最近想自動發帖回帖，拿某論壇試驗了一下，發現可行，不過後續沒有再使用，以免影響論壇正常運行。
1、帖子鏈接的格式為
http://bbs.***.***.**/forum.php?mod=viewthread&tid=774210
最後面774210數字變化, 就可以得到不同的帖子
2、防止帖子發表會又被刪了的情況, 進行判斷帖子是否存在
3、遞增後面的id 數字, 對每個鏈接做回帖的POST 請求
重難點
回帖需要用戶登錄信息一種是利用Cookie
另一種是進行模擬登錄
本文采用前者
判斷url 對應的帖子是否存在
有可能用戶發了帖子，比如url 為http://bbs.***.***.**/forum.php?mod=viewthread&tid=774200
後來該帖子用戶刪除了或者被管理員刪除了，雖然帖子不在了，但是該tid=774200 還是存在的
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，指定的主題不存在或已被刪除或正在被審核")) { System.out.println("id=" + id + "帖子存在或已被刪除！"); 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;}模擬發帖<br />代碼比較簡單，注意事項是找到自己的Cookie，賦給String yourCookeie
用post發送一個回帖，回帖信息在mapData.put("message", "友情幫頂了") 中
private static final String baseRefer = "http://bbs.**.**.**/forum.php?mod=viewthread&tid=";private static final String yourCookeie = "Q8qA_2132_saltkey=**; Q8qA_2132_lastvisit=****3699;";public static void main(String[] args) { int startId = 774210; // you need change for (int i = 0; i < 100; i++) { postMessage(startId); startId++; }}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", "友情幫頂了"); 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 + "成功發帖！ "); 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(); }}還有一個工具方法，將輸入流轉化為字節
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(); }}效果圖：
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。