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Java 详解如何获取网络接口信息

作者：剑客阿良_ALiang

读万卷书不如行万里路，只学书上的理论是远远不够的，只有在实践中才能获得能力的提升，本篇文章手把手带你用Java获取网络接口的信息,大家可以在过程中查缺补漏，提升水平

前言

查看本机的网络接口信息，本文有详细的介绍哦。

代码

不废话，上代码。

package com.hy.csdn.tools;
 
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
 
/**
 * @Program: hy-utils @ClassName: StuNetworkInterface @Author: huyi @Date: 2020-09-20
 * 23:48 @Description: 网络接口 @Version: V1.0
 */
public class NetworkInterfaceUtil {
  public static void main(String[] args) {
    try {
      Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
      while (networkInterfaces.hasMoreElements()) {
        NetworkInterface networkInterface = networkInterfaces.nextElement();
        System.out.println("getName获得网络设备现实名称=" + networkInterface.getName());
        System.out.println("getDisplayName获得网络设备现实名称=" + networkInterface.getDisplayName());
        System.out.println("getIndex获得网络接口的索引=" + networkInterface.getIndex());
        System.out.println("isUp是否已经开启并运行=" + networkInterface.isUp());
        System.out.println("isLoopback是否为回调接口=" + networkInterface.isLoopback());
        System.out.println("getMTU获得最大传输单元=" + networkInterface.getMTU());
        Enumeration<InetAddress> enumerations = networkInterface.getInetAddresses();
        while (enumerations.hasMoreElements()) {
          InetAddress inetAddress = enumerations.nextElement();
          System.out.println("获取此IP地址的完全限定域名=" + inetAddress.getCanonicalHostName());
          System.out.println("获取此IP地址的主机名=" + inetAddress.getHostName());
          System.out.println("获取此IP地址的字符串=" + inetAddress.getHostAddress());
          System.out.print("getAddress返回此InetAddress对象的原始IP地址=");
          byte[] addressByte = inetAddress.getAddress();
          for (byte b : addressByte) {
            System.out.print(b + " ");
          }
          System.out.println();
        }
        System.out.println();
      }
    } catch (SocketException e) {
      e.printStackTrace();
    }
  }
}

