com.github.hugh.aop.constraints.validator.StringLengthValidator Maven / Gradle / Ivy
package com.github.hugh.aop.constraints.validator;
import com.github.hugh.aop.constraints.StringLength;
import com.github.hugh.util.StringUtils;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
/**
* 检查一个数组的长度是否在min和max之间
*
* @author Hugh
* @since 1.7.3
**/
public class StringLengthValidator implements ConstraintValidator {
private int min;
private int max;
private boolean filterChinese;
@Override
public void initialize(StringLength parameters) {
min = parameters.min();
max = parameters.max();
filterChinese = parameters.filterChinese();
}
/**
* 验证字符串长度
*
* @param value 要验证的字符串
* @param context 验证条件的上下文
* @return boolean 如果数组为空或者数组中的条目数在指定的最小值和最大值之间（包括在内），返回{@code true}，否则返回{@code false}}。
*/
@Override
public boolean isValid(String value, ConstraintValidatorContext context) {
if (value == null) {
return true;
}
int length;
if (filterChinese) {
length = StringUtils.varcharSize(value);
} else {
length = value.length();
}
return length >= min && length <= max;
}
}