起因是公司一个springboot项目启动类打印了本机IP地址加端口号，方便访问项目页面，但是发现打印出来的不是“无线局域网”的ip而是“以太网适配器”ip，如下图所示

这样就导致后续本地起项目连接xxl-job注册节点的时候因为不在同个局域网下ping不通出问题，所以需要解决一下。

一、直接获取本机IP（会受到虚拟机干扰）

<code>public static String getInterIP1() throws Exception {

return InetAddress.getLocalHost().getHostAddress();

}

二、获取本机IP（排除虚拟机干扰）

public static InetAddress getLocalHostLANAddress() throws UnknownHostException {

try {

InetAddress candidateAddress = null;

// 遍历所有的网络接口

for (Enumeration ifaces = NetworkInterface.getNetworkInterfaces(); ifaces.hasMoreElements();) {

NetworkInterface iface = (NetworkInterface) ifaces.nextElement();

// 在所有的接口下再遍历IP

for (Enumeration inetAddrs = iface.getInetAddresses(); inetAddrs.hasMoreElements();) {

InetAddress inetAddr = (InetAddress) inetAddrs.nextElement();

if (!inetAddr.isLoopbackAddress()) {// 排除loopback类型地址

if (inetAddr.isSiteLocalAddress()) {

// 如果是site-local地址，就是它了

return inetAddr;

} else if (candidateAddress == null) {

// site-local类型的地址未被发现，先记录候选地址

candidateAddress = inetAddr;

}

}

}

}

if (candidateAddress != null) {

return candidateAddress;

}

// 如果没有发现 non-loopback地址.只能用最次选的方案

InetAddress jdkSuppliedAddress = InetAddress.getLocalHost();

if (jdkSuppliedAddress == null) {

throw new UnknownHostException("The JDK InetAddress.getLocalHost() method unexpectedly returned null.");

}

return jdkSuppliedAddress;

} catch (Exception e) {

UnknownHostException unknownHostException = new UnknownHostException(

"Failed to determine LAN address: " + e);

unknownHostException.initCause(e);

throw unknownHostException;

}

}

三、获取本机公网IP

public static String getOutIP() {

try {

URL whatismyip = new URL("http://checkip.amazonaws.com");

BufferedReader in = new BufferedReader(new InputStreamReader(whatismyip.openStream()));

String ip = in.readLine();

return ip;

} catch (Exception e) {}

return "";

}

四、测试

public class IpTest {

public static void main(String[] args) throws Exception {

System.out.println("获取本机ip: " + getInterIP1());

// System.out.println("getInterIP2: " + getInterIP2());

System.out.println("获取本机ip（排除虚拟机干扰）: " + String.valueOf(getLocalHostLANAddress()).substring(1));

// System.out.println("getOutIPV4: " + getOutIPV4());

System.out.println("获取本机公网ip: " + getOutIP());

}

public static String getInterIP1() throws Exception {

return InetAddress.getLocalHost().getHostAddress();

}

public static InetAddress getLocalHostLANAddress() throws UnknownHostException {

try {

InetAddress candidateAddress = null;

// 遍历所有的网络接口

for (Enumeration ifaces = NetworkInterface.getNetworkInterfaces(); ifaces.hasMoreElements();) {

NetworkInterface iface = (NetworkInterface) ifaces.nextElement();

// 在所有的接口下再遍历IP

for (Enumeration inetAddrs = iface.getInetAddresses(); inetAddrs.hasMoreElements();) {

InetAddress inetAddr = (InetAddress) inetAddrs.nextElement();

if (!inetAddr.isLoopbackAddress()) {// 排除loopback类型地址

if (inetAddr.isSiteLocalAddress()) {

// 如果是site-local地址，就是它了

return inetAddr;

} else if (candidateAddress == null) {

// site-local类型的地址未被发现，先记录候选地址

candidateAddress = inetAddr;

}

}

}

}

if (candidateAddress != null) {

return candidateAddress;

}

// 如果没有发现 non-loopback地址.只能用最次选的方案

InetAddress jdkSuppliedAddress = InetAddress.getLocalHost();

if (jdkSuppliedAddress == null) {

throw new UnknownHostException("The JDK InetAddress.getLocalHost() method unexpectedly returned null.");

}

return jdkSuppliedAddress;

} catch (Exception e) {

UnknownHostException unknownHostException = new UnknownHostException(

"Failed to determine LAN address: " + e);

unknownHostException.initCause(e);

throw unknownHostException;

}

}

public static String getOutIP() {

try {

URL whatismyip = new URL("http://checkip.amazonaws.com");

BufferedReader in = new BufferedReader(new InputStreamReader(whatismyip.openStream()));

String ip = in.readLine();

return ip;

// System.out.println("Public IP Address: " + ip);

} catch (Exception e) {

// System.out.println("Error occurred: " + e.getMessage());

}

return "";

}

}

获取本机ip: 172.17.16.1

获取本机ip（排除虚拟机干扰）: 192.168.100.100

获取本机公网ip: 14.145.43.147

这里打印出来的便对应上前言命令行截图里的ip信息，然后公网ip对应的是百度搜索ip查到的公网ip地址 

五、手动禁用虚拟机排除干扰

除了用代码逻辑排除虚拟机干扰，我们也可以直接禁用电脑的虚拟机适配器。

步骤：

win+R devmgmt.msc 打开设备管理器找到网络适配器-Hyper-V Virtual 开头的  右键禁用

此时win+R cmd 输入ipconfig，可以看到已经没有虚拟机ip了

此时java使用

<code>InetAddress.getLocalHost().getHostAddress()

也可以获取到192.168开头的wifi地址了