C++怎么使用Drogon框架开发Web应用_C++高性能的异步Web服务器框架入门

#include <drogon/drogon.h>

int main() {
    // 设置监听地址和端口
    drogon::app().getListener("0.0.0.0", 8080);
    // 定义根路径的处理函数
    drogon::app().registerHandler(
        "/",
        [](const drogon::HttpRequestPtr& req,
           std::function<void (const drogon::HttpResponsePtr&)>& callback) {
            auto resp = drogon::HttpResponse::newHttpResponse();
            resp->setBody("Hello from Drogon!");
            resp->setStatusCode(drogon::k200OK);
            callback(resp);
        },
        {drogon::Get}
    );
    // 启动事件循环
    drogon::app().run();
    return 0;
}

cmake_minimum_required(VERSION 3.5)
project(my_web_app)

set(CMAKE_CXX_STANDARD 17)

find_package(drogon REQUIRED)

add_executable(app main.cc)
target_link_libraries(app drogon)

class ApiCtrl : public drogon::HttpController<ApiCtrl> {
public:
    METHOD_LIST_BEGIN
        ADD_METHOD_TO(ApiCtrl::getTime, "/time", Get);
    METHOD_LIST_END

    void getTime(const drogon::HttpRequestPtr& req,
                 std::function<void (const drogon::HttpResponsePtr&)>& callback) {
        Json::Value json;
        json["time"] = static_cast<long long>(time(nullptr));
        auto resp = drogon::HttpResponse::newHttpJsonResponse(json);
        callback(resp);
    }
};