Web Services以及Axis2技術之二
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本篇是繼關于Axis2發布Web Service之后的又一隨筆，此篇的主要任務是講述使用Axis2開發客戶端和服務器端的具體實現。相信大家在看本篇的時候已經具備了一定的Web Service開發基礎，因此我主要是以例子的方式來說明，文字會相對較少。同時，我會在最后提供幾個優秀的網址給大家。
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例一（簡單的字符串傳送服務實現）
客戶端：
com.udm.iudmservice.IUDMServiceStub stub = new com.udm.iudmservice.IUDMServiceStub();?
com.udm.iudmservice.types.GetUserAllRegServices param234 =? (com.udm.iudmservice.types.GetUserAllRegServices) getTestObject (com.udm.iudmservice.types.GetUserAllRegServices.class);
GetUserAllRegServicesResponse resp = stub.getUserAllRegServices(param234);
OMElement ret = resp.get_return()[0];
System.out.println(ret.getText());?????????????????????????????? //此為測試語句
服務器端：GetUserAllRegServicesResponse res = new GetUserAllRegServicesResponse();
OMElement resp = fac.createOMElement("Return", omNs);
resp.setText("返回的結果!");
System.out.println("返回結果為:" + resp.getText());? //此為測試語句
res.set_return(new OMElement[] { resp });
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例二（文件傳送的具體實現）客戶端：
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.om.OMText;
import org.apache.axiom.soap.SOAP11Constants;
import org.apache.axiom.soap.SOAP12Constants;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;
?
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.xml.namespace.QName;
import java.io.File;
import java.io.InputStream;
?
public class FileTransferClient {
?? private static EndpointReference targetEPR = new EndpointReference("http://127.0.0.1:8080/axis2/services/interop");
??
?? public static boolean upload(String mailboxnum, short greetingType, File file, String fileType) {
???? try {
????? OMElement data = buildUploadEnvelope(mailboxnum, greetingType, file, fileType);
????? Options options = buildOptions();
????? ServiceClient sender = new ServiceClient();
????? sender.setOptions(options);
????? System.out.println(data);
????? OMElement ome = sender.sendReceive(data);
????? System.out.println(ome);
????? String b = ome.getText();
????? return Boolean.parseBoolean(b);
???? }
???? catch(Exception e) {
??????
???? }
???? return false;
?? }
?? public static InputStream download(String mailboxnum, short greetingType, String FileType) {
???? try {
?????? OMElement data = buildDownloadEnvelope(mailboxnum, greetingType, FileType);
?????? Options options = buildOptions();
?????? ServiceClient sender = new ServiceClient();
?????? sender.setOptions(options);
?????? System.out.println(data);
?????? OMElement ome = sender.sendReceive(data);
?????? System.out.println(ome);
?????? OMText binaryNode = (OMText) ome.getFirstOMChild();
?????? DataHandler actualDH = (DataHandler) binaryNode.getDataHandler();
?????? return actualDH.getInputStream();
????? }
????? catch(Exception e) {
????? }
???? return null;
?? }
??
?? private static OMElement buildUploadEnvelope(String mailboxnum, short greetingType, File file, String FileType) {
???? DataHandler expectedDH;
???? OMFactory fac = OMAbstractFactory.getOMFactory();
???? OMNamespace omNs = fac.createOMNamespace("http://example.org/mtom/data", "x");
???? OMElement data = fac.createOMElement("upload", omNs);
???? OMElement fileContent = fac.createOMElement("fileContent", omNs);
???? FileDataSource dataSource = new FileDataSource(file);
???? expectedDH = new DataHandler(dataSource);
???? OMText textData = fac.createOMText(expectedDH, true);
???? fileContent.addChild(textData);
???? OMElement mboxnum = fac.createOMElement("mailboxnum", omNs);
???? mboxnum.setText(mailboxnum);
???? OMElement gtType = fac.createOMElement("greetingType", omNs);
???? gtType.setText(greetingType+"");
???? OMElement fileType=fac.createOMElement("fileType", omNs);
???? fileType.setText(FileType);
??
???? data.addChild(mboxnum);
???? data.addChild(gtType);
???? data.addChild(fileType);
???? data.addChild(fileContent);
???? return data;
?? }
?? private static OMElement buildDownloadEnvelope(String mailboxnum, short greetingType, String FileType) {
???? OMFactory fac = OMAbstractFactory.getOMFactory();
???? OMNamespace omNs = fac.createOMNamespace("http://example.org/mtom/data", "x");
???? OMElement data = fac.createOMElement("download", omNs);
???? OMElement mboxnum = fac.createOMElement("mailboxnum", omNs);
???? mboxnum.setText(mailboxnum);
???? OMElement gtType = fac.createOMElement("greetingType", omNs);
???? gtType.setText(greetingType+"");
???? OMElement fileType=fac.createOMElement("fileType", omNs);
???? fileType.setText(FileType);
???? data.addChild(mboxnum);
???? data.addChild(gtType);
???? data.addChild(fileType);
???? return data;
?? }
?? private static Options buildOptions() {
???? Options options = new Options();
???? options.setSoapVersionURI(SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI);
???? options.setTo(targetEPR);
???? // enabling MTOM in the client side
???? options.setProperty(Constants.Configuration.ENABLE_MTOM, Constants.VALUE_TRUE);
??? ?options.setTransportInProtocol(Constants.TRANSPORT_HTTP);
???? return options;
?? }
?? public static void main(String agrs[]) {??? //此為測試主函數
???? String file = "C:/deploy.wsdd";
???? short gt = 1;
???? String mn = "20060405";
???? String ft="wsdd";
???? boolean rtv = upload(mn,gt,new File(file),ft);
???? System.out.println(rtv);
???? InputStream is = download(mn,gt,ft);
?? }
}
服務器端：
import org.apache.axiom.attachments.utils.IOUtils;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.om.OMText;
import org.apache.axis2.AxisFault;
import java.io.FileOutputStream;
import java.io.*;
import java.util.Iterator;
?
