java接收文件流+response.body()调用两次问题(分别接收文件和对象)

import okhttp3.*;
import okio.Buffer;
import okio.BufferedSource;
import java.io.*;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;    
public static void main(String[] args) throws Exception {
        OkHttpClient client = new OkHttpClient().newBuilder()
                .build();
        Request request = new Request.Builder()
                .url("http://127.0.0.1:8080/test/duizhang")
                .build();
        Response response = client.newCall(request).execute();
        ResponseBody body = response.body();
        BufferedSource source = body.source();
        source.request(Long.MAX_VALUE);
        Buffer buffer = source.buffer();
        String responseBodyString = buffer.clone().readString(Charset.forName("UTF-8"));
        System.out.println(responseBodyString);
        InputStream is = body.byteStream();
        byte[] bs = new byte[1024];
        // 读取到的数据长度
        int len;
        // 输出的文件流(后缀名)
        File sf=new File("F://文件接收");
        if(!sf.exists()){
            sf.mkdirs();
        }
        // 新的图片文件名 = 编号 +"."图片扩展名
        OutputStream os = new FileOutputStream(sf.getPath()+"\\"+sf.getName());
        // 开始读取
        while ((len = is.read(bs)) != -1) {
            os.write(bs, 0, len);
        }
        // 完毕，关闭所有链接
        os.close();
        is.close();
        System.out.println("程序执行完毕");
    }

inputStream = response.body().byteStream();时报错io异常的closed错误

log.info("请求返回内容为{}",response.body().string());