From 0336488baabcf482c44bce876163624dfc0bfa11 Mon Sep 17 00:00:00 2001 From: "calvin.xiao" Date: Fri, 9 Nov 2018 16:55:53 +0800 Subject: [PATCH] =?UTF-8?q?#134=20=E6=89=8B=E5=B7=A5=E5=90=88=E5=B9=B6PR#1?= =?UTF-8?q?34=E9=83=A8=E5=88=86=E5=86=85=E5=AE=B9=EF=BC=8Cthank=20you=20@z?= =?UTF-8?q?hanggh?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../java/com/vip/vjtools/vjkit/io/IOUtil.java | 31 +++- .../vip/vjtools/vjkit/number/MoneyUtil.java | 170 ++++++++++++++++++ .../vjtools/vjkit/number/MoneyUtilTest.java | 24 +++ 3 files changed, 217 insertions(+), 8 deletions(-) create mode 100644 vjkit/src/main/java/com/vip/vjtools/vjkit/number/MoneyUtil.java create mode 100644 vjkit/src/test/java/com/vip/vjtools/vjkit/number/MoneyUtilTest.java diff --git a/vjkit/src/main/java/com/vip/vjtools/vjkit/io/IOUtil.java b/vjkit/src/main/java/com/vip/vjtools/vjkit/io/IOUtil.java index 5e32f140..115c593f 100644 --- a/vjkit/src/main/java/com/vip/vjtools/vjkit/io/IOUtil.java +++ b/vjkit/src/main/java/com/vip/vjtools/vjkit/io/IOUtil.java @@ -1,6 +1,7 @@ package com.vip.vjtools.vjkit.io; import java.io.BufferedReader; +import java.io.ByteArrayInputStream; import java.io.Closeable; import java.io.IOException; import java.io.InputStream; @@ -23,20 +24,20 @@ * * 建议使用Apache Commons IO和Guava关于IO的工具类(com.google.common.io.*), 在未引入Commons IO时可以用本类做最基本的事情. * - *

* 1. 安静关闭Closeable对象 - *

+ * * 2. 读出InputStream/Reader全部内容到String 或 List - *

- * 3. 读出InputStream一行内容到String - *

+ * + * 3. 读出InputStream/Reader一行内容到String + * * 4. 将String写到OutputStream/Writer - *

