没有找到Ajax Json路径

我对c++不差，但我对web的了解很糟糕，所以请考虑一下这个问题的答案将是简单的。

我在github上找到了一个用于web服务器的c++库。

当我在浏览器中输入http://localhost:8080/来测试它的HTML页面时，它可以正常工作。我还测试了:

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

它们也很好。

然而，当我尝试测试它的Ajax/Json时，它不适合我使用以下代码在我的firefox浏览器控制台中。

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

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

I tried

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

，得到了相似的结果。

我哪里做错了?

简而言之，c++代码在端口8080上托管一个服务器，响应

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

客户端示例如下:

    //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[链接]

#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$"]["POST"]=[](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) {
        //Retrieve string:
        auto content=request->content.string();
        //request->content.string() is a convenience function for:
        //stringstream ss;
        //ss << request->content.rdbuf();
        //string content=ss.str();
        *response << "HTTP/1.1 200 OKrnContent-Length: " << content.length() << "rnrn" << content;
    };
    //POST-example for the path /json, responds firstName+" "+lastName from the posted json
    //Responds with an appropriate error message if the posted json is not valid, or if firstName or lastName is missing
    //Example posted json:
    //{
    //  "firstName": "John",
    //  "lastName": "Smith",
    //  "age": 25
    //}
    server.resource["^/json$"]["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 OKrnContent-Length: " << name.length() << "rnrn" << name;
        }
        catch(exception& e) {
            *response << "HTTP/1.1 400 Bad RequestrnContent-Length: " << strlen(e.what()) << "rnrn" << e.what();
        }
    };
    //GET-example for the path /info
    //Responds with request-information
    server.resource["^/info$"]["GET"]=[](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) {
        stringstream content_stream;
        content_stream << "<h1>Request from " << request->remote_endpoint_address << " (" << request->remote_endpoint_port << ")</h1>";
        content_stream << request->method << " " << request->path << " HTTP/" << request->http_version << "<br>";
        for(auto& header: request->header) {
            content_stream << header.first << ": " << header.second << "<br>";
        }
        //find length of content_stream (length received using content_stream.tellp())
        content_stream.seekp(0, ios::end);
        *response <<  "HTTP/1.1 200 OKrnContent-Length: " << content_stream.tellp() << "rnrn" << content_stream.rdbuf();
    };
    //GET-example for the path /match/[number], responds with the matched string in path (number)
    //For instance a request GET /match/123 will receive: 123
    server.resource["^/match/([0-9]+)$"]["GET"]=[&server](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> request) {
        string number=request->path_match[1];
        *response << "HTTP/1.1 200 OKrnContent-Length: " << number.length() << "rnrn" << 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 OKrnContent-Length: " << message.length() << "rnrn" << 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 OKrnContent-Length: " << length << "rnrn";
                        default_resource_send(server, response, ifs, buffer);
                        return;
                    }
                }
            }
        }
        string content="Could not open path "+request->path;
        *response << "HTTP/1.1 400 Bad RequestrnContent-Length: " << content.length() << "rnrn" << 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;
            });
        }
    }
}