pull/320/head
muzi1 3 years ago
parent a26fc725c0
commit 49d1704b65

@ -7,6 +7,8 @@ import com.ruoyi.common.security.annotation.RequiresPermissions;
import com.ruoyi.potenza.domain.TbBorrower;
import com.ruoyi.potenza.domain.vo.IdVo;
import com.ruoyi.potenza.service.TbBorrowerService;
import com.ruoyi.potenza.utils.AverageCapitalPlusInterestUtils;
import com.ruoyi.potenza.utils.AverageCapitalUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.List;
@ -124,6 +126,12 @@ public class BorrowerController extends BaseController {
return tbBorrowerService.loans(tbBorrower);
}
@PostMapping("ttt")
public void ttt(){
AverageCapitalUtils.main();
AverageCapitalPlusInterestUtils.main();
}

@ -12,7 +12,9 @@ import com.ruoyi.potenza.utils.AverageCapitalUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
/**
* @author 86155
@ -121,11 +123,13 @@ public class TbBorrowerPeriodsServiceImpl extends ServiceImpl<TbBorrowerPeriodsM
return AjaxResult.success(principalInterestCount);
}
//等额本金
double principalInterestCount = AverageCapitalUtils.
getPrincipalInterestCount(periodDetailVo.getBorrowerMoney(),
tbBorrowerPeriods.getRateInterest()/100,
tbBorrowerPeriods.getPeriodsName());
return AjaxResult.success(principalInterestCount);
// double principalInterestCount = AverageCapitalUtils.
// getPrincipalInterestCount(periodDetailVo.getBorrowerMoney(),
// tbBorrowerPeriods.getRateInterest()/100,
// tbBorrowerPeriods.getPeriodsName());
// return AjaxResult.success(principalInterestCount);
return AjaxResult.error();
}
}

@ -115,10 +115,10 @@ public class TbBorrowerServiceImpl extends ServiceImpl<TbBorrowerMapper, TbBorro
//查询利率
TbBorrowerPeriods tbBorrowerPeriods = tbBorrowerPeriodsMapper.selectTbBorrowerPeriodsByPeriodsId(periodsid);
double perMonthPrincipalInterest = AverageCapitalPlusInterestUtils.
getPerMonthPrincipalInterest(tbBorrower.getBorrowerMoney(),
tbBorrowerPeriods.getRateInterest()/100,
tbBorrowerPeriods.getPeriodsName());
// double perMonthPrincipalInterest = AverageCapitalPlusInterestUtils.
// getPerMonthPrincipalInterest(tbBorrower.getBorrowerMoney(),
// tbBorrowerPeriods.getRateInterest()/100,
// tbBorrowerPeriods.getPeriodsName());
double principalInterestCount = AverageCapitalPlusInterestUtils.

@ -17,32 +17,160 @@ import java.util.Map;
* @version 1.0
*/
public class AverageCapitalPlusInterestUtils {
// /**
// * 等额本息计算获取还款方式为等额本息的每月偿还本金和利息
// * <p>
// * 公式:每月偿还本息=〔贷款本金×月利率×(1月利率)^还款月数〕÷〔(1月利率)^还款月数-1
// *
// * @param invest 总借款额(贷款本金)
// * @param yearRate 年利率
// * @param month 还款总月数
// * @return 每月偿还本金和利息, 不四舍五入,直接截取小数点最后两位
// */
// public static double getPerMonthPrincipalInterest(double invest, double yearRate, int totalmonth) {
// double monthRate = yearRate / 12;
// BigDecimal monthIncome = new BigDecimal(invest)
// .multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
// .divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_DOWN);
// return monthIncome.doubleValue();
// }
//
// /**
// * 等额本息计算获取还款方式为等额本息的每月偿还利息
// * <p>
// * 公式:每月偿还利息=贷款本金×月利率×〔(1+月利率)^还款月数-(1+月利率)^(还款月序号-1)〕÷〔(1+月利率)^还款月数-1
// *
// * @param invest 总借款额(贷款本金)
// * @param yearRate 年利率
// * @param month 还款总月数
// * @return 每月偿还利息
// */
// public static Map<Integer, BigDecimal> getPerMonthInterest(double invest, double yearRate, int totalmonth) {
// Map<Integer, BigDecimal> map = new HashMap<Integer, BigDecimal>();
// double monthRate = yearRate / 12;
// BigDecimal monthInterest;
// for (int i = 1; i < totalmonth + 1; i++) {
// BigDecimal multiply = new BigDecimal(invest).multiply(new BigDecimal(monthRate));
// BigDecimal sub = new BigDecimal(Math.pow(1 + monthRate, totalmonth)).subtract(new BigDecimal(Math.pow(1 + monthRate, i - 1)));
// monthInterest = multiply.multiply(sub).divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 6, BigDecimal.ROUND_DOWN);
