如何执行“OPTIONS” Java 11 HttpClient 中的 HTTP 方法请求

Question

我需要用 java httpClient 替换 Apache http 客户端。

我用apache客户端进行了测试，效果很好：

HttpOptions httpOptions = new HttpOptions(uploadUrl);
try (CloseableHttpResponse responseOld = httpclient.execute(httpOptions)) {
    assertEquals(200, responseOld.getStatusLine().getStatusCode());
    assertEquals("POST,OPTIONS", responseOld.getFirstHeader("Access-Control-Allow-Methods").getValue());
}

但是当我将其更改为java客户端时，它不起作用。我使用此代码：

HttpClient javaClient = HttpClient.newBuilder().sslContext(initUnsecuredSSLContext()).build();

HttpRequest get = HttpRequest.newBuilder()
                .uri(URI.create(uploadUrl))
                .method("OPTIONS", HttpRequest.BodyPublishers.noBody())
                .build();
HttpResponse<String> response = javaClient.send(get, HttpResponse.BodyHandlers.ofString());

运行 java 版本“17.0.2”时测试无法完成

。

谢谢。

Answer 1

一切都通过响应的微小改变来解决

HttpRequest get = HttpRequest.newBuilder()
                .uri(URI.create(uploadUrl))
                .method("OPTIONS", HttpRequest.BodyPublishers.noBody())
                .build();

HttpResponse<Stream<String>> response = javaClient.send(get, HttpResponse.BodyHandlers.ofLines());

assertEquals(200, response.statusCode());
assertEquals("POST,OPTIONS", response.headers().firstValue("Access-Control-Allow-Methods").orElseThrow());