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93 lines (83 loc) · 2.07 KB
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package common.utils;
import java.math.BigDecimal;
/**
* @author xma
*/
public class NumberUtil {
/**
* 把字符串转化成Integer类型
* 如果输入参数是 null值或空值，返回null
*
* @param str
* @return
*/
public static Integer parseStringToInteger(String str) {
if (null == str || "".equals(str.trim())) {
return null;
}
return Integer.parseInt(str);
}
/**
* 把字符串转化成Double类型
* 如果输入参数是 null值或空值，返回null
*
* @param str
* @return
*/
public static Double parseStringToDouble(String str) {
if (null == str || "".equals(str.trim())) {
return null;
}
return Double.parseDouble(str);
}
/**
* 把null转换成 0
*
* @param number
* @return
*/
public static Double parseNullToZero(Double number) {
if (null == number) {
return 0d;
}
return number;
}
/**
* 把null转换成 0
*
* @param number
* @return
*/
public static Integer parseNullToZero(Integer number) {
if (null == number) {
return 0;
}
return number;
}
public static Double roundUpFormatDouble(Double num) {
return roundUpFormatDouble(num, 4);
}
public static Double roundUpFormatDouble(Double num, Integer scale) {
BigDecimal bd = new BigDecimal(num);
return bd.setScale(scale, BigDecimal.ROUND_HALF_UP).doubleValue(); //ROUND_HALF_UP:向上取整
}
public static String formatMoney(Double money) {
if (null == money) {
money = 0.0;
}
return String.format("%3.2f", money);
}
/**
* 将金额格式化
*
* @param money
* @param floatNbr 保留的小数位数
* @return
*/
public static String formatMoney(Double money, int floatNbr) {
if (null == money) {
money = 0.0;
}
return String.format("%3." + floatNbr + "f", money);
}
}