C++:
发出 HTTP 请求
How to: (如何操作:)
#include <iostream>
#include <cpr/cpr.h>
int main() {
cpr::Response r = cpr::Get(cpr::Url{"http://httpbin.org/get"});
std::cout << "Status code: " << r.status_code << std::endl; // 200
std::cout << "Response body: " << r.text << std::endl; // JSON response
}
输出示例:
Status code: 200
Response body: {
"args": {},
"headers": {
"Accept": "*/*",
"Host": "httpbin.org",
...
},
"url": "http://httpbin.org/get"
}
Deep Dive (深入探索)
发送 HTTP 请求在网络编程中非常常用。早期C++标准库中没有内建的HTTP支持, 需要依赖如libcurl这样的库。现代而言,C++有了更现代化的库,比如cpr,它是对libcurl的C++封装,使用起来更简单。除cpr外,还可以使用Boost.Beast、Poco等库。在实现上,正确地处理HTTP协议细节、编码、连接管理和超时至关重要。
See Also (另请参阅)
- cpr GitHub repository: https://github.com/whoshuu/cpr
- libcurl: https://curl.se/libcurl/
- Boost.Beast: https://www.boost.org/doc/libs/develop/libs/beast/
- Poco Project: https://pocoproject.org/