diff --git a/boot-service/src/main/java/com/xwbing/util/DoubleUtil.java b/boot-service/src/main/java/com/xwbing/util/DecimalUtil.java
similarity index 99%
rename from boot-service/src/main/java/com/xwbing/util/DoubleUtil.java
rename to boot-service/src/main/java/com/xwbing/util/DecimalUtil.java
index d8092b7..939693e 100644
--- a/boot-service/src/main/java/com/xwbing/util/DoubleUtil.java
+++ b/boot-service/src/main/java/com/xwbing/util/DecimalUtil.java
@@ -8,7 +8,7 @@ import java.math.BigDecimal;
  * 作者: xiangwb
  * 说明: 数字工具类
  */
-public class DoubleUtil {
+public class DecimalUtil {
     private static final int DEF_DIV_SCALE = 10;
 
     /**
diff --git a/boot-service/src/main/java/com/xwbing/util/PingUtil.java b/boot-service/src/main/java/com/xwbing/util/PingUtil.java
new file mode 100644
index 0000000..c0ceffe
--- /dev/null
+++ b/boot-service/src/main/java/com/xwbing/util/PingUtil.java
@@ -0,0 +1,101 @@
+package com.xwbing.util;
+
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.InetAddress;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 项目名称: boot-module-demo
+ * 创建时间: 2017/11/17 11:43
+ * 作者: xiangwb
+ * 说明: PingUtil
+ */
+public class PingUtil {
+    /**
+     * Jdk1.5的InetAddresss,代码简单
+     *
+     * @param ipAddress
+     * @return
+     */
+    public static boolean ping(String ipAddress) {
+        int timeOut = 3000; // 超时应该在3钞以上
+        try {
+            return InetAddress.getByName(ipAddress).isReachable(timeOut);// 当返回值是true时，说明host是可用的，false则不可。
+        } catch (IOException e) {
+            throw new RuntimeException("无法连接该地址");
+        }
+    }
+
+    /**
+     * 使用java调用cmd命令,这种方式最简单，可以把ping的过程显示在本地。
+     *
+     * @param ipAddress
+     */
+    public static boolean pingCmd(String ipAddress) {
+        String line;
+        try {
+            Process pro = Runtime.getRuntime().exec("ping " + ipAddress);
+            //根据操作系统修改字符，否则乱码(windows:gbk,linux:utf-8)
+            BufferedReader buf = new BufferedReader(new InputStreamReader(pro.getInputStream(), "gbk"));
+            while ((line = buf.readLine()) != null)
+                System.out.println(line);
+            return true;
+        } catch (Exception ex) {
+            throw new RuntimeException("无法连接该地址");
+        }
+    }
+
+    /**
+     * 也是使用java调用控制台的ping命令，这个比较可靠，还通用，使用起来方便：传入个ip，设置ping的次数和超时，就可以根据返回值来判断是否ping通。
+     *
+     * @param ipAddress
+     * @param pingTimes
+     * @param timeOut
+     * @return
+     */
+    public static boolean ping(String ipAddress, int pingTimes, int timeOut) {
+        BufferedReader br;
+        Runtime r = Runtime.getRuntime(); // 将要执行的ping命令,此命令是windows格式的命令
+        String pingCommand = "ping " + ipAddress + " -n " + pingTimes + " -w " + timeOut;
+        try { // 执行命令并获取输出
+            System.out.println(pingCommand);
+            Process p = r.exec(pingCommand);
+            if (p == null) {
+                return false;
+            }
+            br = new BufferedReader(new InputStreamReader(p.getInputStream())); // 逐行检查输出,计算类似出现=23ms
+            // TTL=62字样的次数
+            int connectedCount = 0;
+            String line;
+            while ((line = br.readLine()) != null) {
+                connectedCount += getCheckResult(line);
+            } // 如果出现类似=23ms TTL=62这样的字样,出现的次数=测试次数则返回真
+            br.close();
+            return connectedCount == pingTimes;
+        } catch (Exception ex) {
+            throw new RuntimeException("无法连接该地址");
+        }
+    }
+
+    // 若line含有=18ms TTL=16字样,说明已经ping通,返回1,否則返回0.
+    private static int getCheckResult(String line) { // System.out.println("控制台输出的结果为:"+line);
+        Pattern pattern = Pattern.compile("(\\d+ms)(\\s+)(TTL=\\d+)",
+                Pattern.CASE_INSENSITIVE);
+        Matcher matcher = pattern.matcher(line);
+        while (matcher.find()) {
+            return 1;
+        }
+        return 0;
+    }
+
+    public static void main(String[] args) throws Exception {
+        String ipAddress = "127.0.0.1";
+        pingCmd(ipAddress);
+        System.out.println(ping(ipAddress));
+        System.out.println(ping(ipAddress, 5, 5000));
+    }
+}