看看执行结果。

/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/bin/java -Dfile.encoding=UTF-8 -classpath /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/lib/tools.jar:/Users/huyi/idea/csdn/target/classes:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-starter-web/2.5.5/spring-boot-starter-web-2.5.5.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-starter/2.5.5/spring-boot-starter-2.5.5.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.5.5/spring-boot-starter-logging-2.5.5.jar:/Users/huyi/.m2/repository/ch/qos/logback/logback-classic/1.2.6/logback-classic-1.2.6.jar:/Users/huyi/.m2/repository/ch/qos/logback/logback-core/1.2.6/logback-core-1.2.6.jar:/Users/huyi/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.14.1/log4j-to-slf4j-2.14.1.jar:/Users/huyi/.m2/repository/org/apache/logging/log4j/log4j-api/2.14.1/log4j-api-2.14.1.jar:/Users/huyi/.m2/repository/org/slf4j/jul-to-slf4j/1.7.32/jul-to-slf4j-1.7.32.jar:/Users/huyi/.m2/repository/jakarta/annotation/jakarta.annotation-api/1.3.5/jakarta.annotation-api-1.3.5.jar:/Users/huyi/.m2/repository/org/yaml/snakeyaml/1.28/snakeyaml-1.28.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-starter-json/2.5.5/spring-boot-starter-json-2.5.5.jar:/Users/huyi/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.12.5/jackson-databind-2.12.5.jar:/Users/huyi/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.12.5/jackson-annotations-2.12.5.jar:/Users/huyi/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.12.5/jackson-core-2.12.5.jar:/Users/huyi/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jdk8/2.12.5/jackson-datatype-jdk8-2.12.5.jar:/Users/huyi/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jsr310/2.12.5/jackson-datatype-jsr310-2.12.5.jar:/Users/huyi/.m2/repository/com/fasterxml/jackson/module/jackson-module-parameter-names/2.12.5/jackson-module-parameter-names-2.12.5.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/2.5.5/spring-boot-starter-tomcat-2.5.5.jar:/Users/huyi/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.53/tomcat-embed-core-9.0.53.jar:/Users/huyi/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/9.0.53/tomcat-embed-el-9.0.53.jar:/Users/huyi/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/9.0.53/tomcat-embed-websocket-9.0.53.jar:/Users/huyi/.m2/repository/org/springframework/spring-web/5.3.10/spring-web-5.3.10.jar:/Users/huyi/.m2/repository/org/springframework/spring-beans/5.3.10/spring-beans-5.3.10.jar:/Users/huyi/.m2/repository/org/springframework/spring-webmvc/5.3.10/spring-webmvc-5.3.10.jar:/Users/huyi/.m2/repository/org/springframework/spring-aop/5.3.10/spring-aop-5.3.10.jar:/Users/huyi/.m2/repository/org/springframework/spring-context/5.3.10/spring-context-5.3.10.jar:/Users/huyi/.m2/repository/org/springframework/spring-expression/5.3.10/spring-expression-5.3.10.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-devtools/2.5.5/spring-boot-devtools-2.5.5.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot/2.5.5/spring-boot-2.5.5.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.5.5/spring-boot-autoconfigure-2.5.5.jar:/Users/huyi/.m2/repository/org/springframework/boot/spring-boot-configuration-processor/2.5.5/spring-boot-configuration-processor-2.5.5.jar:/Users/huyi/.m2/repository/org/projectlombok/lombok/1.18.20/lombok-1.18.20.jar:/Users/huyi/.m2/repository/org/slf4j/slf4j-api/1.7.32/slf4j-api-1.7.32.jar:/Users/huyi/.m2/repository/org/springframework/spring-core/5.3.10/spring-core-5.3.10.jar:/Users/huyi/.m2/repository/org/springframework/spring-jcl/5.3.10/spring-jcl-5.3.10.jar:/Users/huyi/.m2/repository/com/aliyun/oss/aliyun-sdk-oss/3.10.2/aliyun-sdk-oss-3.10.2.jar:/Users/huyi/.m2/repository/org/apache/httpcomponents/httpclient/4.5.13/httpclient-4.5.13.jar:/Users/huyi/.m2/repository/org/apache/httpcomponents/httpcore/4.4.14/httpcore-4.4.14.jar:/Users/huyi/.m2/repository/commons-codec/commons-codec/1.15/commons-codec-1.15.jar:/Users/huyi/.m2/repository/org/jdom/jdom2/2.0.6/jdom2-2.0.6.jar:/Users/huyi/.m2/repository/org/codehaus/jettison/jettison/1.1/jettison-1.1.jar:/Users/huyi/.m2/repository/stax/stax-api/1.0.1/stax-api-1.0.1.jar:/Users/huyi/.m2/repository/com/aliyun/aliyun-java-sdk-core/3.4.0/aliyun-java-sdk-core-3.4.0.jar:/Users/huyi/.m2/repository/com/aliyun/aliyun-java-sdk-ram/3.0.0/aliyun-java-sdk-ram-3.0.0.jar:/Users/huyi/.m2/repository/com/aliyun/aliyun-java-sdk-sts/3.0.0/aliyun-java-sdk-sts-3.0.0.jar:/Users/huyi/.m2/repository/com/aliyun/aliyun-java-sdk-ecs/4.2.0/aliyun-java-sdk-ecs-4.2.0.jar:/Users/huyi/.m2/repository/com/aliyun/aliyun-java-sdk-kms/2.7.0/aliyun-java-sdk-kms-2.7.0.jar:/Users/huyi/.m2/repository/com/google/code/gson/gson/2.8.8/gson-2.8.8.jar:/Users/huyi/.m2/repository/cn/hutool/hutool-all/5.7.15/hutool-all-5.7.15.jar com.hy.csdn.tools.NetworkInterfaceUtil
getName获得网络设备现实名称=utun1
getDisplayName获得网络设备现实名称=utun1
getIndex获得网络接口的索引=12
isUp是否已经开启并运行=true
isLoopback是否为回调接口=false
getMTU获得最大传输单元=2000
获取此IP地址的完全限定域名=fe80:0:0:0:63a3:85eb:e7ec:770d%utun1
获取此IP地址的主机名=fe80:0:0:0:63a3:85eb:e7ec:770d%utun1
获取此IP地址的字符串=fe80:0:0:0:63a3:85eb:e7ec:770d%utun1
getAddress返回此InetAddress对象的原始IP地址=-2 -128 0 0 0 0 0 0 99 -93 -123 -21 -25 -20 119 13

