程序包 com.publiccms.common.tools

类 CommonUtils

java.lang.Object

com.publiccms.common.tools.CommonUtils

public class CommonUtils
extends Object

CommonUtils 通用Utils

字段概要

字段

修饰符和类型	字段	说明
private static final int	caseDiff
private static BitSet	dontNeedEncoding

构造器概要

构造器

限定符	构造器	说明
private	CommonUtils()

方法概要

修饰符和类型	方法	说明
static boolean	empty(File file)
static boolean	empty(Number value)
static boolean	empty(Object[] value)
static boolean	empty(String value)
static boolean	empty(Map<?,?> value)
static String	encodeURI(String s)
static String	getConfig(Properties config, String key)
static Date	getDate()
static Date	getMinuteDate()
static <T> String	joinString(T... elements)
static String	keep(String string, int length)
static String	keep(String string, int length, String append)
static <T, F> Map<F,T>	listToMap(List<T> list, Function<T,F> keyMapper)
static <T, F> Map<F,T>	listToMap(List<T> list, Function<T,F> keyMapper, UnaryOperator<T> valueMapper, Comparator<? super T> comparator, Predicate<T> filter)
static <T, F, K> Map<F,T>	listToMapSorted(List<T> list, Function<T,F> keyMapper, UnaryOperator<T> valueMapper, K[] sortKeys, Predicate<T> filter)
static <T, F, K> Map<F,T>	listToMapSorted(List<T> list, Function<T,F> keyMapper, K[] sortKeys)
static boolean	notEmpty(File file)
static boolean	notEmpty(Number value)
static boolean	notEmpty(Object[] value)
static boolean	notEmpty(String value)
static boolean	notEmpty(String[] value)
static boolean	notEmpty(Collection<?> value)
static boolean	notEmpty(Map<?,?> value)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

dontNeedEncoding

private static BitSet dontNeedEncoding

caseDiff

private static final int caseDiff

另请参阅:

• 常量字段值

构造器详细资料

CommonUtils

private CommonUtils()

方法详细资料

listToMap

public static <T,
F> Map<F,T> listToMap(List<T> list,
 Function<T,F> keyMapper)

类型参数:

T -

F -

参数:

list -

keyMapper -

返回:

listToMapSorted

public static <T,
F,
K> Map<F,T> listToMapSorted(List<T> list,
 Function<T,F> keyMapper,
 K[] sortKeys)

类型参数:

T -

F -

参数:

list -

keyMapper -

sortKeys -

返回:

listToMapSorted

public static <T,
F,
K> Map<F,T> listToMapSorted(List<T> list,
 Function<T,F> keyMapper,
 UnaryOperator<T> valueMapper,
 K[] sortKeys,
 Predicate<T> filter)

类型参数:

T -

F -

参数:

list -

keyMapper -

valueMapper -

sortKeys -

filter -

返回:

listToMap

public static <T,
F> Map<F,T> listToMap(List<T> list,
 Function<T,F> keyMapper,
 UnaryOperator<T> valueMapper,
 Comparator<? super T> comparator,
 Predicate<T> filter)

类型参数:

T -

F -

参数:

list -

keyMapper -

valueMapper -

comparator -

filter -

返回:

encodeURI

public static String encodeURI(String s)

joinString

@SafeVarargs
public static <T> String joinString(T... elements)

参数:

elements -

返回:

拼接后的文本

keep

public static String keep(String string,
 int length)

参数:

string -

length -

返回:

截取后的文本

keep

public static String keep(String string,
 int length,
 String append)

参数:

string -

length -

append -

返回:

截取后的文本

getDate

public static Date getDate()

返回:

当前日期

getMinuteDate

public static Date getMinuteDate()

返回:

精确到分钟的当前日期

notEmpty

public static boolean notEmpty(String value)

参数:

value -

返回:

是否为非空

empty

public static boolean empty(String value)

参数:

value -

返回:

是否为空

notEmpty

public static boolean notEmpty(Number value)

参数:

value -

返回:

是否非空

empty

public static boolean empty(Number value)

参数:

value -

返回:

是否为空

empty

public static boolean empty(Map<?,?> value)

参数:

value -

返回:

是否为空

notEmpty

public static boolean notEmpty(Collection<?> value)

参数:

value -

返回:

是否非空

notEmpty

public static boolean notEmpty(Map<?,?> value)

参数:

value -

返回:

是否非空

notEmpty

public static boolean notEmpty(File file)

参数:

file -

返回:

是否非空

empty

public static boolean empty(File file)

参数:

file -

返回:

是否为空

notEmpty

public static boolean notEmpty(String[] value)

参数:

value -

返回:

是否非空

notEmpty

public static boolean notEmpty(Object[] value)

参数:

value -

返回:

是否非空

empty

public static boolean empty(Object[] value)

参数:

value -

返回:

是否为空

getConfig

public static String getConfig(Properties config,
 String key)