symbol
symbol  : variable request
location: class DispatcherServlet
    request.setAttribute("USER", username);
    ^
DispatcherServlet2.java:27: cannot resolve symbol
symbol  : variable request
location: class DispatcherServlet
    request.setAttribute("PASSWORD", password);
    ^
DispatcherServlet2.java:29: cannot resolve symbol
symbol  : method getServeltContext  ()
location: class DispatcherServlet
    ServletContext context = getServeltContext();
                             ^
DispatcherServlet2.java:33: getRequestDispatcher(java.lang.String) in javax.serv
let.ServletContext cannot be applied to ()
        context.getRequestDispatcher();
               ^
DispatcherServlet2.java:34: cannot resolve symbol
symbol  : variable request
location: class DispatcherServlet
    dispacher.forward(request, reponse);
                      ^
DispatcherServlet2.java:34: cannot resolve symbol
symbol  : variable reponse
location: class DispatcherServlet
    dispacher.forward(request, reponse);
                               ^
DispatcherServlet2.java:34: cannot resolve symbol
symbol  : variable dispacher
location: class DispatcherServlet
    dispacher.forward(request, reponse);还是报这错!大家 帮我看看!
谢谢!
    ^

Answer 4

不编不知道，一编差点被你气死拼写错n多，getServeltContext前面的ServletContextEvent 到哪里去了？

Answer 5

improt javax.servlet.http.*;
我想这个地方也有错吧！！
是没有找到这个包吧！！

Answer 6

我现在就差两个错误了!
DispatcherServlet.java:39: cannot resolve symbol
symbol  : method getServeltContext  ()
location: class mypack.DispatcherServlet
    ServletContext context=getServeltContext();
                           ^
DispatcherServlet.java:43: getRequestDispatcher(java.lang.String) in javax.servl
et.ServletContext cannot be applied to ()
      context.getRequestDispatcher();
             ^
2 errors只有这两个了
你帮看一下!!!

Answer 7

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class DispatcherServlet extends HttpServlet{
  private String target = "/use.jsp";  public void init(ServletConfig config) throws ServletException {
    super.init(config);
  }  public void doGet(HttpServletRequest request,
                    HttpServletResponse response) throws ServletException,
      IOException {    doPost(request, response);
  }  public void doPost(HttpServletRequest request,
                     HttpServletResponse response) throws ServletException,
      IOException {    String username = request.getParameter("username");
    String password = request.getParameter("password");    request.setAttribute("USER", username);
    request.setAttribute("PASSWORD", password);    ServletContext context = config.getServeltContext();
    System.out.println("Redirecting to" + target);    RequestDispatcher dispatcher =
        context.getRequestDispatcher("要填入java.lang.String path，我不知道你需要填什么,你自己看着办");
    dispatcher.forward(request, response);
  }  public void destroy() {
  }
}

Answer 8

错了
这个没问题import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class DispatcherServlet extends HttpServlet{
  private String target = "/use.jsp";
  public ServletConfig config;  public void init(ServletConfig config) throws ServletException {
    super.init(config);
this.config = config;
  }  public void doGet(HttpServletRequest request,
                    HttpServletResponse response) throws ServletException,
      IOException {    doPost(request, response);
  }  public void doPost(HttpServletRequest request,
                     HttpServletResponse response) throws ServletException,
      IOException {    String username = request.getParameter("username");
    String password = request.getParameter("password");    request.setAttribute("USER", username);
    request.setAttribute("PASSWORD", password);    ServletContext context = config.getServletContext();
    System.out.println("Redirecting to" + target);    RequestDispatcher dispatcher =
        context.getRequestDispatcher("要填入java.lang.String path，我不知道你需要填什么,你自己看着办");
    dispatcher.forward(request, response);
  }  public void destroy() {
  }
}

Answer 9

ServletContext context = config.getServletContext();
    System.out.println("Redirecting to" + target);    RequestDispatcher dispatcher =
        context.getRequestDispatcher("要填入java.lang.String path，我不知道你需要填什么,你自己看着办");
    dispatcher.forward(request, response);
  }
这几句什么意思?我好象在*.XML中已经引入了

Answer 10

放到eclipse里看看，N多错！import java util.*;                  //竟然还有这样的句子！楼主还是自己好好查查吧 ！

Answer 11

还有这个improt javax.servlet.http.*;

Answer 12

那我都改过了!
你帮我看看还有什么错如下:
package mypack;import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class DispatcherServlet extends HttpServlet{
  private String target="/hello.jsp";
    public void init(ServletConfig config)
    throws ServletException{
      super.init(config);
    }
   public void doGet(HttpServletRequest request,
    HttpServletResponse response)
    throws ServletException,IOException{
  
    doPost(request,response);
    }
 
 
  public void doPost(HttpServletRequest request,
     HttpServletResponse  response)
     throws ServletException,IOException{
    String username= request.getParameter("username");
    String password= request.getParameter("password");    request.setAttribute("USER",username);
    request.setAttribute("PASSWORD",password);
      ServletContext context=getServeltContext();
    System.out.println("Redirecting to"+target);
  
    RequestDispatcher dispatcher=
      context.getRequestDispatcher();
    dispatcher.forward(request,response);
  }
    public void destroy(){
  }
}

Answer 13

还是有一个错!大伙都走了?来的帮我一下!如下:
package mypack;import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class DispatcherServlet extends HttpServlet{
  private String target="/hello.jsp";
    public void init(ServletConfig config)
    throws ServletException{
      super.init(config);
    }
   public void doGet(HttpServletRequest request,
    HttpServletResponse response)
    throws ServletException,IOException{
  
    doPost(request,response);
    }
 
 
  public void doPost(HttpServletRequest request,
     HttpServletResponse  response)
     throws ServletException,IOException{
    String username= request.getParameter("username");
    String password= request.getParameter("password");    request.setAttribute("USER",username);
    request.setAttribute("PASSWORD",password);
      ServletContext context=getServeltContext();
    System.out.println("Redirecting to"+target);
  
    RequestDispatcher dispatcher=
      context.getRequestDispatcher();
    dispatcher.forward(request,response);
  }
    public void destroy(){
  }
}