// monthInterest = monthInterest.setScale(2, BigDecimal.ROUND_DOWN);
// map.put(i, monthInterest);
// }
// return map;
// }
//
// /**
// * 等额本息计算获取还款方式为等额本息的每月偿还本金
// *
// * @param invest 总借款额(贷款本金)
// * @param yearRate 年利率
// * @param month 还款总月数
// * @return 每月偿还本金
// */
// public static Map<Integer, BigDecimal> getPerMonthPrincipal(double invest, double yearRate, int totalmonth) {
// double monthRate = yearRate / 12;
// BigDecimal monthIncome = new BigDecimal(invest)
// .multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
// .divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_DOWN);
// Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, totalmonth);
// Map<Integer, BigDecimal> mapPrincipal = new HashMap<Integer, BigDecimal>();
//
// for (Map.Entry<Integer, BigDecimal> entry : mapInterest.entrySet()) {
// mapPrincipal.put(entry.getKey(), monthIncome.subtract(entry.getValue()));
// }
// return mapPrincipal;
// }
//
// /**
// * 等额本息计算获取还款方式为等额本息的总利息
// *
// * @param invest 总借款额(贷款本金)
// * @param yearRate 年利率
// * @param month 还款总月数
// * @return 总利息
// */
// public static double getInterestCount(double invest, double yearRate, int totalmonth) {
// BigDecimal count = new BigDecimal(0);
// Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, totalmonth);
//
// for (Map.Entry<Integer, BigDecimal> entry : mapInterest.entrySet()) {
// count = count.add(entry.getValue());
// }
// return count.doubleValue();
// }
//
// /**
// * 应还本金总和
// *
// * @param invest 总借款额(贷款本金)
// * @param yearRate 年利率
// * @param month 还款总月数
// * @return 应还本金总和
// */
// public static double getPrincipalInterestCount(double invest, double yearRate, int totalmonth) {
// double monthRate = yearRate / 12;
// BigDecimal perMonthInterest = new BigDecimal(invest)
// .multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
// .divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_DOWN);
// BigDecimal count = perMonthInterest.multiply(new BigDecimal(totalmonth));
// count = count.setScale(2, BigDecimal.ROUND_DOWN);
// return count.doubleValue();
// }
//
//
// /**
// * @param args
// */
// public static void main(String[] args) {
// double invest = 20000; // 本金
// int month = 12;
// double yearRate = 0.15; // 年利率
// double perMonthPrincipalInterest = getPerMonthPrincipalInterest(invest, yearRate, month);
// System.out.println("等额本息---每月还款本息:" + perMonthPrincipalInterest);
// Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, month);
// System.out.println("等额本息---每月还款利息:" + mapInterest);
// Map<Integer, BigDecimal> mapPrincipal = getPerMonthPrincipal(invest, yearRate, month);
// System.out.println("等额本息---每月还款本金:" + mapPrincipal);
// double count = getInterestCount(invest, yearRate, month);
// System.out.println("等额本息---总利息:" + count);
// double principalInterestCount = getPrincipalInterestCount(invest, yearRate, month);
// System.out.println("等额本息---应还本息总和:" + principalInterestCount);
//
// }
/**
*
* <p>
*
* =××(1)÷(1)-1
*
* @param invest
* @param yearRate
* @param month
* @return ,
* @param invest
*
* @param yearRate
*
* @param month
*
* @return ,
*/
public static double getPerMonthPrincipalInterest(double invest, double yearRate, int totalmonth) {
public static BigDecimal getPerMonthPrincipalInterest(double invest, double yearRate, int totalmonth) {
double monthRate = yearRate / 12;
BigDecimal monthIncome = new BigDecimal(invest)
.multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
.divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_DOWN);
return monthIncome.doubleValue();
.divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_UP);
//return monthIncome.doubleValue();
return monthIncome;
}
/**
*
* <p>
*
* =××(1+)^-(1+)^(-1)÷(1+)^-1
*
* @param invest
