1. c++ json解析库(https://github.com/nlohmann/json.git)
下载地址:https://github.com/nlohmann/json/releases
mkdir nlohmann_json \ && cd nlohmann_json \ && wget https://github.com/nlohmann/json/archive/v3.7.3.tar.gz \ && tar -xzvf v3.7.3.tar.gz \ && cd json-3.7.3 \ && mkdir build \ && cd build \ && cmake .. \ && make \ && make install \ && cd .. && rm -rf ./nlohmann_json