发送 Asp.net HttpClient 获取结果到浏览器

Question

我有一个 asp.net mvc 控制器方法“索引”，如下所示。我想使用 HttpClient GetAsync 方法从 www.google.com 获取响应，然后将此响应作为响应发送到浏览器，因此浏览器显示 www.google.com。但我不知道如何用从 client.GetAsync 获得的响应替换响应。请帮忙！不过我不想使用重定向。

    public async Task<ActionResult> Index()
    {
        HttpClient client = new HttpClient();
        var httpMessage = await client.GetAsync("http://www.google.com");


        return ???;
    }

Answer 1

您可以使用ReadAsStringAsync() 方法将来自http 调用的响应作为字符串读取，并将该字符串作为您的操作方法的响应返回。

public async Task<ActionResult> Index()
{
    HttpClient client = new HttpClient();
    var httpMessage = await client.GetAsync("http://www.google.com");

    var r = await httpMessage.Content.ReadAsStringAsync();

    return Content(r);
}

当您访问Index 操作时，上述代码将返回google.com 的内容。

Answer 2

请尝试查看此帖子HttpClient Request like browser

response.EnsureSuccessStatusCode();
    using (var responseStream = await response.Content.ReadAsStreamAsync())
    using (var decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress))
    using (var streamReader = new StreamReader(decompressedStream))
    {
        return streamReader.ReadToEnd();
    }

我在我的机器上制作样品

这里有完整的动作

    public async Task<string> Index()
    {
        HttpClient client = new HttpClient();


        client.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "text/html,application/xhtml+xml,application/xml");
        client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate");
        client.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0");
        client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1");


        var httpMessage = await client.GetAsync("http://www.google.com");

        httpMessage.EnsureSuccessStatusCode();
        using (var responseStream = await httpMessage.Content.ReadAsStreamAsync())
        using (var decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress))
        using (var streamReader = new StreamReader(decompressedStream))
        {
            return streamReader.ReadToEnd();
        }
        // return View();
    }

example for get cookie from server