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syhilysyhily
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简单修改时间类
1 parent 4693cc1 commit 89a539d

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Lines changed: 200 additions & 156 deletions

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‎.editorconfig‎

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# EditorConfig helps developers define and maintain consistent
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# coding styles between different editors and IDEs
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# editorconfig.org
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root = true
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[*]
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# Change these settings to your own preference
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indent_style = space
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indent_size = 4
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# We recommend you to keep these unchanged
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end_of_line = lf
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charset = utf-8
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trim_trailing_whitespace = true
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insert_final_newline = true
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[*.md]
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trim_trailing_whitespace = false
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[{package,bower}.json]
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indent_style = space
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indent_size = 2
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[pom.xml]
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indent_style = tab

‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.javacore</groupId>
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<artifactId>java-core-learning-example</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<name>java core learning example</name>
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<description>java core learning example</description>
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<packaging>war</packaging>
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<properties>
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<google-collections.version>1.0</google-collections.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.google.collections</groupId>
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<artifactId>google-collections</artifactId>
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<version>${google-collections.version}</version>
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</dependency>
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</dependencies>
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<packaging>war</packaging>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.16.8</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/main/java/org/javacore/time/TimeUtil.java‎

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*/
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public final class TimeUtil {
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private TimeUtil() {
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}
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/**
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* 时间间隔之间的空格
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*/
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private static final String SPACE_OF_TIME = " ";
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/**
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* 获取默认时间格式: yyyy-MM-dd HH:mm:ss
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*/
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private static final DateTimeFormatter defaultDateTimeFormatter = DateTimeFormatter.ofPattern(TimeFormat.LONG_DATE_PATTERN_LINE);
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/**
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* String 转时间
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*
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* @param timeStr
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* @return
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*/
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public final static LocalDateTime parseTime(String timeStr) {
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LocalDateTime dateTime = LocalDateTime.parse(timeStr, defaultDateTimeFormatter);
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return dateTime;
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}
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/**
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* String 转时间
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*
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* @param timeStr
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* @param format 时间格式
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* @return
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*/
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public final static LocalDateTime parseTime(String timeStr, String format) {
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LocalDateTime dateTime = LocalDateTime.parse(timeStr, getDateTimeFormatter(format));
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return dateTime;
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}
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/**
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* 时间转 String
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*
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* @param time
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* @return
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*/
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public final static String parseTime(LocalDateTime time) {
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return defaultDateTimeFormatter.format(time);
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}
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/**
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* 时间转 String
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*
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* @param time
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* @param format 时间格式
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* @return
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*/
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public final static String parseTime(LocalDateTime time, String format) {
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return getDateTimeFormatter(format).format(time);
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}
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/**
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* 获取当前时间
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*
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* @return
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*/
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public final static String getCurrentDatetime() {
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LocalDateTime now = LocalDateTime.now().withNano(0);
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return now.toLocalDate() + SPACE_OF_TIME + now.toLocalTime();
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}
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/**
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* 获取当前时间
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*
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* @param format 时间格式
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* @return
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*/
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public final static String getCurrentDatetime(String format) {
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LocalDateTime now = LocalDateTime.now();
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return getDateTimeFormatter(format).format(now);
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}
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/**
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* 获取时间格式
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*
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* @param format 时间格式
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* @return
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*/
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private final static DateTimeFormatter getDateTimeFormatter(String format) {
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return DateTimeFormatter.ofPattern(format);
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}
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public static void main(String[] args) {
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// 当前时间
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System.out.println(getCurrentDatetime(TimeFormat.SHORT_DATE_PATTERN_LINE));
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System.out.println(getCurrentDatetime());
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System.out.println(getCurrentDatetime(TimeFormat.LONG_DATE_PATTERN_WITH_MILSEC_LINE));
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// 时间转 String
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LocalDateTime dateTime = LocalDateTime.now();
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System.out.println(parseTime(dateTime));
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LocalDateTime dateTime1 = LocalDateTime.of(2016, 8, 25, 23, 10, 10);
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System.out.println(parseTime(dateTime1, TimeFormat.LONG_DATE_PATTERN_LINE));
