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NumberUtil.parseInt忽略科学计数法

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This commit is contained in:
Looly 2022-08-15 10:10:17 +08:00
parent e6b89806f4
commit 2f66008d02
3 changed files with 69 additions and 46 deletions
CHANGELOG.md
hutool-core/src
main/java/cn/hutool/core/util
NumberUtil.java
test/java/cn/hutool/core/util
NumberUtilTest.java

1
CHANGELOG.md
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@ -8,6 +8,7 @@
### 🐣新特性
* 【core 】 CollUtil新增addIfAbsent方法（pr#750@Gitee）
* 【core 】 DateUtil.parseUTC支持只有时分的格式（issue#I5M6DP@Gitee）
* 【core 】 NumberUtil.parseInt忽略科学计数法（issue#I5M55F@Gitee）
*
### 🐞Bug修复
* 【http 】 修复https下可能的Patch、Get请求失效问题（issue#I3Z3DH@Gitee）

5
hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java
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@ -2441,6 +2441,11 @@ public class NumberUtil {
return 0;
}
if(StrUtil.containsIgnoreCase(number, "E")){
// 科学计数法忽略支持，科学计数法一般用于表示非常小和非常大的数字，这类数字转换为int后精度丢失，没有意义。
throw new NumberFormatException(StrUtil.format("Unsupported int format: [{}]", number));
}
if (StrUtil.startWithIgnoreCase(number, "0x")) {
// 0x04表示16进制数
return Integer.parseInt(number.substring(2), 16);

