如何使用jsoup维护可变的Cookie和会话？ [英] how to maintain variable cookies and sessions with jsoup?

问题描述

public boolean isGood(String path)
{
    if (p != path)
    {
        good = false;
    }

    if (good)
    {
        try 
        {
            Connection connection = Jsoup.connect(path);
            Map<String, String> cookys = Jsoup.connect(path).response().cookies();

            if (cookys != cookies)
                cookies = cookys;

            for (Entry<String, String> cookie : cookies.entrySet()) 
            {
                connection.cookie(cookie.getKey(), cookie.getValue());
            }

            Doc = connection.get();
            good = true;
        }
        catch (Exception e) 
        {
            rstring = e.getMessage().toString();
            good = false;
        }
    }
    else
    {
        try
        {
            Response response = Jsoup.connect(path).execute();
            cookies = response.cookies();
            Doc = response.parse();
            good = true;
        }
        catch (Exception e) 
        {
            rstring = e.getMessage().toString();
            good = false;
        } 
    }       
    return good;
}

此方法不正确。我想知道的是一种方式，不知道什么cookie将存在，能够处理cookie更改以及维护会话。

This method is not right. What I'm trying to figure out is a way to without know what cookies will exist, be able to handle cookie changes as well as maintain sessions.

我在写一个应用程序我的简单机器论坛，并且它改变其cookie配置，当你点击一些自定义行为。

I'm writing an app for my simple machines forum, and it changes its cookie config as you click around for some custom behavior.

但如果应用程序对我的网站很好，我会发布一个版本供其他人用于其他论坛。

But if the app does well for my site, I was going to publish a version for others to use for other forums.

我知道我的方向正确，但逻辑是踢我的屁股。

I know I'm heading in the right direction, but the logic is kind of kicking my butt.

推荐答案

这段代码很混乱。流是不合逻辑的，异常处理是坏的。对象引用比较像 if（p！= path）和 if（cookys！= cookies） 。要比较对象的内容，您需要使用 equals（）方法。

This code is very confusing. The flow is illogical and the exception handling is bad. The object reference comparisons like if (p != path) and if (cookys != cookies) makes no utter sense. To compare object's contents you need to use equals() method instead.

点，我的理解，你想要维护cookie在一堆后续的Jsoup请求在同一个域。在这种情况下，您需要基本上遵守以下流程：

To the point, I understand that you want to maintain cookies in a bunch of subsequent Jsoup requests on the same domain. In that case, you need to basically adhere the following flow:

Map<String, String> cookies = new HashMap<String, String>();

// First request.
Connection connection1 = Jsoup.connect(url1);
for (Entry<String, String> cookie : cookies.entrySet()) {
    connection1.cookie(cookie.getKey(), cookie.getValue());
}
Response response1 = connection1.execute();
cookies.putAll(response1.cookies());
Document document1 = response1.parse();
// ...

// Second request.
Connection connection2 = Jsoup.connect(url2);
for (Entry<String, String> cookie : cookies.entrySet()) {
    connection2.cookie(cookie.getKey(), cookie.getValue());
}
Response response2 = connection2.execute();
cookies.putAll(response2.cookies());
Document document2 = response2.parse();
// ...

// Third request.
Connection connection3 = Jsoup.connect(url3);
for (Entry<String, String> cookie : cookies.entrySet()) {
    connection3.cookie(cookie.getKey(), cookie.getValue());
}
Response response3 = connection3.execute();
cookies.putAll(response3.cookies());
Document document3 = response3.parse();
// ...

// Etc.

这可以重构为以下方法：

This can be refactored to the following method:

private Map<String, String> cookies = new HashMap<String, String>();

public Document get(url) throws IOException {
    Connection connection = Jsoup.connect(url);
    for (Entry<String, String> cookie : cookies.entrySet()) {
        connection.cookie(cookie.getKey(), cookie.getValue());
    }
    Response response = connection.execute();
    cookies.putAll(response.cookies());
    return response.parse();
}

可用作

YourJsoupWrapper jsoupWrapper = new YourJsoupWrapper();

Document document1 = jsoupWrapper.get(url1);
// ...

Document document2 = jsoupWrapper.get(url2);
// ...

Document document3 = jsoupWrapper.get(url3);
// ...

请注意，即将到来的Jsoup 1.6.2将带有新连接＃cookies（Map）方法，应该使为循环每次都是多余的。

Note that the upcoming Jsoup 1.6.2 will come with a new Connection#cookies(Map) method which should make that for loop everytime superfluous.

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