//主題帖cache規則：讀則加入，否則不需要加入
private static cache topiccache = new cache(300*1000*1000);
//回帖cache
private static cache replycache = new cache(300*1000*1000);
/*** 取主題貼，首先應該從cache中取
* * @param forumid
* @param topicid
* @return
*/public string gettopiccontent(int forumid, int topicid)
// 如果cache中沒有，就從檔案中讀
tryin.close();
//加入cache
topiccache.add(forumid+"_"+topicid,s2);
return s2;
}catch (exception e)
return "";
}/**
* 取回貼，首先應該從cache中取
* * @param forumid
* @param topicid
* @return
*/public list getreplylist(int forumid, int topicid)
// 如果cache中沒有，就從檔案中讀
list list = new arraylist();// 回貼的檔案記錄的list，不需要分解。分解工作在client來完成
tryin.close();
//加入到cache中
replycache.add(forumid+"_"+topicid,list);
}catch (exception e)
return list;
}/**
* 發帖
* * @param forumid
* @param topicid
* @return
*/public void addtopic(int forumid, int topicid, string content)
//寫入檔案
printwriter out = new printwriter(new filewriter(gettopicfile(forumid,topicid)));
out.write(content);
out.close();
}catch (exception e)
}/**
* 續貼
* @param forumid
* @param topicid
* @param content
*/public void resumetopic(int forumid, int topicid, string content)
//寫入檔案
content=gettopiccontent(forumid,topicid)+content;
printwriter out = new printwriter(new filewriter(filepath));
out.write(content);
out.close();
//如果cache中有，則需要更新
object cachecontent=topiccache.get(forumid+"_"+topicid);
if(cachecontent!=null)
}catch (exception e)
}/**
* 回貼，如果沒有回過貼，要新建檔案；如果回過，要續加回貼
* @param forumid
* @param topicid
* @return
*/public void addreply(int forumid, int topicid,string content,string qq,string replytime)
else//以前回過貼，從檔案中讀出回貼數，並修改為+1
//修改回貼數
dataoutputstream out=new dataoutputstream(new bufferedoutputstream(new fileoutputstream(replycountpath)));
out.writeint(replycount);
out.close();
//寫入檔案
randomaccessfile rf=new randomaccessfile(filepath,"rw");
rf.seek(rf.length());
string str=new integer(replycount)+"\0x1e"+qq+"\0x1e"+replytime+"\0x1e"+content+"\n";
rf.write(str.getbytes());
rf.close();
}catch (exception e) }
/*** 刪主題貼和它的回貼
* @param forumid
* @param topicid
* @param content
*/public void deletetopic(int forumid, int topicid)
//如果cache中有，則需要刪除
object cachecontent=topiccache.get(forumid+"_"+topicid);
if(cachecontent!=null)
//刪除回貼
file reply=new file(getreplyfile(forumid,topicid));
if(reply.exists())
file replycount=new file(getreplycountfile(forumid,topicid));
if(replycount.exists())
//如果cache中有，需要刪除
object replylist=replycache.get(forumid+"_"+topicid);
if(replylist!=null)
}catch (exception e)
}/**
* 刪某個回貼
* @param forumid
* @param topicid
* @param content
*/public void deletereply(int forumid, int topicid,int replyid)
else }
rfbak.close();
rf.close();
//原檔案刪除
file file=new file(filepath);
file.delete();
//新檔案改名
file file2=new file(filepath+".bak");
file2.renameto(new file(filepath));
//如果cache中有，需要刪除
object replylist=replycache.get(forumid+"_"+topicid);
if(replylist!=null)
}catch (exception e)
}
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