需要commons-io-2.0.1.jar
public class Test { public static void main(String args[]) throws IOException{ //GBK编码格式源码路径 String srcDirPath = "E:\\UTF8\\shshtv3\\src"; //转为UTF-8编码格式源码路径 String utf8DirPath = "E:\\UTF8\\shsht\\src"; //获取所有java文件 Collection<File> javaGbkFileCol = FileUtils.listFiles( new File(srcDirPath), new String[]{"java"}, true); for (File javaGbkFile : javaGbkFileCol) { //UTF8格式文件路径 String utf8FilePath = utf8DirPath+javaGbkFile.getAbsolutePath().substring(srcDirPath.length()); //使用GBK读取数据,然后用UTF-8写入数据 FileUtils.writeLines(new File(utf8FilePath), "UTF-8", FileUtils.readLines(javaGbkFile, "GBK")); System.out.println(utf8FilePath); } } }