import java.io.*;
//获取上个请求的返回数据
byte[] result = prev.getResponseData();
//要下载到什么地方
String file_name = "/Users/zhenning/Desktop/test/${counter}.zip";
File file = new File(file_name);
FileOutputStream out = new FileOutputStream(file);
out.write(result);
out.close();
原文：https://www.cnblogs.com/Alexr/p/13198109.html