说明： cpp-httplib 是个开源的库，是一个c++封装的http库，使用这个库可以在linux、windows平台下完成http客户端、http服务端的搭建，这是一个多线程“阻塞”HTTP 库。 使用起来非常方便，只需要包含头文件httplib.h即可。 源码库地址：https://github.com/yhirose/cpp-httplib httplib 库基本结构： 发送请求Request类的组成： class Request { std::string method; // 请求方法 std::string path; // 请求路径 map<std::string, std::string> param; // 查询字符串(查询字符串中) map<std::string, std::string> headers;// 键值对头部 std::string body; //正文 }; 响应数据类Response的组成： class Response { int status; //返回的状态码 map<std::string,std::string> headers; //返回的价值对头部 std::string body; //正文 }; 服务端Server 类的组成： class Server { public: using Handler = std::function<void(const Request &, Response &)>; using HandlerWithContentReader = std::function<void( const Request &, Response &, const ContentReader &content_reader)>; using Expect100ContinueHandler = std::function<int(const Request &, Response &)>; Server(); virtual ~Server(); virtual bool is_valid() const; Server &Get(const char *pattern, Handler handler); Server &Post(const char *pattern, Handler handler); Server &Post(const char *pattern, HandlerWithContentReader handler); Server &Put(const char *pattern, Handler handler); Server &Put(const char *pattern, HandlerWithContentReader handler); Server &Patch(const char *pattern, Handler handler); Server &Patch(const char *pattern, HandlerWithContentReader handler); Server &Delete(const char *pattern, Handler handler); Server &Delete(const char *pattern, HandlerWithContentReader handler); Server &Options(const char *pattern, Handler handler); 客户端Client 类的组成： class Client { //创建client Client(host,port); Get() Post() Put() ... }; 简单实例： Server： #define CPPHTTPLIB_OPENSSL_SUPPORT #include "path/to/httplib.h" // HTTP httplib::Server svr; // HTTPS httplib::SSLServer svr; svr.Get("/hi", [](const httplib::Request &, httplib::Response &res) { res.set_content("Hello World!", "text/plain"); }); svr.listen("0.0.0.0", 8080); Client： #define CPPHTTPLIB_OPENSSL_SUPPORT #include "path/to/httplib.h" // HTTP httplib::Client cli("http://cpp-httplib-server.yhirose.repl.co"); // HTTPS httplib::Client cli("https://cpp-httplib-server.yhirose.repl.co"); auto res = cli.Get("/hi"); res->status; res->body; SSL Support： SSL support 要用到 CPPHTTPLIB_OPENSSL_SUPPORT. libssl and libcrypto 的支持。 现在只有 httplib 1.1.1 支持ssl 服务器。 #define CPPHTTPLIB_OPENSSL_SUPPORT #include "path/to/httplib.h" // Server httplib::SSLServer svr("./cert.pem", "./key.pem"); // Client httplib::Client cli("https://localhost:1234"); // scheme + host httplib::SSLClient cli("localhost:1234"); // host // Use your CA bundle cli.set_ca_cert_path("./ca-bundle.crt"); // Disable cert verification cli.enable_server_certificate_verification(false); g++ -o service service.cpp -I/usr/local/openssl/include -L/usr/local/openssl/lib -lssl -lcrypto -pthread 完整简单web例子： #include <stdio.h> #include <iostream> #include <jsoncpp/json/json.h> #include "httplib.h" using namespace httplib; using namespace std; int g_val = 100; void Get_CallBackFunc(const Request& req, Response& resp) { printf("%d\n", g_val); cout << req.method << endl; printf("i am Get_CallBackFunc\n"); const char* lp = "<html><h2>hello bite!</h2></html>"; resp.set_content(lp, strlen(lp), "text/html"); } int main() { Server http_svr; int a = 10; http_svr.Get("/abc", Get_CallBackFunc); http_svr.Post("/login", [](const Request& req, Response& resp){ cout << req.body << endl; Json::Value resp_json; resp_json["login_status"] = true; Json::FastWriter w; resp.body = w.write(resp_json); resp.set_header("Content-Type", "application/json"); }); http_svr.set_mount_point("/", "./web"); http_svr.listen("0.0.0.0", 21010); return 0; } 完整简单upload例子： #include "httplib.h" #include <iostream> #include <fstream> using namespace httplib; using namespace std; int main(void) { Server svr; svr.Post("/post", [](const Request &req, Response &res) { auto music_file = req.get_file_value("music_file"); cout << "image file length: " << music_file.content.length() << endl << "image file name: " << music_file.filename << endl; { ofstream ofs(music_file.filename, ios::binary); ofs << music_file.content; } res.set_content("done", "text/plain"); }); svr.set_mount_point("/", "./www"); /// listen svr.listen("0.0.0.0", 9089); }
标签：httplib,const,pattern,介绍,Server,handler,使用,svr From： https://www.cnblogs.com/kn-zheng/p/17553355.html