* @param yearRate
* @param month
* @param invest
*
* @param yearRate
*
* @param month
*
* @return
*/
public static Map<Integer, BigDecimal> getPerMonthInterest(double invest, double yearRate, int totalmonth) {
@ -51,8 +179,10 @@ public class AverageCapitalPlusInterestUtils {
BigDecimal monthInterest;
for (int i = 1; i < totalmonth + 1; i++) {
BigDecimal multiply = new BigDecimal(invest).multiply(new BigDecimal(monthRate));
BigDecimal sub = new BigDecimal(Math.pow(1 + monthRate, totalmonth)).subtract(new BigDecimal(Math.pow(1 + monthRate, i - 1)));
monthInterest = multiply.multiply(sub).divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 6, BigDecimal.ROUND_DOWN);
BigDecimal sub = new BigDecimal(Math.pow(1 + monthRate, totalmonth))
.subtract(new BigDecimal(Math.pow(1 + monthRate, i - 1)));
monthInterest = multiply.multiply(sub).divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2,
BigDecimal.ROUND_DOWN);
monthInterest = monthInterest.setScale(2, BigDecimal.ROUND_DOWN);
map.put(i, monthInterest);
}
@ -62,9 +192,12 @@ public class AverageCapitalPlusInterestUtils {
/**
*
*
* @param invest
* @param yearRate
* @param month
* @param invest
*
* @param yearRate
*
* @param month
*
* @return
*/
public static Map<Integer, BigDecimal> getPerMonthPrincipal(double invest, double yearRate, int totalmonth) {
@ -84,9 +217,12 @@ public class AverageCapitalPlusInterestUtils {
/**
*
*
* @param invest
* @param yearRate
* @param month
* @param invest
*
* @param yearRate
*
* @param month
*
* @return
*/
public static double getInterestCount(double invest, double yearRate, int totalmonth) {
@ -102,9 +238,12 @@ public class AverageCapitalPlusInterestUtils {
/**
*
*
* @param invest
* @param yearRate
* @param month
* @param invest
*
* @param yearRate
*
* @param month
*
* @return
*/
public static double getPrincipalInterestCount(double invest, double yearRate, int totalmonth) {
@ -117,16 +256,21 @@ public class AverageCapitalPlusInterestUtils {
return count.doubleValue();
}
/**
* @param args
*/
public static void main(String[] args) {
double invest = 20000; // 本金
public static void main() {
double invest = 10000; // 本金
int month = 12;
double yearRate = 0.15; // 年利率
double perMonthPrincipalInterest = getPerMonthPrincipalInterest(invest, yearRate, month);
double yearRate = 0.015; // 年利率
BigDecimal perMonthPrincipalInterest = getPerMonthPrincipalInterest(invest, yearRate, month);
System.out.println("等额本息---每月还款本息:" + perMonthPrincipalInterest);
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 3));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 6));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 9));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 12));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 15));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 18));
Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, month);
System.out.println("等额本息---每月还款利息:" + mapInterest);
Map<Integer, BigDecimal> mapPrincipal = getPerMonthPrincipal(invest, yearRate, month);
@ -135,7 +279,7 @@ public class AverageCapitalPlusInterestUtils {
System.out.println("等额本息---总利息:" + count);
double principalInterestCount = getPrincipalInterestCount(invest, yearRate, month);
System.out.println("等额本息---应还本息总和:" + principalInterestCount);
}
}

@ -10,10 +10,154 @@ import java.util.Map;
* @date 2023/1/15 20:49
*/
public class AverageCapitalUtils {
// /**
// * 等额本息计算获取还款方式为等额本息的每月偿还本金和利息
// *
// * 公式:每月偿还本息=〔贷款本金×月利率×(1月利率)^还款月数〕÷〔(1月利率)^还款月数-1
// *
// * @param invest
// * 总借款额(贷款本金)
// * @param yearRate
// * 年利率
// * @param month
// * 还款总月数
// * @return 每月偿还本金和利息,不四舍五入,直接截取小数点最后两位
// */
// public static BigDecimal getPerMonthPrincipalInterest(double invest, double yearRate, int totalmonth) {
// double monthRate = yearRate / 12;
