flutter_geetest_plugin_backendjson 0.0.3

A new flutter plugin project.

flutter_geetest_plugin_backendjson

flutter 极验 行为验证 插件 ，用法详见example包main.dart 此版本后端请求API content-type为application/json E.g api2 request body: { "geetestSeccode": "", "geetest_challenge": "", "geetest_validate": "" }