目前,我有类似
的内容@NotNull(message="{err.required}")
@Size(min=1, message="{err.required}")
private String firstName;
在我的messages.properties
中,我有
err.required={0} is required.
它有效,但它打印出firstName is required.
,这很难看。它将变量名称firstName
作为{0}
中的参数传递。
如何传递类似" 名字"代替?因此它将成为First name is required.
答案 0 :(得分:3)
你可以这样做:
@NotNull(message="First name {err.required}")
@Size(min=1, message="First name {err.required}")
private String firstName;
@NotNull(message="Last name {err.required}")
@Size(min=1, message="Last name {err.required}")
private String lastName;
并在属性文件中
err.required= is required.
或者如果您想更清楚,可以添加自己的注释和验证器:
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = { NotEmptyValidator.class })
public @interface NotEmpty {
String message() default "{customMessage} is required.";
Class<?>[] groups() default { };
Class<? extends Payload>[] payload() default { };
String customMessage() default "";
}
public class NotEmptyValidator implements ConstraintValidator<NotEmpty, String>
{
@Override
public void initialize(NotEmpty notEmpty)
{
}
@Override
public boolean isValid(String value, ConstraintValidatorContext context)
{
return value != null && !value.isEmpty();
}
}
然后你的领域
@NotEmpty(message="{err.required}"
customMessage="First name")
private String firstName;
并且在属性中(虽然它不是必需的,因为您可以将值默认为此):
err.required={customMessage} is required.