使用用户名和密码发送 POST 请求并保存会话 cookie

问题描述：

在发送带有用户名和密码的 POST 请求后，如何使用 Jsoup 保存 cookie?还是必须先将它们提供给连接对象，然后再保存?

How can I save cookies with Jsoup after sending a POST request with username and password? Or must I first provide them to connection object and then save?

答

假设 HTML 表单如下所示:

Assuming that the HTML form look like below:

<form action="http://example.com/login" method="post">
    <input type="text" name="username" />
    <input type="password" name="password" />
    <input type="submit" name="login" value="Login" />
</form>

您可以发布它并获取cookies如下:

You can POST it and obtain cookies as below:

Response response = Jsoup.connect("http://example.com/login")
    .method(Method.POST)
    .data("username", username)
    .data("password", password)
    .data("login", "Login")
    .execute();
Map<String, String> cookies = response.cookies();
Document document = response.parse(); // If necessary.
// ...

您可以将 cookie 传递回后续请求，如下所示:

You can pass cookies back on subsequent requests as below:

Document document = Jsoup.connect("http://example.com/user")
    .cookies(cookies)
    .get();
// ...

或者如果您知道单个 cookie 名称:

Or if you know the individual cookie name:

Document document = Jsoup.connect("http://example.com/user")
    .cookie("SESSIONID", cookies.get("SESSIONID"))
    .get();
// ...

使用用户名和密码发送 POST 请求并保存会话 cookie

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