java.lang.NoClassDefFoundError with external jars in java applet
I have a Java applet which utilizes multiple external jars. In Eclipse the project runs fine. When it is exported and run embedded in a HTML file I get 22 run-time exceptions similar to..
java.lang.RuntimeException: java.lang.NoClassDefFoundError:
mil/dcgs/mdf/webservice/ddms/ingest/CatalogIngestService
..with various classes. When I open the exported jar 开发者_开发知识库I see no .class files or any other traces from the external jar.
HTML
The HTML is:
<html>
<head>
<title>DIB Applet</title>
</head>
<body>
<applet
code="org.mitre.inception.Main.class"
archive="inception.jar"
WIDTH = "1020"
HEIGHT = "500">
Applet
</applet>
</body>
</html>
.classpath
My .classpath looks like the following.
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="lib" path="C:/Users/myUserName/Desktop/jars/dcgs-util.jar"/>
<!-- more jars removed for space reasons as they look the same as above -->
<classpathentry kind="output" path="bin"/>
</classpath>
The classpath mentions dcgs-util.jar. That should probably be listed in the archive attribute of the applet element. Perhaps something like:
<html>
<head>
<title>DIB Applet</title>
</head>
<body>
<applet
code="org.mitre.inception.Main.class"
archive="inception.jar,jars/dcgs-util.jar"
WIDTH = "1020"
HEIGHT = "500">
Applet
</applet>
</body>
</html>
That would be assuming inception.jar was in the same directory as the HTML, and that dcgs-util.jar is in the jars sub-directory of the dir. where the HTML is located.
Try by using the following classpath. I just changed the order of the jar files.
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="lib" path="C:/Users/myUserName/Desktop/jars/dcgs-util.jar"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<!-- more jars removed for space reasons as they look the same as above -->
<classpathentry kind="output" path="bin"/>
</classpath>
加载中,请稍侯......
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