Re: applet, module, Class.forName() - ClassNotFoundException
Gabor Bartha wrote:
Hi,
summarized:
I have an applet in a jar with outer classes (java modules). There are
several classes in the jar and beside the jar.
When the applet is running (from the jar) it finds the classes inside
the jar, but is unable to find the classes beside the jar.
I have the jar file: /myApp/main.jar
I have the classes: /myApp/outclasses/needed/req.class
/myApp/outclasses/eq.class
When Class.forName(outclasses/needed/req) is called,
ClassNotFoundExecption occures. I have pipeline for the jar, and for
class:
Try then:
map:match pattern=*.jar
map:read src={1}.jar mime-type=application/java-archive/
/map:match
map:match pattern=*.class
map:read src={1}.class mime-type=application/java-class/
/map:match
map:match pattern=**.class
map:read src={1}.class mime-type=application/java-class/
/map:match
If I use the map:match pattern=**.class pipeline, the classes
inside the jar cannot be loaded, and ClassNotFoundException occures.
I don't know what **class has to do with the jar, may be you have a
problem somewhere else (i.e., in your APPLET tag).
Vadim
Gabor
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Re: applet, module, Class.forName() - ClassNotFoundException
You should match **.class. Not using ** definitely will not let you
access .class files in sub-directories, and may simply be covering
another problem with accessing the jar.
After you re-enable **.class matching, attempt to access your jar by
typing in its URL in the browser. Then, try to access the problematic
.class by tying in the URL in the browser. Then, inspect the log files
(WEB-INF/logs/access.log for which files are accessed,
WEB-INF/logs/sitemap.log for how the file is served and for errors, and
WEB-INF/logs/error.log just in case).
If your browser can access the files individually, then Cocoon is doing
its job, and the JVM should be able to access all the files as well.
Look for the problem elsewhere.
Can you also post the HTML code that is used to establish the applet? I
wonder if there are issues with CODEBASE or ARCHIVE parameters?
A couple of more hints:
I assume that you had compiled your req class with package
outclasses.needed; in the beginnning of the source file, and aren't
simply placing the class file in the outclasses directory. Is that correct?
Are you running your servlet container behind a web-server, like Apache?
Or are you running, say, Tomcat directly on port 80? If it's the former,
look at the web server's access log to determine which files are
requested by the browser. Maybe some of them are not reaching the
servlet container? A problem with JkMount, in case of Tomcat could be
the issue.
Try unpacking your jar into /myApp directory. Does that work?
Alternatively, try putting your outer class files inside the jar. Does
that work?
I'm running out of suggestions. Need more info.
--
Ilya
Gabor Bartha wrote:
Hi,
summarized:
I have an applet in a jar with outer classes (java modules). There are
several classes in the jar and beside the jar.
When the applet is running (from the jar) it finds the classes inside
the jar, but is unable to find the classes beside the jar.
I have the jar file: /myApp/main.jar
I have the classes: /myApp/outclasses/needed/req.class
/myApp/outclasses/eq.class
When Class.forName(outclasses/needed/req) is called,
ClassNotFoundExecption occures. I have pipeline for the jar, and for
class:
map:match pattern=*.jar
map:read src={1}.jar mime-type=application/java-archive/
/map:match
map:match pattern=*.class
map:read src={1}.class mime-type=application/java-class/
/map:match
If I use the map:match pattern=**.class pipeline, the classes
inside the jar cannot be loaded, and ClassNotFoundException occures.
Gabor
-
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FAQ before posting. http://xml.apache.org/cocoon/faq/index.html
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Re: applet, module, Class.forName() - ClassNotFoundException
Hi Ilya
the **.class is working fine. The trouble was with my jar file, it was
obfuscated in a wrong way.
Thanks again,
Gabor
Ilya A. Kriveshko wrote:
You should match **.class. Not using ** definitely will not let you
access .class files in sub-directories, and may simply be covering
another problem with accessing the jar.
After you re-enable **.class matching, attempt to access your jar by
typing in its URL in the browser. Then, try to access the problematic
.class by tying in the URL in the browser. Then, inspect the log files
(WEB-INF/logs/access.log for which files are accessed,
WEB-INF/logs/sitemap.log for how the file is served and for errors, and
WEB-INF/logs/error.log just in case).
If your browser can access the files individually, then Cocoon is doing
its job, and the JVM should be able to access all the files as well.
Look for the problem elsewhere.
Can you also post the HTML code that is used to establish the applet? I
wonder if there are issues with CODEBASE or ARCHIVE parameters?
A couple of more hints:
I assume that you had compiled your req class with package
outclasses.needed; in the beginnning of the source file, and aren't
simply placing the class file in the outclasses directory. Is that
correct?
