Java tutorial
package edu.harvard.i2b2.common.util.axis2; /* * Copyright (c) 2006-2007 Massachusetts General Hospital * All rights reserved. This program and the accompanying materials * are made available under the terms of the i2b2 Software License v1.0 * which accompanies this distribution. * * Contributors: * Mike Mendis */ import java.io.StringReader; import javax.xml.stream.FactoryConfigurationError; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamException; import javax.xml.stream.XMLStreamReader; import org.apache.axiom.om.OMAbstractFactory; import org.apache.axiom.om.OMElement; import org.apache.axiom.om.OMNamespace; import org.apache.axiom.om.impl.builder.StAXOMBuilder; import org.apache.axiom.soap.SOAP11Constants; import org.apache.axiom.soap.SOAPEnvelope; import org.apache.axiom.soap.SOAPFactory; import org.apache.axis2.AxisFault; 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.context.MessageContext; import org.apache.axis2.context.ServiceContext; import org.apache.axis2.transport.http.HTTPConstants; import org.apache.axis2.wsdl.WSDLConstants; import org.apache.commons.httpclient.HostConfiguration; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import edu.harvard.i2b2.common.exception.I2B2Exception; import edu.harvard.i2b2.common.exception.StackTraceUtil; import edu.harvard.i2b2.common.util.jaxb.JAXBUtilException; public class ServiceClient { private static Log log = LogFactory.getLog(ServiceClient.class.getName()); //private static org.apache.axis2.client.ServiceClient serviceClient = null; public static String sendREST(String restEPR, String requestString) throws Exception { OMElement request = getPayLoad(requestString); return sendREST(restEPR, request); } public static String sendREST(String restEPR, OMElement request) throws Exception { String response = null; org.apache.axis2.client.ServiceClient serviceClient = null; try { serviceClient = new org.apache.axis2.client.ServiceClient(); ServiceContext context = serviceClient.getServiceContext(); MultiThreadedHttpConnectionManager connManager = (MultiThreadedHttpConnectionManager) context .getProperty(HTTPConstants.MULTITHREAD_HTTP_CONNECTION_MANAGER); if (connManager == null) { connManager = new MultiThreadedHttpConnectionManager(); context.setProperty(HTTPConstants.MULTITHREAD_HTTP_CONNECTION_MANAGER, connManager); connManager.getParams().setMaxTotalConnections(100); connManager.getParams().setMaxConnectionsPerHost(HostConfiguration.ANY_HOST_CONFIGURATION, 100); } HttpClient httpClient = new HttpClient(connManager); Options options = new Options(); options.setTo(new EndpointReference(restEPR)); options.setTransportInProtocol(Constants.TRANSPORT_HTTP); options.setProperty(Constants.Configuration.ENABLE_REST, Constants.VALUE_TRUE); options.setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient); options.setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Constants.VALUE_TRUE); serviceClient.setOptions(options); OMElement result = serviceClient.sendReceive(request); if (result != null) { response = result.toString(); log.debug(response); } } catch (Exception e) { log.debug("Cleanup Error .", e); e.printStackTrace(); throw new I2B2Exception("" + StackTraceUtil.getStackTrace(e)); } finally { if (serviceClient != null) { try { serviceClient.cleanupTransport(); serviceClient.cleanup(); } catch (AxisFault e) { log.debug("Error .", e); } } } return response; } public static MessageContext getSOAPFile(String frUrl, OMElement requestElement, String frOperationName, String timeout) throws AxisFault { org.apache.axis2.client.ServiceClient serviceClient = null; serviceClient = new org.apache.axis2.client.ServiceClient(); // OMElement getRequestElmt = getRequestPayLoad(); Options options = new