a05481d5340b001c1915ec98d6fbfb09

基于linux操作系统

package deng;

import java.io.*;
import java.util.ArrayList;

import javax.swing.JOptionPane;

public class FilesIO {
	
	public static void main(String a[]){   
		File file=new File("E:\\FireWall");
		if(file.exists()){
			System.out.println("****************");
			try {
				file=new File("E:\\FireWall\\RuleScript.txt");
				FileWriter fw=new FileWriter(file);
				fw.write("LJGHKJGKJGKJ");
				fw.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		}else{
			try {
				if(file.mkdirs())
					System.out.println("?????????????");
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	
	
	public static void writeRuleToScript(Rule rule,PrintWriter pw){
		
		String strRule="";
		String[] direction=rule.getDirection();
		
		for(int i=0;i<direction.length;i++){
			if(direction[i]!=null)
			{  //System.out.println(direction[i]+"????????");
				strRule="iptable -A  "+direction[i]+" -p "+rule.getProtocol()+" -s "+rule.getIP()
				  +" --sport "+rule.getSport()+" --dport "+rule.getDport()+" -j "+rule.getStrategy();
				pw.println(strRule);
				//  System.out.println(strRule);
			}
		}
	}
	
	
	//如何文件中天插入信息而不覆盖原有信息？？？？？
	public static boolean writeAllRulesToScript(MyArrayList ruleList){
		File file=new File("E:\\FireWall\\RuleScript.txt");
		FileOutputStream fos=null;
		PrintWriter pw=null;
		boolean flag=false;
		if(file.exists()){
		try {
			fos=new FileOutputStream(file,true);
			pw=new PrintWriter(fos);
			
			for(int i=0;i<ruleList.size();i++){
				Rule rule=(Rule)ruleList.get(i);
				   writeRuleToScript(rule,pw);
			  }
			flag=true;
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			 flag=false;
		    JOptionPane.showMessageDialog(null,"向脚本文件中写入时出错！" );	
		}	
		
		}else{
			 flag=false;
			JOptionPane.showMessageDialog(null," 请事先创建文件夹E:\\FireWall！" );
				
		}
		pw.close();
		return flag;
	}
	
	
	
	public static void saveRuleListToFile(MyArrayList ruleList){
		File file=new File("E:\\FireWall\\RuleScript.txt");
		FileOutputStream fos=null;
		ObjectOutputStream oos=null;
		if(file.exists()){
			try {
				fos=new FileOutputStream(file);
				oos=new ObjectOutputStream(fos);
				oos.writeObject(ruleList);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
				JOptionPane.showMessageDialog(null,"向文件中保存数据时出错！" );
			}
			
		}else{
			try {
				file.createNewFile();
				fos=new FileOutputStream(file);
				oos=new ObjectOutputStream(fos);
				oos.writeObject(ruleList);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
				JOptionPane.showMessageDialog(null,"向文件中保存数据时出错！" );
			}
			
			
		}
		
		try{
		   if(oos!=null)oos.close();
		}catch(Exception ee){
			ee.printStackTrace();
			JOptionPane.showMessageDialog(null,"无法关闭资源！" );
		}
	}
	
	
	public static MyArrayList readRuleListFromFile(){
		File file=new File("E:\\FireWall\\RuleScript.txt");
		MyArrayList myArrayList=new MyArrayList();
		FileInputStream fis=null;
		ObjectInputStream ois=null;
		if(file.exists()){
			try {
				fis=new FileInputStream(file);
			    ois=new ObjectInputStream(fis);
				myArrayList=(MyArrayList)ois.readObject();
				
			} catch (Exception e) {
				// TODO Auto-generated catch block
				
				e.printStackTrace();
				JOptionPane.showMessageDialog(null,"从文件中读取数据时出错！" );
			}
			
		}else{
				try {
					file.createNewFile();
					fis=new FileInputStream(file);
					ois=new ObjectInputStream(fis);
					myArrayList=(MyArrayList)ois.readObject();
					
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
					JOptionPane.showMessageDialog(null,"从文件中读取数据时出错！" );
				}
			
		}
		
		try{
			if(ois!=null)ois.close();
			}catch(Exception ee){
				ee.printStackTrace();
				JOptionPane.showMessageDialog(null,"无法关闭资源！" );
			}
		return myArrayList;
	}

}