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"Bad types" error from BPEL invoke

Posts: 4
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I made a simple bpel procedure based on web service.
when I finished the bpel procedure, I release the bpel process on the tomcat.then I start tomcat engine, use the bpel address while give the operation name and parameters & values, the screen show the right result.
But when I use another method to invoke the bpel procedure ,there exist an error, I do not how to do with .
client invoke src code is as below:
import java.io.*;
import java.net.*;
import java.util.*;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import javax.xml.namespace.QName;
import org.apache.axis.server.AxisServer;
import org.apache.axis.MessageContext;
import org.apache.axis.description.OperationDesc;
import org.apache.axis.Message;
import org.apache.axis.encoding.XMLType;
import org.xml.sax.*;
import javax.xml.rpc.ParameterMode;

public class Customer

public static void main(String[] args) throws Exception
boolean tt=true;
String endpoint = "";
String operationName = "projectmanage";
Service service = new Service();
Call call = (Call) service.createCall();
call.setTargetEndpointAddress(new java.net.URL(endpoint));
call.addParameter( "invoke", XMLType.XSD_BOOLEAN, ParameterMode.IN );
call.invoke( new Object[] {new Boolean(tt)} );
the error exist is:
org.xml.sax.SAXException: Bad types (class java.lang.String -> class java.math.B:igInteger),

do you have the same question as me? If you have solved this problem ,please tell me the answer.thank you.
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Are you sure that the error is caused by the client code? No String or BigInteger is sent by it, so it seems more likely that is is caused by another call which the BPEL process makes in turn.

You could use a tool like TCPMon to observe the SOAP that is sent over the wire, just to make that the calls generated are OK.
nj toto
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I think there exist error in the client invoke code,because if I use another method ,the screen will show the true result.The another method is through entering the bpel procedure address at the IE url.The bpel procedure address is "".
I think my code is not some error,so I do not use the tcpmonitor to watch the soap request.Tonight I will use tcpmonitor to watch the detail soap request to see if there are some strange.
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