java cxf文件上传下载,Apache CXF文件的上传与下载

CXF的文件传输通过MTOM实现。MTOM(SOAP Message Transmission Optimization Mechanism)SOAP消息传输优化机制，可以在SOAP消息中发送二进制数据。MTOM允许将消息中包含的大型数据元素外部化，并将其作为无任何特殊编码的二进制数据随消息一起传送。相对于把二进制转为base64进行传输，MTOM具有更高的传输效率。

文件传输包装类

CXF文件传输DataHandler只有二进制数据，没有文件名、文件类型和文件大小等，需要额外的传输参数。通常自定义文件传输包装类来传输二进制和额外参数。

package com.rvho.cxfserver;

import javax.activation.DataHandler;

import javax.xml.bind.annotation.XmlMimeType;

import javax.xml.bind.annotation.XmlType;

/**

* CXF上传和下载文件对象包装类 由于CXF的DataHandler无法获取文件名和文件类型，需要在上传和下载时附带文件名

*

* @author accountwcx@qq.com

*/

@XmlType(name = "CxfFileWrapper")

public class CxfFileWrapper {

//文件名

private String fileName;

//文件扩展名

private String fileExtension;

//文件二进制数据

private DataHandler file;

public String getFileName() {

return fileName;

}

public void setFileName(String fileName) {

this.fileName = fileName;

}

public String getFileExtension() {

return fileExtension;

}

public void setFileExtension(String fileExtension) {

this.fileExtension = fileExtension;

}

//注解该字段为二进制流

@XmlMimeType("application/octet-stream")

public DataHandler getFile() {

return file;

}

public void setFile(DataHandler file) {

this.file = file;

}

}

文件传输服务接口

package com.rvho.cxfserver.ws.impl;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.OutputStream;

import javax.activation.DataHandler;

import javax.activation.DataSource;

import javax.activation.FileDataSource;

import javax.jws.WebService;

import org.springframework.stereotype.Service;

import com.rvho.cxfserver.CxfFileWrapper;

import com.rvho.cxfserver.ws.FileWS;

@WebService(endpointInterface = "com.rvho.cxfserver.ws.FileWS", portName = "FileWSPort", serviceName = "FileWSService", targetNamespace = "http://www.tmp.com/services/file")

@Service("fileWS")

public class FileWSImpl implements FileWS {

@Override

public boolean upload(CxfFileWrapper file){

boolean result = true;

OutputStream os = null;

InputStream is = null;

BufferedOutputStream bos = null;

try {

is = file.getFile().getInputStream();

// 文件在服务器上的保存位置

File dest = new File("d:\\dev\\tmp\\upload\\" + file.getFileName());

os = new FileOutputStream(dest);

bos = new BufferedOutputStream(os);

byte[] buffer = new byte[1024];

int len = 0;

while ((len = is.read(buffer)) != -1) {

bos.write(buffer, 0, len);

}

bos.flush();

} catch (Exception e) {

e.printStackTrace();

result = false;

} finally {

if(bos != null){

try{

bos.close();

}catch(Exception e){

}

}

if(os != null){

try{

os.close();

}catch(Exception e){

}

}

if(is != null){

try{

is.close();

}catch(Exception e){

}

}

}

return result;

}

@Override

public CxfFileWrapper download() {

//下载文件的路径

//String filePath = "D:\\dev\\tmp\\upload\\行政区.txt";

String filePath = "E:\\TDDOWNLOAD\\Xme_5.0.517.exe";

CxfFileWrapper fileWrapper = new CxfFileWrapper();

fileWrapper.setFileName("Xme_5.0.517.exe");

fileWrapper.setFileExtension("exe");

DataSource source = new FileDataSource(new File(filePath));

fileWrapper.setFile(new DataHandler(source));

return fileWrapper;

}

}

参考：