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// String 转时间
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String dateTimeStr = "2016-08-25 23:10:10";
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System.out.println(parseTime(dateTimeStr));
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String dateTimeStr1 = "2016-08-25 23:10:10";
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System.out.println(parseTime(dateTimeStr1, TimeFormat.LONG_DATE_PATTERN_LINE));
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}
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/**
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* 获取默认时间格式: yyyy-MM-dd HH:mm:ss
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*/
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private static final DateTimeFormatter DEFAULT_DATETIME_FORMATTER = TimeFormat.LONG_DATE_PATTERN_LINE.formatter;
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private TimeUtil() {
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// no construct function
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}
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/**
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* String 转时间
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*
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* @param timeStr
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* @return
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*/
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public static LocalDateTime parseTime(String timeStr) {
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return LocalDateTime.parse(timeStr, DEFAULT_DATETIME_FORMATTER);
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}
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/**
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* String 转时间
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*
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* @param timeStr
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* @param format 时间格式
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* @return
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*/
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public static LocalDateTime parseTime(String timeStr, TimeFormat format) {
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return LocalDateTime.parse(timeStr, format.formatter);
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}
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/**
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* 时间转 String
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*
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* @param time
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* @return
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*/
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public static String parseTime(LocalDateTime time) {
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return DEFAULT_DATETIME_FORMATTER.format(time);
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}
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/**
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* 时间转 String
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*
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* @param time
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* @param format 时间格式
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* @return
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*/
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public static String parseTime(LocalDateTime time, TimeFormat format) {
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return format.formatter.format(time);
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}
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/**
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* 获取当前时间
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*
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* @return
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*/
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public static String getCurrentDatetime() {
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return DEFAULT_DATETIME_FORMATTER.format(LocalDateTime.now());
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}
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/**
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* 获取当前时间
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*
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* @param format 时间格式
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* @return
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*/
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public static String getCurrentDatetime(TimeFormat format) {
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return format.formatter.format(LocalDateTime.now());
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}
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/**
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* 时间格式
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*/
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public enum TimeFormat {
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/**
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* 短时间格式
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*/
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SHORT_DATE_PATTERN_LINE("yyyy-MM-dd"),
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SHORT_DATE_PATTERN_SLASH("yyyy/MM/dd"),
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SHORT_DATE_PATTERN_DOUBLE_SLASH("yyyy\\MM\\dd"),
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SHORT_DATE_PATTERN_NONE("yyyyMMdd"),
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/**
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* 长时间格式
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*/
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LONG_DATE_PATTERN_LINE("yyyy-MM-dd HH:mm:ss"),
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LONG_DATE_PATTERN_SLASH("yyyy/MM/dd HH:mm:ss"),
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LONG_DATE_PATTERN_DOUBLE_SLASH("yyyy\\MM\\dd HH:mm:ss"),
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LONG_DATE_PATTERN_NONE("yyyyMMdd HH:mm:ss"),
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/**
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* 长时间格式 带毫秒
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*/
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LONG_DATE_PATTERN_WITH_MILSEC_LINE("yyyy-MM-dd HH:mm:ss.SSS"),
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LONG_DATE_PATTERN_WITH_MILSEC_SLASH("yyyy/MM/dd HH:mm:ss.SSS"),
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LONG_DATE_PATTERN_WITH_MILSEC_DOUBLE_SLASH("yyyy\\MM\\dd HH:mm:ss.SSS"),
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LONG_DATE_PATTERN_WITH_MILSEC_NONE("yyyyMMdd HH:mm:ss.SSS");
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private transient DateTimeFormatter formatter;
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TimeFormat(String pattern) {
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formatter = DateTimeFormatter.ofPattern(pattern);
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}
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}
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}
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/**
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* 时间格式
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*
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*/
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class TimeFormat {
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/**
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* 短时间格式
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*/
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public static final String SHORT_DATE_PATTERN_LINE = "yyyy-MM-dd";
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public static final String SHORT_DATE_PATTERN_SLASH = "yyyy/MM/dd";
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public static final String SHORT_DATE_PATTERN_DOUBLE_SLASH = "yyyy\\MM\\dd";
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public static final String SHORT_DATE_PATTERN_NONE = "yyyyMMdd";
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/**
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* 长时间格式
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*/
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public static final String LONG_DATE_PATTERN_LINE = "yyyy-MM-dd HH:mm:ss";
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public static final String LONG_DATE_PATTERN_SLASH = "yyyy/MM/dd HH:mm:ss";
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public static final String LONG_DATE_PATTERN_DOUBLE_SLASH = "yyyy\\MM\\dd HH:mm:ss";
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public static final String LONG_DATE_PATTERN_NONE = "yyyyMMdd HH:mm:ss";
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/**
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* 长时间格式 带毫秒
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*/
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public static final String LONG_DATE_PATTERN_WITH_MILSEC_LINE = "yyyy-MM-dd HH:mm:ss.SSS";
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public static final String LONG_DATE_PATTERN_WITH_MILSEC_SLASH = "yyyy/MM/dd HH:mm:ss.SSS";
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public static final String LONG_DATE_PATTERN_WITH_MILSEC_DOUBLE_SLASH = "yyyy\\MM\\dd HH:mm:ss.SSS";
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public static final String LONG_DATE_PATTERN_WITH_MILSEC_NONE = "yyyyMMdd HH:mm:ss.SSS";
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}