// BigDecimal monthIncome = new BigDecimal(invest)
// .multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
// .divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_UP);
// //return monthIncome.doubleValue();
// return monthIncome;
// }
//
// /**
// * 等额本息计算获取还款方式为等额本息的每月偿还利息
// *
// * 公式:每月偿还利息=贷款本金×月利率×〔(1+月利率)^还款月数-(1+月利率)^(还款月序号-1)〕÷〔(1+月利率)^还款月数-1
// *
// * @param invest
// * 总借款额(贷款本金)
// * @param yearRate
// * 年利率
// * @param month
// * 还款总月数
// * @return 每月偿还利息
// */
// public static Map<Integer, BigDecimal> getPerMonthInterest(double invest, double yearRate, int totalmonth) {
// Map<Integer, BigDecimal> map = new HashMap<Integer, BigDecimal>();
// double monthRate = yearRate / 12;
// BigDecimal monthInterest;
// for (int i = 1; i < totalmonth + 1; i++) {
// BigDecimal multiply = new BigDecimal(invest).multiply(new BigDecimal(monthRate));
// BigDecimal sub = new BigDecimal(Math.pow(1 + monthRate, totalmonth))
// .subtract(new BigDecimal(Math.pow(1 + monthRate, i - 1)));
// monthInterest = multiply.multiply(sub).divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2,
// BigDecimal.ROUND_DOWN);
// monthInterest = monthInterest.setScale(2, BigDecimal.ROUND_DOWN);
// map.put(i, monthInterest);
// }
// return map;
// }
//
// /**
// * 等额本息计算获取还款方式为等额本息的每月偿还本金
// *
// * @param invest
// * 总借款额(贷款本金)
// * @param yearRate
// * 年利率
// * @param month
// * 还款总月数
// * @return 每月偿还本金
// */
// public static Map<Integer, BigDecimal> getPerMonthPrincipal(double invest, double yearRate, int totalmonth) {
// double monthRate = yearRate / 12;
// BigDecimal monthIncome = new BigDecimal(invest)
// .multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
// .divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_DOWN);
// Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, totalmonth);
// Map<Integer, BigDecimal> mapPrincipal = new HashMap<Integer, BigDecimal>();
//
// for (Map.Entry<Integer, BigDecimal> entry : mapInterest.entrySet()) {
// mapPrincipal.put(entry.getKey(), monthIncome.subtract(entry.getValue()));
// }
// return mapPrincipal;
// }
//
// /**
// * 等额本息计算获取还款方式为等额本息的总利息
// *
// * @param invest
// * 总借款额(贷款本金)
// * @param yearRate
// * 年利率
// * @param month
// * 还款总月数
// * @return 总利息
// */
// public static double getInterestCount(double invest, double yearRate, int totalmonth) {
// BigDecimal count = new BigDecimal(0);
// Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, totalmonth);
//
// for (Map.Entry<Integer, BigDecimal> entry : mapInterest.entrySet()) {
// count = count.add(entry.getValue());
// }
// return count.doubleValue();
// }
//
// /**
// * 应还本金总和
// *
// * @param invest
// * 总借款额(贷款本金)
// * @param yearRate
// * 年利率
// * @param month
// * 还款总月数
// * @return 应还本金总和
// */
// public static double getPrincipalInterestCount(double invest, double yearRate, int totalmonth) {
// double monthRate = yearRate / 12;
// BigDecimal perMonthInterest = new BigDecimal(invest)
// .multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
// .divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_DOWN);
// BigDecimal count = perMonthInterest.multiply(new BigDecimal(totalmonth));
// count = count.setScale(2, BigDecimal.ROUND_DOWN);
// return count.doubleValue();
// }
//
// /**
// * @param args
// */
// public static void main(String[] args) {
// double invest = 38988; // 本金
// int month = 12;
// double yearRate = 0.15; // 年利率
// BigDecimal perMonthPrincipalInterest = getPerMonthPrincipalInterest(invest, yearRate, month);
// System.out.println("等额本息---每月还款本息:" + perMonthPrincipalInterest);
// System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 3));
// System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 6));
// System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 9));
