webmagic模拟登录方案

• 方案一：模拟浏览器登录，用代码模拟表单填写，然后获取登陆后的信息，用apache的“HttpClients”进行信息保存。不需要考虑cookie失效问题。
• 方案二：直接拿去cookie信息，进行设置。可能会用时间限制，超过一定时间就不能再使用了，需要重新设置。
• 方案一实现：

• import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.http.HttpResponse;
  import org.apache.http.NameValuePair;
  import org.apache.http.client.ClientProtocolException;
  import org.apache.http.client.methods.HttpPost;
  import org.apache.http.client.methods.HttpUriRequest;
  import org.apache.http.message.BasicNameValuePair;
  import org.jsoup.Jsoup;
  import org.jsoup.nodes.Document;
  import org.jsoup.nodes.Element;
  
  import com.wgyscsf.utils.HttpUtils;
  
  
  public class SimulateLoginPolicy1 {
      static boolean result = false;
      public static void main(String[] args) {
          
          loginCsdnPager();
         
          try {
              loginedPager();
          } catch (ClientProtocolException e) {
             
              e.printStackTrace();
          } catch (IOException e) {
              
              e.printStackTrace();
          }
      }
  
     
      private static void loginedPager() throws IOException,
              ClientProtocolException {
         
          HttpUriRequest httpUriRequest = new HttpPost(
                  "http://blog.csdn.net/wgyscsf");
         
          httpUriRequest
                  .setHeader("Accept",
                          "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
          httpUriRequest.setHeader("Accept-Encoding", "gzip,deflate,sdch");
          httpUriRequest.setHeader("Accept-Language", "zh-CN,zh;q=0.8");
          httpUriRequest.setHeader("Connection", "keep-alive");
          // 模拟浏览器，否则CSDN服务器限制访问
          httpUriRequest
                  .setHeader(
                          "User-Agent",
                          "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36");
         
          HttpResponse response = HttpUtils.httpClient.execute(httpUriRequest);
          InputStream content = response.getEntity().getContent();
     
          BufferedReader br = new BufferedReader(new InputStreamReader(content));
          String line = "";
          String result = "";
          while ((line = br.readLine()) != null) {
              result += line;
          }
          br.close();
  
          System.out.println(result);
      }
  
      /**
       * 登录页面
       */
      private static void loginCsdnPager() {
          String html = HttpUtils
                  .sendGet("https://passport.csdn.net/account/login?ref=toolbar");// 这个是登录的页面
          Document doc = Jsoup.parse(html);
          // 获取表单所在的节点
          Element form = doc.select(".user-pass").get(0);
         
          String lt = form.select("input[name=lt]").get(0).val();
          String execution = form.select("input[name=execution]").get(0).val();
          String _eventId = form.select("input[name=_eventId]").get(0).val();
  
        
          List nvps = new ArrayList();
          nvps.add(new BasicNameValuePair("username", "[email protected]"));
          nvps.add(new BasicNameValuePair("password", "wanggaoyuan"));
          nvps.add(new BasicNameValuePair("lt", lt));
          nvps.add(new BasicNameValuePair("execution", execution));
          nvps.add(new BasicNameValuePair("_eventId", _eventId));
          
          String ret = HttpUtils.sendPost(
                  "https://passport.csdn.net/account/login?ref=toolbar", nvps);
         
          if (ret.indexOf("redirect_back") > -1) {
              System.out.println("登陆成功");
              result = true;
          } else if (ret.indexOf("登录太频繁") > -1) {
              System.out.println("登录太频繁，请稍后再试。。。。。");
              return;
          } else {
              System.out.println("登陆失败。");
              return;
          }
      }
  }

  方案二：使用浏览器的开发者工具将cookie手动加进去