JAVA使用HtmlUnit爬虫工具模拟登陆CSDN案例

<dependencies>

<!-- https: //mvnrepository测试数据/artifact/net.sourceforge.htmlunit/htmlunit -->

<dependency>

<groupid>net.sourceforge.htmlunit</groupid>

<artifactid>htmlunit</artifactid>

<version> 2.18 </version>

</dependency>

<!-- https: //mvnrepository测试数据/artifact/org.jsoup/jsoup -->

<dependency>

<groupid>org.jsoup</groupid>

<artifactid>jsoup</artifactid>

<version> 1.9 . 2 </version>

</dependency>

</dependencies>

package com.test;

import java.io.ioexception;

import java.net.malformedurlexception;

import java.util.hashmap;

import java.util.map;

import java.util.set;

import com.gargoylesoftware.htmlunit.browserversion;

import com.gargoylesoftware.htmlunit.failinghttpstatuscodeexception;

import com.gargoylesoftware.htmlunit.nicelyresynchronizingajaxcontroller;

import com.gargoylesoftware.htmlunit.silentcsserrorhandler;

import com.gargoylesoftware.htmlunit.webclient;

import com.gargoylesoftware.htmlunit.html.htmlbuttoninput;

import com.gargoylesoftware.htmlunit.html.htmlform;

import com.gargoylesoftware.htmlunit.html.htmlpage;

import com.gargoylesoftware.htmlunit.html.htmlpasswordinput;

import com.gargoylesoftware.htmlunit.html.htmltextinput;

import com.gargoylesoftware.htmlunit.util.cookie;

public class simulatelogin

{

  //访问的目标网址（csdn）

  private static string target_url = "https://passport.csdn.net/account/login?from=http://HdhCmsTestcsdn.net" ;

  public static void main(string[] args) throws failinghttpstatuscodeexception, malformedurlexception, ioexception

  {

   // 模拟一个浏览器

   webclient webclient = new webclient(browserversion.chrome);

   // 设置webclient的相关参数

   webclient.setcsserrorhandler( new silentcsserrorhandler());

   //设置ajax

   webclient.setajaxcontroller( new nicelyresynchronizingajaxcontroller());

   //设置支持js

   webclient.getoptions().setjavascriptenabled( true );

   //css渲染禁止

   webclient.getoptions().setcssenabled( false );

   //超时时间

   webclient.getoptions().settimeout( 50000 );

   //设置js抛出异常:false

   webclient.getoptions().setthrowexceptiononscripterror( false );

   //允许重定向

   webclient.getoptions().setredirectenabled( true );

   //允许cookie

   webclient.getcookiemanager().setcookiesenabled( true );

   // 模拟浏览器打开一个目标网址

   htmlpage page = webclient.getpage(target_url);

   /**等待js加载完全，csdn这点 特别坑，js加载时间超长！！！！！！！ 后人切记不要用csdn模拟登陆！！！！！！！**/

   webclient.waitforbackgroundjavascript( 10000 * 3 );

   // 根据form的名字获取页面表单，也可以通过索引来获取：page.getforms().get(0) 

   htmlform form = (htmlform) page.getelementbyid( "fm1" );  

   htmltextinput username = (htmltextinput) form.getinputbyname( "username" );

   htmlpasswordinput password = (htmlpasswordinput) form.getinputbyname( "password" );

   username.setvalueattribute( "********" ); //用户名

   password.setvalueattribute( "********" ); //密码

   htmlbuttoninput button = (htmlbuttoninput) page.getbyxpath( "//input[contains(@class, 'logging')]" ).get( 0 );

//  scriptresult result = page.executejavascript("javascript:document.getelementsbyclassname('logging')[0].click()");

//  htmlpage retpage = (htmlpage) result.getnewpage();

   htmlpage retpage = button.click();

   // 等待js驱动dom完成获得还原后的网页

   webclient.waitforbackgroundjavascript( 1000 );

   //输出跳转网页的地址

   system.out.println(retpage.geturl().tostring());

   //输出跳转网页的内容

   system.out.println(retpage.asxml());

   //获取cookie

   set<cookie> cookies = webclient.getcookiemanager().getcookies();

   map<string, string> responsecookies = new hashmap<string, string>();

   for (cookie c : cookies) {

    responsecookies.put(c.getname(), c.getvalue());

    system.out.print(c.getname()+ ":" +c.getvalue());

   }

   webclient.close();

   system.out.println( "success!" );

  }

}

//设置日志级别，原页面js异常不打印

logfactory.getfactory().setattribute( "org.apache测试数据mons.logging.log" , "org.apache测试数据mons.logging.impl.nooplog" );

java.util.logging.logger.getlogger( "com.gargoylesoftware.htmlunit" )

  .setlevel(level.off);

java.util.logging.logger.getlogger( "org.apache测试数据mons.httpclient" )

  .setlevel(level.off);