获取文件上传信息

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
public void test(){
               // 从接口返回信息中拿到resourceUrls
                String resourceUrl = "第一步接口返回的resourceUrls";
              // 从接口返回信息中拿到headers
                Map<String, String> headers = 第一步接口返回的headers;
                URL url = new URL(resourceUrl);
                HttpURLConnection connection = (HttpURLConnection)url.openConnection();
               if (headers != null) {
                for (Map.Entry<String, String> entry : headers.entrySet()) {
                    connection.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }
                connection.setDoOutput(true);
                connection.setRequestMethod("PUT");
                connection.setUseCaches(false);
                connection.setReadTimeout(10000);
                connection.setConnectTimeout(10000);
                connection.connect();
                OutputStream out = connection.getOutputStream();
                InputStream is = new FileInputStream(new File("/Users/xxxxx/Desktop/测试文件.xls"));
                byte[] b =new byte[1024];
                int temp;
                while ((temp=is.read(b))!=-1){
                       out.write(b,0,temp);
                }
                out.flush();
                out.close();
                int responseCode = connection.getResponseCode();
                connection.disconnect();
                if (responseCode == 200) {
                    System.out.println("上传成功");
                 } else {
                    System.out.println("上传失败");
                 }
}