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【Java】 cmd判断本地网络状态及强度

作者:越泽 / 发布于2016/4/26/ 616

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;  
    }  
  
}

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　cmd　　本地网络　

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