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我已经写了下面的程序来从服务器获取JSON响应。代码是正确的,服务器的响应符合我的预期。从服务器如何在C++的.json文件中保存HTTP GET的JSON响应?
#include <boost/asio/ip/tcp.hpp> //I have not shown some header for sake of readability
int main()
{
try
{
boost::asio::ip::tcp::iostream s;
s.expires_from_now(boost::posix_time::seconds(60));
const std::string IP = "123.456.789.000";
s.connect(IP, "83");
if (!s) {
std::cout << "Unable to connect: " << s.error().message() << "\n";
}
s << "GET /MY_PATH HTTP/1.1\r\n";
s << "Host: 123.456.789.000:83\r\n";
s << "Accept: */*\r\n";
s << "Connection: close\r\n\r\n";
// Checking if response is OK.
std::string http_version;
s >> http_version;
unsigned int status_code;
s >> status_code;
std::cout<<"\nHTTP " << status_code << std::endl;
std::string status_message;
std::getline(s, status_message);
if (!s || http_version.substr(0, 5) != "HTTP/") {
std::cout << "Invalid response\n";
}
if (status_code != 200) {
std::cout << "\nResponse returned with status code " << status_code << "\n";
}
// Processing the response headers, which were terminated by a blank line.
std::string header;
while (std::getline(s, header) && header != "\r")
std::cout << header << "\n";
std::cout << "\n";
// Writing the remaining data to output.
std::cout << s.rdbuf() << "\n" << std::endl;
}// try ends here
catch (std::exception& e) {
std::cout << "Exception: " << e.what() << "\n";
}
}
答复如下:
HTTP 200
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft
X-AspNet-Version: 4
X-Powered-By: ASP.NET
Date: Wed, 13 May 2015 07:49:57 GMT
Connection: close
Content-Length: 345
[{"CmdID":"30b2b2ca-376d-42bf-a931-1b92679871fc","EID":"102","CID":"00000102","NAME":"ABCD","BDAY":null,"VDATE":null,"UID":null,"ImgFileType":null,"EIMAGEBASE64STR":null},{"CmdID":"83c7d70da361-4f98-9803-1d5b7771d329","EID":"00000109","CID":"00000109","NAME":"CDEF","BDAY":null,"VDATE":null,"UID":null,"ImgFileType":null,"EIMAGEBASE64STR":null}]
我现在想的JSON响应字符串保存到以.json文件。我怎么能这样做?
此时我可以存储包含HEADER和JSON字符串的完整服务器响应。但我只对JSON字符串感兴趣。
在接下来的步骤中(我已经完成了),这个json字符串将被解析并存储到sqlite3数据库中。但不幸的是我被困在这。
请帮忙。谢谢
'//写剩余的数据输出。 std :: cout << s.rdbuf()<<“\ n”<< std :: endl;'只写入文件。有什么问题? – Cthulhu
哦......是啊!现在我很尴尬地发布这个问题:( –
@CthulhuThank你 –