大家帮看一下这个错误的原因是什么

seven_11 2009-03-13 11:15:09 
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<title>注册判断</title>

</head>



<body>



  <%!

    public boolean LengthCheck(String str,int MinLength,int MaxLength)

    {

        return ((str.length()>=MinLength)&&(str.length()<=MaxLength));

    }

    String UserName=request.getParameter("UserName");

    String NickName=request.getParameter("NickName");

    String Sex=request.getParameter("Sex");

    String Password=request.getParameter("Password");

    String PwdConfirm=request.getParameter("PwdConfirm");

    String Question=request.getParameter("Question");

    String Answer=request.getParameter("Answer");

    String Email=request.getParameter("Email");

    String Error=new String();

		

  %>

  <%

    boolean allOk=true;

    String Number="0123456789";

    for(int i=0;i<UserName.length();i++)

    {

        char temp=UserName.charAt(i);

        if(!((temp>='a'&&temp<='z')||(temp>='A'&&temp<='Z')||(temp=='_')||(UserName.indexOf(temp)!=-1)))

        Error+="用户名必须由数字、字母和下划线构成<br>";

        allOk=false;

    }



    if(!LengthCheck(UserName,4,20))

    { 

       Error+="请检查用户名长度<br>";

       allOk=false;

    }

    if(NickName.length()==0)

    {

       Error+="请填写昵称<br>";

       NickName="";

       allOk=false;

    }

    if(Sex.equals("男"))

       Sex="0";

    else if(Sex.equals("女"))

       Sex="1";

    else 

       Sex="2";

    if(Password.length()==0)

    {

       Error+="请设置密码<br>";

       Password="";

       allOk=false;

    }

    if(!LengthCheck(Password,6,12))

    {

       Error+="密码长度应该在6-12位间<br>";

       allOk=false;

    }

    if((!LengthCheck(PwdConfirm,6,12))|(!Password.equals(PwdConfirm)))

    {

       Error+="请重新确认密码<br>";

       PwdConfirm="";

       allOk=false;

    }

    if(Question.length()==0)

    {

       Error+="请选择密码提示问题<br>";

       Question="";

       allOk=false;

    }

    if(Answer.length()==0)

    {

       Error+="请填写密码问题答案<br>";

       Answer="";

       allOk=false;

    }

    if(Email.indexOf('@')<=0)

    {

       Error+="邮件地址填写不正确，请重新填写<br>";

       Email="";

       allOk=false;

    }

    if(allOk)

    {    

    UserName=(String)session.getAttribute("UserName");

    NickName=(String)session.getAttribute("NickName");

    Sex=(String)session.getAttribute("Sex");

    Password=(String)session.getAttribute("Password");

    PwdConfirm=(String)session.getAttribute("PwdConfirm");

    Question=(String)session.getAttribute("Question");

    Answer=(String)session.getAttribute("Answer");

    Email=(String)session.getAttribute("Email");

    %>

       <jsp:forward page="reg22.jsp"/>

    <%

    }

    else

{    Error=(String)session.getAttribute("Error");	

    %>

       <jsp:forward page="reg_error.jsp"/>

   <% 

}

   %>

</body>

</html>


org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: 16 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
13: {
14: return ((str.length()>=MinLength)&&(str.length()<=MaxLength));
15: }
16: String UserName=request.getParameter("UserName");
17: String NickName=request.getParameter("NickName");
18: String Sex=request.getParameter("Sex");
19: String Password=request.getParameter("Password");


An error occurred at line: 17 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
14: return ((str.length()>=MinLength)&&(str.length()<=MaxLength));
15: }
16: String UserName=request.getParameter("UserName");
17: String NickName=request.getParameter("NickName");
18: String Sex=request.getParameter("Sex");
19: String Password=request.getParameter("Password");
20: String PwdConfirm=request.getParameter("PwdConfirm");


An error occurred at line: 18 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
15: }
16: String UserName=request.getParameter("UserName");
17: String NickName=request.getParameter("NickName");
18: String Sex=request.getParameter("Sex");
19: String Password=request.getParameter("Password");
20: String PwdConfirm=request.getParameter("PwdConfirm");
21: String Question=request.getParameter("Question");


An error occurred at line: 19 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
16: String UserName=request.getParameter("UserName");
17: String NickName=request.getParameter("NickName");
18: String Sex=request.getParameter("Sex");
19: String Password=request.getParameter("Password");
20: String PwdConfirm=request.getParameter("PwdConfirm");
21: String Question=request.getParameter("Question");
22: String Answer=request.getParameter("Answer");


An error occurred at line: 20 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
17: String NickName=request.getParameter("NickName");
18: String Sex=request.getParameter("Sex");
19: String Password=request.getParameter("Password");
20: String PwdConfirm=request.getParameter("PwdConfirm");
21: String Question=request.getParameter("Question");
22: String Answer=request.getParameter("Answer");
23: String Email=request.getParameter("Email");


An error occurred at line: 21 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
18: String Sex=request.getParameter("Sex");
19: String Password=request.getParameter("Password");
20: String PwdConfirm=request.getParameter("PwdConfirm");
21: String Question=request.getParameter("Question");
22: String Answer=request.getParameter("Answer");
23: String Email=request.getParameter("Email");
24: String Error=new String();


An error occurred at line: 22 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
19: String Password=request.getParameter("Password");
20: String PwdConfirm=request.getParameter("PwdConfirm");
21: String Question=request.getParameter("Question");
22: String Answer=request.getParameter("Answer");
23: String Email=request.getParameter("Email");
24: String Error=new String();
25:


An error occurred at line: 23 in the jsp file: /reg/reg_action.jsp
request cannot be resolved
20: String PwdConfirm=request.getParameter("PwdConfirm");
21: String Question=request.getParameter("Question");
22: String Answer=request.getParameter("Answer");
23: String Email=request.getParameter("Email");
24: String Error=new String();
25:
26: %>


Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:93)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:435)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:298)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:302)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
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seven_11 2009-03-13
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[Quote=引用 1 楼 gongyali2005 的回复:]
<%!%>里面不能使用request

[/Quote]

哦！！看到了。。。谢谢！！
zjc_love 2009-03-13
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同上
代码错误，导致不能编译
gongyali2005 2009-03-13
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<%!%>里面不能使用request
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