在 C# 中通过 Playwright 运行 POST

Question

我尝试使用 playwright 将 Post 命令发送到 Rest API， 它不会等到页面重定向到 json 响应并返回 js 挑战页面（如 cloudflare）作为结果，该页面无法转换为 json 并引发异常。

private IPlaywright _playwright;
private IBrowser _browser;
private IBrowserContext _context;

public async Task InitializePlaywrightAsync()
{
    _playwright = await Playwright.CreateAsync();
    _browser = await _playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = true });
    _context = await _browser.NewContextAsync();
}

private async Task<JObject?> PostToUrlAsJObject(string url, StringContent content)
{
    try
    {
        string con = await content.ReadAsStringAsync();
        var response = await _context.APIRequest.PostAsync(url, new()
        {
             DataString = con,
            Headers = new Dictionary<string, string>
            {
                { "Content-Type", "application/json" },
                { "Accept", "application/json" },
                { "User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36" },
                { "Referer", url },
                { "Origin", new Uri(url).GetLeftPart(UriPartial.Authority) },
                { "Accept-Language", "en-US,en;q=0.9" },
                { "Accept-Encoding", "gzip, deflate, br" }
            },
        });

        string res = await response.TextAsync();
        return JObject.Parse(res);
    }
    catch (Exception ex)
    {
        Console.WriteLine($"Error during POST request:\r\nURL: {url}\r\nError: {ex.Message}\r\nStack Trace: {ex.StackTrace}");
        return null;
    }
}

还没有看到类似的 C# 问题...

Answer 1

您无需启动浏览器即可使用 c# 在 Playwright 中进行 API 测试

如

官方链接中所述您可以使用它来获取请求上下文

private IAPIRequestContext Request = null!; 然后调用API

    Request = await this.Playwright.APIRequest.NewContextAsync(new() {
        // All requests we send go to this API endpoint.
        BaseURL = "https://api.github.com",
    });
    var newIssue = await Request.PostAsync("/repos/" + USER + "/" + REPO + "/issues", new() { DataObject = data });

如果您只想测试 Post API，请删除该浏览器代码