Java模拟HTTP Get Post请求轻松实现校园BBS自动回帖

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本文实例为大家分享了Java模拟HTTP Get Post请求，校园BBS自动回帖功能，供大家参考，具体内容如下

设计思路

找到帖子链接的集合，最后面数字变化, 就可以得到不同的帖子

防止帖子发表会又被删了的情况, 进行判断帖子是否存在

遍历这个集合, 对每个链接做回帖的POST请求

重难点

Note:

回帖需要用户登录信息
一种是利用Cookie
另一种是进行模拟登录
本文采用前者

代码

代码比较简单，注意事项是找到自己的Cookie，赋给String yourCookeie就可以直接运行

主要就是判断帖子存不存在，这是一个get请求，然后用post发送一个回帖，回帖信息在mapData.put(“message”, “友情帮顶了”)中硬编码为”友情帮顶了”，你可以修改

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.LinkedHashMap;
import java.util.Map;

public class Inter {

 private static final String baseRefer = "http://rs.xidian.edu.cn/forum.php?mod=viewthread&tid=";

 private static final String yourCookeie = "Q8qA_2132_saltkey=g1NJjJ3O; Q8qA_2132_lastvisit=1438243699; Q8qA_2132_lastcheckfeed=256730%7C1438252008; Q8qA_2132_auth=e11aEhhXpLgTYpfDK72YJZEgJHL1v70cUXXDtJ71VbU2dyuH%2BQHw3pGOJhsFxfjbVgNsvyfG1v%2BQlD0lt8kg6J%2B40W0; Q8qA_2132_st_t=256730%7C1438571068%7C51f8a322985e44f65ff1143329e6779a; Q8qA_2132_forum_lastvisit=D_106_1438571068; Q8qA_2132_myrepeat_rr=R0; Q8qA_2132_ulastactivity=d7degfMAwG5AGHshmT%2BwCq1L91znQpEa57p%2F0Vt7VHdC8DrOuGTT; Q8qA_2132_home_diymode=1; tjpctrl=1438781938176; Q8qA_2132_visitedfid=72D551D215D110D13D142D22D91D217D548; Q8qA_2132_st_p=256730%7C1438781224%7C7a73ef608dc3caf733308d63639b3bd0; Q8qA_2132_viewid=tid_773850; Q8qA_2132_smile=10D1; Q8qA_2132_sid=ZnfqQN; Q8qA_2132_lastact=1438781403%09forum.php%09ajax";

 public static void main(String[] args) {
  int startId = 774210; // you need change

  for (int i = 0; i < 100; i++) {
   postMessage(startId);
   startId++;
  }
 }

 public static boolean isExist(int id) {
  String tmpPath = baseRefer + id;

  URL url;
  try {
   url = new URL(tmpPath);

   HttpURLConnection con = (HttpURLConnection) url.openConnection();
   con.addRequestProperty("Content-Type", "text/html; charset=UTF-8");
   con.addRequestProperty(
     "User-Agent",
     "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36");
   con.addRequestProperty("Referer", "http://t.dianping.com/register");
   con.setRequestMethod("GET");

   if (con.getResponseCode() == 200) {
    InputStream inputStr = con.getInputStream();
    String info = new String(StreamTool.read(inputStr), "UTF-8");
    if (info.contains("抱歉，指定的主题不存在或已被删除或正在被审核")) {
     System.out.println("id=" + id + "帖子存在或已被删除！");
     return false;
    }
   }
  } catch (MalformedURLException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return true;

 }

 public static void postMessage(int id) {
  if (!isExist(id)) {
   return;
  }
  String tmpPath = baseRefer + id;

  StringBuilder path = new StringBuilder(tmpPath);
  Map<String, String> mapData = new LinkedHashMap<String, String>();
  mapData.put("mod", "post");
  mapData.put("action", "reply");
  mapData.put("replysubmit", "yes");
  mapData.put("infloat", "yes");
  mapData.put("handlekey", "fastpost");
  mapData.put("inajax", "1");
  mapData.put("message", "友情帮顶了");
  mapData.put("formhash", "86ec5d81");
  try {
   for (Map.Entry<String, String> mapEnt : mapData.entrySet()) {
    path.append("&");
    path.append(mapEnt.getKey() + "=");
    path.append(URLEncoder.encode(mapEnt.getValue(), "UTF-8"));
   }

   URL url = new URL(path.toString());
   HttpURLConnection con = (HttpURLConnection) url.openConnection();
   con.setRequestMethod("POST");
   con.setRequestProperty("Content-Type",
     "application/x-www-form-urlencoded");
   con.setRequestProperty("Content-Length",
     String.valueOf(path.length()));
   con.setRequestProperty(
     "User-Agent",
     "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36");
   con.setRequestProperty("Cookie", yourCookeie);
   con.setDoOutput(true);
   OutputStream outStr = con.getOutputStream();
   outStr.write(path.toString().getBytes());

   if (con.getResponseCode() == 200) {
    InputStream inputStr = con.getInputStream();
    String info = new String(StreamTool.read(inputStr), "UTF-8");
    System.out.println("在id=" + id + "成功发帖！");
    try {
     Thread.sleep(20 * 1000);
    } catch (InterruptedException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }

  } catch (UnsupportedEncodingException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (MalformedURLException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

 }
}

class StreamTool {

 public static byte[] read(InputStream inputStr) throws Exception {
  ByteArrayOutputStream outStr = new ByteArrayOutputStream();
  // TODO Auto-generated method stub
  byte[] buffer = new byte[1024];
  int len = 0;
  while ((len = inputStr.read(buffer)) != -1) {
   outStr.write(buffer, 0, len);
  }
  inputStr.close();
  return outStr.toByteArray();
 }

}

效果图