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
?
public class interopService {
?public static final String TMP_PATH = "c:/tmp";
?public OMElement upload(OMElement element) throws Exception {
??? OMElement _fileContent = null;
??? OMElement _mailboxnum = null;
??? OMElement _greetingType = null;
??? OMElement _fileType = null;
??? System.out.println(element);
??? for (Iterator _iterator = element.getChildElements(); _iterator.hasNext();) {
????? OMElement _ele = (OMElement) _iterator.next();
????? if (_ele.getLocalName().equalsIgnoreCase("fileContent")) {
??????? _fileContent = _ele;
????? }
????? if (_ele.getLocalName().equalsIgnoreCase("mailboxnum")) {
??????? _mailboxnum = _ele;
????? }
????? if (_ele.getLocalName().equalsIgnoreCase("greetingType")) {
??????? _greetingType = _ele;
????? }
????? if (_ele.getLocalName().equalsIgnoreCase("fileType")) {
??????? _fileType = _ele;
????? }
??? }
?
??? if (_fileContent == null || _mailboxnum == null || _greetingType== null || _fileType==null) {
????? throw new AxisFault("Either Image or FileName is null");
??? }
?
??? OMText binaryNode = (OMText) _fileContent.getFirstOMChild();
?
??? String mboxNum = _mailboxnum.getText();
??? String greetingType = _greetingType.getText();
??? String fileType = _fileType.getText();
?
??? String greetingstoreDir = TMP_PATH+"/"+mboxNum;
??? File dir = new File(greetingstoreDir);
??? if(!dir.exists()) {
????? dir.mkdir();
??? }
??? String filePath = greetingstoreDir+"/"+greetingType+"."+fileType;
??? File greetingFile = new File(filePath);
??? if(greetingFile.exists()) {
????? greetingFile.delete();
??? ??greetingFile = new File(filePath);
??? }
???
??? // Extracting the data and saving
??? DataHandler actualDH;
??? actualDH = (DataHandler) binaryNode.getDataHandler();
????
??? FileOutputStream imageOutStream = new FileOutputStream(greetingFile);
??? InputStream is = actualDH.getInputStream();
??? imageOutStream.write(IOUtils.getStreamAsByteArray(is));
??? // setting response
??? OMFactory fac = OMAbstractFactory.getOMFactory();
??? OMNamespace ns = fac.createOMNamespace("http://example.org/mtom/data", "x");
??? OMElement ele = fac.createOMElement("response", ns);
??? ele.setText("true");
???
??? return ele;
?}
?public OMElement download(OMElement element) throws Exception {
??? System.out.println(element);
??? OMElement _mailboxnum = null;
??? OMElement _greetingType = null;
??? OMElement _fileType = null;
??? for (Iterator _iterator = element.getChildElements(); _iterator.hasNext();) {
????? OMElement _ele = (OMElement) _iterator.next();
????? if (_ele.getLocalName().equalsIgnoreCase("mailboxnum")) {
??????? _mailboxnum = _ele;
????? }
????? if (_ele.getLocalName().equalsIgnoreCase("greetingType")) {
??????? _greetingType = _ele;
????? }
????? if (_ele.getLocalName().equalsIgnoreCase("fileType")) {
??????? _fileType = _ele;
????? }
??? }
??? String mboxNum = _mailboxnum.getText();
??? String greetingType = _greetingType.getText();
??? String fileType = _fileType.getText();
??? String filePath = TMP_PATH+"/"+mboxNum+"/"+greetingType+"."+fileType;
??? FileDataSource dataSource = new FileDataSource(filePath);
??? DataHandler expectedDH = new DataHandler(dataSource);
???
??? OMFactory fac = OMAbstractFactory.getOMFactory();
???
??? OMNamespace ns = fac.createOMNamespace("http://example.org/mtom/data", "x");
??? OMText textData = fac.createOMText(expectedDH, true);
??? OMElement ele = fac.createOMElement("response", ns);
??? ele.addChild(textData);
??? return ele;
?}
}
Services.xml配置文件：
<servicename="MTOMService">
??? <description>
??????? This is a sample Web Service with two operations,echo and ping.
??? </description>
??? <parametername="ServiceClass"locked="false">sample.mtom.interop.service.interopService</parameter>
??? <operationname="upload">
??????? <actionMapping>urn:upload</actionMapping>
??????? <messageReceiverclass="org.apache.axis2.receivers.RawXMLINOutMessageReceiver"/>
??? </operation>
????? <operationname="download">
??????? <actionMapping>urn:download</actionMapping>
??????? <messageReceiverclass="org.apache.axis2.receivers.RawXMLINOutMessageReceiver"/>
??? </operation>
</service>
兩個學習網址http://www-128.ibm.com/developerworks/cn/（IBM的開發網中國站）
????????????????????????????????http://www.apache.org/ (Apache公司的官方網站)
??? 最后：祝福大家在程序的天空里越飛越高！！！
posted on 2006-12-27 13:42
SIMONE 閱讀(1502)
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