ExternalFormAuthorizeHandlerFactory：负责构造ExternalFormHandler（根据不同的请求）AbstractExternalFormAuthorizeHandler.ParamEntity：登录鉴权相关信息（tenantId、applicationId、formDefinitionId等）AbstractExternalFormAuthorizeHandler.handler()：负责登录鉴权
MutualFormAuthorizeHandler
+ ParamEntity
+handler();
ExternalFormAuthorizeHandlerFactory
+ getExternalFormHandler():ExternalFormHandler
SubmitFormAuthorizeHandler
ExternalFormAuthorizeHandler
OpenFormAuthorizeHandler
QueryFormAuthorizeHandler
create
AbstractExternalFormAuthorizeHandler
