java去注释

 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

public class CopyJava {

 public static void main(String[] args) throws IOException {
  copy("e:/src", "e:/desc"); // 这里写好源文件夹和目的文件夹
 }

 private static void copy(String srcPath, String descPath) throws IOException {
  copy(new File(srcPath), new File(descPath));
 }

 private static void copy(File srcFile, File descFile) throws IOException {
  if (srcFile.isFile()) { // 文件
   File parent = descFile.getParentFile();
   if (!parent.exists()) {
    parent.mkdirs(); // 创建文件夹
   }
   if (srcFile.getName().endsWith(".java")) {
    copyJava(srcFile, descFile);
   } else {
    copyFile(srcFile, descFile);
   }
  } else { // 文件夹
   for (File file : srcFile.listFiles()) {
    // 相对路径
    String srcPath = file.getAbsolutePath().substring(srcFile.getAbsolutePath().length());
    copy(file, new File(descFile.getAbsolutePath() + srcPath));
   }
  }
 }

 private static void copyJava(File srcFile, File descFile) throws IOException {
  BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(descFile)));
  BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(srcFile)));
  String line;
  while ((line = br.readLine()) != null) {
   bw.write(line.replaceFirst("/\\*     \\*/", "")); // 注意这里，如果不行，要适当修改
   bw.write("\n");
  }
  br.close();
  bw.close();
 }

 private static void copyFile(File srcFile, File descFile) throws IOException {
  OutputStream output = new FileOutputStream(descFile);
  InputStream input = new FileInputStream(srcFile);
  byte[] buffer = new byte[1024 * 4];
  int n = 0;
  while ((n = input.read(buffer)) != -1) {
   output.write(buffer, 0, n);
  }
  input.close();
  output.close();
 }

}