register.java

简单的网络聊天室

package com.oristand;

import java.io.*;
/*

public class Register {

	public static boolean Register(String s1,String s2){
		boolean flag=true;
		RandomAccessFile rf=null;
		if(Register.exist(s1, s2)){
			flag=false;
		}else{
		   try {
			 rf=new RandomAccessFile("c:\\jilu.txt","rw");
		     rf.seek(rf.length());
		     rf.writeBytes(s1+",");
		     rf.writeBytes(s2+"\n");
		     rf.close();
		     flag=true;
		
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		}
		
		
		
		return flag;

	}
    public static boolean exist(String s1,String s2){
		boolean flag=true;
		BufferedReader br=null;
		try {
		    br=new BufferedReader(new FileReader("c:\\jilu.txt"));
		    String ss1=br.readLine();
		    while(ss1!=null){
		    	String ss2=br.readLine();
		    	String[] ss3=ss2.split(",");
		    	if(ss3[0].equals(s1)){
		    		flag=true;
		    		break;
		    		
		    	}else{
		    		ss1=br.readLine();
		    		
		    	}
		    	
		    }
		
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
    	
    	
    	return flag;
    	
    	
    	
    }
}
*/
public class Register{
	public static void saveInformation(String filename,String data){
		try{
			FileOutputStream out=new FileOutputStream(filename,true);
			PrintWriter pw=new PrintWriter(out);
			pw.println(data);
			pw.close();
		}catch(FileNotFoundException e){
			e.printStackTrace();
		}
	}
	public static boolean exist(String filename1,String s1){
		boolean flag=true;
		BufferedReader br=null;
		try {
		    br=new BufferedReader(new FileReader(filename1));
		    String ss1=br.readLine();
		    while(ss1!=null){
		    	
		    	String[] ss3=ss1.split(",");
		    	if(ss3[0].equals(s1)){
		    		flag=true;
		    		break;
		    		
		    	}else{
		    		ss1=br.readLine();
		    		
		    	}
		    	
		    }
		
		} catch (FileNotFoundException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		catch (Exception e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
	   return flag;
	}
}