使用ftp上传文件代码解析

@RequestMapping(value = "/fileUpload")
public void upload(HttpServletRequest request, HttpServletResponse respones) {

// 解析器解析request的上下文
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(
request.getSession().getServletContext());

String path = "";

// 先判断request中是否包涵multipart类型的数据，
if (multipartResolver.isMultipart(request)) {
// 再将request中的数据转化成multipart类型的数据
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
Iterator iter = multiRequest.getFileNames();
while (iter.hasNext()) {
// 这里的name为fileItem的alias属性值，相当于form表单中name
String name = (String) iter.next();
System.out.println("name:" + name);
// 根据name值拿取文件
MultipartFile file = multiRequest.getFile(name);
if (file != null) {
String fileName = file.getOriginalFilename();
path = UploadServer.getUploadPathInputSteam(file, "app_store");

}
}
}
try {

// 指定允许其他域名访问
respones.setHeader("Access-Control-Allow-Origin", "*");
// 响应类型
respones.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
// 响应头设置
respones.setHeader("Access-Control-Allow-Headers", "Content-Type, x-requested-with, X-Custom-Header");
respones.getWriter().write(path);
} catch (IOException e) {
e.printStackTrace();
}
}

public static String getUploadPathInputSteam(MultipartFile multipartFile,String projectName){
boolean falg=true;
String reStr="";
String webpath = "marketdatas/";
try {
String path = "/marketdatas";

String fileName = multipartFile.getOriginalFilename();

String extName = getFileExtName(fileName);

fileName =  PinYinUtil.getPinYin(fileName, 1);

if("png".equals(extName))
{

path = path+"/images/";
}else if("apk".equals(extName))
{
path = path+"/apk";
}else
{
path = path+"/others";
}

webpath = webpath + fileName;
String uploadPath = path + "/" + fileName;

FTPUload ftpUload=new FTPUload();
falg=ftpUload.ftpUpload(multipartFile.getInputStream(),uploadPath);
if(falg==false){
reStr=GlobalVars.WEBPATH+"/error.jpg";
}else{
if(projectName==null||projectName.equals("")||projectName.equals("/")){
reStr = uploadPath;
}else{
reStr =uploadPath;
}
reStr= GlobalVars.WEBPATH+reStr;
}
Thread.sleep(2000);
} catch (Exception e) {
reStr=GlobalVars.WEBPATH+"/error.jpg";
e.printStackTrace();
}

return reStr;
}