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NumberUtils.java
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254 lines (209 loc) · 6.64 KB
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package common.util;
import java.math.BigDecimal;
import java.math.RoundingMode;
public class NumberUtils {
private static final BigDecimal BIGDECIMAL_ONE_HUNDRED = BigDecimal.valueOf(100);
// 除法，scale 保留2位小数
private static final int SCALE = 2;
// 除法，一律向下取整（舍弃scale后面的数字）
private static final RoundingMode ROUNDING_MODE = RoundingMode.DOWN;
/**
* 非空 && >=0
*/
public static boolean notNullAndGreaterThanOrEqualsZero(Integer o) {
if (o == null) {
return false;
}
return greaterThanOrEqualsZero(o);
}
public static boolean notNullAndGreaterThanOrEqualsZero(Long o) {
if (o == null) {
return false;
}
return greaterThanOrEqualsZero(o);
}
public static boolean notNullAndGreaterThanOrEqualsZero(BigDecimal o) {
if (o == null) {
return false;
}
return greaterThanOrEqualsZero(o);
}
/**
* 非空 && >0
*/
public static boolean notNullAndGreaterThanZero(Integer o) {
return !nullOrLessThanOrEqualsZero(o);
}
public static boolean notNullAndGreaterThanZero(Long o) {
return !nullOrLessThanOrEqualsZero(o);
}
public static boolean notNullAndGreaterThanZero(BigDecimal o) {
return !nullOrLessThanOrEqualsZero(o);
}
/**
* 空 || <= 0
*/
public static boolean nullOrLessThanOrEqualsZero(Integer o) {
if (o == null) {
return true;
}
return lessThanOrEqualsZero(o);
}
public static boolean nullOrLessThanOrEqualsZero(Long o) {
if (o == null) {
return true;
}
return lessThanOrEqualsZero(o);
}
public static boolean nullOrLessThanOrEqualsZero(BigDecimal o) {
if (o == null) {
return true;
}
return lessThanOrEqualsZero(o);
}
public static boolean nullOrLessThanZero(Integer o) {
if (o == null) {
return true;
}
return lessThanZero(o);
}
public static boolean nullOrLessThanZero(Long o) {
if (o == null) {
return true;
}
return lessThanZero(o);
}
public static boolean nullOrLessThanZero(BigDecimal o) {
if (o == null) {
return true;
}
return lessThanZero(o);
}
/******** 基础方法：<= 0 ******/
public static boolean lessThanOrEqualsZero(Integer o) {
return lessThanOrEquals(o, 0);
}
public static boolean lessThanOrEqualsZero(Long o) {
return lessThanOrEquals(o, 0L);
}
public static boolean lessThanOrEqualsZero(BigDecimal o) {
return lessThanOrEquals(o, BigDecimal.ZERO);
}
public static <T extends Comparable<T>> boolean lessThanOrEquals(T o, T num) {
if (num == null || o == null) {
return false;
}
return o.compareTo(num) <= 0;
}
/******** 基础方法：< 0 ******/
public static boolean lessThanZero(Integer o) {
return lessThan(o, 0);
}
public static boolean lessThanZero(Long o) {
return lessThan(o, 0L);
}
public static boolean lessThanZero(BigDecimal o) {
return lessThan(o, BigDecimal.ZERO);
}
public static <T extends Comparable<T>> boolean lessThan(T o, T num) {
if (num == null || o == null) {
return false;
}
return o.compareTo(num) < 0;
}
/******** 基础方法：>= 0 ******/
public static boolean greaterThanOrEqualsZero(Integer o) {
return greaterThanOrEquals(o, 0);
}
public static boolean greaterThanOrEqualsZero(Long o) {
return greaterThanOrEquals(o, 0L);
}
public static boolean greaterThanOrEqualsZero(BigDecimal o) {
return greaterThanOrEquals(o, BigDecimal.ZERO);
}
public static <T extends Comparable<T>> boolean greaterThanOrEquals(T o, T num) {
if (num == null || o == null) {
return false;
}
return o.compareTo(num) >= 0;
}
/******** 基础方法：> 0 ******/
public static boolean greaterThanZero(Integer o) {
return greaterThan(o, 0);
}
public static boolean greaterThanZero(Long o) {
return greaterThan(o, 0L);
}
public static boolean greaterThanZero(BigDecimal o) {
return greaterThan(o, BigDecimal.ZERO);
}
public static <T extends Comparable<T>> boolean greaterThan(T o, T num) {
if (num == null || o == null) {
return false;
}
return o.compareTo(num) > 0;
}
/****************** 价格 单位转换 *******************/
/**
* 单位分 -> 单位元
*/
public static BigDecimal getPriceYuan(Integer fen) {
return greaterThanZero(fen)
? divide100(fen)
: null;
}
public static BigDecimal getPriceYuan(Long fen) {
return greaterThanZero(fen)
? divide100(fen)
: null;
}
public static BigDecimal getPriceYuan(BigDecimal fen) {
return greaterThanZero(fen)
? divide100(fen)
: null;
}
/******** 基础方法：÷ 100 ******/
public static BigDecimal divide100(Integer fen) {
return divide(BigDecimal.valueOf(fen), BIGDECIMAL_ONE_HUNDRED);
}
public static BigDecimal divide100(Long fen) {
return divide(BigDecimal.valueOf(fen), BIGDECIMAL_ONE_HUNDRED);
}
public static BigDecimal divide100(BigDecimal fen) {
return divide(fen, BIGDECIMAL_ONE_HUNDRED);
}
/**
* 除法，默认保留两位小数，向下取整
*
* @param dividend 被除数
* @param divisor 除数
* @return 商
*/
public static BigDecimal divide(BigDecimal dividend, BigDecimal divisor) {
if (dividend == null || divisor == null) {
return BigDecimal.ZERO;
}
return dividend.divide(divisor, SCALE, ROUNDING_MODE);
}
public static BigDecimal divide(BigDecimal dividend, BigDecimal divisor, int scale, RoundingMode roundingMode) {
if (dividend == null || divisor == null) {
return BigDecimal.ZERO;
}
return dividend.divide(divisor, scale, roundingMode);
}
/**
* 单位分 -> 单位元
*/
public static BigDecimal getPriceFen(BigDecimal yuan) {
if (yuan == null) {
return null;
}
return yuan.multiply(BIGDECIMAL_ONE_HUNDRED);
}
public static BigDecimal getPriceFen(Double yuan) {
if (yuan == null) {
return null;
}
return BigDecimal.valueOf(yuan).multiply(BIGDECIMAL_ONE_HUNDRED);
}
}