getName获得网络设备现实名称=utun0
getDisplayName获得网络设备现实名称=utun0
getIndex获得网络接口的索引=11
isUp是否已经开启并运行=true
isLoopback是否为回调接口=false
getMTU获得最大传输单元=1380
获取此IP地址的完全限定域名=fe80:0:0:0:3b2:454d:40f6:fa91%utun0
获取此IP地址的主机名=fe80:0:0:0:3b2:454d:40f6:fa91%utun0
获取此IP地址的字符串=fe80:0:0:0:3b2:454d:40f6:fa91%utun0
getAddress返回此InetAddress对象的原始IP地址=-2 -128 0 0 0 0 0 0 3 -78 69 77 64 -10 -6 -111

getName获得网络设备现实名称=llw0
getDisplayName获得网络设备现实名称=llw0
getIndex获得网络接口的索引=10
isUp是否已经开启并运行=true
isLoopback是否为回调接口=false
getMTU获得最大传输单元=1500
获取此IP地址的完全限定域名=fe80:0:0:0:1c5b:adff:fec2:41ef%llw0
获取此IP地址的主机名=fe80:0:0:0:1c5b:adff:fec2:41ef%llw0
获取此IP地址的字符串=fe80:0:0:0:1c5b:adff:fec2:41ef%llw0
getAddress返回此InetAddress对象的原始IP地址=-2 -128 0 0 0 0 0 0 28 91 -83 -1 -2 -62 65 -17

getName获得网络设备现实名称=awdl0
getDisplayName获得网络设备现实名称=awdl0
getIndex获得网络接口的索引=9
isUp是否已经开启并运行=true
isLoopback是否为回调接口=false
getMTU获得最大传输单元=1484
获取此IP地址的完全限定域名=fe80:0:0:0:1c5b:adff:fec2:41ef%awdl0
获取此IP地址的主机名=fe80:0:0:0:1c5b:adff:fec2:41ef%awdl0
获取此IP地址的字符串=fe80:0:0:0:1c5b:adff:fec2:41ef%awdl0
getAddress返回此InetAddress对象的原始IP地址=-2 -128 0 0 0 0 0 0 28 91 -83 -1 -2 -62 65 -17

getName获得网络设备现实名称=en0
getDisplayName获得网络设备现实名称=en0
getIndex获得网络接口的索引=4
isUp是否已经开启并运行=true
isLoopback是否为回调接口=false
getMTU获得最大传输单元=1500
获取此IP地址的完全限定域名=fe80:0:0:0:df:d7c9:cd1:81e3%en0
获取此IP地址的主机名=fe80:0:0:0:df:d7c9:cd1:81e3%en0
获取此IP地址的字符串=fe80:0:0:0:df:d7c9:cd1:81e3%en0
getAddress返回此InetAddress对象的原始IP地址=-2 -128 0 0 0 0 0 0 0 -33 -41 -55 12 -47 -127 -29
获取此IP地址的完全限定域名=192.168.3.107
获取此IP地址的主机名=192.168.3.107
获取此IP地址的字符串=192.168.3.107
getAddress返回此InetAddress对象的原始IP地址=-64 -88 3 107

getName获得网络设备现实名称=lo0
getDisplayName获得网络设备现实名称=lo0
getIndex获得网络接口的索引=1
isUp是否已经开启并运行=true
isLoopback是否为回调接口=true
getMTU获得最大传输单元=16384
获取此IP地址的完全限定域名=fe80:0:0:0:0:0:0:1%lo0
获取此IP地址的主机名=fe80:0:0:0:0:0:0:1%lo0
获取此IP地址的字符串=fe80:0:0:0:0:0:0:1%lo0
getAddress返回此InetAddress对象的原始IP地址=-2 -128 0 0 0 0 0 0 0 0 0 0 0 0 0 1
获取此IP地址的完全限定域名=localhost
获取此IP地址的主机名=localhost
获取此IP地址的字符串=0:0:0:0:0:0:0:1
getAddress返回此InetAddress对象的原始IP地址=0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
获取此IP地址的完全限定域名=localhost
获取此IP地址的主机名=localhost
获取此IP地址的字符串=127.0.0.1
getAddress返回此InetAddress对象的原始IP地址=127 0 0 1


Process finished with exit code 0

总结

认定一件事，即使拿出十分力气都无法完成，也要拿出十二分力气去努力。

如果本文对你有用的话，别吝啬你的赞，Come on。

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