2
libcurl을 사용하여 직렬화 된 코드를 다운로드하고 열 수 있지만 fstream이 누락 된 것처럼 보이는 오류가 발생하지만 대단히 많이 포함되어 있습니다. 주변을 둘러 보았지만 오류는 거의 발생하지 않았습니다. 다음은 오류 및 코드입니다. 무엇이 그리웠습니까?오류 : 'ios_base'가 선언되지 않았습니다.
컴파일 오류 출력
g++ -g testGetprice2.cpp -o testGetprice2.o -std=gnu++11 -lcurl
testGetprice2.cpp: In function 'int getData()':
testGetprice2.cpp:45:56: error: 'ios_base' has not been declared
testGetprice2.cpp:45:72: error: 'ios_base' has not been declared
코드 :
#include "rapidjson/include/rapidjson/document.h"
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <curl/curl.h>
#include <unistd.h>
#include <unordered_map>
#include <string>
using namespace rapidjson;
struct myData
{
std::fstream *file;
std::string *str;
};
size_t write_data(void *ptr, size_t size, size_t nmemb, myData *data)
{
size_t numBytes = size * nmemb;
if (data->file)
data->file->write((char*)ptr, numBytes);
if (data->str)
*data->str += std::string((char*)ptr, numBytes);
return numBytes;
}
//function to get coin data and perform analysis
int getData()
{
int count = 0;
//begin non terminating loop
while(true)
{
count++;
CURL *curl = curl_easy_init();
if (curl)
{
curl_easy_setopt(curl, CURLOPT_URL, "http://pubapi.cryptsy.com/api.php?method=singlemarketdata&marketid=155");
std::fstream file("/home/coinz/cryptsy/myfile.txt", ios_base::out | ios_base::ate);
std::string json;
myData data;
data.file = &file;
data.str = &json;
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &write_data);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &data);
/* Perform the request, res will get the return code */
CURLcode res = curl_easy_perform(curl);
/* Check for errors */
if (res != CURLE_OK)
{
std::cerr << "curl_easy_perform() failed: " << curl_easy_strerror(res) << std::endl;
}
else
{
file << std::endl;
//begin deserialization
Document document;
document.Parse(json.c_str());
assert(document.HasMember("lasttradeprice"));
assert(document["hello"].IsString());
std::cout << "The Last Traded Price is = " << document["lasttradeprice"].GetString() << std::endl;
}
/* always cleanup */
curl_easy_cleanup(curl);
}
//timer for URL request. *ADUJST ME AS DESIRED*
usleep(10000000);
}
return 0;
}
//Le Main
int main(void)
{
getData();
}