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Problems with bean example

mandlar suurla

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posted 14 years ago

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I got this code and there is error, i dont get this error meaning, there are quotes closed tags are closed, like
Multiple annotations found at this line:
- Attribute "<%
} else {
%>" has no value
- Missing quotes for attribute value

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<jsp:useBean id="login" class="LoginBean" scope="session" />
<jsp:setProperty property="*" name="login" />
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'loginBean.jsp' starting page</title>
    
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">    
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

 
  </head>
  
 <body>
  <% 
  if (login.getUsername() != null && login.getPassword() != null) { 
  %>
   <h2>Login information</h2>
   <h4>Username: <jsp:getProperty name="login" property="username" /></h4>
   <h4>Password: <jsp:getProperty name="login" property="password" /></h4>
   <hr />
 <jsp:setProperty name="login" property="username" value="" />  
  <%
  login.setPassword("");
  } else {
  %>
   
    <form method="post" >
     <p>Username: <input type="text" name="username" /></p>
     <p>Password: <input type="password" name="password" /></p>
     <p><input type="submit" value="Login" /></p>
    </form>
  <% 
  }
  %>
  </body>
</html>

:shocked:

Bear Bibeault

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posted 14 years ago

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What I find shocking is that people are still using Java code in JSPs at this point. Why are you not employing the JSTL and EL for this?

In any case, I copied the code to my system and it runs just fine on Tomcat 5.5. I suspect that you are not showing us the actual code that is causing the problems.
[ September 03, 2008: Message edited by: Bear Bibeault ]

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mandlar suurla

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oh this the full code, i took this code from book JSP, so your talking this isn't right way of using jsp? But then you need to recommend some better book

Here is the bean part

mandlar suurla

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Do i have something wrong with the place of bean file?

Bear Bibeault

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That would not result in a translation error.

Perhaps it would be best to show us the exact error message that you are getting (be sure to use CODE tags to preserve formatting). I'm still doubting that you are showing us accurate code or error text as the they don't match up,

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mandlar suurla

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Now i got different exception and made picture of my web folders layout.
http://img395.imageshack.us/my.php?image=55565115lr8.jpg

type Exception report
 
message
 
description The server encountered an internal error () that prevented it from fulfilling this request.
 
exception
 
org.apache.jasper.JasperException: /jsp/TestWeb/WebRoot/loginBean.jsp(12,0) The value for the useBean class attribute LoginTestBean is invalid.
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1203)
org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1160)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2343)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2393)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2399)
org.apache.jasper.compiler.Node$Root.accept(Node.java:489)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2343)
org.apache.jasper.compiler.Generator.generate(Generator.java:3365)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:315)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:282)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ page import="test.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<jsp:useBean id="login" class="LoginTestBean" scope="session" />
<jsp:setProperty property="*" name="login" />
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'loginBean.jsp' starting page</title>
    
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">    
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

 
  </head>
  
 <body>
  <%  
  if (login.getUsername() != null && login.getPassword() != null) {  
  %>
   <h2>Login information</h2>
   <h4>Username: <jsp:getProperty name="login" property="username" /></h4>
   <h4>Password: <jsp:getProperty name="login" property="password" /></h4>
   <hr />
   <jsp:setProperty name="login" property="username" value="" />  
   <%
  login.setPassword("");
  } else {
  %>
    <form method="post" >
     <p>Username: <input type="text" name="username" /></p>
     <p>Password: <input type="password" name="password" /></p>
     <p><input type="submit" value="Login" /></p>
    </form>
  <% 
  }
  %>
  </body>
</html>

Bear Bibeault

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posted 14 years ago

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Check the following line carefully:

<jsp:useBean id="login" class="LoginTestBean" scope="session" />

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mandlar suurla

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posted 14 years ago

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you mean using in class attribute test.LoginTestBean ?

Seetharaman Venkatasamy

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posted 14 years ago

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Originally posted by mandlar suurla:
you mean using in class attribute test.LoginTestBean ?

yes. class attribute should fully qualified class name i.e packageName.ClassName

mandlar suurla

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Yeha i get the same error when i put there package name, now the path to class should be right. I dont know do i need to configure the web.xml?

Bear Bibeault

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Where did you place the class file?

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mandlar suurla

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classes is under WEB-INF folder its put there automatically as I use MyEclipse it makes the class file from src folder.

Bear Bibeault

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That is not what I asked. Where did you put the class file?

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mandlar suurla

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k here is the full path to class file

Bear Bibeault

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You put your web up under webapps/examples?

That's completely whacked up. What you have done is to mix your web up with the examples web app that came with Tomcat.

It needs to be in own folder directly under webapps (or elsewhere in the file structure), but not mixed up with another application!

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mandlar suurla

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k i made project under C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\WebTest

and web acces is from http://localhost/WebTest/WebRoot/loginBean.jsp, but still same error.

Bear Bibeault

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Where's the WEB-INF? Until your web app is properly set up, it just isn't going to work.

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mandlar suurla

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Here is current layout of folders:
C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\WebTest\WebRoot - main dir made by eclipse web project, here are jsp files

C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\WebTest\WebRoot\META-INF

C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\WebTest\WebRoot\WEB-INF - here are classes located, also lib folder, and off curse web.xml

Bear Bibeault

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Your WEB-INF must be in the root folder of the web app. You've got it buried one level too deep.

You're just guessing at this point. Please stop and actually read about how to properly structure a web application in the Servlet Specification or the Tomcat docs.
[ September 06, 2008: Message edited by: Bear Bibeault ]

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