xiaohesong

Rails Middleware app/middleware/dalta_logger.rb #app/middleware/dalta_logger.rb class DeltaLogger def initialize(app, formatting_char = '=', log_level = "info") @app = app @formatting_char =

Sinatragem install sinatra hello_sinatra mkdir -p hello_sinatra cd hello_sinatravim hello_sinatra.rbrequire "sinatra" get "/" do "Hello, world!" end然后 ruby hello_sinatra.rblocalhost:4567修改hello_sinat