解析响应消息体中的流

导出作业和导出连接的接口响应消息是一个流，需要转化为一个文件。可以参考下面的样例代码：

String EXPORT_JOB_URL = "https://{endpoint}/v1/{project_id}/jobs/{job_name}/export";

try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
    HttpPost httpPost = new HttpPost(EXPORT_JOB_URL);
    httpPost.setHeader("Content-Type", "application/json; charset=UTF-8");
    httpPost.setHeader("Accept", "application/octet-stream");
    httpPost.setHeader("X-Auth-Token", token);

    HttpResponse response = httpClient.execute(httpPost);
    int statusCode = response.getStatusLine().getStatusCode();
    if (statusCode == 200) {
        String filePath = "d:";
        String fileName = "job.zip";
        FileOutputStream fileOutputStream = new FileOutputStream(filePath + fileName);
        response.getEntity().writeTo(fileOutputStream);
    } else {
        System.out.println(statusCode);
    }
}