Ajax Json 경로를 찾을 수 없습니다.

Question

저는 C++에서는 나쁘지 않지만 웹에 대한 끔찍한 지식이 있으므로이 질문에 대한 대답은 간단 할 것이라고 생각하십시오.

웹 서버에 대한 C++ 라이브러리를 찾았습니다. here on github.

브라우저에 http://localhost:8080/을 입력하면 HTML 페이지를 테스트 할 때 정상적으로 작동합니다. 나는 또한 시험했다 :

http://localhost:8080/info 
http://localhost:8080/match/8796 

잘 작동한다.

그러나 Ajax/Json을 테스트하려고하면 Firefox 브라우저 콘솔에서 다음 코드를 사용하여 작동하지 않습니다.

$.post("json", {firstName: "John",lastName: "Smith",age: 25}); 



not well-formed  json:1:18 ---> Could not open path /json 

나는

$.post("string", {firstName: "John",lastName: "Smith",age: 25}); 

을 시도하고 비슷한 결과를 받았다.

어디서 실수합니까?

---

는 C++ 짧은 코드, 포트 8080에 서버를 호스팅

는 응답

server.resource["^/string$"]["POST"] 
server.resource["^/json$"]["POST"] 
server.resource["^/info$"]["GET"] 
server.resource["^/work$"]["GET"] 
server.default_resource["GET"] 

에 클라이언트의 예는 다음과 같습니다

//Client examples 
    HttpClient client("localhost:8080"); 
    auto r1=client.request("GET", "/match/123"); 
    cout << r1->content.rdbuf() << endl; 

    string json_string="{\"firstName\": \"John\",\"lastName\": \"Smith\",\"age\": 25}"; 
    auto r2=client.request("POST", "/string", json_string); 
    cout << r2->content.rdbuf() << endl; 

    auto r3=client.request("POST", "/json", json_string); 
    cout << r3->content.rdbuf() << endl; 

---

http_examples.cpp [link]

#include "server_http.hpp" 
#include "client_http.hpp" 

//Added for the json-example 
#define BOOST_SPIRIT_THREADSAFE 
#include <boost/property_tree/ptree.hpp> 
#include <boost/property_tree/json_parser.hpp> 

//Added for the default_resource example 
#include <fstream> 
#include <boost/filesystem.hpp> 
#include <vector> 
#include <algorithm> 

using namespace std; 
//Added for the json-example: 
using namespace boost::property_tree; 

typedef SimpleWeb::Server<SimpleWeb::HTTP> HttpServer; 
typedef SimpleWeb::Client<SimpleWeb::HTTP> HttpClient; 

//Added for the default_resource example 
void default_resource_send(const HttpServer &server, shared_ptr<HttpServer::Response> response, 
          shared_ptr<ifstream> ifs, shared_ptr<vector<char> > buffer); 

int main() { 
    //HTTP-server at port 8080 using 1 thread 
    //Unless you do more heavy non-threaded processing in the resources, 
    //1 thread is usually faster than several threads 
    HttpServer server(8080, 1); 

    //Add resources using path-regex and method-string, and an anonymous function 
    //POST-example for the path /string, responds the posted string 
    server.resource["^/string$"]["POST"]=[](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) { 
     //Retrieve string: 
     auto content=request->content.string(); 
     //request->content.string() is a convenience function for: 
     //stringstream ss; 
     //ss << request->content.rdbuf(); 
     //string content=ss.str(); 

     *response << "HTTP/1.1 200 OK\r\nContent-Length: " << content.length() << "\r\n\r\n" << content; 
    }; 

    //POST-example for the path /json, responds firstName+" "+lastName from the posted json 
    //Responds with an appropriate error message if the posted json is not valid, or if firstName or lastName is missing 
    //Example posted json: 
    //{ 
    // "firstName": "John", 
    // "lastName": "Smith", 
    // "age": 25 
    //} 
    server.resource["^/json$"]["POST"]=[](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) { 
     try { 
      ptree pt; 
      read_json(request->content, pt); 

      string name=pt.get<string>("firstName")+" "+pt.get<string>("lastName"); 

      *response << "HTTP/1.1 200 OK\r\nContent-Length: " << name.length() << "\r\n\r\n" << name; 
     } 
     catch(exception& e) { 
      *response << "HTTP/1.1 400 Bad Request\r\nContent-Length: " << strlen(e.what()) << "\r\n\r\n" << e.what(); 
     } 
    }; 

    //GET-example for the path /info 
    //Responds with request-information 
    server.resource["^/info$"]["GET"]=[](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) { 
     stringstream content_stream; 
     content_stream << "<h1>Request from " << request->remote_endpoint_address << " (" << request->remote_endpoint_port << ")</h1>"; 
     content_stream << request->method << " " << request->path << " HTTP/" << request->http_version << "<br>"; 
     for(auto& header: request->header) { 
      content_stream << header.first << ": " << header.second << "<br>"; 
     } 

     //find length of content_stream (length received using content_stream.tellp()) 
     content_stream.seekp(0, ios::end); 

     *response << "HTTP/1.1 200 OK\r\nContent-Length: " << content_stream.tellp() << "\r\n\r\n" << content_stream.rdbuf(); 
    }; 

