我尝试运行Play中给出的示例应用程序！验证框架，但它不断抛出异常。
/Users/Parjun/code-samples/play-samples/play-authenticate/samples/java/play-authenticate-usage/app/controllers/Signup.java:182: cannot find symbol
[error] symbol : method noCache(play.mvc.Http.Response)
[error] location: class com.feth.play.module.pa.controllers.Authenticate
[error] com.feth.play.module.pa.controllers.Authenticate.noCache(response());
noCache是Controller中定义的公共方法。无法弄清楚为什么会这样。