Apache CXF实战之七：使用Web Service传输文件

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。

packagecom.googlecode.garbagecan.cxfstudy.filetransfer;


 publicclassMyFile{

 privateStringclientFile;

 privateStringserverFile;

 privatelongposition;

 privatebyte[]bytes;

 publicStringgetClientFile(){
 returnclientFile;
}

 publicvoidsetClientFile(StringclientFile){
 this.clientFile=clientFile;
}

 publicStringgetServerFile(){
 returnserverFile;
}

 publicvoidsetServerFile(StringserverFile){
 this.serverFile=serverFile;
}

 publiclonggetPosition(){
 returnposition;
}

 publicvoidsetPosition(longposition){
 this.position=position;
}

 publicbyte[]getBytes(){
 returnbytes;
}

 publicvoidsetBytes(byte[]bytes){
 this.bytes=bytes;
}
}

2. 文件传输的Web Service接口

packagecom.googlecode.garbagecan.cxfstudy.filetransfer;

 importjavax.jws.WebMethod;
 importjavax.jws.WebService;

 @WebService
 publicinterfaceFileTransferService{

 @WebMethod
 voiduploadFile(MyFilemyFile)throwsFileTransferException;

 @WebMethod
 MyFiledownloadFile(MyFilemyFile)throwsFileTransferException;
}

3. 文件传输的Web Service接口实现类，主要是一些流的操作

packagecom.googlecode.garbagecan.cxfstudy.filetransfer;

 importjava.io.File;
 importjava.io.FileInputStream;
 importjava.io.IOException;
 importjava.io.InputStream;
 importjava.io.OutputStream;
 importjava.util.Arrays;

 importorg.apache.commons.io.FileUtils;
 importorg.apache.commons.io.IOUtils;

 publicclassFileTransferServiceImplimplementsFileTransferService{

 publicvoiduploadFile(MyFilemyFile)throwsFileTransferException{
 OutputStreamos=null;

 try{
 if(myFile.getPosition()!=0){
 os=FileUtils.openOutputStream(newFile(myFile.getServerFile()),true);
 }else{
 os=FileUtils.openOutputStream(newFile(myFile.getServerFile()),false);
}
os.write(myFile.getBytes());
 }catch(IOExceptione){
 thrownewFileTransferException(e.getMessage(),e);
 }finally{
IOUtils.closeQuietly(os);
}
}

 publicMyFiledownloadFile(MyFilemyFile)throwsFileTransferException{
 InputStreamis=null;

 try{
 is=newFileInputStream(myFile.getServerFile());
is.skip(myFile.getPosition());
 byte[]bytes=newbyte[1024*1024];
 intsize=is.read(bytes);
 if(size>0){
 byte[]fixedBytes=Arrays.copyOfRange(bytes,0,size);
myFile.setBytes(fixedBytes);
 }else{
 myFile.setBytes(newbyte[0]);
}
 }catch(IOExceptione){
 thrownewFileTransferException(e.getMessage(),e);
 }finally{
IOUtils.closeQuietly(is);
}
 returnmyFile;
}
}

4. 一个简单的文件传输异常类

packagecom.googlecode.garbagecan.cxfstudy.filetransfer;

 publicclassFileTransferExceptionextendsException{

 privatestaticfinallongserialVersionUID=1L;

 publicFileTransferException(){
 super();
}

 publicFileTransferException(Stringmessage,Throwablecause){
 super(message,cause);
}

 publicFileTransferException(Stringmessage){
 super(message);
}

 publicFileTransferException(Throwablecause){
 super(cause);
}
}

5. 下面是Server类用来发布web service

packagecom.googlecode.garbagecan.cxfstudy.filetransfer;

 importjavax.xml.ws.Endpoint;

 publicclassFileTransferServer{

 publicstaticvoidmain(String[]args)throwsException{
 Endpoint.publish("http://localhost:9000/ws/jaxws/fileTransferService",newFileTransferServiceImpl());
}
}

6. 最后是Client类，用来发送文件上传和下载请求。

packagecom.googlecode.garbagecan.cxfstudy.filetransfer;

importjava.io.File;
importjava.io.FileInputStream;
importjava.io.IOException;
importjava.io.InputStream;
importjava.io.OutputStream;
importjava.util.Arrays;

importorg.apache.commons.io.FileUtils;
importorg.apache.commons.io.IOUtils;
importorg.apache.cxf.jaxws.JaxWsProxyFactoryBean;

publicclassFileTransferClient{

 privatestaticfinalStringaddress="http://localhost:9000/ws/jaxws/fileTransferService";

 privatestaticfinalStringclientFile="/home/fkong/temp/client/test.zip";
 privatestaticfinalStringserverFile="/home/fkong/temp/server/test.zip";

publicstaticvoidmain(String[]args)throwsException{
 longstart=System.currentTimeMillis();
//uploadFile();
//downloadFile();
 longstop=System.currentTimeMillis();
System.out.println("Time:"+(stop-start));
}

privatestaticvoiduploadFile()throwsFileTransferException{
 InputStreamis=null;
try{
 MyFilemyFile=newMyFile();
 is=newFileInputStream(clientFile);
 byte[]bytes=newbyte[1024*1024];
while(true){
 intsize=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(IOExceptione){
thrownewFileTransferException(e.getMessage(),e);
}finally{
IOUtils.closeQuietly(is);
}
}

privatestaticvoiduploadFile(MyFilemyFile)throwsFileTransferException{
 JaxWsProxyFactoryBeanfactoryBean=newJaxWsProxyFactoryBean();
factoryBean.setAddress(address);
factoryBean.setServiceClass(FileTransferService.class);
 Objectobj=factoryBean.create();

 FileTransferServiceservice=(FileTransferService)obj;
service.uploadFile(myFile);
}

privatestaticvoiddownloadFile()throwsFileTransferException{
 MyFilemyFile=newMyFile();
myFile.setServerFile(serverFile);
 longposition=0;
while(true){
myFile.setPosition(position);
 myFile=downloadFile(myFile);
 if(myFile.getBytes().length<=0){
break;
}

 OutputStreamos=null;
try{
if(position!=0){
 os=FileUtils.openOutputStream(newFile(clientFile),true);
}else{
 os=FileUtils.openOutputStream(newFile(clientFile),false);
}
os.write(myFile.getBytes());
}catch(IOExceptione){
thrownewFileTransferException(e.getMessage(),e);
}finally{
IOUtils.closeQuietly(os);
}

position+=myFile.getBytes().length;
}
}

privatestaticMyFiledownloadFile(MyFilemyFile)throwsFileTransferException{
 JaxWsProxyFactoryBeanfactoryBean=newJaxWsProxyFactoryBean();
factoryBean.setAddress(address);
factoryBean.setServiceClass(FileTransferService.class);
 Objectobj=factoryBean.create();

 FileTransferServiceservice=(FileTransferService)obj;
returnservice.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。

原文链接：http://blog.csdn.net/kongxx/article/details/7540930

【系列文章】

1. Apache CXF实战之六：创建安全的Web Service
2. Apache CXF实战之五:压缩Web Service数据
3. Apache CXF实战之四:构建RESTful Web Service
4. Apache CXF实战之三:传输Java对象
5. Apache CXF实战之二:集成Sping与Web容器
6. Apache CXF实战之一:Hello World Web Service