关于C# POST传文件流 java springmvc接收问题记载

C# 上传文件流 代码如下：

           public static string HttpUploadFile()
        {
            string url = "http://localhost:8080/prod/api/upload.json";
            string path = "D:\\img\\test.bmp";
            // 设置参数
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            CookieContainer cookieContainer = new CookieContainer();
            request.CookieContainer = cookieContainer;
            request.AllowAutoRedirect = true;
            request.Method = "POST";


            string name = Base64("administrator:e10adc3949ba59abbe56e057f20f883e");


            SetHeaderValue(request.Headers, "Authorization", "Basic " + Encoding.UTF8.GetString(Encoding.UTF8.GetBytes(name)));


            string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
            request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
            byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
            byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
            int pos = path.LastIndexOf("\\");
            string fileName = path.Substring(pos + 1);
            //请求头部信息 
            StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-           stream\r\n\r\n", fileName));
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());
            FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
            byte[] bArr = new byte[fs.Length];
            fs.Read(bArr, 0, bArr.Length);
            fs.Close();
            Stream postStream = request.GetRequestStream();
            postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
            postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
            postStream.Write(bArr, 0, bArr.Length);
            postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
            postStream.Close();
            //发送请求并获取相应回应数据
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream instream = response.GetResponseStream();
            StreamReader sr = new StreamReader(instream, Encoding.UTF8);
            //返回结果网页（html）代码
            string content = sr.ReadToEnd();
            return content;
        }

  springmvc 接收代码如下：

         @RequestMapping("/upload")
public ModelAndView upload(@RequestParam(value="file",required=true)  MultipartFile[] file){ 
try {
FileUtils.writeByteArrayToFile(new File("c:/test.jpg"), input2byte(file[0].getInputStream()));
} catch( Exception e) { 
e.printStackTrace();
}
return null;
}

public static final byte[] input2byte(InputStream inStream) throws IOException {
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
byte[] buff = new byte[100];
int rc = 0;
while ((rc = inStream.read(buff, 0, 100)) > 0) {
swapStream.write(buff, 0, rc);
}
byte[] in2b = swapStream.toByteArray();

return in2b;
}

         仅此记录，代码可直接使用