c++使用http请求-drogon框架

1. 创建drogon框架

    drogon_ctl create project test_ctrl

2. 添加一个控制器

• 进入controllers目录下

    drogon_ctl create controller -h check_ctrl

3. 编写主函数

#include <drogon/drogon.h>
int main() {//Set HTTP listener address and port//drogon::app().addListener("0.0.0.0",80);//Load config file#ifdef NDEBUGdrogon::app().loadConfigFile("./config.json");
#elsedrogon::app().loadConfigFile("../../../config.json");
#endifdrogon::app().run();return 0;
}配置文件初步介绍,进需要做如何配置
// 这一部分是http监听的端口和ip地址"listeners": [{//address: Ip address,0.0.0.0 by default"address": "0.0.0.0",//port: Port number"port": 8080,//https: If true, use https for security,false by default"https": false}// ,// {//   "address": "0.0.0.0",//   "port": 443,//   "https": true,//   //cert,key: Cert file path and key file path, empty by default,0.0.1//   //if empty, use the global setting//   "cert": "",//   "key": "",//   //use_old_tls: enable the TLS1.0/1.1, false by default//   "use_old_tls": false,//   "ssl_conf": [//     //["MinProtocol", "TLSv1.3"]//   ]// }],
//------------------
// 这一部分是在程序中的配置文件部分需要使用app().getCustomConfig(),由getCustomConfig得到的变量直接["path"]就可以不需要["custom_config"]["path"]//custom_config: custom configuration for users. This object can be get by the app().getCustomConfig() method."custom_config": {"path": "D:/aaaa/bbb/","time": 8,  // 小时:文件名+~小时得到文件的生成时间}

4. 控制器.h文件

#include <drogon/HttpController.h>
#include <drogon/drogon.h>using namespace drogon;
using namespace std;class check_ctrl : public drogon::HttpController<check_ctrl>
{public:METHOD_LIST_BEGINMETHOD_ADD(check_ctrl::test, "/test?", Post, Get);METHOD_LIST_ENDvoid test(const HttpRequestPtr& req, std::function<void(const HttpResponsePtr&)>&& callback);
};

5. 控制器.cpp文件

void check_ctrl::test(const HttpRequestPtr& req, std::function<void(const HttpResponsePtr&)>&& callback)
{Json::Value ret;// 获取配置文件参数auto config = app().getCustomConfig();if (config.empty()){ret["success"] = false;ret["error_msg"] = "Empty custom config!";callback(HttpResponse::newHttpJsonResponse(ret));return;}// 读取配置文件参数std::string bz2_file = config["path"].asString();   // 文件地址int diff_time = config["time"].asInt();      // 文件时间需要小时 // ........
}