Xml-rpc

[galaxyAbstractor]

I am experimenting with XML-RPC, but I'm kind of stuck.

The serverside is PHP, while the client is in JAVA

Server:

<?php
/*
* First, we define some PHP functions to expose via
* XML-RPC. Any functions that will be called by a
* XML-RPC client need to take three parameters:
* The first parameter passed is the name of the
* XML-RPC method called, the second is an array
* Containing the parameters sent by the client, and
* The third is any data sent in the app_data
* parameter of the xmlrpc_server_call_method()
* function (see below).
*/
function uptime_func($method_name, $params, $app_data)
{
return "blahblah";
}
function greeting_func($method_name, $params, $app_data)
{
$name = $params[0];
return "Hello, $name. How are you today?";
}
/*
* This creates a server and sets a handle for the
* server in the variable $xmlrpc_server
*/
$xmlrpc_server = xmlrpc_server_create();
/*
* xmlrpc_server_register_method() registers a PHP
* function as an XML-RPC method. It takes three
* parameters:
* The first is the handle of a server created with
* xmlrpc_server_create(), the second is the name to
* register the server under (this is what needs to
* be in the <methodName> of a request for this
* method), and the third is the name of the PHP
* function to register.
*/
xmlrpc_server_register_method($xmlrpc_server, "greeting", "greeting_func");
xmlrpc_server_register_method($xmlrpc_server, "uptime", "uptime_func");
/*
* When an XML-RPC request is sent to this script, it
* can be found in the raw post data.
*/
$request_xml = $HTTP_RAW_POST_DATA;
/*
* The xmlrpc_server_call_method() sends a request to
* the server and returns the response XML. In this case,
* it sends the raw post data we got before. It requires
* 3 arguments:
* The first is the handle of a server created with
* xmlrpc_server_create(), the second is a string containing
* an XML-RPC request, and the third is for application data.
* Whatever is passed into the third parameter of this function
* is passed as the third paramater of the PHP function that the
* request is asking for.
*/
$response = xmlrpc_server_call_method($xmlrpc_server, $request_xml, '');
// Now we print the response for the client to read.
print $response;
/*
* This method frees the resources for the server specified
* It takes one argument, a handle of a server created with
* xmlrpc_server_create().
*/
xmlrpc_server_destroy($xmlrpc_server);
?>

Client:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package xmlrpcclient;

import java.net.URL;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;

class Main {

public static void main( String[] args ) throws Exception
{


    XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
    config.setServerURL(new URL("http://localhost/xml/index.php"));
    XmlRpcClient client = new XmlRpcClient();
    client.setConfig(config);
    Object[] params = new Object[]{new Integer(33), new Integer(9)};
    Integer result = (Integer) client.execute("uptime", params);
    System.out.println(result);
   
}

}

I am using Apache XML-RPC as java package, http://ws.apache.org/xmlrpc/

I get this error:

