javascript - 尝试在android中使用jsoup提交表单

Question

我正在尝试使用 jsoup 提交网站表单。问题是当我尝试在网络浏览器上提交表单时，会弹出一个警告框，提示您确定吗？这是它的快照

我试图搜索所有内容以提交弹出窗口，但找不到任何内容。

这是目前的代码

package com.example.ebad.apppw;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;

import java.util.HashMap;

public class course_registration_post extends Activity {

    String url = "http://111.68.99.8/StudentProfile/RegisterCourse.aspx";
    HashMap<String, String> hashMaps;

    Button button;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.temp);

        hashMaps = Data.map;

        button  = (Button) findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                new course_post().execute();

            }
        });


    }


    private class course_post extends AsyncTask<Void, Void, Void> {

        @Override
        protected Void doInBackground(Void... params) {

            try
            {

                Connection.Response loginForm = Jsoup.connect(url).method(Connection.Method.GET).timeout(4000).execute();
                Document document = loginForm.parse();


                String viewstate2 = document.select("input[name=__VIEWSTATE]").attr("value");
                String stategenerator2 = document.select("input[name=__VIEWSTATEGENERATOR]").attr("value");
                String Eventvalidation2 = document.select("input[name=__EVENTVALIDATION]").attr("value");

                Document doc = Jsoup.connect(url)
                        .cookies(hashMaps)
                        .data("__EVENTTARGET", "")
                        .data("__EVENTARGUMENT", "")
                        .data("__VIEWSTATE", viewstate2)
                        .data("__VIEWSTATEGENERATOR", stategenerator2)
                        .data("__VIEWSTATEENCRYPTED","")
                        .data("__EVENTVALIDATION", Eventvalidation2)
                        .data("ctl00$Body$COURSES_OFFERED$ctl06$cbox","on")
                        .data("ctl00$Body$RegisterButton", "Register Selected Courses")
                        .post();

  /*              JSContext context = new JSContext();
                String script =
                        "function factorial(x) { var f = 1; for(; x > 1; x--) f *= x; return f; }\n" +
                                "var fact_a = factorial(a);\n";
                context.evaluateScript(script);
*/
                String s = doc.select("span[id=ctl00_MessageLabel]").text();

                System.out.println(doc);


                System.out.println(viewstate2);
                System.out.println(stategenerator2);
                System.out.println(Eventvalidation2);
                System.out.println(s);


            }catch (Exception e)
            {
                e.printStackTrace();}


            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
        }

    }
}

这是我在网站上找到的警告框代码

我已尽一切努力使它工作，但我不知道我做错了什么。如果你们帮我解决这个问题，那将非常有帮助。

这是最终状态

__EVENTTARGET:
__EVENTARGUMENT:
__VIEWSTATE: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
__VIEWSTATEGENERATOR:1DA4211B
__VIEWSTATEENCRYPTED:
__EVENTVALIDATION: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
ctl00$Body$RegisterButton:Register Selected Courses

Answer 1

试试这个

Connection.Response loginForm = Jsoup
        .connect("http://111.68.99.8/StudentProfile/")
        .method(Connection.Method.GET)
        .userAgent(
                "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.0 Safari/537.36")
        .execute();

Document loginDoc = loginForm.parse();
String viewstate2 = loginDoc.select("input[name=__VIEWSTATE]").attr(
        "value");
String stategenerator2 = loginDoc.select(
        "input[name=__VIEWSTATEGENERATOR]").attr("value");
String Eventvalidation2 = loginDoc.select(
        "input[name=__EVENTVALIDATION]").attr("value");

Document document = Jsoup
        ..userAgent(
                    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.0 Safari/537.36")
        .connect("http://111.68.99.8/StudentProfile/RegisterCourse.aspx")
        .data("__EVENTTARGET", "").data("__EVENTARGUMENT", "")
        .data("__VIEWSTATE", viewstate2)
        .data("__VIEWSTATEGENERATOR", stategenerator2)
        .data("__VIEWSTATEENCRYPTED", "")
        .data("__EVENTVALIDATION", Eventvalidation2)
        .data("ctl00$Body$COURSES_OFFERED$ctl06$cbox", "on")
        .data("ctl00$Body$RegisterButton", "Register Selected Courses")
        .data("USERNAME_KEY", "USERNAME_VALUE")
        .data("PASSWORD_KEY", "PASSWORD_VALUE")
        .cookies(loginForm.cookies()).post();

上面代码的一些解释。

1. 首先，您必须向登录页面http://111.68.99.8/StudentProfile/ 发出请求，以便生成一些cookie。这些 cookie loginForm.cookies() 是实际登录所必需的。
2. 该页面包含一些其他值，这些值必须包含在第二个请求中才能使其正常工作。
3. 您使用的是 android，因此您必须包含 userAgent，否则您将发送与移动设备相对应的数据，并且可能会被网站拒绝。
4. 您案件的确认不会影响您。通过对您需要的值进行硬编码来完成这项工作，否则将由在幕后运行的 javascript 完成。

一般来说，确保发送所有需要的数据的唯一方法是检查开发工具的Network 选项卡并查看实际的Request headers。