How to '/add_json' in the example?

[qiukun]

looks like the body would be always empty for a GET

[ipkn]

I changed the routing implementation and now the default HTTP method is GET only.

In the HTTP standard, GET request cannot have a request body. Some HTTP client library sends a request with empty body only, some ignores the standard and sends the body too.

The example should changed to

    CROW_ROUTE(app, "/add_json")
        .methods("POST"_method)
    ([](const crow::request& req){

and the request use POST method. Then it will work again I think.

I pushed a fixed version. Can you check it with POST method?

[ipkn]

Fixed README.md too.