run:
Exception in thread "main" org.apache.xmlrpc.client.XmlRpcClientException: Failed to parse server's response: Expected methodResponse element, got br
at org.apache.xmlrpc.client.XmlRpcStreamTransport.rea dResponse(XmlRpcStreamTransport.java:180)
at org.apache.xmlrpc.client.XmlRpcStreamTransport.sen dRequest(XmlRpcStreamTransport.java:14
at org.apache.xmlrpc.client.XmlRpcHttpTransport.sendR equest(XmlRpcHttpTransport.java:115)
at org.apache.xmlrpc.client.XmlRpcSunHttpTransport.se ndRequest(XmlRpcSunHttpTransport.java:69)
at org.apache.xmlrpc.client.XmlRpcClientWorker.execut e(XmlRpcClientWorker.java:56)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlR pcClient.java:167)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlR pcClient.java:137)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlR pcClient.java:126)
at xmlrpcclient.Main.main(Main.java:23)
Caused by: org.xml.sax.SAXParseException: Expected methodResponse element, got br
at org.apache.xmlrpc.parser.XmlRpcResponseParser.star tElement(XmlRpcResponseParser.java:101)
at com.sun.org.apache.xerces.internal.parsers.Abstrac tSAXParser.startElement(AbstractSAXParser.java:501 )
at com.sun.org.apache.xerces.internal.parsers.Abstrac tXMLDocumentParser.emptyElement(AbstractXMLDocumen tParser.java:179)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl.scanStartElement(XMLNSDocumentScann erImpl.java:377)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl$NSContentDriver.scanRootElementHook (XMLNSDocumentScannerImpl.java:626)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tFragmentScannerImpl$FragmentContentDriver.next(XM LDocumentFragmentScannerImpl.java:3095)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tScannerImpl$PrologDriver.next(XMLDocumentScannerI mpl.java:921)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tScannerImpl.next(XMLDocumentScannerImpl.java:64
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl.next(XMLNSDocumentScannerImpl.java: 140)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tFragmentScannerImpl.scanDocument(XMLDocumentFragm entScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Co nfiguration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Co nfiguration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLPars er.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.Abstrac tSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserI mpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.xmlrpc.client.XmlRpcStreamTransport.rea dResponse(XmlRpcStreamTransport.java:17
... 8 more
Caused by:
org.xml.sax.SAXParseException: Expected methodResponse element, got br
at org.apache.xmlrpc.parser.XmlRpcResponseParser.star tElement(XmlRpcResponseParser.java:101)
at com.sun.org.apache.xerces.internal.parsers.Abstrac tSAXParser.startElement(AbstractSAXParser.java:501 )
at com.sun.org.apache.xerces.internal.parsers.Abstrac tXMLDocumentParser.emptyElement(AbstractXMLDocumen tParser.java:179)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl.scanStartElement(XMLNSDocumentScann erImpl.java:377)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl$NSContentDriver.scanRootElementHook (XMLNSDocumentScannerImpl.java:626)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tFragmentScannerImpl$FragmentContentDriver.next(XM LDocumentFragmentScannerImpl.java:3095)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tScannerImpl$PrologDriver.next(XMLDocumentScannerI mpl.java:921)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tScannerImpl.next(XMLDocumentScannerImpl.java:64
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl.next(XMLNSDocumentScannerImpl.java: 140)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tFragmentScannerImpl.scanDocument(XMLDocumentFragm entScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Co nfiguration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Co nfiguration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLPars er.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.Abstrac tSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserI mpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.apache.xmlrpc.client.XmlRpcStreamTransport.rea dResponse(XmlRpcStreamTransport.java:17
at org.apache.xmlrpc.client.XmlRpcStreamTransport.sen dRequest(XmlRpcStreamTransport.java:14
at org.apache.xmlrpc.client.XmlRpcHttpTransport.sendR equest(XmlRpcHttpTransport.java:115)
at org.apache.xmlrpc.client.XmlRpcSunHttpTransport.se ndRequest(XmlRpcSunHttpTransport.java:69)
at org.apache.xmlrpc.client.XmlRpcClientWorker.execut e(XmlRpcClientWorker.java:56)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlR pcClient.java:167)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlR pcClient.java:137)
at org.apache.xmlrpc.client.XmlRpcClient.execute(XmlR pcClient.java:126)
at xmlrpcclient.Main.main(Main.java:23)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

Any ideas?

[misson]

The code you posted works for me. The message "Expected methodResponse element, got br" leads me to believe the client is getting HTML (specifically, a <br /> element) rather than an XML-RPC message. Access http://localhost/xml/index.php in a browser & see what you get. My guesses are the page is throwing an HTML formatted error message or the URL is wrong.

(quick note: when playing around with XML-RPC, it's incredibly easy to create a client in Python:

#!/usr/local/bin/env python

import xmlrpclib

serv=xmlrpclib.ServerProxy("http://localhost/xml/index.php")

print serv.uptime()
print serv.greeting('foo');

By the way, thanks for posting an informative help request. You even had a minimal test case!

[galaxyAbstractor]

Nah I got it. XML-RPC wasn't installed in LAMPP