Java cmd判断本地网络状态及强度

最新推荐文章于 2024-08-25 02:05:05 发布

iteye_13003

最新推荐文章于 2024-08-25 02:05:05 发布

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分类专栏： JAVA 文章标签：乔乐共享网络强度 status network

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本文介绍如何使用Java编写代码执行CMD命令，并通过解析命令输出来检测信号强度，包括丢包数量和平均延迟时间。

package com.anxin.ssk.util;

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

import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.anxin.ssk.common.Config;

public class CommandUtil {

	private static Logger log = LoggerFactory.getLogger(CommandUtil.class);

	/**
	 * 执行cmd命令
	 * 
	 * @param command
	 * @throws IOException
	 */
	public static String executeCmd(String command) throws IOException {
		log.info("Execute command : " + command);
		Runtime runtime = Runtime.getRuntime();
		Process process = runtime.exec("cmd /c " + command);
		BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF-8"));
		String line = null;
		StringBuilder build = new StringBuilder();
		while ((line = br.readLine()) != null) {
			log.info(line);
			build.append(line);
		}
		return build.toString();
	}

	/**
	 * 检测信号强度
	 * 
	 * @param command
	 * @throws IOException
	 */
	public static String checkSignalStrength() throws IOException {
		log.info("开始检测信号强度");
		String result = "未知";
		String cmdLines = executeCmd("ping " + Config.Http.SIGNAL_STRENGTH_URL);
		if (StringUtils.isNotEmpty(cmdLines)) {
			int lost = 0;
			int average = 0;

			if (cmdLines.indexOf("Packets:") >= 0) {
				lost = Integer.parseInt(cmdLines.substring(cmdLines.indexOf("Lost = ") + 7, cmdLines.lastIndexOf(" (")));
			}
			if (cmdLines.indexOf("Minimum = ") >= 0) {
				average = Integer.parseInt(cmdLines.substring(cmdLines.indexOf("Average = ") + 10, cmdLines.lastIndexOf("ms")));
			}

			log.info("丢包数：" + lost + "，平均时间：" + average + "ms！！！！！！！！");
			// 信号不好(有丢包现象)
			if (lost > 0) {
				result = "弱";
				log.info("信号不好(有丢包现象)");
			} else {
				// 没有网络
				if (average == 0) {
					result = "无";
					log.info("没有网络");

					// 信号正常(没有丢包现象)
				} else if (average > 0 && average <= 75) {
					result = "强";
					log.info("信号正常");
				} else if (average > 75 && average <= 150) {
					result = "中";
					log.info("信号比较弱");
				} else {
					result = "弱";
					log.info("信号不好");
				}
			}
		}

		return result;
	}

}