Node.js – dnsPromises.resolveAny() 方法
node.jsserver side programmingprogramming
dnsPromises.resolveAny() 方法使用 DNS 协议解析所有记录(这也称为 ANY 或 * 查询)。该承诺通过包含各种类型记录的数组得到解决。
| 类型 | 属性 |
|---|---|
| "A" | IPv4 地址 |
| "AAAA" | IPv6 地址 |
| "Any" | 任何记录 |
| MX | 邮件交换记录 |
| NAPTR | 名称权限指针记录 |
| NS | 名称服务器记录 |
| PTR | 指针记录 |
| SOA | 授权记录起始 |
| SRV | 服务记录 |
| TXT | 文本记录 |
| CNAME | 规范名称记录 |
语法
dnsPromises.resolveAny(hostname)
参数
hostname - 此参数接受要解析的主机名的输入。
示例 1
创建一个名为"resolveAny.js"的文件，并复制以下代码。创建文件后，使用命令"node resolveAny.js"运行此代码，如下例所示 −
// Node.js 程序演示
// dnsPromises.resolveAny() 方法
// 从 dns 模块访问 promises 对象
const dns = require('dns');
const dnsPromises = dns.promises;
// 调用 dnsPromises.resolveAny() 方法
dnsPromises.resolveAny('tutorialspoint.com').then((response) => {
console.log("records :", response);
});
输出
C:\home
ode>> node resolveAny.js records: [ {"address":"95.217.74.146","ttl":600,"type":"A"}, {"exchange":"alt2.aspmx.l.google.com","priority":5,"type":"MX"}, {"exchange":"alt1.aspmx.l.google.com","priority":5,"type":"MX"}, {"exchange":"aspmx.l.google.com","priority":1,"type":"MX"}, {"exchange":"alt4.aspmx.l.google.com","priority":10,"type":"MX"}, {"exchange":"alt3.aspmx.l.google.com","priority":10,"type":"MX"}, {"value":"pdns13.domaincontrol.com","type":"NS"}, {"value":"pdns14.domaincontrol.com","type":"NS"}, {"entries":["google-site-verification=-RNrP1jBNMarh7tMQEgXtlBVUi000DUph-h8H7uSaQ"],"type":"TXT"}, {"entries":["google-siteverification=S2zMIBQyc6WxHPiOdUzkWYvx_FKbf03xDOsI8OgG20A"],"type" :"TXT"}, {"entries":["v=spf1 ip4:116.202.79.150 include:_spf.google.com - all"],"type":"TXT"}, {"nsname":"pdns13.domaincontrol.com","hostmaster":"dns.jomax.net" ,"serial":2021051700,"refresh":28800,"retry":7200,"expire":604800 ,"minttl":600,"type":"SOA"} ]
示例 2
// Node.js 程序演示
// dnsPromises.resolveAny() 方法
// 从 dns 模块访问 promises 对象
const dns = require('dns');
const dnsPromises = dns.promises;
// 调用 dnsPromises.resolveAny() 方法
dnsPromises.resolveAny('localhost').then((response) => {
console.log("Address :", response);
});
输出
C:\home
ode>> node resolveAny.js Address : [ { address: '127.0.0.1', ttl: 0, type: 'A' }, { address: '::1', ttl: 0, type: 'AAAA' } ]