Options(); options.setTo(new EndpointReference(frUrl)); options.setSoapVersionURI(SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI); // options.setProperty(Constants.Configuration.ENABLE_REST, Constants.VALUE_TRUE); options.setProperty(Constants.Configuration.ENABLE_SWA, Constants.VALUE_TRUE); options.setProperty(Constants.Configuration.ENABLE_MTOM, Constants.VALUE_FALSE); // Increase the time out to receive large attachments options.setTimeOutInMilliSeconds(Integer.parseInt(timeout)); options.setProperty(Constants.Configuration.CACHE_ATTACHMENTS, Constants.VALUE_TRUE); //ServiceClient sender = new ServiceClient(); serviceClient.setOptions(options); OperationClient mepClient = serviceClient .createClient(org.apache.axis2.client.ServiceClient.ANON_OUT_IN_OP); // SOAPFactory sfac = OMAbstractFactory.getSOAP11Factory(); SOAPFactory sfac = OMAbstractFactory.getSOAP12Factory(); SOAPEnvelope env = sfac.getDefaultEnvelope(); env.getBody().addChild(requestElement); MessageContext mc = new MessageContext(); mc.setEnvelope(env); mc.setDoingMTOM(false); mc.setDoingSwA(true); mepClient.addMessageContext(mc); mepClient.execute(true); return mepClient.getMessageContext(WSDLConstants.MESSAGE_LABEL_IN_VALUE); } public static OMElement getPayLoad(String requestPm) throws Exception { OMElement lineItem = null; try { StringReader strReader = new StringReader(requestPm); XMLInputFactory xif = XMLInputFactory.newInstance(); XMLStreamReader reader = xif.createXMLStreamReader(strReader); StAXOMBuilder builder = new StAXOMBuilder(reader); lineItem = builder.getDocumentElement(); } catch (FactoryConfigurationError e) { log.error(e.getMessage()); throw new Exception(e); } return lineItem; } public static String sendSOAP(String soapEPR, String requestString, String action, String operation) throws Exception { org.apache.axis2.client.ServiceClient serviceClient = null; serviceClient = new org.apache.axis2.client.ServiceClient(); OperationClient operationClient = serviceClient .createClient(org.apache.axis2.client.ServiceClient.ANON_OUT_IN_OP); // creating message context MessageContext outMsgCtx = new MessageContext(); // assigning message context's option object into instance variable Options opts = outMsgCtx.getOptions(); // setting properties into option // log.debug(soapEPR); opts.setTo(new EndpointReference(soapEPR)); opts.setAction(action); opts.setTimeOutInMilliSeconds(180000); log.debug(requestString); SOAPEnvelope envelope = null; try { SOAPFactory fac = OMAbstractFactory.getSOAP11Factory(); envelope = fac.getDefaultEnvelope(); OMNamespace omNs = fac.createOMNamespace("http://rpdr.partners.org/", "rpdr"); // creating the SOAP payload OMElement method = fac.createOMElement(operation, omNs); OMElement value = fac.createOMElement("RequestXmlString", omNs); value.setText(requestString); method.addChild(value); envelope.getBody().addChild(method); } catch (FactoryConfigurationError e) { log.error(e.getMessage()); throw new Exception(e); } outMsgCtx.setEnvelope(envelope); operationClient.addMessageContext(outMsgCtx); operationClient.execute(true); MessageContext inMsgtCtx = operationClient.getMessageContext("In"); SOAPEnvelope responseEnv = inMsgtCtx.getEnvelope(); OMElement soapResponse = responseEnv.getBody().getFirstElement(); OMElement soapResult = soapResponse.getFirstElement(); String i2b2Response = soapResult.getText(); log.debug(i2b2Response); return i2b2Response; } public static org.apache.axis2.client.ServiceClient getServiceClient() throws AxisFault { org.apache.axis2.client.ServiceClient serviceClient = null; if (serviceClient == null) { try { serviceClient = new org.apache.axis2.client.ServiceClient(); } catch (AxisFault e) { log.error(e.getMessage()); throw e; } } return serviceClient; } }