删除Java项目中注释

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
 
/**
 * 删除Java代码中的注释
 */
public class DeleteComments {
 
    private static int count = 0;
 
    /**
     * 删除文件中的各种注释，包含//、/* * /等
     * @param charset 文件编码
     * @param file 文件
     */
    public static void clearComment(File file, String charset) {
        try {
            //递归处理文件夹
            if (!file.exists()) {
                return;
            }
 
            if (file.isDirectory()) {
                File[] files = file.listFiles();
                for (File f : files) {
                    clearComment(f, charset); //递归调用
                }
                return;
            } else if (!file.getName().endsWith(".java")) {
                //非java文件直接返回
                return;
            }
            System.out.println("-----开始处理文件：" + file.getAbsolutePath());
 
            //根据对应的编码格式读取
            BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), charset));
            StringBuffer content = new StringBuffer();
            String tmp = null;
            while ((tmp = reader.readLine()) != null) {
                content.append(tmp);
                content.append("\n");
            }
            String target = content.toString();
            String s = target.replaceAll("\\/\\/[^\\n]*|\\/\\*([^\\*^\\/]*|[\\*^\\/*]*|[^\\**\\/]*)*\\*+\\/", "");
            //System.out.println(s);
            //使用对应的编码格式输出
            BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset));
            out.write(s);
            out.flush();
            out.close();
            count++;
            System.out.println("-----文件处理完成---" + count);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    public static void clearComment(String filePath, String charset) {
        clearComment(new File(filePath), charset);
    }
 
    public static void clearComment(String filePath) {
        clearComment(new File(filePath), "UTF-8");
    }
 
    public static void clearComment(File file) {
        clearComment(file, "UTF-8");
    }
 
    public static void main(String[] args) {
        clearComment("D:\\SpringBoot\\src\\main\\java"); //删除目录下所有java文件注释
        //删除某个具体文件的注释
        //clearComment("D:\\SpringBoot\\src\\main\\java\\com\\auth\\UserAction.java");
    }
 
}