java - 与网页自动交互

Question

我需要从 web page 检索信息只接受表单作为输入。

我通常使用 HttpClient 来检索信息并解析 html，但此页面采用 Javascript 而不是显式 url 作为参数，并再次将输入打印为 javascript。

我尝试过 HTMLUnit，但速度慢得令人痛苦，尤其是在 Android 上。此外，我似乎无法使其正常工作，因为我无法在填写表单后检索 html，可能是由于该页面是 javascrpit(请参阅附加代码)。

如何从中检索信息 web page在安卓中？

干杯:D

package com.htmlUnitTest;

import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlForm;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.HtmlSubmitInput;
import com.gargoylesoftware.htmlunit.html.HtmlTextInput;

public class HtmlUnitTest {

    /**
     * @param args
     */
    public static void main(String[] args) {

        try {

            submittingForm();


        } catch (Exception e) {

            System.out.println("Something bad happened");

            e.printStackTrace();
        }



    }



    static public void submittingForm() throws Exception {
        final WebClient webClient = new WebClient();

        // Get the first page
        final HtmlPage page1 = webClient.getPage(
                  "http://mobile.viaggiatreno.it/viaggiatreno/mobile/stazione?lang=IT");

        System.out.println(page1.getForms());

        // Get the form that we are dealing with and within that form, 
        // find the submit button and the field that we want to change.
        final HtmlForm form = page1.getForms().get(0);

        final HtmlSubmitInput button = form.getInputByValue(" Cerca ");
        final HtmlTextInput textField = form.getInputByName("stazione");

        // Change the value of the text field
        textField.setValueAttribute("Milano Centrale");

        // Now submit the form by clicking the button and get back the second page.
        final HtmlPage page2 = button.click();

        System.out.println(page2.getAnchors());

        webClient.closeAllWindows();
    }


}

Answer 1

您需要发布到/viaggiatreno/mobile/stazione，解析答案，然后如果您想深入了解，则再次发布。有关在此处发帖的更多信息:google.com/search?q=webClient+post