QT 调用API接口-Get

1、mainwindow.h文件写入引用文件

#include <qdebug.h>
#include <qnetworkaccessmanager.h>
#include <qnetworkrequest.h>
#include <qnetworkreply.h>
#include <qurl.h>

定义私有变量

QNetworkAccessManager *manager;

定义槽函数

private slots:void CallApi();void onFinished(QNetworkReply *reply);

2、界面拖拽按钮，修改文本 调用API接口

3、mainwindow.cpp文件
初始化写如下代码：

connect(ui->btnApi,&QPushButton::clicked,this,&MainWindow::CallApi);//绑定按钮信号和槽
this->manager = new QNetworkAccessManager(this);//初始化
connect(this->manager,&QNetworkAccessManager::finished,this,&MainWindow::onFinished);//绑定接口的完成函数

添加槽函数

void MainWindow::onFinished(QNetworkReply *replay)
{if(replay->error()){qDebug() << "Error:"<<replay->errorString();}else{QString response = replay->readAll();qDebug() << "Response:"<<response;}replay->deleteLater();
}void MainWindow::CallApi()
{QUrl url("http://localhost:5001/Coil/GetList");QNetworkRequest request(url);QNetworkReply *replay = manager->get(request);qDebug() << "Request sent,waiting for response...";
}

url替换为需要请求的api接口即可。