    //GET-example for the path /match/[number], responds with the matched string in path (number) 
    //For instance a request GET /match/123 will receive: 123 
    server.resource["^/match/([0-9]+)$"]["GET"]=[&server](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) { 
     string number=request->path_match[1]; 
     *response << "HTTP/1.1 200 OK\r\nContent-Length: " << number.length() << "\r\n\r\n" << number; 
    }; 

    //Get example simulating heavy work in a separate thread 
    server.resource["^/work$"]["GET"]=[&server](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> /*request*/) { 
     thread work_thread([response] { 
      this_thread::sleep_for(chrono::seconds(5)); 
      string message="Work done"; 
      *response << "HTTP/1.1 200 OK\r\nContent-Length: " << message.length() << "\r\n\r\n" << message; 
     }); 
     work_thread.detach(); 
    }; 

    //Default GET-example. If no other matches, this anonymous function will be called. 
    //Will respond with content in the web/-directory, and its subdirectories. 
    //Default file: index.html 
    //Can for instance be used to retrieve an HTML 5 client that uses REST-resources on this server 
    server.default_resource["GET"]=[&server](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) { 
     const auto web_root_path=boost::filesystem::canonical("web"); 
     boost::filesystem::path path=web_root_path; 
     path/=request->path; 
     if(boost::filesystem::exists(path)) { 
      path=boost::filesystem::canonical(path); 
      //Check if path is within web_root_path 
      if(distance(web_root_path.begin(), web_root_path.end())<=distance(path.begin(), path.end()) && 
       equal(web_root_path.begin(), web_root_path.end(), path.begin())) { 
       if(boost::filesystem::is_directory(path)) 
        path/="index.html"; 
       if(boost::filesystem::exists(path) && boost::filesystem::is_regular_file(path)) { 
        auto ifs=make_shared<ifstream>(); 
        ifs->open(path.string(), ifstream::in | ios::binary); 

        if(*ifs) { 
         //read and send 128 KB at a time 
         streamsize buffer_size=131072; 
         auto buffer=make_shared<vector<char> >(buffer_size); 

         ifs->seekg(0, ios::end); 
         auto length=ifs->tellg(); 

         ifs->seekg(0, ios::beg); 

         *response << "HTTP/1.1 200 OK\r\nContent-Length: " << length << "\r\n\r\n"; 
         default_resource_send(server, response, ifs, buffer); 
         return; 
        } 
       } 
      } 
     } 
     string content="Could not open path "+request->path; 
     *response << "HTTP/1.1 400 Bad Request\r\nContent-Length: " << content.length() << "\r\n\r\n" << content; 
    }; 

    thread server_thread([&server](){ 
     //Start server 
     server.start(); 
    }); 

    //Wait for server to start so that the client can connect 
    this_thread::sleep_for(chrono::seconds(1)); 

    //Client examples 
    HttpClient client("localhost:8080"); 
    auto r1=client.request("GET", "/match/123"); 
    cout << r1->content.rdbuf() << endl; 

    string json_string="{\"firstName\": \"John\",\"lastName\": \"Smith\",\"age\": 25}"; 
    auto r2=client.request("POST", "/string", json_string); 
    cout << r2->content.rdbuf() << endl; 

    auto r3=client.request("POST", "/json", json_string); 
    cout << r3->content.rdbuf() << endl; 

    server_thread.join(); 

    return 0; 
} 

void default_resource_send(const HttpServer &server, shared_ptr<HttpServer::Response> response, 
          shared_ptr<ifstream> ifs, shared_ptr<vector<char> > buffer) { 
    streamsize read_length; 
    if((read_length=ifs->read(&(*buffer)[0], buffer->size()).gcount())>0) { 
     response->write(&(*buffer)[0], read_length); 
     if(read_length==static_cast<streamsize>(buffer->size())) { 
      server.send(response, [&server, response, ifs, buffer](const boost::system::error_code &ec) { 
       if(!ec) 
        default_resource_send(server, response, ifs, buffer); 
       else 
        cerr << "Connection interrupted" << endl; 
      }); 
     } 
    } 
} 

012 3,516,

Answer 1

하여 상대 URL을 변경 시도하고 완벽하게 실행됩니다. HTML 파일에서

넣어이와 브라우저에서 실행 : http_examples.cpp의

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script> 
<script> 
    $.post("http://localhost:8080/json", 
     JSON.stringify({ firstName: "John", lastName: "Smith", age: 25 }) 
    ); 
</script> 

변경 라인 # 53의 기능을 여기에 :

server.resource["^/json$"]["POST"]=[](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) { 
    try { 
     ptree pt; 
     read_json(request->content, pt); 

     string name=pt.get<string>("firstName")+" "+pt.get<string>("lastName"); 

     *response << "HTTP/1.1 200 OK\r\nContent-Length: " << name.length() << "\r\n" 
        << "Access-Control-Allow-Origin: *" << "\r\n\r\n" 
        << name; 
    } 
    catch(exception& e) { 
     *response << "HTTP/1.1 400 Bad Request\r\nContent-Length: " << strlen(e.what()) << "\r\n\r\n" << e.what(); 
    } 
}; 

그런 다음, 이렇게 다시 컴파일하고 다시 실행하십시오 :

프로젝트 폴더에 있어야합니다.

make && ./http_examples 

Answer 2

내가 다음 단계로 테스트 한 http://localhost:8080/json