rookie-Spring

参数校验

javax.validation.constraints

JSR303/JSR-349 标准

@NotEmpty, @NotBlank, @NotNull

• @NotEmpty

  The annotated element must not be null nor empty.
  Supported types are:
  CharSequence (length of character sequence is evaluated)
  Collection (collection size is evaluated)
  Map (map size is evaluated)
  Array (array length is evaluated)

• @NotBlank

  The annotated element must not be null and must contain at least one non-whitespace character. Accepts CharSequence.

• @NotNull

  The annotated element must not be null. Accepts any type