本文链接:http://blog.csdn.net/kongxx/article/details/7540930
Apache CXF实战之一 Hello World Web Service
Apache CXF实战之四 构建RESTful Web Service
Apache CXF实战之五 压缩Web Service数据
Apache CXF实战之六 创建安全的Web Service
首先声明我知道有个协议叫ftp,也知道有种编程叫sock编程,但我就是碰到了server对外只开放80端口,并且还需要提供文件上传和下载功能的应用,那好吧,开始干活。
1. 首先是一个封装了服务器端文件路径,客户端文件路径和要传输的字节数组的MyFile类。
- package com.googlecode.garbagecan.cxfstudy.filetransfer;
- public class MyFile {
- private String clientFile;
- private String serverFile;
- private long position;
- private byte[] bytes;
- public String getClientFile() {
- return clientFile;
- }
- public void setClientFile(String clientFile) {
- this.clientFile = clientFile;
- }
- public String getServerFile() {
- return serverFile;
- }
- public void setServerFile(String serverFile) {
- this.serverFile = serverFile;
- }
- public long getPosition() {
- return position;
- }
- public void setPosition(long position) {
- this.position = position;
- }
- public byte[] getBytes() {
- return bytes;
- }
- public void setBytes(byte[] bytes) {
- this.bytes = bytes;
- }
- }
2. 文件传输的Web Service接口
- package com.googlecode.garbagecan.cxfstudy.filetransfer;
- import javax.jws.WebMethod;
- import javax.jws.WebService;
- @WebService
- public interface FileTransferService {
- @WebMethod
- void uploadFile(MyFile myFile) throws FileTransferException;
- @WebMethod
- MyFile downloadFile(MyFile myFile) throws FileTransferException;
- }
3. 文件传输的Web Service接口实现类,主要是一些流的操作
- package com.googlecode.garbagecan.cxfstudy.filetransfer;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.OutputStream;
- import java.util.Arrays;
- import org.apache.commons.io.FileUtils;
- import org.apache.commons.io.IOUtils;
- public class FileTransferServiceImpl implements FileTransferService {
- public void uploadFile(MyFile myFile) throws FileTransferException {
- OutputStream os = null;
- try {
- if (myFile.getPosition() != 0) {
- os = FileUtils.openOutputStream(new File(myFile.getServerFile()), true);
- } else {
- os = FileUtils.openOutputStream(new File(myFile.getServerFile()), false);
- }
- os.write(myFile.getBytes());
- } catch(IOException e) {
- throw new FileTransferException(e.getMessage(), e);
- } finally {
- IOUtils.closeQuietly(os);
- }
- }
- public MyFile downloadFile(MyFile myFile) throws FileTransferException {
- InputStream is = null;
- try {
- is = new FileInputStream(myFile.getServerFile());
- is.skip(myFile.getPosition());
- byte[] bytes = new byte[1024 * 1024];
- int size = is.read(bytes);
- if (size > 0) {
- byte[] fixedBytes = Arrays.copyOfRange(bytes, 0, size);
- myFile.setBytes(fixedBytes);
- } else {
- myFile.setBytes(new byte[0]);
- }
- } catch(IOException e) {
- throw new FileTransferException(e.getMessage(), e);
- } finally {
- IOUtils.closeQuietly(is);
- }
- return myFile;
- }
- }
4. 一个简单的文件传输异常类
- package com.googlecode.garbagecan.cxfstudy.filetransfer;
- public class FileTransferException extends Exception {
- private static final long serialVersionUID = 1L;
- public FileTransferException() {
- super();
- }
- public FileTransferException(String message, Throwable cause) {
- super(message, cause);
- }
- public FileTransferException(String message) {
- super(message);
- }
- public FileTransferException(Throwable cause) {
- super(cause);
- }
- }
5. 下面是Server类用来发布web service
- package com.googlecode.garbagecan.cxfstudy.filetransfer;
- import javax.xml.ws.Endpoint;
- public class FileTransferServer {
- public static void main(String[] args) throws Exception {
- Endpoint.publish("http://localhost:9000/ws/jaxws/fileTransferService", new FileTransferServiceImpl());
- }
- }
6. 最后是Client类,用来发送文件上传和下载请求。
- package com.googlecode.garbagecan.cxfstudy.filetransfer;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.OutputStream;
- import java.util.Arrays;
- import org.apache.commons.io.FileUtils;
- import org.apache.commons.io.IOUtils;
- import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;
- public class FileTransferClient {
- private static final String address = "http://localhost:9000/ws/jaxws/fileTransferService";
- private static final String clientFile = "/home/fkong/temp/client/test.zip";
- private static final String serverFile = "/home/fkong/temp/server/test.zip";
- public static void main(String[] args) throws Exception {
- long start = System.currentTimeMillis();
- // uploadFile();
- // downloadFile();
- long stop = System.currentTimeMillis();
- System.out.println("Time: " + (stop - start));
- }
- private static void uploadFile() throws FileTransferException {
- InputStream is = null;
- try {
- MyFile myFile = new MyFile();
- is = new FileInputStream(clientFile);
- byte[] bytes = new byte[1024 * 1024];
- while (true) {
- int size = is.read(bytes);
- if (size <= 0) {
- break;
- }
- byte[] fixedBytes = Arrays.copyOfRange(bytes, 0, size);
- myFile.setClientFile(clientFile);
- myFile.setServerFile(serverFile);
- myFile.setBytes(fixedBytes);
- uploadFile(myFile);
- myFile.setPosition(myFile.getPosition() + fixedBytes.length);
- }
- } catch(IOException e) {
- throw new FileTransferException(e.getMessage(), e);
- } finally {
- IOUtils.closeQuietly(is);
- }
- }
- private static void uploadFile(MyFile myFile) throws FileTransferException {
- JaxWsProxyFactoryBean factoryBean = new JaxWsProxyFactoryBean();
- factoryBean.setAddress(address);
- factoryBean.setServiceClass(FileTransferService.class);
- Object obj = factoryBean.create();
- FileTransferService service = (FileTransferService) obj;
- service.uploadFile(myFile);
- }
- private static void downloadFile() throws FileTransferException {
- MyFile myFile = new MyFile();
- myFile.setServerFile(serverFile);
- long position = 0;
- while (true) {
- myFile.setPosition(position);
- myFile = downloadFile(myFile);
- if (myFile.getBytes().length <= 0) {
- break;
- }
- OutputStream os = null;
- try {
- if (position != 0) {
- os = FileUtils.openOutputStream(new File(clientFile), true);
- } else {
- os = FileUtils.openOutputStream(new File(clientFile), false);
- }
- os.write(myFile.getBytes());
- } catch(IOException e) {
- throw new FileTransferException(e.getMessage(), e);
- } finally {
- IOUtils.closeQuietly(os);
- }
- position += myFile.getBytes().length;
- }
- }
- private static MyFile downloadFile(MyFile myFile) throws FileTransferException {
- JaxWsProxyFactoryBean factoryBean = new JaxWsProxyFactoryBean();
- factoryBean.setAddress(address);
- factoryBean.setServiceClass(FileTransferService.class);
- Object obj = factoryBean.create();
- FileTransferService service = (FileTransferService) obj;
- return service.downloadFile(myFile);
- }
- }
首先需要准备一个大一点的文件,然后修改代码中的clientFile和serverFile路径,然后分别打开uploadFile和downloadFile注释,运行程序,检查目标文件查看结果。这个程序还是比较简单的,但基本生完成了文件上传下载功能,如果需要,也可以对这个程序再做点修改使其支持断点续传。