dylan revised this gist . Go to revision
1 file changed, 76 insertions
class.cpp(file created)
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| 1 | + | #include <iostream> | |
| 2 | + | #include <string> | |
| 3 | + | #include <nlohmann/json.hpp> // 引入 nlohmann/json 库 | |
| 4 | + | #include <QNetworkAccessManager> | |
| 5 | + | #include <QNetworkRequest> | |
| 6 | + | #include <QNetworkReply> | |
| 7 | + | #include <QObject> | |
| 8 | + | #include <QString> | |
| 9 | + | #include <QDebug> | |
| 10 | + | ||
| 11 | + | using json = nlohmann::json; | |
| 12 | + | ||
| 13 | + | class YourCppClass : public QObject { | |
| 14 | + | Q_OBJECT | |
| 15 | + | ||
| 16 | + | public: | |
| 17 | + | YourCppClass(); | |
| 18 | + | void fetchData(const QString &url); | |
| 19 | + | ||
| 20 | + | private slots: | |
| 21 | + | void onReplyFinished(QNetworkReply* reply); | |
| 22 | + | ||
| 23 | + | private: | |
| 24 | + | QNetworkAccessManager* networkManager; | |
| 25 | + | }; | |
| 26 | + | ||
| 27 | + | YourCppClass::YourCppClass() { | |
| 28 | + | networkManager = new QNetworkAccessManager(this); | |
| 29 | + | connect(networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(onReplyFinished(QNetworkReply*))); | |
| 30 | + | } | |
| 31 | + | ||
| 32 | + | void YourCppClass::fetchData(const QString &url) { | |
| 33 | + | QNetworkRequest request(QUrl(url)); | |
| 34 | + | networkManager->get(request); | |
| 35 | + | } | |
| 36 | + | ||
| 37 | + | void YourCppClass::onReplyFinished(QNetworkReply* reply) { | |
| 38 | + | if (reply->error() == QNetworkReply::NoError) { | |
| 39 | + | QByteArray responseData = reply->readAll(); | |
| 40 | + | QString responseStr(responseData); | |
| 41 | + | ||
| 42 | + | // 将 QByteArray 转换为 std::string 以供 nlohmann/json 使用 | |
| 43 | + | std::string responseDataStr = responseStr.toStdString(); | |
| 44 | + | ||
| 45 | + | try { | |
| 46 | + | // 使用 nlohmann/json 解析 JSON 数据 | |
| 47 | + | json jsonObj = json::parse(responseDataStr); | |
| 48 | + | ||
| 49 | + | // 解析出数据 (根据实际的 JSON 格式) | |
| 50 | + | std::string username = jsonObj["username"].get<std::string>(); | |
| 51 | + | std::string content = jsonObj["content"].get<std::string>(); | |
| 52 | + | ||
| 53 | + | qDebug() << "Username:" << QString::fromStdString(username); | |
| 54 | + | qDebug() << "Content:" << QString::fromStdString(content); | |
| 55 | + | ||
| 56 | + | } catch (json::parse_error& e) { | |
| 57 | + | qDebug() << "JSON parse error:" << e.what(); | |
| 58 | + | } | |
| 59 | + | } else { | |
| 60 | + | qDebug() << "Network error occurred:" << reply->errorString(); | |
| 61 | + | } | |
| 62 | + | ||
| 63 | + | reply->deleteLater(); | |
| 64 | + | } | |
| 65 | + | ||
| 66 | + | int main(int argc, char *argv[]) { | |
| 67 | + | // 简单示例程序初始化 | |
| 68 | + | QCoreApplication app(argc, argv); | |
| 69 | + | ||
| 70 | + | YourCppClass yourClass; | |
| 71 | + | yourClass.fetchData("http://example.com/api"); // 替换为实际的 API URL | |
| 72 | + | ||
| 73 | + | return app.exec(); | |
| 74 | + | } | |
| 75 | + | ||
| 76 | + | #include "YourCppClass.moc" | |
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