public static void main(String[] args) {
		 File file = new File("D:\\WindowsETC\\ETC_Managent\\apache-tomcat\\bin");//文件目录
		File [] files = file.listFiles();
		String fileName = "";
		for(File f: files){
		fileName = f.getName();
		
		if(fileName.endsWith(".gz")&&fileName.startsWith("ETC")){
		if(f.delete()){
		System.out.println("已删除文件："+fileName);
		}
		}
		}
		}

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.io.IOUtils;
/**
 * 
 * @ClassName: Md5 
 * @Description: TODO
 * @author: 92649498
 * @date: 2020年5月12日 下午6:18:30  
 * Class explain:升级程序生成 MD5
 */
public class Md5 {
	public static void main(String[] args) {
		//升级包的 路径 生成MD5
		String fileName="I:\\升级包\\万能升级包\\2020年5月12日\\LR0_2.3.4.zip";
		String md5Hex = null;
		FileInputStream fileInputStream = null;
		
		try {
			fileInputStream = new FileInputStream(fileName);
			md5Hex = DigestUtils.md5Hex(IOUtils.toByteArray(fileInputStream));
			System.out.println(md5Hex);

		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			if (fileInputStream != null) {
				try {
					fileInputStream.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
		String a="2231";//本地
		String b="233";//升级包
		System.out.println(b.compareTo(a));
	    if (b.compareTo(a)>0) {
			System.out.println("升级");
		}else {
			System.out.println("不升级");

		}
		
		
	}

}