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boost的http json數據

謝彥文2年前8瀏覽0評論

作為C++程序員,很多人會選擇使用boost庫來實現各種功能,其中boost庫中提供了許多強大的工具,例如boost中的http和json數據處理工具。

在使用boost庫中的http工具時,我們通常需要用到boost::asio來進行網絡編程處理,例如以下代碼:

boost::asio::io_service io_service;
boost::asio::ip::tcp::resolver resolver(io_service);
boost::asio::ip::tcp::socket socket(io_service);
boost::asio::connect(socket, resolver.resolve({ boost::asio::ip::address::from_string("IP地址"), 端口號 }));
boost::asio::streambuf request;
std::ostream request_stream(&request);
request_stream << "GET / HTTP/1.1\r\n";
request_stream << "Host: IP地址\r\n";
request_stream << "Accept: */*\r\n";
request_stream << "Connection: close\r\n\r\n";
boost::asio::write(socket, request);
boost::asio::streambuf response;
boost::asio::read_until(socket, response, "\r\n");
std::istream response_stream(&response);
std::string http_version;
response_stream >> http_version;
unsigned int status_code;
response_stream >> status_code;
std::string status_message;
std::getline(response_stream, status_message);
if (!response_stream || http_version.substr(0, 5) != "HTTP/")
{
std::cout << "Invalid response\n";
return;
}
boost::asio::read_until(socket, response, "\r\n\r\n");
std::string header;
while (std::getline(response_stream, header) && header != "\r")
std::cout << header << "\n";
std::cout << "\n";
std::stringstream ss;
ss << &response;
std::cout << "Response body: " << ss.str() << "\n";

在使用json處理工具時,我們通常需要使用boost::property_tree來進行json的讀取和處理,例如以下代碼:

std::string json_str = "{\"name\": \"boost\", \"version\": 1.72}";
boost::property_tree::ptree pt;
std::stringstream ss(json_str);
boost::property_tree::read_json(ss, pt);
std::string name = pt.get("name");
int version = pt.get("version");
std::cout << "Name: " << name << ", Version: " << version << "\n";

通過boost的http工具和json處理工具,我們可以更方便地進行網絡編程和處理json數據,這一點對于C++程序員來說是非常方便且必不可少的。