我想使用 curlpp 库编写 C++ 代码,如果可能的话,它在 curl 上的工作方式与以下示例完全相同。
> curl -H "Content-Type: application/json" -X POST -d '{"param1":"val1", "param2":"val2", "param3":"val3"}' --data-binary '@/tmp/somefolder/file.bin' https://my-api.somedomain.com:1024/my_command_url
>
我能够使用 POST 方法编写传输 json 文本,但是当我添加上传命令时,这个库用 PUT 代替了 POST。
最佳答案
我决定在这里发布答案,也许它会帮助像我这样的人
static string post_request(const string url,const string body1,const string path2file)
{
const string field_divider="&";
stringstream result;
try
{
using namespace std;
// This block responsible for reading in the fastest way media file
// and prepare it for sending on API server
ifstream is(path2file);
is.seekg(0, ios_base::end);
size_t size=is.tellg();
is.seekg(0, ios_base::beg);
vector<char> v(size/sizeof(char));
is.read((char*) &v[0], size);
is.close();
string body2(v.begin(),v.end());
// Initialization
curlpp::Cleanup cleaner;
curlpp::Easy request;
list< string > headers;
headers.push_back("Content-Type: application/json");
headers.push_back("User-Agent: curl/7.77.7");
using namespace curlpp::Options;
request.setOpt(new Verbose(true));
request.setOpt(new HttpHeader(headers));
request.setOpt(new Url(url));
request.setOpt(new PostFields(body1+field_divider+body2));
request.setOpt(new PostFieldSize(body1.length()+field_divider.length()+body2.length()));
request.setOpt(new curlpp::options::SslEngineDefault());
request.setOpt(WriteStream(&result));
request.perform();
}
catch ( curlpp::LogicError & e )
{
cout << e.what() << endl;
}
catch ( curlpp::RuntimeError & e )
{
cout << e.what() << endl;
}
return (result.str());
}
关于c++ - 如何使用 curlpp 方法使用 POST 上传文件和 json 数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53091611/