【背景】 在一次问题排查过程中，发现偶现调用"InetAddress.getByName()"无法通过域名解析到IP（实际在容器中都能正确解析到），因此怀疑和容器的DNS解析有问题。...而java中InetAddress类的getByName、getByAddress、getAllByName等方法，本质上是调用了系统函数getaddrinfo或gethostbyname来进行主机名/...相关代码如下所示： // InetAddress.java public static InetAddress getByName(String host) throws UnknownHostException
js端加密（使用sm-crypto） 引入依赖： const sm4 = require('sm-crypto').sm4 const sm2 = require('sm-crypto'...artifactId>hutool-all 5.5.8 sm2生成密钥 由于js...NoSuchAlgorithmException { // 1. bc库原始写法 X9ECParameters x9ECParameters = GMNamedCurves.getByName...secretKey.getEncoded(); String encodeHexStr = HexUtil.encodeHexStr(encoded); sm2解密 // JS...使用bc库解密 X9ECParameters x9ECParameters = GMNamedCurves.getByName("sm2p256v1"); ECDomainParameters
二、getByName方法 这个方法是InetAddress类最常用的方法。它可以通过指定域名从DNS中得到相应的IP地址。...getByName一个String类型参数，可以通过这个参数指定远程主机的域名，它的定义如下： public static InetAddress getByName(String host) throws... UnknownHostException 如果host所指的域名对应多个IP，getByName返回第一个IP.如果本机名已知，可以使用getByName方法来代替getLocalHost...IP地址是否存在，getByName方法都会返回这个IP地址（因此getByName并不验证IP地址的正确性）。...事实上，getByName的确是这样实现的，getByName的实现代码如下： public static InetAddress getByName(String host) throws UnknownHostException
获取InetAddress类的方式： * 1）getByName(String host)：通过主机（IP地址）获取（掌握） * 2）getLocalHost()：获取本机的InetAddress对象（...InetAddressTest { @Test public void test2() { try { InetAddress inet = InetAddress.getByName...("192.168.10.1"); System.out.println(addr1); InetAddress addr2 = InetAddress.getByName("www.baidu.com..."); System.out.println(addr2); //InetAddress addr3 = InetAddress.getByName("127.0.0.1"); InetAddress...addr3 = InetAddress.getByName("localhost"); System.out.println(addr3); InetAddress addr4 = InetAddress.getLocalHost
= 'HTC'", unless = "#result==null") @Override public Product getByName(String name) {...->" + service.getByName("IPhone")); logger.info("HTC ->" + service.getByName("HTC"));...logger.info("HTC ->" + service.getByName("HTC")); logger.info("HTC ->" + service.getByName("HTC...(); logger.info("IPhone [after refresh]->" + service.getByName("IPhone")); logger.info...("IPhone [after refresh]->" + service.getByName("IPhone")); logger.info("IPhone [after refresh
allEntries为true，则删除缓存中所有的对象 */ @Cacheable(cacheNames = "car", key = "#name") public Car getByName...* 测试第二次从缓存中查询 */ @Test public void test1() { System.out.println(carService.getByName...测试不同方法查询从同一缓存中查询 */ @Test public void test2() { System.out.println(carService.getByName...new Car("yawn", LocalTime.now()))); Thread.sleep(998); System.out.println(carService.getByName...new Car("yawn", LocalTime.now()))); Thread.sleep(998); System.out.println(carService.getByName
System.out.println("当前主机名： " + addr.getHostName()); System.out.println(); InetAddress addr1 = InetAddress.getByName...System.out.println("百度服务器地址： " + addr1); System.out.println(); InetAddress address = InetAddress.getByName...注意：在使用InetAddress.getByName();方法时，如果getByName里面名字写错，将会报java.net.UnknownHostException:错误，错误如下图： 发布者：全栈程序员栈长
InetAddress ia = InetAddress.getByName("192.168.199.217"); System.out.println(ia); InetAddress...ia2 = InetAddress.getByName("localhost");//localhost指代的是本机的ip地址 System.out.println(ia2);...InetAddress ia3 = InetAddress.getByName("127.0.0.1");//127.0.0.1指代的是本机的ip地址 System.out.println...(ia3); InetAddress ia4 = InetAddress.getByName("LAPTOP-LANSON");//封装计算机名 System.out.println...(ia4); InetAddress ia5 = InetAddress.getByName("www.baidu.com");//封装域名 System.out.println
java.net.UnknownHostException; 5 6 /* 7 * 8 * 看InetAddress类的成员方法： 9 * public static InetAddress getByName...static void main(String[] args) throws UnknownHostException { 13 // public static InetAddress getByName...(String host) 14 // InetAddress address = InetAddress.getByName("DESKTOP-TEE3ASS"); 15...InetAddress address = InetAddress.getByName("192.168.1.102"); 16 17 // 通过IP地址对象获取：主机名、IP地址 18
InetAddress的用法 下面这个程序利用InetAddress.getByName()来得到你的和百度IP地址。...TestMark_to_win { public static void main(String[] args) throws Exception { /* static InetAddress getByName...Determines the IP address of a host, given the host's name. */ InetAddress a = InetAddress.getByName...a.getHostAddress()); System.out.println(a.getHostName()); InetAddress b = InetAddress.getByName
