(转载)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/

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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)

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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)

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3．服务器端FileTransferServer.java

package sample;

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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;

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import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

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import java.util.Iterator;

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import javax.activation.DataHandler;

import javax.activation.FileDataSource;

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public class FileTransferServer {

?????? public static final String TMP_PATH = "D:/temp";

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?????? 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;

???????????????????? }

????????????? }

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????????????? if (_fileContent == null || _fileType == null) {

???????????????????? throw new AxisFault("Either Image or FileName is null");

????????????? }

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????????????? 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);

????????????? }

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????????????? // Extracting the data and saving

????????????? DataHandler actualDH;

????????????? actualDH = (DataHandler) binaryNode.getDataHandler();

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????????????? 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;

?????? }

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?????? 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;

?????? }

}

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4.services.xml

???

??????? This is a sample Web Service with two operations,echo and ping.

???

??? sample.FileTransferServer

???

??????? urn:upload

???????

???

?????

??????? urn:download

???????

???

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将这两个文件打包并部署到Tomcat上（略）。

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5．测试

FileTransferClient.java

package sample;

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import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

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import javax.activation.DataHandler;

import javax.activation.FileDataSource;

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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;

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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;

礼物 2008-07-10 16:54 发表评论