icu.easyj.core.util.NetUtils Maven / Gradle / Ivy
/*
* Copyright 2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package icu.easyj.core.util;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import cn.hutool.core.io.IORuntimeException;
import static org.springframework.util.SocketUtils.PORT_RANGE_MAX;
import static org.springframework.util.SocketUtils.PORT_RANGE_MIN;
/**
* 网络工具类
*
* @author wangliang181230
*/
public abstract class NetUtils {
//region IP
/**
* @return 所有网卡IP列表
*/
public static List getIpList() {
List result = new ArrayList<>();
// 获取所有网卡,并依次获取IP
Enumeration netInterfaces;
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();
InetAddress ip;
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = netInterfaces.nextElement();
Enumeration addresses = ni.getInetAddresses();
while (addresses.hasMoreElements()) {
ip = addresses.nextElement();
if (!ip.isLoopbackAddress() && ip.getHostAddress().indexOf(':') == -1 && !"127.0.0.1".equals(ip.getHostAddress())) {
result.add(ip.getHostAddress());
}
}
}
} catch (Exception ignore) {
// do nothing
}
// 如果没有获取到,则获取默认的IP
if (result.isEmpty()) {
String ip = getIp();
result.add(ip);
}
return result;
}
/**
* 获取当前主机的 IP地址(多个网卡时,自动取第一个)
* 注:该方法有时候会获取到127.0.0.1,不建议使用,建议使用getInnerIp();
*
* @return 本机IP
*/
public static String getIp() {
try {
InetAddress addr = InetAddress.getLocalHost();
return addr.getHostAddress();
} catch (UnknownHostException e) {
throw new IORuntimeException("获取本机IP失败", e);
}
}
//endregion
//region Port
//region 随机端口号(Random Port)
/**
* 端口号范围字符串
*/
public static final String PORT_RANGE = PORT_RANGE_MIN + "," + PORT_RANGE_MAX;
/**
* 随机生成端口号
*
* @param startPort 起始端口号
* @param endPort 截止端口号
* @return 随机端口号
*/
public static int randomPort(int startPort, int endPort) {
if (endPort > PORT_RANGE_MAX || endPort < PORT_RANGE_MIN) {
endPort = PORT_RANGE_MAX;
}
if (startPort < PORT_RANGE_MIN) {
startPort = PORT_RANGE_MIN;
}
return org.apache.commons.lang3.RandomUtils.nextInt(startPort, endPort);
}
/**
* 随机生成端口号
*
* @param startPort 起始端口号
* @return 随机端口号
*/
public static int randomPort(int startPort) {
return randomPort(startPort, PORT_RANGE_MAX);
}
/**
* 随机生成端口号
*
* @return 随机端口号
*/
public static int randomPort() {
return randomPort(PORT_RANGE_MIN, PORT_RANGE_MAX);
}
//endregion
//endregion
}