java调用dos命令

最新推荐文章于 2025-12-05 17:02:52 发布

原创最新推荐文章于 2025-12-05 17:02:52 发布 · 69 阅读

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#java #操作系统 #runtime

本文提供了一个使用Java执行CMD命令并获取输出的例子。通过两种不同的方法展示了如何调用外部命令，包括tree命令来查看目录结构。代码示例中包含了异常处理及进程销毁等关键步骤。

package com;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class CommonUtils {

	public static String exeCMD1(String cmd){
		cmd = "cmd.exe /c "+cmd;
		Process process = null;
		StringBuffer sb = new StringBuffer();
		BufferedReader reader = null;

		try {
			process = Runtime.getRuntime().exec(cmd);
			reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			while(true){
				String str = reader.readLine();
				if(str==null) break;
				System.out.println(str);
				sb.append(str);
			}

			process.destroy();
		} catch (Exception e) {
			// TODO: handle exception
		}
		return sb.toString();
	}
	public static String exeCMD2(String cmd){
		String[] args = new String[]{"cmd","/c",cmd};  
		Process process = null;
		StringBuffer sb = new StringBuffer();
		BufferedReader reader = null;

		try {
			process = Runtime.getRuntime().exec(args);
			reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			while(true){
				String str = reader.readLine();
				if(str==null) break;
				System.out.println(str);
				sb.append(str);
			}

			process.destroy();
		} catch (Exception e) {
			// TODO: handle exception
		}
		return sb.toString();
	}

	public static void main(String[] args){
		CommonUtils.exeCMD1("tree");
		CommonUtils.exeCMD1("tree");
	}

}