Java工具类：给程序增加版权信息

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 /* *Copyright © 2015 JiuTianNiao *武汉九天鸟科技有限公司 *http://JiuTianNiao.com *All rights reserved. */package com.jiutianniao.p2p.base.util;import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import org.apache.log4j.Logger;//给java文件，增加版权信息public class CopyrightUtil {private static Logger log = Logger.getLogger(CopyrightUtil.class);public static void main(String[] args) throws Exception {//java文件所在目录String dir = "E:/GitRepository/funds";File file = new File(dir);addCopyright4Directory(file);}public static void addCopyright4Directory(File file) throws Exception {File[] files = file.listFiles();if (files == null || files.length == 0){return;}for (File f : files) {if (f.isFile()) {addCopyright4File(f);System.out.println("文件===" + f.getName());} else {System.out.println("目录==" + f.getName());addCopyright4Directory(f);}}}public static void addCopyright4File(File file) throws Exception {String fileName = file.getName();boolean isJava = fileName.endsWith(".java");if (!isJava) {log.info("This file is not java source file,filaName=" + fileName);return;}if (isJava) {// 版权字符串String copyright = "/*\n *Copyright © 2015 JiuTianNiao\n "+ "*武汉九天鸟科技有限公司\n " + "*http://JiuTianNiao.com\n "+ "*All rights reserved.\n */\n";            //尝试使用了RandomAccessFile.writeUTF，问题是开头字符是“NUL”，没能解决。BufferedReader br = new BufferedReader(new FileReader(file));String line;String content = "";//读取一行，一定要加上“换行符”,Windows下可以直接用“\n”String lineSeperator ="\n";//lineSeperator = System.getProperty("line.separator")while ((line = br.readLine()) != null) {content += line + lineSeperator;}br.close();        //把拼接后的字符串写回去FileWriter fileWriter = new FileWriter(file);fileWriter.write(copyright);fileWriter.write(content);fileWriter.close();}}}
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