109
hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
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@ -20,37 +20,37 @@ public class NumberUtilTest {
@Test
public void addTest() {
Float a = 3.15f;
Double b = 4.22;
double result = NumberUtil.add(a, b).doubleValue();
final Float a = 3.15f;
final Double b = 4.22;
final double result = NumberUtil.add(a, b).doubleValue();
Assert.assertEquals(7.37, result, 2);
}
@Test
public void addTest2() {
double a = 3.15f;
double b = 4.22;
double result = NumberUtil.add(a, b);
final double a = 3.15f;
final double b = 4.22;
final double result = NumberUtil.add(a, b);
Assert.assertEquals(7.37, result, 2);
}
@Test
public void addTest3() {
float a = 3.15f;
double b = 4.22;
double result = NumberUtil.add(a, b, a, b).doubleValue();
final float a = 3.15f;
final double b = 4.22;
final double result = NumberUtil.add(a, b, a, b).doubleValue();
Assert.assertEquals(14.74, result, 2);
}
@Test
public void addTest4() {
BigDecimal result = NumberUtil.add(new BigDecimal("133"), new BigDecimal("331"));
final BigDecimal result = NumberUtil.add(new BigDecimal("133"), new BigDecimal("331"));
Assert.assertEquals(new BigDecimal("464"), result);
}
@Test
public void addBlankTest(){
BigDecimal result = NumberUtil.add("123", " ");
final BigDecimal result = NumberUtil.add("123", " ");
Assert.assertEquals(new BigDecimal("123"), result);
}
@ -89,13 +89,13 @@ public class NumberUtilTest {
@Test
public void divTest() {
double result = NumberUtil.div(0, 1);
final double result = NumberUtil.div(0, 1);
Assert.assertEquals(0.0, result, 0);
}
@Test
public void divBigDecimalTest() {
BigDecimal result = NumberUtil.div(BigDecimal.ZERO, BigDecimal.ONE);
final BigDecimal result = NumberUtil.div(BigDecimal.ZERO, BigDecimal.ONE);
Assert.assertEquals(BigDecimal.ZERO, result.stripTrailingZeros());
}
@ -103,39 +103,39 @@ public class NumberUtilTest {
public void roundTest() {
// 四舍
String round1 = NumberUtil.roundStr(2.674, 2);
String round2 = NumberUtil.roundStr("2.674", 2);
final String round1 = NumberUtil.roundStr(2.674, 2);
final String round2 = NumberUtil.roundStr("2.674", 2);
Assert.assertEquals("2.67", round1);
Assert.assertEquals("2.67", round2);
// 五入
String round3 = NumberUtil.roundStr(2.675, 2);
String round4 = NumberUtil.roundStr("2.675", 2);
final String round3 = NumberUtil.roundStr(2.675, 2);
final String round4 = NumberUtil.roundStr("2.675", 2);
Assert.assertEquals("2.68", round3);
Assert.assertEquals("2.68", round4);
// 四舍六入五成双
String round31 = NumberUtil.roundStr(4.245, 2, RoundingMode.HALF_EVEN);
String round41 = NumberUtil.roundStr("4.2451", 2, RoundingMode.HALF_EVEN);
final String round31 = NumberUtil.roundStr(4.245, 2, RoundingMode.HALF_EVEN);
final String round41 = NumberUtil.roundStr("4.2451", 2, RoundingMode.HALF_EVEN);
Assert.assertEquals("4.24", round31);
Assert.assertEquals("4.25", round41);
// 补0
String round5 = NumberUtil.roundStr(2.6005, 2);
String round6 = NumberUtil.roundStr("2.6005", 2);
final String round5 = NumberUtil.roundStr(2.6005, 2);
final String round6 = NumberUtil.roundStr("2.6005", 2);
Assert.assertEquals("2.60", round5);
Assert.assertEquals("2.60", round6);
// 补0
String round7 = NumberUtil.roundStr(2.600, 2);
String round8 = NumberUtil.roundStr("2.600", 2);
final String round7 = NumberUtil.roundStr(2.600, 2);
final String round8 = NumberUtil.roundStr("2.600", 2);
Assert.assertEquals("2.60", round7);
Assert.assertEquals("2.60", round8);
}
@Test
public void roundStrTest() {
String roundStr = NumberUtil.roundStr(2.647, 2);
final String roundStr = NumberUtil.roundStr(2.647, 2);
Assert.assertEquals(roundStr, "2.65");
}
@ -174,46 +174,46 @@ public class NumberUtilTest {
@Test
public void decimalFormatTest() {
long c = 299792458;// 光速
final long c = 299792458;// 光速
String format = NumberUtil.decimalFormat(",###", c);
final String format = NumberUtil.decimalFormat(",###", c);
Assert.assertEquals("299,792,458", format);
}
@Test(expected = IllegalArgumentException.class)
public void decimalFormatNaNTest(){
Double a = 0D;
Double b = 0D;
final Double a = 0D;
final Double b = 0D;
Double c = a / b;
final Double c = a / b;
Console.log(NumberUtil.decimalFormat("#%", c));
}
@Test(expected = IllegalArgumentException.class)
public void decimalFormatNaNTest2(){
Double a = 0D;
Double b = 0D;
final Double a = 0D;
final Double b = 0D;
Console.log(NumberUtil.decimalFormat("#%", a / b));
}
@Test
public void decimalFormatDoubleTest() {
Double c = 467.8101;
final Double c = 467.8101;
String format = NumberUtil.decimalFormat("0.00", c);
final String format = NumberUtil.decimalFormat("0.00", c);
Assert.assertEquals("467.81", format);
}
@Test
public void decimalFormatMoneyTest() {
double c = 299792400.543534534;
final double c = 299792400.543534534;
String format = NumberUtil.decimalFormatMoney(c);
final String format = NumberUtil.decimalFormatMoney(c);
Assert.assertEquals("299,792,400.54", format);
double value = 0.5;
String money = NumberUtil.decimalFormatMoney(value);
final double value = 0.5;
final String money = NumberUtil.decimalFormatMoney(value);
Assert.assertEquals("0.50", money);
}
@ -224,7 +224,7 @@ public class NumberUtilTest {
@Test
public void toBigDecimalTest() {
double a = 3.14;
final double a = 3.14;
BigDecimal bigDecimal = NumberUtil.toBigDecimal(a);
Assert.assertEquals("3.14", bigDecimal.toString());
@ -238,13 +238,13 @@ public class NumberUtilTest {
@Test
public void maxTest() {
int max = NumberUtil.max(5,4,3,6,1);
final int max = NumberUtil.max(5,4,3,6,1);
Assert.assertEquals(6, max);
}
@Test
public void minTest() {
int min = NumberUtil.min(5,4,3,6,1);
final int min = NumberUtil.min(5,4,3,6,1);
Assert.assertEquals(1, min);
}
@ -283,27 +283,44 @@ public class NumberUtilTest {
public void parseIntTest2() {
// from 5.4.8 issue#I23ORQ@Gitee
// 千位分隔符去掉
int v1 = NumberUtil.parseInt("1,482.00");
final int v1 = NumberUtil.parseInt("1,482.00");
Assert.assertEquals(1482, v1);
}
@Test(expected = NumberFormatException.class)
public void parseIntTest3() {
int v1 = NumberUtil.parseInt("d");
final int v1 = NumberUtil.parseInt("d");
Assert.assertEquals(0, v1);
}
@Test(expected = NumberFormatException.class)
public void parseNumberTest4(){
// issue#I5M55F
// 科学计数法忽略支持，科学计数法一般用于表示非常小和非常大的数字，这类数字转换为int后精度丢失，没有意义。
final String numberStr = "429900013E20220812163344551";
NumberUtil.parseInt(numberStr);
}
@Test
public void parseNumberTest() {
// from 5.4.8 issue#I23ORQ@Gitee
// 千位分隔符去掉
int v1 = NumberUtil.parseNumber("1,482.00").intValue();
final int v1 = NumberUtil.parseNumber("1,482.00").intValue();
Assert.assertEquals(1482, v1);
Number v2 = NumberUtil.parseNumber("1,482.00D");
final Number v2 = NumberUtil.parseNumber("1,482.00D");
Assert.assertEquals(1482L, v2.longValue());
}
@Test
public void parseNumberTest2(){
// issue#I5M55F
final String numberStr = "429900013E20220812163344551";
final Number number = NumberUtil.parseNumber(numberStr);
Assert.assertNotNull(number);
Assert.assertTrue(number instanceof BigDecimal);
}
@Test
public void parseHexNumberTest() {
// 千位分隔符去掉
@ -421,7 +438,7 @@ public class NumberUtilTest {
@Test
public void toPlainNumberTest(){
String num = "5344.34234e3";
final String num = "5344.34234e3";
final String s = new BigDecimal(num).toPlainString();
Assert.assertEquals("5344342.34", s);
}
@ -434,7 +451,7 @@ public class NumberUtilTest {
@Test
public void isOddOrEvenTest(){
int[] a = { 0, 32, -32, 123, -123 };
final int[] a = { 0, 32, -32, 123, -123 };
Assert.assertFalse(NumberUtil.isOdd(a[0]));
Assert.assertTrue(NumberUtil.isEven(a[0]));