// System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 12));
// System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 15));
// System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 18));
// /*Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, month);
// System.out.println("等额本息---每月还款利息:" + mapInterest);
// Map<Integer, BigDecimal> mapPrincipal = getPerMonthPrincipal(invest, yearRate, month);
// System.out.println("等额本息---每月还款本金:" + mapPrincipal);
// double count = getInterestCount(invest, yearRate, month);
// System.out.println("等额本息---总利息:" + count);
// double principalInterestCount = getPrincipalInterestCount(invest, yearRate, month);
// System.out.println("等额本息---应还本息总和:" + principalInterestCount);*/
// }
/**
*
*
*
* =××(1)÷(1)-1
* =(÷)+(-)×
*
* @param invest
*
@ -23,19 +167,25 @@ public class AverageCapitalUtils {
*
* @return ,
*/
public static BigDecimal getPerMonthPrincipalInterest(double invest, double yearRate, int totalmonth) {
public static Map<Integer, Double> getPerMonthPrincipalInterest(double invest, double yearRate, int totalMonth) {
Map<Integer, Double> map = new HashMap<Integer, Double>();
// 每月本金
double monthPri = getPerMonthPrincipal(invest, totalMonth);
// 获取月利率
double monthRate = yearRate / 12;
BigDecimal monthIncome = new BigDecimal(invest)
.multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
.divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_UP);
//return monthIncome.doubleValue();
return monthIncome;
monthRate = new BigDecimal(monthRate).setScale(6, BigDecimal.ROUND_DOWN).doubleValue();
for (int i = 1; i <= totalMonth; i++) {
double monthRes = monthPri + (invest - monthPri * (i - 1)) * monthRate;
monthRes = new BigDecimal(monthRes).setScale(2, BigDecimal.ROUND_DOWN).doubleValue();
map.put(i, monthRes);
}
return map;
}
/**
*
*
*
* =××(1+)^-(1+)^(-1)÷(1+)^-1
* =×=(-)×
*
* @param invest
*
@ -45,24 +195,24 @@ public class AverageCapitalUtils {
*
* @return
*/
public static Map<Integer, BigDecimal> getPerMonthInterest(double invest, double yearRate, int totalmonth) {
Map<Integer, BigDecimal> map = new HashMap<Integer, BigDecimal>();
double monthRate = yearRate / 12;
BigDecimal monthInterest;
for (int i = 1; i < totalmonth + 1; i++) {
BigDecimal multiply = new BigDecimal(invest).multiply(new BigDecimal(monthRate));
BigDecimal sub = new BigDecimal(Math.pow(1 + monthRate, totalmonth))
.subtract(new BigDecimal(Math.pow(1 + monthRate, i - 1)));
monthInterest = multiply.multiply(sub).divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2,
BigDecimal.ROUND_DOWN);
monthInterest = monthInterest.setScale(2, BigDecimal.ROUND_DOWN);
map.put(i, monthInterest);
public static Map<Integer, Double> getPerMonthInterest(double invest, double yearRate, int totalMonth) {
Map<Integer, Double> inMap = new HashMap<Integer, Double>();
double principal = getPerMonthPrincipal(invest, totalMonth);
Map<Integer, Double> map = getPerMonthPrincipalInterest(invest, yearRate, totalMonth);
for (Map.Entry<Integer, Double> entry : map.entrySet()) {
BigDecimal principalBigDecimal = new BigDecimal(principal);
BigDecimal principalInterestBigDecimal = new BigDecimal(entry.getValue());
BigDecimal interestBigDecimal = principalInterestBigDecimal.subtract(principalBigDecimal);
interestBigDecimal = interestBigDecimal.setScale(2, BigDecimal.ROUND_DOWN);
inMap.put(entry.getKey(), interestBigDecimal.doubleValue());
}
return map;
return inMap;
}
/**
*
*
*
* =÷
*
* @param invest
*
@ -72,22 +222,13 @@ public class AverageCapitalUtils {
*
* @return
*/
public static Map<Integer, BigDecimal> getPerMonthPrincipal(double invest, double yearRate, int totalmonth) {
double monthRate = yearRate / 12;
BigDecimal monthIncome = new BigDecimal(invest)
