跳到servlet显示空白页的问题 请各位高手指点 谢谢
好心人再帮我看下 为什么我下面的代码有问题呀，超链接到servlet后显示空白页面？
<A href="<%=request.getContextPath()%>/AuloadingServlet">管理员入口</A>
AuloadingServlet的代码如下，很简单的 看下 谢谢
package com.wl.control;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Cookie;

public class AuloadingServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
Cookie []allCookie=request.getCookies();
int i=0;
String val=null;
if(allCookie!=null){
for(i=0;i<allCookie.length;i++){
Cookie temp=allCookie[i];
if(temp.getName().equals("admin")){
val=temp.getValue();
request.getRequestDispatcher("gly.jsp?user="+val).forward(request, response);

}

}

}

else if(allCookie==null){
request.getRequestDispatcher("1.jsp").forward(request, response);


}

}


public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doGet(request, response);



}

}
从超链接跳到servlet后，出现空白页面，后台现在也不输出错误 郁闷 请高手指教

[解决办法]
很明显的啊，你的else呢？if和if else不能全部包含的！在加一个else就好了