删除指定目录下的指定后缀文件

package org.zln.module1.demo1;

import org.apache.log4j.Logger;

import java.io.File;

/**
 * 删除指定根目录下，及其子目录中，指定后缀的文件
 * Created by coolkid on 2015/6/13 0013.
 */

public class DeleteSuffix {
    /*默认待删除文件后缀*/
    private static final String SUFFIX = ".jar";

    protected static Logger logger = Logger.getLogger(DeleteSuffix.class);

    public static void main(String[] args) {
        /*预处理*/
        if (null == args || args.length == 0||args.length>2){
            throw new RuntimeException("命令参数不正确，格式为 java 根路径 后缀");
        }

        /*根路径*/
        File rootPathFile = new File(args[0]);
        if (!rootPathFile.exists()){
            throw new RuntimeException("路径错误，不存在:"+rootPathFile.getAbsolutePath());
        }
        /*待删除后缀*/
        String suffixCurr = args.length==2?args[1]:SUFFIX;

        deleteSuffixFile(rootPathFile,suffixCurr);


    }

    /**
     * 删除指定后缀的文件
     * @param rootPathFile 根路径
     * @param suffixCurr 后缀
     */
    private static void deleteSuffixFile(File rootPathFile, String suffixCurr) {
        if (rootPathFile.isDirectory()){
            File[] files = rootPathFile.listFiles();
            for (File tempFile:files){
                deleteSuffixFile(tempFile,suffixCurr);
            }
        }else {
            String suffix = rootPathFile.getName().substring(rootPathFile.getName().lastIndexOf("."));
            if (suffixCurr.equalsIgnoreCase(suffix)){
                logger.debug("删除："+rootPathFile.getAbsolutePath());
                rootPathFile.delete();
            }
        }
    }
}