Nullity validation for Controller

[babyfish-ct]

In 0.8.86, Jimmer validates the nullity of the parameters of RestController, including primitive types and there box types. Eg:

public void f(@ReqeustParam Long id)

will cause an error, because Long means optional but @RequestParam(required = true) means mandatory.

In order to fix it, users have 2 choices:

1. public void f(@ReqeustParam long id) // `long` means mandatory

2. public void f(@ReqeustParam(required = false) Long id) // `required = false` means optional

Is it validation too strict? Would jimmer keep the validation for primitive/box types or remove it?

[TokgoRonin]

我建议是不要动这一块，controller的入参，惯性太大了，此举会劝退不少想要尝试jimmer的新用户。如果非要做这个事情的话，我建议给一个配置项，默认关闭，想开启严格校验时，由用户手动开启配置项。

[sunshio]

默认关闭吧

[pot-mot]

和 database-validation 类似的整一个配置项，默认关闭