settings(settings).build(); client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName...settings(settings).build(); client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName...settings(settings).build(); client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName...settings(settings).build(); client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName...settings(settings).build(); client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName
二.常用方法: 常用方法 static InetAddress getByName(String host)—-在给定主机名的情况下确定主机的IP地址 static InetAddress getLocalHost...static void main(String[] args) throws Exception { InetAddress inetAddress = InetAddress.getByName...static void main(String[] args) throws Exception { InetAddress inetAddress = InetAddress.getByName...static void main(String[] args) throws Exception { InetAddress inetAddress = InetAddress.getByName
对于InetAddress，三个方法:getLocalHost()、getByName()以及getAllByName()可以用来创建InetAddress的实例。...getByName()方法返回一个传给它的主机名的InetAddress。 如果这些方法不能解析主机名，它们引发一个UnknownHostException异常。...(String host) static InetAddress getLocalHost()在这些静态方法中，最为常用的应该是getByName(String host)方法，只需要传入目标主机的名字...InetAddress address=InetAddress.getByName(“www.baidu.com”); 注意到这些方法可能会抛出的异常。...所以需要写如下的代码： try{ InetAddress address=InetAddress.getByName(“www.baidu.com”); System.out.println(address
InetAddress类的对象用于IP地址和域名，该类提供以下方法： getByName(String s)：获得一个InetAddress 类的对象，该对象中含有主机的IP地址和域名，该对象用如下格式表示它包含的信息...InetAddress address=InetAddress.getByName(“141.146.8.66”); System.out.println(address.getHostName())...;//需要访问DNS服务器才能得到域名 InetAddress address=InetAddress.getByName(“1.2.3.4”);//IP地址不存在 System.out.println...(address.getHostName());//直接返回IP地址 用域名作为getByName和getAllByName方法的参数得到的InetAddress对象，该对象会得到这个域名，当调用...InetAddress address=InetAddress.getByName(“www.zalou.cn”); System.out.println(address.getHostName())
好接着DatagramPacket sendPscket = new DatagramPacket(by, by.length,InetAddress.getByName("192.168.32.1")...,8080); 好说一下这个InetAddress.getByName("192.168.32.1")。...InetAddress i = InetAddress.getLocalHost(); System.out.println(i.toString());这两句就可以打印出本机的名称和ip地址 我们用getByName...InetAddress ip = InetAddress.getByName("192.168.32.1"); DatagramPacket sendPscket = new DatagramPacket...ip = InetAddress.getLocalHost();//如果是自己电脑测试可以这样得到本机地址，也可以自己查自己的ip地址 //InetAddress ip = InetAddress.getByName
storePassword = "xhkjedu" } } buildTypes { val signConfig=signingConfigs.getByName...("keystore") getByName("release") { isMinifyEnabled = false proguardFiles..."proguard-rules.pro" ) signingConfig=signConfig } getByName
struct { Title string Body string } var database []Item // 根据title名称从database数组中获取对应的Item对象 func GetByName...EditItem("third", Item{"fourth", "a new item"}) fmt.Println("fourth database: ", database) x := GetByName...("fourth") y := GetByName("first") fmt.Println(x, y) } 执行命令go run main,go得出如下的输出： ?...(a *API) GetDB(empty string, reply *[]Item) error { *reply = database return nil } func (a *API) GetByName...("fourth") // y := GetByName("first") // fmt.Println(x, y) } go rpc客户端client/client.go代码如下： package
).set("你的密码"); ModelControllerClient client = ModelControllerClient.Factory.create(InetAddress.getByName...ModelControllerClient client = ModelControllerClient.Factory.create( InetAddress.getByName...; ModelControllerClient client = ModelControllerClient.Factory.create( InetAddress.getByName...client = null; try { client = ModelControllerClient.Factory.create(InetAddress.getByName
InetSocketTransportAddress inetSocketTransportAddress = new InetSocketTransportAddress(InetAddress.getByName...InetSocketTransportAddress inetSocketTransportAddress2 = new InetSocketTransportAddress(InetAddress.getByName...InetSocketTransportAddress inetSocketTransportAddress3 = new InetSocketTransportAddress(InetAddress.getByName
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