Httpclient 4.x文件上傳

[Java]代碼    

/**
 * httpclient4.x 文件上傳
 * 
 * Example how to use multipart/form encoded POST request.
 */
public class ClientMultipartFormPost {

    public static void main(String[] args) {
        String url = "http://localhost:8080/fileRequest";
        File file = new File("/home/opt/fileUpload/A.zip");
        CloseableHttpClient httpclient = HttpClients.createDefault();
        try {
            HttpPost httppost = new HttpPost(url);
            MultipartEntityBuilder builder = MultipartEntityBuilder.create();
            //others param for request
            StringBody stringFileNameBody = new StringBody("fileName", ContentType.create("text/plain", "UTF-8"));
            builder.addPart(name, stringFileNameBody);
            StringBody stringFileMd5 = new StringBody("md5", ContentType.create("text/plain", "UTF-8"));
            builder.addPart(name, stringFileMd5);

            //file param for request
            String fileRequestParam = "file";
            FileBody fileBody = new FileBody(file, ContentType.create("multipart/form-data", "UTF-8"));
            builder.addPart(fileRequestParam, fileBody);

            HttpEntity reqEntity = builder.build();
            httppost.setEntity(reqEntity);
            System.out.println("executing request " + httppost.getRequestLine());
            CloseableHttpResponse response = httpclient.execute(httppost);

            System.out.println(response.getStatusLine());
            HttpEntity resEntity = response.getEntity();
            if (resEntity != null) {
                System.out.println("Response content length: " + resEntity.getContentLength());
            }
            EntityUtils.consume(resEntity);           
        } catch(Exception e){
            e.printStackTrace();
        }finally {
           try {
                EntityUtils.consume(resEntity);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}