如何在Java中与网页交互？ [英] How to interaction with a webpage in Java?

问题描述

现在，我是Java中的初学者。我以某种方式设法理解以下代码。

Now, I am a beginner in Java. I have somehow managed to understand the following code.

 import java.net.*;
  import java.io.*;

 public class URLConnectionReader {
    public static void main(String[] args) throws Exception {
        URL yahoo = new URL("http://www.yahoo.com/");
        URLConnection yc = yahoo.openConnection();
        BufferedReader in = new BufferedReader(
                                new InputStreamReader(
                                yc.getInputStream()));
        String inputLine;

        while ((inputLine = in.readLine()) != null) 
            System.out.println(inputLine);
        in.close();
    }
}

我实际上付出了相当大的努力，所以请做明白我是初学者。我想与网页互动。从代码中，我明白了网页的任何信息都会被简单地显示出来。我只是需要你的帮助来建议我，我应该接下来学习。

I actually got that with quite some effort so please do understand I am a beginner. I want to interact with the webpage. From the code, I understood whatever information of the webpage will be simply displayed. I just need your help to advice me wha should I study next.

我希望我的网页进入网页，登录
然后点击按钮
在两列之间进行比较，如果不相等则报告给我。

I want my webpage to go to the webpage, login Then click on a button Do a comparision between two columns and report it to me if it isn't equal.

我确实在HTTP上阅读，我知道可以进行webinteraction。
人们的代码超出了我的理解。

I did do reading on HTTP and I know webinteraction is possible. People have code out there that is above my understanding.

我对遗传或封装知之甚少[仍在学习]（如果需要）

I don't know much about inheritence or encapsulation [still learning](incase it is required)

使用我提供的代码，是否可以添加我的要求？
因为人们正在给出一个带衬里的代码或30行代码...请注意我不是很好。

Using the code I provided, is it possible to add on my requirements? Cause people are giving one lined codes or 30 lined code...please realize I am not so good in it.

我做了研究。我只是希望有人给我指导。由于有这么多方法，我开始感到困惑。

I did do research .I just want someone to give me direction. I am starting to get confused due to so many methods.

我想有人告诉我php在这件事上更容易，但在php中我甚至都不知道。 （我知道它是OOPS语言，但仍然）

I think someone told me php is easier on this matter, but in php I don't even know anything. (I know it is OOPS language but still)

真正赞赏任何形式的指导。

Any sort of guidance is truely appreciated.

推荐答案

如果您确实需要与网站互动，那么selenium / webdriver非常适合您的需求：

If you actually need to interact with the website then selenium/webdriver is perfect for your needs:

http://code.google.com/p/selenium/wiki/GettingStarted

Google搜索示例：

Sample Google search:

package org.openqa.selenium.example;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.htmlunit.HtmlUnitDriver;

public class Example  {
    public static void main(String[] args) {
        // Create a new instance of the html unit driver
        // Notice that the remainder of the code relies on the interface, 
        // not the implementation.
        WebDriver driver = new HtmlUnitDriver();

        // And now use this to visit Google
        driver.get("http://www.google.com");

        // Find the text input element by its name
        WebElement element = driver.findElement(By.name("q"));

        // Enter something to search for
        element.sendKeys("Cheese!");

        // Now submit the form. WebDriver will find the form for us from the element
        element.submit();

        // Check the title of the page
        System.out.println("Page title is: " + driver.getTitle());
    }
}

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