错误:
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 16 in the jsp file: /add_friend_save.jsp
Generated servlet error:
The operator == is undefined for the argument type(s) long, null
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 16 in the jsp file: /add_friend_save.jsp
Generated servlet error:
The operator == is undefined for the argument type(s) long, null
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.17
代码:
<%@ page contentType="text/html;charset=gb2312" language="java"%>
<%@ page import="java.sql.*" %>
<! 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>欢迎光临网上通讯录</title>
<link rel=stylesheet type=text/css href="./lib/bbs.css">
<jsp:useBean scope="page" id="Friend" class="com.zk.Friend"/>
<jsp:useBean scope="page" id="Pal" class="com.zk.Pal"/>
<jsp:useBean scope="page" id="ExecuteDB" class="com.zk.ExecuteDB"/>
</head>
<body bgcolor="#F5F5F5">
<div align="center">
<% request.setCharacterEncoding("gb2312");
long lUserID=(Long)session.getAttribute("UserID");
if(lUserID==null)
{out.println("lUserID的值为空!");}
else
{
String sFriendID=request.getParameter("FriendID");
long lFriendID=Long.parseLong("sFriendID");
Pal.setUserID(lUserID);
Pal.setFriendID(lFriendID);
}
if(Pal.add())
{out.println("<p align=center><font color=blue>恭喜你添加成功!</font></p>");
out.println("<p><input type=\"button\" name=\"btn\" value=\" 确定 \"onClick=\"javascript:window.location='add_friend_form.jsp'\"></p>");
}
else
{out.println("<p align=center><font color=blue>你的操作失败!</font></p>");
out.println("<p><font color=red>"+ExecuteDB.getErrMes()+"</font></p>");
out.println("<p><input type=\"button\" name=\"btn\" value=\" 返回 \"onClick=\"javascript:window.history.go(-1)\"></p>");
}
%>
</div>
</body>
</html>
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 16 in the jsp file: /add_friend_save.jsp
Generated servlet error:
The operator == is undefined for the argument type(s) long, null
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 16 in the jsp file: /add_friend_save.jsp
Generated servlet error:
The operator == is undefined for the argument type(s) long, null
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.17
代码:
<%@ page contentType="text/html;charset=gb2312" language="java"%>
<%@ page import="java.sql.*" %>
<! 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>欢迎光临网上通讯录</title>
<link rel=stylesheet type=text/css href="./lib/bbs.css">
<jsp:useBean scope="page" id="Friend" class="com.zk.Friend"/>
<jsp:useBean scope="page" id="Pal" class="com.zk.Pal"/>
<jsp:useBean scope="page" id="ExecuteDB" class="com.zk.ExecuteDB"/>
</head>
<body bgcolor="#F5F5F5">
<div align="center">
<% request.setCharacterEncoding("gb2312");
long lUserID=(Long)session.getAttribute("UserID");
if(lUserID==null)
{out.println("lUserID的值为空!");}
else
{
String sFriendID=request.getParameter("FriendID");
long lFriendID=Long.parseLong("sFriendID");
Pal.setUserID(lUserID);
Pal.setFriendID(lFriendID);
}
if(Pal.add())
{out.println("<p align=center><font color=blue>恭喜你添加成功!</font></p>");
out.println("<p><input type=\"button\" name=\"btn\" value=\" 确定 \"onClick=\"javascript:window.location='add_friend_form.jsp'\"></p>");
}
else
{out.println("<p align=center><font color=blue>你的操作失败!</font></p>");
out.println("<p><font color=red>"+ExecuteDB.getErrMes()+"</font></p>");
out.println("<p><input type=\"button\" name=\"btn\" value=\" 返回 \"onClick=\"javascript:window.history.go(-1)\"></p>");
}
%>
</div>
</body>
</html>
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