Java NoClassDefFoundError

Question

I can compile the Java Web Service client fine with the following command:

javac 
     -classpath lib\spring-ws-2.0.0-M2-all.jar;lib\xml-apis.jar;lib\j2ee.jar;lib\saaj.jar;lib\saaj-impl.jar 
     WebServiceClient.java

When I actually run it (java WebServiceClient), it gives me the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/ws/client/core/WebServiceTemplate
        at WebServiceClient.<init>(WebServiceClient.java:14)
        at WebServiceClient.main(WebServiceClient.java:37)
Caused by: java.lang.ClassNotFoundException: org.springframework.ws.client.core.
WebServiceTemplate
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        ... 2 more

Here's the code for WebServiceClient.java:

import java.io.StringReader;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.springframework.ws.WebServiceMessageFactory;
import org.springframework.ws.client.core.WebServiceTemplate;
import org.springframework.ws.transport.WebServiceMessageSender;

public class WebServiceClient {

    private static final String MESSAGE =
        "<message xmlns=\"http://tempuri.org\"&gt;Hello Web Service World</message>";

    private final WebServiceTemplate webServiceTemplate = new WebServiceTemplate();

    public void setDefaultUri(String defaultUri) {
        webServiceTemplate.setDefaultUri(defaultUri);
    }

    // send to the configured default URI
    public void simpleSendAndReceive() {
        StreamSource source = new StreamSource(new StringReader(MESSAGE));
        StreamResult result = new StreamResult(System.out);
        webServiceTemplate.sendSourceAndReceiveToResult(source, result);
    }

    // send to an explicit URI
    public void customSendAndReceive() {
        StreamSource source = new StreamSource(new StringReader(MESSAGE));
        StreamResult result = new StreamResult(System.out);
        webServiceTemplate.sendSourceAndReceiveToResult("http://wsdl",
            source, result);
    }

    public static void main(String[] args) throws Exception {
        WebServiceClient ws = new WebServiceClient();
        ws.setDefaultUri("http://wsdl");
        ws.simpleSendAndReceive();
    }
}

Any help is appreciated.

Answer 1

Try

java -classpath lib\spring-ws-2.0.0-M2-all.jar;lib\xml-apis.jar;lib\j2ee.jar;lib\saaj.jar;lib\saaj-impl.jar WebServiceClient

I suppose your folder structure is as follows;

\WebServiceClient.java
\WebServiceClient.class
\lib\spring-ws-2.0.0-M2-all.jar
\lib\xml-apis.jar
\lib\j2ee.jar
\lib\saaj.jar
\lib\saaj-impl.jar

Answer 2

When you passed in that classpath to your javac invocation, it was necessary because your classes referenced files that were defined only in those JARs.

The same holds true at runtime as well, your compiled Java bytecode will need to be able to "see" those JARs in order to load the classes and use the Spring functionality. So you can't merely invoke java WebServiceClient and expect it to work.

Instead you'll need to invoke the command that pakore's answer shows, which looks like it should work. If in doubt, after successfully compiling, press the Up arrow to rebuffer the last command, delete the c from javac and delete the .java from the filename at the end. (If your shell doesn't support this, copy-and-paste the previous line via e.g. Notepad).