使用Axis2传输附件(AXIS2 MTOM)--1

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本文介绍如何使用Axis2 传递附件。<o:p></o:p> author: ZJ <st1:chsdate w:st="on" isrocdate="False" year="2007" day="7" islunardate="False" month="5">07-5-7</st1:chsdate> Blog: http://zhangjunhd.blog.51cto.com/ <o:p> </o:p> 1 ．工作环境 IDE: Eclipse <st1:chsdate w:st="on" isrocdate="False" year="1899" day="30" islunardate="False" month="12">3.1.2</st1:chsdate> jdk: jdk<st1:chsdate w:st="on" isrocdate="False" year="1899" day="30" islunardate="False" month="12">1.5.0</st1:chsdate>_04 Tomcat: apache-tomcat-<st1:chsdate w:st="on" isrocdate="False" year="1899" day="30" islunardate="False" month="12">5.0.28</st1:chsdate> AXIS2:1.0(war 版本和 bin 版本 ) <o:p> </o:p> 2 ．实现<o:p></o:p>    在 Eclipse 新建一个动态 web 工程，在 WEB-INF\lib 下加入 axis2 所需的 jar 包。 本例的是一个系统的用户上传下载图片格式文件的例子，每次上传出携带附件外，还包括文件名 , 文件类型。此 webservice 实现的 2 个功能就是 upload, download.    AXIS2 的 webservice 发布的时候是打包成 xxx.aar 发布的， xxx.aar 展开后的目录结构为  --     --META-INF        services.xml     -- 包含 server 端实现的 class( 目录跟 package 是一样的结构 ) <o:p> </o:p> 3 ．服务器端FileTransferServer.java<o:p></o:p> package sample;<o:p></o:p> <o:p> </o:p> import org.apache.axiom.attachments.utils.IOUtils;<o:p></o:p> import org.apache.axiom.om.OMAbstractFactory;<o:p></o:p> import org.apache.axiom.om.OMElement;<o:p></o:p> import org.apache.axiom.om.OMFactory; import org.apache.axiom.om.OMNamespace;<o:p></o:p> import org.apache.axiom.om.OMText;<o:p></o:p> import org.apache.axis2.AxisFault;<o:p></o:p> <o:p> </o:p> import java.io.File;<o:p></o:p> import java.io.FileOutputStream; import java.io.InputStream; <o:p> </o:p> import java.util.Iterator; <o:p> </o:p> import javax.activation.DataHandler; import javax.activation.FileDataSource; <o:p> </o:p> public class FileTransferServer {        public static final String TMP_PATH = "D:/temp"; <o:p> </o:p>        public OMElement upload(OMElement element) throws Exception {               OMElement _fileContent = null;// 文件内容               OMElement _fileName = null;// 文件名               OMElement _fileType = null;// 文件类型               System.out.println("The element for upload: " + element);               for (Iterator _iterator = element.getChildElements(); _iterator                             .hasNext();) {                      OMElement _ele = (OMElement) _iterator.next();                      if (_ele.getLocalName().equalsIgnoreCase("fileContent")) {                             _fileContent = _ele;                      }                      if (_ele.getLocalName().equalsIgnoreCase("fileName")) {                             _fileName = _ele;                      }                      if (_ele.getLocalName().equalsIgnoreCase("fileType")) {                             _fileType = _ele;                      }               } <o:p> </o:p>               if (_fileContent == null || _fileType == null) {                      throw new AxisFault("Either Image or FileName is null");               } <o:p> </o:p>               OMText binaryNode = (OMText) _fileContent.getFirstOMChild();               String fileName = _fileName.getText();               String fileType = _fileType.getText();               String storeDir = TMP_PATH + "/" + "tempTest";               File dir = new File(storeDir);               if (!dir.exists()) {                      dir.mkdir();               }               String filePath = storeDir + "/" + fileName + "." + fileType;               File uploadFile = new File(filePath);               if (uploadFile.exists()) {                      filePath = storeDir + "/" + fileName + "(1)" + "." + fileType;                      uploadFile = new File(filePath);               } <o:p> </o:p>               // Extracting the data and saving               DataHandler actualDH;               actualDH = (DataHandler) binaryNode.getDataHandler(); <o:p> </o:p>               FileOutputStream imageOutStream = new FileOutputStream(uploadFile);               InputStream is = actualDH.getInputStream();               imageOutStream.write(IOUtils.getStreamAsByteArray(is));               // setting response               OMFactory fac = OMAbstractFactory.getOMFactory();               OMNamespace ns = fac.createOMNamespace("http://example.org/filedata",<o:p></o:p>                             "fd");               OMElement ele = fac.createOMElement("response", ns);               ele.setText("true");               return ele;        } <o:p> </o:p>        public OMElement download(OMElement element) throws Exception {               System.out.println("The element for download: " + element);               OMElement _userName = null;               OMElement _fileName = null;               OMElement _fileType = null;               for (Iterator _iterator = element.getChildElements(); _iterator                             .hasNext();) {                      OMElement _ele = (OMElement) _iterator.next();                      if (_ele.getLocalName().equalsIgnoreCase("userName")) {                             _userName = _ele;                      }                      if (_ele.getLocalName().equalsIgnoreCase("fileName")) {                             _fileName = _ele;                      }                      if (_ele.getLocalName().equalsIgnoreCase("fileType")) {                             _fileType = _ele;                      }               }               String userName = _userName.getText();               String fileName = _fileName.getText();               String fileType = _fileType.getText();               String filePath = TMP_PATH + "/" + userName + "/" + fileName + "."                             + fileType;               System.out.println("The filePath for download: " + filePath);               FileDataSource dataSource = new FileDataSource(filePath);               DataHandler expectedDH = new DataHandler(dataSource);               OMFactory fac = OMAbstractFactory.getOMFactory();               OMNamespace ns = fac.createOMNamespace("http://example.org/filedata",                             "fd");               OMText textData = fac.createOMText(expectedDH, true);               OMElement ele = fac.createOMElement("response", ns);               ele.addChild(textData);               return ele;        } } <o:p> </o:p> 4.services.xml<o:p></o:p> <!----> <service name="FileOperation"></service>     <description></description>         This is a sample Web Service with two operations,echo and ping.         <parameter name="ServiceClass" locked="false"></parameter> sample.FileTransferServer     <operation name="upload"></operation>         <actionmapping></actionmapping>urn:upload         <messagereceiver class="org.apache.axis2.receivers.RawXMLINOutMessageReceiver"></messagereceiver>           <operation name="download"></operation>         <actionmapping></actionmapping>urn:download         <messagereceiver class="org.apache.axis2.receivers.RawXMLINOutMessageReceiver"></messagereceiver>     <o:p> </o:p> 将这两个文件打包并部署到 Tomcat 上（略）。 <o:p> </o:p> 5 ．测试<o:p></o:p> FileTransferClient.java<o:p></o:p> package sample; <o:p> </o:p> import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; <o:p> </o:p> import javax.activation.DataHandler; import javax.activation.FileDataSource; <o:p> </o:p> 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;<o:p></o:p> import org.apache.axiom.om.OMText;<o:p></o:p> import org.apache.axiom.soap.SOAP11Constants;<o:p></o:p> import org.apache.axis2.AxisFault;<o:p></o:p> import org.apache.axis2.Constants;<o:p></o:p> import org.apache.axis2.addressing.EndpointReference;<o:p></o:p> import org.apache.axis2.client.Options;<o:p></o:p> import org.apache.axis2.client.ServiceClient;<o:p></o:p>  <o:p></o:p> public class FileTransferClient {    private static EndpointReference targetEPR =  new EndpointReference("http://127.0.0.1:8080/axis2/services/FileOperation");       public static boolean upload(String fileName, File file, String fileType) {      try {       OMElement data = buildUploadEnvelope(fileName, file, fileType);       Options options = buildOptions();       ServiceClient sender = new ServiceClient();       sender.setOptions(options);       System.out.println("The data in method upload: "+data);       OMElement ome = sender.sendReceive(data);       System.out.println("Convert the data to element in method upload: "+ome);       String b = ome.getText();       return Boolean.parseBoolean(b);      }      catch(Exception e) {        e.printStackTrace();      }      return false;    }       public static boolean download(String userName, String fileName, String fileType) {      try {        OMElement data = buildDownloadEnvelope(userName, fileName, fileType);        Options options = buildOptions();        ServiceClient sender = new ServiceClient();        sender.setOptions(options);        System.out.println("The data in method download: "+data);        OMElement ome = sender.sendReceive(data);        System.out.println("Convert the data to element in method download: "+ome);        OMText binaryNode = (OMText) ome.getFirstOMChild();        binaryNode.setOptimize(true); // 必须加此句，否则会出现 ContentID is null 的异常 !        DataHandler actualDH = (DataHandler) binaryNode.getDataHandler();        FileOutputStream imageOutStream = new FileOutputStream("D:/userTemp/xx.gif");        InputStream is = actualDH.getInputStream();        imageOutStream.write(IOUtils.getStreamAsByteArray(is));        return true;       }       catch(Exception e) {         e.printStackTrace();       }      return false;    }       private static OMElement buildUploadEnvelope(String fileName, File file, String fileType) {      DataHandler expectedDH;      OMFactory fac = OMAbstractFactory.getOMFactory();      OMNamespace omNs = fac.createOMNamespace("http://example.org/filedata", "fd");<o:p></o:p>      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 _fileName = fac.createOMElement("fileName", omNs);      _fileName.setText(fileName);      OMElement _fileType = fac.createOMElement("fileType", omNs);      _fileType.setText(fileType);      data.addChild(_fileName);      data.addChild(_fileType);      data.addChild(fileContent);      return data;