java模拟post请求上传文件到另一远程接口(content-type:multipart/form-data)

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在开发过程中，我需要调用另一文件上传接口，该接口要求是post提交，content-type:multipart/form-data,因此首先将文件写入本地存储路径，并将该文件按照post传输，代码如下，亲测成功：

public static String sendPostWithFile(File lrcFile, String urlStr) throws Exception{

       String BOUNDARY = java.util.UUID.randomUUID().toString();
       MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE, "--------------------"+BOUNDARY, Charset.defaultCharset());
       multipartEntity.addPart("lyricsUpload", new FileBody(lrcFile));    //lyricsUpload文件名
       HttpPost request = new HttpPost(urlStr);    //远程接口
       request.setEntity(multipartEntity);
       request.addHeader("Content-Type", "multipart/form-data; boundary=--------------------"+BOUNDARY);

       DefaultHttpClient httpClient = new DefaultHttpClient();
       HttpResponse response = httpClient.execute(request);
       InputStream is = response.getEntity().getContent();
       BufferedReader in = new BufferedReader(new InputStreamReader(is));
       StringBuffer buffer = new StringBuffer();
       String line = "";
       while ((line = in.readLine()) != null) {
           buffer.append(line);
       }
       System.out.println("发送消息收到的返回："+buffer.toString());
       return buffer.toString();
}