如何在soap请求里绑定一个文件

1、导入的类大致如下：
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import org.apache.axiom.attachments.Attachments;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.soap.SOAP11Constants;
import org.apache.axiom.soap.SOAPEnvelope;
import org.apache.axiom.soap.SOAPFactory;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.OperationClient;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.ConfigurationContextFactory;
import org.apache.axis2.context.MessageContext;

2、主要代码大致如下：
private static EndpointReference targetEPR = new EndpointReference("soap 的地址");
  Options options = new Options();
  options.setTo(targetEPR);
  options.setProperty(Constants.Configuration.ENABLE_SWA,      Constants.VALUE_TRUE);
            options.setSoapVersionURI(SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI);
            // Increase the time out when sending large attachments
            options.setTimeOutInMilliSeconds(100000);
            options.setTo(targetEPR);
//urn后面跟的是soap消息的名字
            options.setAction("urn:importTreeFile");
ConfigurationContext configContext = ConfigurationContextFactory
                    .createConfigurationContextFromFileSystem(null, null);
            ServiceClient sender = new ServiceClient(configContext, null);
            sender.setOptions(options);
            OperationClient mepClient = sender.createClient(ServiceClient.ANON_OUT_IN_OP);
//构建soap请求，并设置contentID,soap是通过contentID来找对应的文件的
ImportTreeFileRequestMsgDocument msg = ImportTreeFileRequestMsgDocument .Factory.newInstance()
ImportTreeFileRequestMsgDocument.setContentID("file");
DataHandler dh = null;
            MessageContext mc = new MessageContext();
            FileDataSource fds = new FileDataSource("文件名”);

            try {
                dh = new DataHandler(fds);
                } catch (RuntimeException e) {
                e.printStackTrace();
                }
                Attachments att = new Attachments();
                att.addDataHandler("file", dh);
                mc.setAttachmentMap(att);
                SOAPFactory fac = OMAbstractFactory.getSOAP11Factory();
                SOAPEnvelope env = fac.getDefaultEnvelope();

                env.getBody().addChild(toOM(msg, false));   
                mc.setEnvelope(env);

                mepClient.addMessageContext(mc);
                mepClient.execute(true);
                readAttachment(mc);   

private org.apache.axiom.om.OMElement toOM(
            com.huawei.www.ngin.routetree.ImportTreeFileRequestMsgDocument param, boolean optimizeContent) {
        org.apache.axiom.om.impl.builder.StAXOMBuilder builder = new org.apache.axiom.om.impl.builder.StAXOMBuilder(
                org.apache.axiom.om.OMAbstractFactory.getOMFactory(), new org.apache.axis2.util.StreamWrapper(param
                        .newXMLStreamReader()));
        org.apache.axiom.om.OMElement documentElement = builder.getDocumentElement();

        ((org.apache.axiom.om.impl.OMNodeEx) documentElement).setParent(null);
        return documentElement;
    }


private void readAttachment(org.apache.axis2.context.MessageContext messageContext) {

        String contentID = messageContext.getAttachmentMap().getAllContentIDs()[0];

        DataHandler dh = messageContext.getAttachment(contentID);

        dh.getDataSource().getName();

        InputStream is = null;
        try {
            is = dh.getInputStream();

            BufferedReader br = new BufferedReader(new InputStreamReader(is));

            String line = null;

            while ((line = br.readLine()) != null) {

                System.out.println("client read2:" + line);
            }

        } catch (IOException e) {
            e.printStackTrace();
        }

    }