‎src/test/java/org/javacore/time/TimeUtilTest.java‎

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package org.javacore.time;
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import org.junit.FixMethodOrder;
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import org.junit.Test;
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import org.junit.runners.MethodSorters;
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import java.time.LocalDateTime;
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import static org.javacore.time.TimeUtil.TimeFormat.LONG_DATE_PATTERN_DOUBLE_SLASH;
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import static org.javacore.time.TimeUtil.TimeFormat.LONG_DATE_PATTERN_SLASH;
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import static org.junit.Assert.assertEquals;
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@FixMethodOrder(MethodSorters.NAME_ASCENDING)
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public class TimeUtilTest {
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@Test
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public void testParseSpecificTimeStringByUsingDefaultPattern() throws Exception {
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LocalDateTime expectedDateTime = LocalDateTime.of(2014, 11, 11, 10, 11, 11);
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LocalDateTime parsedTime = TimeUtil.parseTime("2014-11-11 10:11:11");
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assertEquals(expectedDateTime, parsedTime);
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}
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@Test
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public void testParseSpecificTimeStringUsingTimeFormat() throws Exception {
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LocalDateTime expectedDateTime = LocalDateTime.of(2014, 11, 11, 10, 11, 11);
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LocalDateTime parsedTime = TimeUtil.parseTime("2014/11/11 10:11:11", LONG_DATE_PATTERN_SLASH);
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assertEquals(expectedDateTime, parsedTime);
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}
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@Test
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public void testParseLocalDateTimeByUsingDefaultFormatter() throws Exception {
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LocalDateTime time = LocalDateTime.of(2014, 11, 11, 10, 11, 11);
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assertEquals(TimeUtil.parseTime(time), "2014-11-11 10:11:11");
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}
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@Test
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public void testParseLocalDateTimeByUsingTimeFormat() throws Exception {
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LocalDateTime time = LocalDateTime.of(2014, 11, 11, 10, 11, 11);
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assertEquals(TimeUtil.parseTime(time, LONG_DATE_PATTERN_DOUBLE_SLASH), "2014\\11\\11 10:11:11");
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}
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}

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