.multiply(new BigDecimal(monthRate * Math.pow(1 + monthRate, totalmonth)))
.divide(new BigDecimal(Math.pow(1 + monthRate, totalmonth) - 1), 2, BigDecimal.ROUND_DOWN);
Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, totalmonth);
Map<Integer, BigDecimal> mapPrincipal = new HashMap<Integer, BigDecimal>();
for (Map.Entry<Integer, BigDecimal> entry : mapInterest.entrySet()) {
mapPrincipal.put(entry.getKey(), monthIncome.subtract(entry.getValue()));
}
return mapPrincipal;
public static double getPerMonthPrincipal(double invest, int totalMonth) {
BigDecimal monthIncome = new BigDecimal(invest).divide(new BigDecimal(totalMonth), 2, BigDecimal.ROUND_DOWN);
return monthIncome.doubleValue();
}
/**
*
*
*
* @param invest
*
@ -97,27 +238,16 @@ public class AverageCapitalUtils {
*
* @return
*/
public static double getInterestCount(double invest, double yearRate, int totalmonth) {
public static double getInterestCount(double invest, double yearRate, int totalMonth) {
BigDecimal count = new BigDecimal(0);
Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, totalmonth);
Map<Integer, Double> mapInterest = getPerMonthInterest(invest, yearRate, totalMonth);
for (Map.Entry<Integer, BigDecimal> entry : mapInterest.entrySet()) {
count = count.add(entry.getValue());
for (Map.Entry<Integer, Double> entry : mapInterest.entrySet()) {
count = count.add(new BigDecimal(entry.getValue()));
}
return count.doubleValue();
}
/**
*
*
* @param invest
*
* @param yearRate
*
* @param month
*
* @return
*/
public static double getPrincipalInterestCount(double invest, double yearRate, int totalmonth) {
double monthRate = yearRate / 12;
BigDecimal perMonthInterest = new BigDecimal(invest)
@ -128,28 +258,22 @@ public class AverageCapitalUtils {
return count.doubleValue();
}
/**
* @param args
*/
public static void main(String[] args) {
double invest = 38988; // 本金
int month = 12;
double yearRate = 0.15; // 年利率
BigDecimal perMonthPrincipalInterest = getPerMonthPrincipalInterest(invest, yearRate, month);
System.out.println("等额本息---每月还款本息:" + perMonthPrincipalInterest);
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 3));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 6));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 9));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 12));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 15));
System.out.println("等额本息---每月还款本息:" + getPerMonthPrincipalInterest(invest, yearRate, 18));
/*Map<Integer, BigDecimal> mapInterest = getPerMonthInterest(invest, yearRate, month);
System.out.println("等额本息---每月还款利息:" + mapInterest);
Map<Integer, BigDecimal> mapPrincipal = getPerMonthPrincipal(invest, yearRate, month);
System.out.println("等额本息---每月还款本金:" + mapPrincipal);
double count = getInterestCount(invest, yearRate, month);
System.out.println("等额本息---总利息:" + count);
double principalInterestCount = getPrincipalInterestCount(invest, yearRate, month);
System.out.println("等额本息---应还本息总和:" + principalInterestCount);*/
/**
* @param args
*/
public static void main() {
double invest = 10000; // 本金
int month = 12;
double yearRate = 0.015; // 年利率
Map<Integer, Double> getPerMonthPrincipalInterest = getPerMonthPrincipalInterest(invest, yearRate, month);
System.out.println("等额本金---每月本息:" + getPerMonthPrincipalInterest);
double benjin = getPerMonthPrincipal(invest, month);
System.out.println("等额本金---每月本金:" + benjin);
Map<Integer, Double> mapInterest = getPerMonthInterest(invest, yearRate, month);
System.out.println("等额本金---每月利息:" + mapInterest);
double count = getInterestCount(invest, yearRate, month);
System.out.println("等额本金---总利息:" + count);
double principalInterestCount = getPrincipalInterestCount(invest, yearRate, month);
System.out.println("等额本金---应还本息总和:"+principalInterestCount);
}
}
}

Loading…
Cancel
Save