+ * + * 5. 将String 转换为InputStream/Reader + * * 5. InputStream/Reader与OutputStream/Writer之间复制的copy * */ public class IOUtil { - private static final String CLOSE_ERROR_MESSAGE = "IOException thrown while closing Closeable."; private static Logger logger = LoggerFactory.getLogger(IOUtil.class); @@ -52,7 +53,7 @@ public static void closeQuietly(Closeable closeable) { try { closeable.close(); } catch (IOException e) { - logger.warn(CLOSE_ERROR_MESSAGE, e); + logger.warn("IOException thrown while closing Closeable.", e); } } @@ -121,6 +122,20 @@ public static void write(final String data, final Writer output) throws IOExcept } } + /** + * 字符串转换成InputStream + */ + public static InputStream toInputStream(String input) { + return new ByteArrayInputStream(input.getBytes(Charsets.UTF_8)); + } + + /** + * 字符串转换成Reader + */ + public static Reader toInputStreamReader(String input) { + return new InputStreamReader(toInputStream(input), Charsets.UTF_8); + } + /** * 在Reader与Writer间复制内容 * diff --git a/vjkit/src/main/java/com/vip/vjtools/vjkit/number/MoneyUtil.java b/vjkit/src/main/java/com/vip/vjtools/vjkit/number/MoneyUtil.java new file mode 100644 index 00000000..6b6cfe76 --- /dev/null +++ b/vjkit/src/main/java/com/vip/vjtools/vjkit/number/MoneyUtil.java @@ -0,0 +1,170 @@ +package com.vip.vjtools.vjkit.number; + +import java.math.BigDecimal; +import java.math.RoundingMode; +import java.text.DecimalFormat; +import java.text.ParseException; + +import org.apache.commons.lang3.StringUtils; + +/** + * 货币工具类. + * + * 1.元和分之间的转换 + * 2.货币格式化成字符串 + * 3.字符串转换成货币 + * + */ +public class MoneyUtil { + + private static final ThreadLocal DEFAULT_FORMAT = createThreadLocalNumberformat("0.00"); + + private static final ThreadLocal PRETTY_FORMAT = createThreadLocalNumberformat("#,##0.00"); + + // ThreadLocal重用MessageDigest + private static ThreadLocal createThreadLocalNumberformat(final String pattern) { + return new ThreadLocal() { + @Override + protected DecimalFormat initialValue() { + DecimalFormat df = (DecimalFormat) DecimalFormat.getInstance(); + df.applyPattern(pattern); + return df; + + } + }; + } + + + /////////////////// 元和分的转换 /////////////////// + + /** + * 人民币金额单位转换，分转换成元，取两位小数 例如：150 => 1.5 + */ + public static BigDecimal fen2yuan(BigDecimal num) { + return num.divide(new BigDecimal(100), 2, RoundingMode.HALF_UP); + } + + /** + * 人民币金额单位转换，分转换成元，取两位小数 例如：150 => 1.5 + */ + public static BigDecimal fen2yuan(long num) { + return fen2yuan(new BigDecimal(num)); + } + + /** + * 人民币金额单位转换，分转换成元，取两位小数 例如：150 => 1.5 + */ + public static BigDecimal fen2yuan(String num) { + if (StringUtils.isEmpty(num)) { + return new BigDecimal(0); + } + return fen2yuan(new BigDecimal(num)); + } + + /** + * 人民币金额单位转换，元转换成分，例如：1 => 100 + */ + public static BigDecimal yuan2fen(String y) { + return new BigDecimal(Math.round(new BigDecimal(y).multiply(new BigDecimal(100)).doubleValue())); + } + + /** + * 人民币金额单位转换，元转换成分，例如：1 => 100 + */ + public static BigDecimal yuan2fen(double y) { + return yuan2fen(String.valueOf(y)); + } + + /** + * 人民币金额单位转换，元转换成分，例如：1 => 100 + */ + public static BigDecimal yuan2fen(BigDecimal y) { + if (y != null) { + return yuan2fen(y.toString()); + } else { + return new BigDecimal(0); + } + } + + ////////////////// 格式化输出 ////////////////// + /** + * 格式化金额，例如：1=>1.00 + */ + public static String format(BigDecimal number) { + return format(number.doubleValue()); + } + + /** + * 格式化金额，默认格式：00.0 ,例如：1=>1.00 + */ + public static String format(double number) { + return DEFAULT_FORMAT.get().format(number); + } + + /** + * 格式化金额，默认格式：#,##0.00 ,例如：33999999932.3333d 输出：33,999,999,932.33 + */ + public static String prettyFormat(BigDecimal number) { + return prettyFormat(number.doubleValue()); + } + + /** + * 格式化金额，默认格式：#,##0.00 ,例如：33999999932.3333d 输出：33,999,999,932.33 + */ + public static String prettyFormat(double number) { + return PRETTY_FORMAT.get().format(number); + } + + /** + * 格式化金额，当pattern为空时，pattern默认为#,##0.00 + */ + public static String formatNumber(BigDecimal number, String pattern) { + return formatNumber(number.doubleValue(), pattern); + } + + /** + * 格式化金额，当pattern为空时，pattern默认为#,##0.00 + */ + public static String formatNumber(double number, String pattern) { + DecimalFormat df = null; + if (StringUtils.isEmpty(pattern)) { + df = PRETTY_FORMAT.get(); + } else { + df = (DecimalFormat) DecimalFormat.getInstance(); + df.applyPattern(pattern); + } + + return df.format(number); + } + + /////////////// 转换金额字符串为金额////////// + + /** + * 分析格式为0.00格式的字符串 + */ + public static BigDecimal parseString(String numberStr) throws ParseException { + return new BigDecimal(DEFAULT_FORMAT.get().parse(numberStr).doubleValue()); + } + + /** + * 分析格式为#,##0.00格式的字符串 + */ + public static BigDecimal parsePrettyString(String numberStr) throws ParseException { + return new BigDecimal(PRETTY_FORMAT.get().parse(numberStr).doubleValue()); + } + + /** + * 按格式分析字符串，当pattern为空时，pattern默认为#,##0.00 + */ + public static BigDecimal parseString(String numberStr, String pattern) throws ParseException { + DecimalFormat df = null; + if (StringUtils.isEmpty(pattern)) { + df = PRETTY_FORMAT.get(); + } else { + df = (DecimalFormat) DecimalFormat.getInstance(); + df.applyPattern(pattern); + } + + return new BigDecimal(df.parse(numberStr).doubleValue()); + } +} diff --git a/vjkit/src/test/java/com/vip/vjtools/vjkit/number/MoneyUtilTest.java b/vjkit/src/test/java/com/vip/vjtools/vjkit/number/MoneyUtilTest.java new file mode 100644 index 00000000..c4dff631 --- /dev/null +++ b/vjkit/src/test/java/com/vip/vjtools/vjkit/number/MoneyUtilTest.java @@ -0,0 +1,24 @@ +package com.vip.vjtools.vjkit.number; + +import static org.assertj.core.api.Assertions.*; + +import java.math.BigDecimal; + +import org.junit.Test; + +public class MoneyUtilTest { + + @Test + public void amountConvertTest() { + // 金额分转换成元 + assertThat(MoneyUtil.fen2yuan(100).doubleValue()).isEqualTo(new BigDecimal(1.00d).doubleValue()); + assertThat(MoneyUtil.fen2yuan("100").doubleValue()).isEqualTo(new BigDecimal(1.00d).doubleValue()); + assertThat(MoneyUtil.fen2yuan(BigDecimal.valueOf(100d)).doubleValue()) + .isEqualTo(new BigDecimal(1.00d).doubleValue()); + + // 金额元转换成分 + assertThat(MoneyUtil.yuan2fen(BigDecimal.valueOf(1d)).doubleValue()) + .isEqualTo(new BigDecimal(100d).doubleValue()); + assertThat(MoneyUtil.yuan2fen(1L).doubleValue()).isEqualTo(new BigDecimal(100d).doubleValue()); + } +}