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Hello,
I have created a simple web project with MyEclipse 4.0.3 GA which contents is :
– a class called “Class” in a package called “com.asmalltest.general”.
– a test.jsp file :importing the class at the beginning of the file
<%@ page import="com.asmalltest.general.Class" %>and using an instance in the body :
<body> <% Class anObject = new Class("Property Value"); out.println(anObject.getProperty()); %> </body>The deployment on Tomcat 5.5.12 works well, nevertheless, an error occurs when I click in order to display the test.jsp file :
org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP
Erreur de servlet générée:
Only a type can be imported. com.asmalltest.general.Class resolves to a package
I have watched some other topics on the forums before writing this one and this seems to be probably quite the same problem as the subject entitled “the import org.apache.log4j can not be resolved”, but in this case the class required is inside the project and not an in an external JAR.
After some searches on the Internet I found this could come from the CLASSPATH variable but I am not sure about this and I wonder which value to set in in order to make each web project works fine.
Any advice is welcome,
Thanks and Regards,
pg33
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Here is my configuration summary :
*** Date: Fri Dec 09 11:07:39 CET 2005
*** System properties:
OS=WindowsXP
OS version=5.1
Java version=1.5.0_03*** MyEclipse details:
MyEclipse Enterprise WorkbenchVersion: 4.0.3 GA
Build id: 20051025-4.0.3-GA*** Eclipse details:
Eclipse SDKVersion: 3.1.1
Build id: M20050929-0840SDK du projet Eclipse
Version : 3.1.1
ID compilation : M20050929-0840Plateforme Eclipse
Version : 3.1.1
ID compilation : M20050929-0840Outils de développement Java Eclipse
Version : 3.1.1
ID compilation : I20050627-1435Eclipse RCP
Version: 3.1.1
Build id: I20050627-1435Environnement de développement du plug-in Eclipse
Version: 3.1.1
ID compilation : I20050627-1435Eclipse startup command=-os
win32
-ws
win32
-arch
x86
-launcher
C:\Program Files\Eclipse 3.1\eclipse\eclipse.exe
-name
Eclipse
-showsplash
600
-exitdata
bc4_4c
-vm
C:\jdk1.5.0_03\bin\javaw.exepg33,
Please post the ENTIRE contents of your Class file here, use the “code” button below to wrap it, so the formatting is maintained.I have a feeling either your package statement is wrong, or there is a problem caused by you using the name “Class”. It’s typically a good idea not to use well known names for your own class names.
Hello,
I agree with you for the advice about the class name so I renamed it “Example” and I retried.
Here is the complete code of Example.java :
package com.asmalltest.general; public class Example { private String property; public String getProperty() { return property; } public Example(String argProperty) { this.property = argProperty; } }and the complete related error message :
org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP Erreur de servlet générée: Only a type can be imported. com.asmalltest.general.Example resolves to a package Une erreur s'est produite à la ligne: 28 dans le fichier jsp: /WebRoot/test.jsp Erreur de servlet générée: The constructor Class(String) is undefined Une erreur s'est produite à la ligne: 28 dans le fichier jsp: /WebRoot/test.jsp Erreur de servlet générée: The method getProperty() is undefined for the type Class 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:409) org.apache.jasper.compiler.Compiler.compile(Compiler.java:288) org.apache.jasper.compiler.Compiler.compile(Compiler.java:267) org.apache.jasper.compiler.Compiler.compile(Compiler.java:255) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293) 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)The Tomcat error message “<classname> resolves to a package” is, at my point of view, not appropriate for the situation because there is really a class called Example.java in a real package.
As for system variables :
CLASSPATH=C:\Oracle\ora92\jdbc\lib\classes12.zip;C:\Oracle\ora92\jdbc\lib\nls_charset12.zip
(info added by the installation of a version of Oracle coming from a disk delivered with a SQL/Oracle book)
JAVA_HOME=C:\jdk1.5.0_03
CATALINA_HOME=C:\Program Files\Apache Software Foundation\Tomcat 5.5I should also add that my web projects used to work until late October, when I updated Tomcat (5.0 before) and MyEclipse. That is why I created a simple web project to test the problem.
pg
Sorry, I forgot to change the test.jsp use of “Example” instead of “Class”.
Here is the entire code of test.jsp :
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@ page import="com.asmalltest.general.Example" %> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'test.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"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <% Example anObject = new Example("Property Value"); out.println(anObject.getProperty()); %> </body> </html>and the entire error message displayed in Tomcat (this time with Example) :
org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP Erreur de servlet générée: Only a type can be imported. com.asmalltest.general.Example resolves to a package Une erreur s'est produite à la ligne: 28 dans le fichier jsp: /WebRoot/test.jsp Erreur de servlet générée: Example cannot be resolved to a type Une erreur s'est produite à la ligne: 28 dans le fichier jsp: /WebRoot/test.jsp Erreur de servlet générée: Example cannot be resolved to a type 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:409) org.apache.jasper.compiler.Compiler.compile(Compiler.java:288) org.apache.jasper.compiler.Compiler.compile(Compiler.java:267) org.apache.jasper.compiler.Compiler.compile(Compiler.java:255) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293) 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)This baffles me, can you send me this project?
File > Export > ZIP, email it to support@genuitec.com ATTN Riyad, and provide a link to this post so I know why I’m getting it please.
I got your project, imported it and rebuilt it, nothing was wrong at all. No error markers, autocomplete worked fine, everything is a-ok. This makes me think something is going on with your JDK setup.
When the error marker pops up on your side, is it in the left margin or right margin?
Hello,
First sorry for my late answer, I forgot to check the notification checkbox in my last reply so I saw your message only yesterday.
I finally uninstalled MyEclipse (3.8.4, 4.0, 4.0.3), Eclipse 3.1.1, Eclipse 3.0, Tomcat and reinstalled Eclipse 3.1.1, MyEclipse 4.0.3 and Tomcat 5.5.12 from scratch. Instead of waiting 5 minutes to run Eclipse, now the delay is only 15 seconds. Maybe there were too much unused plug-ins in my previous configuration…
I retried the Test project and it works. I tried for a while to find what was wrong before and I noticed that when the application is deployed from MyEclipse it works, but when it is deployed from Tomcat the error “Only a type can be imported” occurs. I think that I have to learn a lot about J2EE development and application servers.
Thank you for your time, this topic can be closed.
