feat: 使用QHostInfo来获取域名的服务器IP

QtQHostInfoEx/ExQHostInfo.cpp

@@ -0,0 +1,89 @@
+#include "ExQHostInfo.h"
+#include "ui_ExQHostInfo.h"
+
+#include <QHostInfo>
+#include <QNetworkInterface>
+
+ExQHostInfo::ExQHostInfo(QWidget *parent) :
+    QWidget(parent),
+    ui(new Ui::ExQHostInfo)
+{
+    ui->setupUi(this);
+
+    setWindowTitle("QHostInfo/QNetworkInterface查询主机网络状态：");
+}
+
+ExQHostInfo::~ExQHostInfo()
+{
+    delete ui;
+}
+
+//通过协议类型返回协议名称
+QString ExQHostInfo::protocolName(QAbstractSocket::NetworkLayerProtocol protocol)
+{
+    switch (protocol) {
+    case QAbstractSocket::IPv4Protocol:
+        return "IPv4 Protocol";
+    case QAbstractSocket::IPv6Protocol:
+        return "IPv6 Protocol";
+    case QAbstractSocket::AnyIPProtocol:
+        return "Any IP Protocol";
+    default:
+        return "Unknow Network Layer Protocol";
+    }
+}
+
+
+void ExQHostInfo::on_btnGetHostInfo_clicked()
+{
+
+}
+
+void ExQHostInfo::on_btnAllAddresses_clicked()
+{
+
+}
+
+void ExQHostInfo::on_btnAllInterfaces_clicked()
+{
+
+}
+
+void ExQHostInfo::on_btnFindIP_clicked()
+{
+    QString hostName = ui->lineEdit->text();  //域名
+    ui->plainTextEdit->appendPlainText("正在查找域名的服务器的主机信息：" + hostName);
+    QHostInfo::lookupHost(hostName, this, SLOT(onLookedUpHostInfo(QHostInfo)));
+}
+
+void ExQHostInfo::on_btnClean_clicked()
+{
+    ui->plainTextEdit->clear();
+}
+
+//查询主机信息的槽函数
+void ExQHostInfo::onLookedUpHostInfo(const QHostInfo &host)
+{
+    QList<QHostAddress> list = host.addresses();
+
+    if (list.isEmpty())
+        return;
+
+    for (int i = 0; i < list.count(); i++) {
+        QHostAddress host = list.at(i);
+        bool bIpv4 = ui->checkBox->isChecked();  //只显示IPv4
+
+        if (bIpv4) {
+            bIpv4 = QAbstractSocket::IPv4Protocol == host.protocol();
+        } else {
+            bIpv4 = false;
+        }
+
+        if (bIpv4) {
+            ui->plainTextEdit->appendPlainText("协议：" + protocolName(host.protocol()));
+            ui->plainTextEdit->appendPlainText(host.toString());
+        }
+
+    }
+}
+