Java爬虫——人人网模拟登录

人人网登录地址：http://www.renren.com/

此处登录没有考虑验证码验证码。

首先对登录方法进行分析

有两种方法。

一）在Elements中分析源码

　　发现登录点击后的事件是http://www.renren.com/PLogin.do

二）在Network中分析网络请求

请求链接：http://www.renren.com/ajaxLogin/login?1=1&uniqueTimestamp=2017110237292

表单数据：

email 账号用户名
icode 验证码，可为空
origURL : http://www.renren.com/home
domain:renren.com
key_id:1 
captcha_type:web_login
password: 密码，需要对输入的密码进行加密处理
rkey: 密码处理 
f: 未知

此处采取直接使用Elements发现的触发事件。

 1 package 人人网模拟登录;
 2 
 3 import org.apache.http.Header;
 4 import org.apache.http.NameValuePair;
 5 import org.apache.http.client.ResponseHandler;
 6 import org.apache.http.client.entity.UrlEncodedFormEntity;
 7 import org.apache.http.client.methods.CloseableHttpResponse;
 8 import org.apache.http.client.methods.HttpGet;
 9 import org.apache.http.client.methods.HttpPost;
10 import org.apache.http.impl.client.BasicResponseHandler;
11 import org.apache.http.impl.client.CloseableHttpClient;
12 import org.apache.http.impl.client.HttpClients;
13 import org.apache.http.message.BasicNameValuePair; 
14 import java.util.ArrayList;
15 import java.util.List;
16 
17 public class Renren {
18     public static void main(String[] args) throws Exception{
19         CloseableHttpClient closeableHttpClient = HttpClients.createDefault() ;
20         HttpPost httpPost = new HttpPost("http://www.renren.com/PLogin.do") ;
21 
22         String userName = " " ;   // 账号写入
23         String passWord = " " ;   // 密码写入
24         List<NameValuePair> dlbd = new ArrayList<NameValuePair>();
25         // 登录表单设置
26         dlbd.add(new BasicNameValuePair("domain", "renren.com"));
27         dlbd.add(new BasicNameValuePair("isplogin", "true"));
28         dlbd.add(new BasicNameValuePair("submit", "登录"));
29         dlbd.add(new BasicNameValuePair("email", userName));
30         dlbd.add(new BasicNameValuePair("password", passWord));
31         httpPost.setEntity(new UrlEncodedFormEntity(dlbd));
32         // Post请求
33         CloseableHttpResponse closeableHttpResponse = closeableHttpClient.execute(httpPost) ;
34         // 获取响应头
35         Header locationHeader = closeableHttpResponse.getFirstHeader("Location");
36         // Get请求
37         String header =  locationHeader.getValue();
38         HttpGet httpGet = new HttpGet(header) ;
39         ResponseHandler<String> responseHandler = new BasicResponseHandler();
40         String responseBody = closeableHttpClient.execute(httpGet, responseHandler);
41         System.out.println(responseBody);
42     }
43 }