获取服务器IP地址BUG修改（使用容器网络时可以获取IP，改成HOST网络模式获取不到）

修改了这个BUG，现在都可以获取到。

xxl-job-admin/src/main/java/com/xxl/job/admin/core/id/HeartBeat.java

@@ -1,28 +1,29 @@
 package com.xxl.job.admin.core.id;
 
-import com.xxl.job.admin.core.id.service.MachineService;
-import com.xxl.job.admin.core.model.XxlJobMachine;
-import com.xxl.job.admin.core.util.MachineUtils;
+import java.util.Date;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 
-import java.util.Date;
+import com.xxl.job.admin.core.id.service.MachineService;
+import com.xxl.job.admin.core.model.XxlJobMachine;
+import com.xxl.job.admin.core.util.MachineUtils;
 
 @Component
 @EnableScheduling
 public class HeartBeat {
 
-    @Autowired
-    private MachineService machineService;
+	@Autowired
+	private MachineService machineService;
 
-    @Scheduled(fixedDelay = 10000)
-    public void checkMachineSurvive(){
-        String machineIp = MachineUtils.get();
-        XxlJobMachine xxlJobMachine = machineService.selectByMachineIp(machineIp);
-        if(xxlJobMachine != null){
-            machineService.update(machineIp,new Date());
-        }
-    }
+	@Scheduled(fixedDelay = 10000)
+	public void checkMachineSurvive() {
+		String machineIp = MachineUtils.getIP();
+		XxlJobMachine xxlJobMachine = machineService.selectByMachineIp(machineIp);
+		if (xxlJobMachine != null) {
+			machineService.update(machineIp, new Date());
+		}
+	}
 }

xxl-job-admin/src/main/java/com/xxl/job/admin/core/id/impl/MachineServiceImpl.java

@@ -43,15 +43,15 @@ public class MachineServiceImpl implements MachineService {
 
     @Override
     public Integer getInitMachineId() {
-        XxlJobMachine xxlJobMachine = selectByMachineIp(MachineUtils.get());
+        XxlJobMachine xxlJobMachine = selectByMachineIp(MachineUtils.getIP());
         Date nowDate = new Date();
         int machineId = -1;
         if(xxlJobMachine != null){
-            update(MachineUtils.get(),nowDate);
+            update(MachineUtils.getIP(),nowDate);
             machineId =  xxlJobMachine.getMachineId();
         }else{
             xxlJobMachine = new XxlJobMachine();
-            xxlJobMachine.setMachineIp(MachineUtils.get());
+            xxlJobMachine.setMachineIp(MachineUtils.getIP());
             xxlJobMachine.setAddTime(nowDate);
             xxlJobMachine.setHeartLastTime(nowDate);
             Random random = new Random();

xxl-job-admin/src/main/java/com/xxl/job/admin/core/util/MachineUtils.java

@@ -1,27 +1,56 @@
 package com.xxl.job.admin.core.util;
 
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.util.Enumeration;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-
+/**
+ * 机器工具类
+ * @author 单红宇
+ *
+ */
 public class MachineUtils {
 
-    private static final Logger logger = LoggerFactory.getLogger(MachineUtils.class);
-
-    private static String machineIp = null;
-
-    public static String get() {
-        if(machineIp == null){
-            try {
-                //获取本机IP地址
-                machineIp = InetAddress.getLocalHost().getHostAddress();
-            } catch (UnknownHostException e) {
-                logger.error("get host error：",e);
-                throw new RuntimeException("get host error");
-            }
-        }
-        return machineIp;
-    }
+	private static final Logger logger = LoggerFactory.getLogger(MachineUtils.class);
+
+	private static String machineIp = null;
+
+	public static String getIP() {
+		if (machineIp == null) {
+			String ipv4 = getInet4Address();
+			logger.info("ipv4={}", ipv4);
+			machineIp = ipv4;
+		}
+		return machineIp;
+	}
+
+	/**
+	 * 获取服务器Ipv4地址
+	 */
+	public static String getInet4Address() {
+		Enumeration<NetworkInterface> nis;
+		String ip = null;
+		try {
+			nis = NetworkInterface.getNetworkInterfaces();
+			for (; nis.hasMoreElements();) {
+				NetworkInterface ni = nis.nextElement();
+				Enumeration<InetAddress> ias = ni.getInetAddresses();
+				for (; ias.hasMoreElements();) {
+					InetAddress ia = ias.nextElement();
+					// ia instanceof Inet6Address && !ia.equals("")
+					if (ia instanceof Inet4Address && !ia.getHostAddress().equals("127.0.0.1")) {
+						ip = ia.getHostAddress();
+					}
+				}
+			}
+		} catch (Exception e) {
+			logger.error("getServerIpAddress执行出错：" + e.getMessage() + "," + e.getCause());
+		}
+		return ip;
+	}
+
 }