Are you running your servlet container behind a web-server, like Apache?
Or are you running, say, Tomcat directly on port 80? If it's the former,
look at the web server's access log to determine which files are
requested by the browser. Maybe some of them are not reaching the
servlet container? A problem with JkMount, in case of Tomcat could be
the issue.
Try unpacking your jar into /myApp directory. Does that work?
Alternatively, try putting your outer class files inside the jar. Does
that work?
I'm running out of suggestions. Need more info.
--
Ilya
Gabor Bartha wrote:
Hi,
summarized:
I have an applet in a jar with outer classes (java modules). There are
several classes in the jar and beside the jar.
When the applet is running (from the jar) it finds the classes inside
the jar, but is unable to find the classes beside the jar.
I have the jar file: /myApp/main.jar
I have the classes: /myApp/outclasses/needed/req.class
/myApp/outclasses/eq.class
When Class.forName(outclasses/needed/req) is called,
ClassNotFoundExecption occures. I have pipeline for the jar, and for
class:
map:match pattern=*.jar
map:read src={1}.jar mime-type=application/java-archive/
/map:match
map:match pattern=*.class
map:read src={1}.class mime-type=application/java-class/
/map:match
If I use the map:match pattern=**.class pipeline, the classes
inside the jar cannot be loaded, and ClassNotFoundException occures.
Gabor
-
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Re: applet, module, Class.forName() - ClassNotFoundException
Gabor Bartha wrote:
Hi All,
I have a java applet in a jar file and there are several class files
beside the jar, which files (modules) can be loaded by the applet with
the Class.forName() and newInstance() methods. My applet works well as
far as it has to load a module, at that time ClassNotFoundException
occures.
I put the following pipeline into my sitemap.xmap, but it is not working.
map:match pattern=*.class
If your classes are within some package (not in default package), you
will have to match on **.class:
map:match pattern=**.class
Vadim
map:read src={1}.class mime-type=application/java-class/
/map:match
Can anybody help me?
Gabor
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Re: applet, module, Class.forName() - ClassNotFoundException
It doesn't work.
A few classes are in the jar, the others are beside the jar in the
proper directories (as they are in the packages).
During the running of the applet every class is loaded by the
Class.forName(), ... method.
- If I use map:match pattern=**.class the classes which are in the
jar cannot be loaded.
- If I use map:match pattern=*.class the classes which are beside
the jar cannot be loaded.
Gabor
Vadim Gritsenko wrote:
Gabor Bartha wrote:
Hi All,
I have a java applet in a jar file and there are several class files
beside the jar, which files (modules) can be loaded by the applet with
the Class.forName() and newInstance() methods. My applet works well as
far as it has to load a module, at that time ClassNotFoundException
occures.
I put the following pipeline into my sitemap.xmap, but it is not
working.
map:match pattern=*.class
If your classes are within some package (not in default package), you
will have to match on **.class:
map:match pattern=**.class
Vadim
map:read src={1}.class mime-type=application/java-class/
/map:match
Can anybody help me?
Gabor
-
Please check that your question has not already been answered in the
FAQ before posting. http://xml.apache.org/cocoon/faq/index.html
To unsubscribe, e-mail: [EMAIL PROTECTED]
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.
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Re: applet, module, Class.forName() - ClassNotFoundException
Do you have the pipeline for the jar?
--
Ilya
Gabor Bartha wrote:
It doesn't work.
A few classes are in the jar, the others are beside the jar in the
proper directories (as they are in the packages).
During the running of the applet every class is loaded by the
Class.forName(), ... method.
- If I use map:match pattern=**.class the classes which are in the
jar cannot be loaded.
- If I use map:match pattern=*.class the classes which are beside
the jar cannot be loaded.
Gabor
Vadim Gritsenko wrote:
Gabor Bartha wrote:
Hi All,
I have a java applet in a jar file and there are several class files
beside the jar, which files (modules) can be loaded by the applet with
the Class.forName() and newInstance() methods. My applet works well as
far as it has to load a module, at that time ClassNotFoundException
occures.
I put the following pipeline into my sitemap.xmap, but it is not
working.
map:match pattern=*.class
If your classes are within some package (not in default package), you
will have to match on **.class:
map:match pattern=**.class
Vadim
map:read src={1}.class mime-type=application/java-class/
/map:match
Can anybody help me?
Gabor
-
Please check that your question has not already been answered in the
FAQ before posting. http://xml.apache.org/cocoon/faq/index.html
To unsubscribe, e-mail: [EMAIL PROTECTED]
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.
-
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FAQ before posting. http://xml.apache.org/cocoon/faq/index.html
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