图片上传返回上传链接

@Value(("#{prop.uploadHost}"))
private String uploadHost;
@RequestMapping(value = "/insertImgUrl")
public ResultData insertImgUrl(HttpServletRequest request, HttpServletResponse response)
{
    response.setContentType("application/json");
    String rootPath = request.getSession().getServletContext().getRealPath("/");
    MultipartHttpServletRequest Murequest =(MultipartHttpServletRequest)request;
    Map<String, MultipartFile> files = Murequest.getFileMap();//得到文件map对象
    // 实例化一个jersey
 Client client = new Client();

    for(MultipartFile pic: files.values()){
        String originalFilename = pic.getOriginalFilename();  //原来的文件名
        //String uploadInfo = Upload.upload(client, pic, request, response, uploadHost, ueditor);
 String[] txt1 = originalFilename.split("\\.");
        String txt = txt1[txt1.length - 1];
        if (StringUtils.isBlank(originalFilename)) {
            continue;
        }
        File tempFile = new File(ueditor, originalFilename);
        Long ss = System.currentTimeMillis();
        File newfile = new File(tempFile.getParent() + File.separator + ss + "." + txt);
        tempFile.renameTo(newfile);
        if (tempFile.exists()) {
            //newfile = new File(tempFile.getParent() + File.separator + ss+"."+txt);
 tempFile.renameTo(newfile);
        }
        if (!newfile.exists()) {
            newfile.getParentFile().mkdirs();
            try {
                newfile.createNewFile();
                pic.transferTo(newfile);
                //ImageUtil imageUtil = new ImageUtil();
 Integer isUpload=0;
                SftpUtil sftpUtil=new SftpUtil();
                isUpload=sftpUtil.LunboUpload(ss + "." + txt, ss);
                if(isUpload==0)
                {
                    return ResultData.returnResultData(ResultData.DATA_FALSE,"上传失败");
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        String uploadInfo=uploadHost+ss+"."+txt;
        if(!"".equals(uploadInfo))
        {
            return ResultData.returnResultData(ResultData.RESULT_SUCCESS,"ok",uploadInfo);
        }
        else
 {
            return ResultData.returnResultData(ResultData.DATA_FALSE,"false","上传失败");
        }
    }
    return ResultData.returnResultData(ResultData.DATA_FALSE,"false","上传失败");
}

public  synchronized Integer  LunboUpload(String fileName,Long s)
{
    ChannelSftp sftp=null;
    try {
    SftpUtil sf = new SftpUtil();
    String host = ip;
    int port = 22;
    String username = root;
    String password = Password;
    //String directory = "/data/sftp/mysftp/lunbo/";
    //String uploadFile = "/home/ftp/img/"+fileName;
 String uploadFile = "G:/ceshi/image/"+fileName;
    sftp=sf.connect(host, port, username, password);
    sf.upload(directory, uploadFile, sftp);
    sftp.getSession().disconnect();
    sftp.quit();
    sftp.disconnect();//关闭
    //sf.download(directory, downloadFile, saveFile, sftp);
    //sf.delete(directory, deleteFile, sftp);
 	return 1;
    } catch (Exception e) {
        //sftp.getSession().disconnect();
 sftp.quit();
        sftp.disconnect();//关闭
 return 0;
    }
}
要注意图片服务器使用ftp传输，同时要注意关闭ftp链接，保证最终的图片正常传输，
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="defaultEncoding" value="UTF-8"/>
</bean>