使用jsoup登录网站 [英] Login on website using jsoup

问题描述

在此网站上，您可以输入学生证号码，然后显示多少钱留在那张卡上.我想使用JSOUP获得信息.这是我当前的代码，但是不起作用，

On this website, you can enter your student-card-number, and then it will display how much money is left on that card. I want to obtain the information using JSOUP. This is my current code, but it does not work,

        String url = "http://kortladdning3.chalmerskonferens.se/CardLoad_Order.aspx";



        Connection.Response loginForm = Jsoup.connect(url)
                .method(Connection.Method.GET)
                .execute();

        Document document = Jsoup.connect(url)
                .userAgent("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.157 Safari/537.36")               
                 //.data("__VIEWSTATE","%2FwEPDwUHNjA4NDA1NQ9kFgQCAw9kFgoCAQ9kFgICAQ8PFgIeBFRleHQFClBUTSBLb3J0bnJkZAICDxYCHgdWaXNpYmxlaGQCAw8WAh8BaGQCBA8WAh8BaGQCBQ8WAh8BaBYCAgEPEGRkFgBkAgUPDxYCHwAFCShkZXNrdG9wKWRkZGzBhwMIv3yxqKnC0C7%2BPlC0PlDG")
                .data("__EVENTVALIDATION", "%2FwEWBAKG7bXPBQLi0uqnCgKF69rWBAK14fOOCgrUt4CBVP4K0VKe0uOPxLSAu26y")
                .data("hiddenIsMobile", "desktop")
                .data("txtCardNumber", "3819276248xxxxxx")
                .data("SavedCardNumber", "")
                .data("btnNext","N%C3%A4sta")
                .cookies(loginForm.cookies())
                .get();


        System.out.println(document.html());

我没有太多经验，所以我不知道在哪里寻找问题.一些想法:

I dont have much experience so I dont know where to look for the problem. Some thoughts:

• 我应该使用.post()还是.get()?
• 在使用chrome devoloper工具时，发布数据是我使用.data(.., ..)函数发送的所有数据.但是，如果发送__VIEWSTATE我收到错误消息，为什么?
• 我应该发送解密或加密的数据吗? (均在chrome devoloper工具中提供).
• 使用正确的URL吗?

• Should I use .post() or .get()?
• When looking in chrome devoloper tools, the post data is all the data I send with .data(.., ..) function. However if a send __VIEWSTATE I get an error, why?
• Should I send decrypted or crypted data? (both are presented in chrome devoloper tools).
• Am using the correct URL?

推荐答案

您应同时使用get和post:
首先，您必须将不带参数的get请求发送到URL- http://kortladdning3. chalmerskonferens.se/Default.aspx .服务器回复一些cookie，以及稍后将使用的两个值-__VIEWSTATE和__EVENTVALIDATION.这些值因请求而异，因此您不能像以前那样使用硬编码的值.
提取这些值后，发送post请求，并使用与现在相同的字段.
您可以在此处查看非常相似的过程-提交登录问题Jsoup的表单

You should use both get and post:
First you have to send get request with no parameters to the URL - http://kortladdning3.chalmerskonferens.se/Default.aspx. The server replies with some cookies, and two values you'll use later - __VIEWSTATE and __EVENTVALIDATION. These values vary from request to request, so you can't use hard-coded values like you did.
After extracting these values, send post request, with the same fields you do now.
You can look at a very similar procedure here - Problems submitting a login form with Jsoup

这篇关于使用jsoup登录网站的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！