@Length，@MaxLength，@MinLength
maxLength，minLength只有value属性，表示和value进行比较
min和max是Length的属性
汉字算一个长度
@NotBlank、@NotNull、@NotEmpty
NotBlank：Check if the string representation is not empty and does not only contain white spaces.
NotNull：Check if not null.
NotEmpty：Check if the string representation is not empty ("").
@CheckWith
Check the value by a method of the sameclass that takes the value as argument and returns true if valid and false ifinvalid.
使用net.sf.oval.constraint.CheckWithCheck.SimpleCheck实现该接口的类中isSatisfied方法来判断，返回true有效，false无效；如果实现类是内部的，必须为静态类。
示例：验证User类中的age字段
@CheckWith(value=CheckAge.class,message="agemust in (18~65)")
private int age;
验证类如下：
publicclass CheckAge implements CheckWithCheck.SimpleCheck {
private static final long serialVersionUID =1L;
@Override
public boolean isSatisfied(Object validatedObject, Object value) {
if (!validatedObject instanceof User) {
return false;
}
User user = (User)validatedObject;
int age = user.getAge();
if(age <18 || age > 65)
return false;
else
return true;
}
}
完全验证
选择性验证(多个验证选择性验证)
List message = validator.validate(entity, profiles);
根据profiles进行选择性验证entity对象，可以指定多个profiles
验证对象的某个字段
public List validateFieldValue(final Object validatedObject, final Field validatedField,final Object fieldValueToValidate)
