com.qiniu.util

Class StringUtils

java.lang.Object

com.qiniu.util.StringUtils

public final class StringUtils
extends java.lang.Object

字符串连接工具类

Method Summary

Modifier and Type	Method and Description
static boolean	inStringArray(java.lang.String s, java.lang.String[] array)
static boolean	isNullOrEmpty(java.lang.String s)
static java.lang.String	join(java.util.Collection list, java.lang.String sep)
static java.lang.String	join(java.util.Collection list, java.lang.String sep, java.lang.String prefix)
static java.lang.String	join(java.lang.Object[] array, java.lang.String sep)
static java.lang.String	join(java.lang.Object[] array, java.lang.String sep, java.lang.String prefix) 以指定的分隔符来进行字符串元素连接
static java.lang.String	jsonJoin(java.lang.String[] array) 以json元素的方式连接字符串中元素
static java.lang.String	md5Lower(java.lang.String src)
static byte[]	utf8Bytes(java.lang.String data)
static java.lang.String	utf8String(byte[] data)

Methods inherited from class java.lang.Object

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

Method Detail

join

public static java.lang.String join(java.lang.Object[] array,
                                    java.lang.String sep)

See Also:

join(Object[] array, String sep, String prefix)

join

public static java.lang.String join(java.util.Collection list,
                                    java.lang.String sep)

See Also:

join(Object[] array, String sep, String prefix)

join

public static java.lang.String join(java.util.Collection list,
                                    java.lang.String sep,
                                    java.lang.String prefix)

See Also:

join(Object[] array, String sep, String prefix)

join

public static java.lang.String join(java.lang.Object[] array,
                                    java.lang.String sep,
                                    java.lang.String prefix)

以指定的分隔符来进行字符串元素连接

例如有字符串数组array和连接符为逗号(,) String[] array = new String[] { "hello", "world", "qiniu", "cloud","storage" }; 那么得到的结果是: hello,world,qiniu,cloud,storage

Parameters:

array - 需要连接的对象数组

sep - 元素连接之间的分隔符

prefix - 前缀字符串

Returns:

连接好的新字符串

jsonJoin

public static java.lang.String jsonJoin(java.lang.String[] array)

以json元素的方式连接字符串中元素

例如有字符串数组array String[] array = new String[] { "hello", "world", "qiniu", "cloud","storage" }; 那么得到的结果是: "hello","world","qiniu","cloud","storage"

Parameters:

array - 需要连接的字符串数组

Returns:

以json元素方式连接好的新字符串

isNullOrEmpty

public static boolean isNullOrEmpty(java.lang.String s)

inStringArray

public static boolean inStringArray(java.lang.String s,
                                    java.lang.String[] array)

utf8Bytes

public static byte[] utf8Bytes(java.lang.String data)

utf8String

public static java.lang.String utf8String(byte[] data)

md5Lower

public static java.lang.String md5Lower(java.lang.String src)
                                 throws java.io.UnsupportedEncodingException,
                                        java.security.NoSuchAlgorithmException

Throws:

java.io.UnsupportedEncodingException

java.security.NoSuchAlgorithmException