@Inherited @Documented @Retention(value=RUNTIME) @Target(value={FIELD,PARAMETER}) @Constraint(validatedBy=NotNullValidator.class) public @interface NotNull
Class<?>[]
groups
String
message
Class<? extends javax.validation.Payload>[]
payload
public abstract String message
空或者null 则抛出默认异常信息
public abstract Class<?>[] groups
public abstract Class<? extends javax.validation.Payload>[] payload
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