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。 author: ZJ 07-5-7 Blog: http://zhangjunhd.blog.51cto.com/ ? 1 ．工作环境 IDE: Eclipse 3.1.2 jdk: jdk1.5.0_04 Tomcat: apache-tomcat-5.0.28 AXIS2:1.0(war 版本和bin 版本) ? 2 ．实现 ?? 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) ? 3 ．服务器端FileTransferServer.java package sample; ? 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.File; import java.io.FileOutputStream; import java.io.InputStream; ? import java.util.Iterator; ? import javax.activation.DataHandler; import javax.activation.FileDataSource; ? public class FileTransferServer { ?????? public static final String TMP_PATH = "D:/temp"; ? ?????? 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; ???????????????????? } ????????????? } ? ????????????? if (_fileContent == null || _fileType == null) { ???????????????????? throw new AxisFault("Either Image or FileName is null"); ????????????? } ? ????????????? 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); ????????????? } ? ????????????? // Extracting the data and saving ????????????? DataHandler actualDH; ????????????? actualDH = (DataHandler) binaryNode.getDataHandler(); ? ????????????? 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", ??????????????????????????? "fd"); ????????????? OMElement ele = fac.createOMElement("response", ns); ????????????? ele.setText("true"); ????????????? return ele; ?????? } ? ?????? 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; ?????? } } ? 4.services.xml ??? ??????? This is a sample Web Service with two operations,echo and ping. ??? ??? sample.FileTransferServer ??? ??????? urn:upload ??????? ??? ????? ??????? urn:download ??????? ??? ? 将这两个文件打包并部署到Tomcat 上（略）。 ? 5 ．测试 FileTransferClient.java package sample; ? import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; ? import javax.activation.DataHandler; import javax.activation.FileDataSource; ? 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.axiom.soap.SOAP11Constants; import org.apache.axis2.AxisFault; import org.apache.axis2.Constants; import org.apache.axis2.addressing.EndpointReference; import org.apache.axis2.client.Options; import org.apache.axis2.client.ServiceClient; ? 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"); ???? 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;

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