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【Java】替换文件或文件夹中得特定字符串

作者:huilange / 发布于2013/9/10/ 492


	package util;

	import java.io.BufferedReader;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.InputStreamReader;
	import java.io.PrintWriter;

	public class ReplaceWordUtil {
	public static void main(String[] args) {
	 /**
	 * arg0 文件路径
	 * arg1 需要替换的内容
	 * arg2 新内容
	 */
	 iteratorDirectory("d:/test","","");
	}

	public static void iteratorDirectory(String filepath,String oldStr,String replaceStr) {
	 File file = new File(filepath);
	 if (file.isDirectory()) {
	 String[] fileList = file.list();
	
	 for(int i=0;i<fileList.length;i++) {
	 iteratorDirectory(filepath+"\\"+fileList[i],oldStr,replaceStr);
	 }
	 }else {
	 replaceTxtByStr(filepath,oldStr,replaceStr);
	 }
	}
	 public static void replaceTxtByStr(String path,String oldStr,String replaceStr) {
	 String temp = "";
	 int len = oldStr.length();
	 StringBuffer tempBuf = new StringBuffer();
	 try {
	 File file = new File(path);
	 FileInputStream fis = new FileInputStream(file);
	 InputStreamReader isr = new InputStreamReader(fis);
	 BufferedReader br = new BufferedReader(isr);
	 StringBuffer buf = new StringBuffer();
	
	 while((temp = br.readLine()) != null) {
	 if(temp.contains(oldStr)) {
	 int index = temp.indexOf(oldStr);
	 tempBuf.append(temp);
	 tempBuf.replace(index, index+len, replaceStr);
	 buf.append(tempBuf);
	 tempBuf.setLength(0);
	 }else {
	 buf.append(temp);
	 }
	 buf = buf.append(System.getProperty("line.separator"));
	
	 }
	 br.close();
	 FileOutputStream fos = new FileOutputStream(file);
	 PrintWriter pw = new PrintWriter(fos);
	 pw.write(buf.toString().toCharArray());
	 pw.flush();
	 pw.close();
	 } catch (IOException e) {
	 e.printStackTrace();
	 }
	 }

	}

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