libExtensions.lib(json_reader.obj) : error LNK2019: 无法解析的外部符号 “__declspec(dllimport) public: bool __thiscall std::basic_istream<char,struct std::char_traits >::_Ipfx(bool)” (_imp?_Ipfx@?$basic_istream@DU?$char_traits@D@std@@@std@@QAE_N_N@Z)，该符号在函数 “public: __thiscall std::basic_istream<char,struct std::char_traits >::sentry::sentry(class std::basic_istream<char,struct std::char_traits > &,bool)” (??0sentry@?$basic_istream@DU?$char_traits@D@std@@@std@@QAE@AAV12@_N@Z) 中被引用
