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Posted to xmlrpc-dev@ws.apache.org by Jimisola Laursen <li...@jimisola.com> on 2006/09/14 00:18:41 UTC

Exception thrown when setting content length optional to true

Hi!

I am trying to send a file over XMLRPC using an byte array (byte[]), but an
exception is thrown when content length optional is set to true.
At first I thought it had to do with the byte array, but I this exception
with a simple ping/echo method as well.

I am using PropertyHandlerMapping on the server-side and a Proxy solution on
the Agent side.
I've used this same setup before, but I had to recreate the test from
scratch so I am thinking that  I might have missed out on something.
But since it works when content length optional is set to false I have my
doubts.

Regards,
Jimisola

These are the outputs that I get:
 
Client:
 
 [Fatal Error] :2:6: The processing instruction target matching
"[xX][mM][lL]" is not allowed.
Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
	at $Proxy0.echo(Unknown Source)
	at xmlrpctest.Client.main(Client.java:33)
Caused by: org.apache.xmlrpc.client.XmlRpcClientException: Failed to parse
servers response: The processing instruction target matching "[xX][mM][lL]"
is not allowed.
	at
org.apache.xmlrpc.client.XmlRpcStreamTransport.readResponse(XmlRpcStreamTransport.java:177)
	at
org.apache.xmlrpc.client.XmlRpcStreamTransport.sendRequest(XmlRpcStreamTransport.java:145)
	at
org.apache.xmlrpc.client.XmlRpcHttpTransport.sendRequest(XmlRpcHttpTransport.java:94)
	at
org.apache.xmlrpc.client.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:53)
	at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:166)
	at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:136)
	at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlRpcClient.java:125)
	at
org.apache.xmlrpc.client.util.ClientFactory$1.invoke(ClientFactory.java:104)
	... 2 more
	
Server:
lFatal Error] :1:1: Content is not allowed in prolog.

The code:

package xmlrpctest;

import java.io.IOException;
import java.net.InetAddress;

import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.server.PropertyHandlerMapping;
import org.apache.xmlrpc.server.XmlRpcServer;
import org.apache.xmlrpc.server.XmlRpcServerConfigImpl;
import org.apache.xmlrpc.webserver.WebServer;

public class Server
{
    public static void main(String[] args) throws XmlRpcException,
IOException
    {
        WebServer webServer = new WebServer(8080,
InetAddress.getByName("localhost"));
        
        XmlRpcServer xmlRpcServer = webServer.getXmlRpcServer();

        // use reflection for (dynamic) mapping
        PropertyHandlerMapping phm = new PropertyHandlerMapping();

        // add handler - using full name for use by dynamic proxy
        phm.addHandler(TestRPC.class.getName(), TestRPCImpl.class);        
        xmlRpcServer.setHandlerMapping(phm);
        
        XmlRpcServerConfigImpl serverConfig = (XmlRpcServerConfigImpl)
xmlRpcServer.getConfig();
        serverConfig.setEnabledForExtensions(true);
        serverConfig.setContentLengthOptional(true);

        webServer.start();
    }
}

package xmlrpctest;

import java.io.FileInputStream;
import java.net.URL;

import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
import org.apache.xmlrpc.client.XmlRpcCommonsTransportFactory;
import org.apache.xmlrpc.client.util.ClientFactory;

public class Client
{
    public static void main(String[] args) throws Exception
    {
        URL url = new URL("http://localhost:8080/RPC2");

        XmlRpcClientConfigImpl clientConfig = new XmlRpcClientConfigImpl();

        clientConfig.setServerURL(url);
        clientConfig.setEnabledForExtensions(true);
        clientConfig.setContentLengthOptional(true);
        XmlRpcClient client = new XmlRpcClient();

        // use Commons HttpClient as transport
        client.setTransportFactory(new
XmlRpcCommonsTransportFactory(client));
        // set configuration
        client.setConfig(clientConfig);

        // make a call using dynamic proxy
        ClientFactory factory = new ClientFactory(client);
        TestRPC testRPC = (TestRPC) factory.newInstance(TestRPC.class);

        System.out.println(testRPC.echo("ping"));

        /*
        FileInputStream fis = new FileInputStream("/tmp/java.txt");
        byte[] ba = new byte[fis.available()];
        
        fis.read(ba);
        fis.close();
        int length = testRPC.upload(ba);
        
        System.out.println(length);
        */
    }
}

package xmlrpctest;

import org.apache.xmlrpc.XmlRpcException;

public interface TestRPC
{
    int upload(byte[] data) throws XmlRpcException, Exception;

    String echo(String s);

}

package xmlrpctest;

import java.io.FileOutputStream;

import org.apache.xmlrpc.XmlRpcException;

public class TestRPCImpl implements TestRPC
{

    public int upload(byte[] data) throws XmlRpcException, Exception
    {
        FileOutputStream fos = new FileOutputStream("/tmp/java.txt.out");
        fos.write(data);
        fos.close();
        
        return data.length;
    }

    public String echo(String s)
    {
        System.out.println("Returning: " + s);
        return s;
    }
}

pom.xml:
<?xml version="1.0" encoding="UTF-8"?><project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>test</groupId>
  <artifactId>test</artifactId>
  <version>0.0.1</version>
  <description></description>
  <dependencies>
    <dependency>
      <groupId>org.apache.xmlrpc</groupId>
      <artifactId>xmlrpc-common</artifactId>
      <version>3.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.xmlrpc</groupId>
      <artifactId>xmlrpc-client</artifactId>
      <version>3.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.xmlrpc</groupId>
      <artifactId>xmlrpc-server</artifactId>
      <version>3.0</version>
    </dependency>
            <dependency>
                <artifactId>commons-codec</artifactId>
                <groupId>commons-codec</groupId>
                <version>1.3</version>
            </dependency>

            <dependency>
                <artifactId>commons-httpclient</artifactId>
                <groupId>commons-httpclient</groupId>
                <version>3.0.1</version>
            </dependency>

            <dependency>
                <artifactId>commons-lang</artifactId>
                <groupId>commons-lang</groupId>
                <version>2.1</version>
            </dependency>
  </dependencies>
</project>
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[Fatal Error] messages in catalina.out

Posted by Sreenath Nampally <sr...@tigr.ORG>.

I am getting following messages in my catalina.out file . I am using
Tomcat 5.0.28
with xmlrpc3.0 . 

[Fatal Error] :1:15: The ' = ' character must follow "version0" in the
XML declaration.
[Fatal Error] :1:1: Content is not allowed in prolog.
[Fatal Error] :1:20: XML document structures must start and end within
the same entity.
[Fatal Error] :1:1: Content is not allowed in prolog.
[Fatal Error] :1:27: XML version "1. coding=" is not supported, only XML
1.0 is supported.

I am setting setContentLengthOptional(true) and
setEnabledForExtensions(true)
for both client and server config objects.

    xmlRpcClinetconfig = new XmlRpcClientConfigImpl();
   xmlRpcClinetconfig.setContentLengthOptional(true);
   xmlRpcClinetconfig.setEnabledForExtensions(true);

     XmlRpcServerConfigImpl serverConfig =
                  (XmlRpcServerConfigImpl) xmlRpcServer.getConfig();
    serverConfig.setEnabledForExtensions(true);
    serverConfig.setContentLengthOptional(true);

My XML seems to be fine but I am not setting any encoding in the header.
  
Any ideas what's causing these errors ?

Thanks
Sree


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