作者: tianshi0253  链接：http://tianshi0253.javaeye.com/blog/203419  发表时间: 2008年06月15日

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包括四个文件，一个具体实现类，一个接口类，一个工厂类，一个调用类。

 FileSeacher.java

package com.jqqd.ywc;

import java.io.IOException;

public interface FileSeacher {
	void seacherFile(String s)throws IOException;
	void seacherFolder(String s);
}

 

 

FileSeacherImpl.java

package com.jqqd.ywc;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileSeacherImpl implements FileSeacher {

	static FileOutputStream outFile;

	static {
		try {
			outFile = new FileOutputStream("D:/seach_log.dat");
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
	}

	public void seacherFile(String s) throws IOException {
		File dir = new File(s);
		if (dir.exists()) {
			if (dir.isFile()) {
				System.out.println(s + " is an file!");
				writeToFile(s);
			} else {
				File[] dirList = dir.listFiles();
				for (int i = 0; i < dirList.length; i++) {
					if (dirList[i].isFile()) {
						System.out.println(dirList[i] + " is an file!");
						writeToFile(dirList[i].toString() + "\n");
					} else {
						seacherFile(dirList[i].toString());
					}
				}
			}
		} else {
			System.out.println(s + "is not existed!");
		}
	}

	private void writeToFile(String content) {
		try {
			outFile.write(content.getBytes());
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public void seacherFolder(String s) {
		// TODO Auto-generated method stub
		File dir = new File(s);
		if (dir.exists()) {
			if (dir.isFile()) {
				System.out.println(s + " is an file!");
			} else {
				writeToFile(s+ " is an folder\n");
				File[] dirList = dir.listFiles();
				for (int i = 0; i < dirList.length; i++) {
					if (dirList[i].isFile()) {
						System.out.println(dirList[i].toString() + " is an file!");
					} else {
						writeToFile(dirList[i].toString() + " is an folder\n");
						seacherFolder(dirList[i].toString());
					}
				}
			}
		}
	}

}

 

 

 Factory.java

package com.jqqd.ywc;
import java.io.IOException;

import com.jqqd.ywc.FileSeacherImpl;

public class Factory {
	public static void seacherFile(String s)throws IOException
	{
		 new FileSeacherImpl().seacherFile(s);
	}
	

}

 UseFactory.java

package com.jqqd.ywc;
import java.io.IOException;

import com.jqqd.ywc.Factory;

public class useFachory {
	
	
	public static void main(String[] args)
	{
		String s = "F:/";
		try {
			Factory.seacherFile(s);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
}

 

 

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文章来源:http://tianshi0253.javaeye.com/blog/203419