java - 如何在 Unirest 中接收响应体作为 InputStream？

Question

考虑以下示例:

import java.io.InputStream;
import kong.unirest.GetRequest;
import kong.unirest.HttpResponse;

class Download {
    private long byteCounter;
    private long contentLength;

    InputStream download(GetRequest request) {
        // no appropriate method here? --v
        HttpResponse response = request.??? 

        // get length to display some progress bar later ...
        // (not shown here)
        long contentLength = contentLengthHeader != null
          ? Long.valueOf(contentLengthHeader)
          : Long.valueOf(0);

        InputStream responseInputStream = response.getBody();
        return responseInputStream;
    }
}

在标记为 ??? 的位置，我不知道要调用哪个方法才能将响应主体作为 InputStream 接收。

request.asObject(InputStream.class) 之类的方法不起作用，因为此方法使用对象映射器将响应编码到 Java 类中(当然没有用于InputStream).

Answer 1

您可以像这样获取原始响应输入流:

HttpResponse<InputStream> response = request.asObject(raw -> raw.getContent());
InputStream responseInputStream = response.getBody();

如果你要求输入流在lambda执行完后不立即关闭，那么你需要使用async方法:

CompletableFuture<HttpResponse<InputStream>> responseFuture = request.asObjectAsync(raw -> raw.getContent());
HttpResponse<InputStream> response = responseFuture.get();
InputStream responseInputStream = response.getBody();