cn.trinea.android.common.util

类 StringUtils

java.lang.Object

cn.trinea.android.common.util.StringUtils

public class StringUtils
extends Object

String Utils

作者:

Trinea 2011-7-22

构造器概要

构造器

构造器和说明
StringUtils()

方法概要

方法

限定符和类型	方法和说明
static String	capitalizeFirstLetter(String str) capitalize first letter capitalizeFirstLetter(null) = null; capitalizeFirstLetter("") = ""; capitalizeFirstLetter("2ab") = "2ab" capitalizeFirstLetter("a") = "A" capitalizeFirstLetter("ab") = "Ab" capitalizeFirstLetter("Abc") = "Abc"
static String	fullWidthToHalfWidth(String s) transform half width char to full width char fullWidthToHalfWidth(null) = null; fullWidthToHalfWidth("") = ""; fullWidthToHalfWidth(new String(new char[] {12288})) = " "; fullWidthToHalfWidth("！
static String	getHrefInnerHtml(String href) get innerHtml from href getHrefInnerHtml(null) = "" getHrefInnerHtml("") = "" getHrefInnerHtml("mp3") = "mp3"; getHrefInnerHtml("<a innerHtml</a>") = "<a innerHtml</a>"; getHrefInnerHtml("<a>innerHtml</a>") = "innerHtml"; getHrefInnerHtml("<a<a>innerHtml</a>") = "innerHtml"; getHrefInnerHtml("<a href="baidu.com">innerHtml</a>") = "innerHtml"; getHrefInnerHtml("<a href="baidu.com" title="baidu">innerHtml</a>") = "innerHtml"; getHrefInnerHtml(" <a>innerHtml</a> ") = "innerHtml"; getHrefInnerHtml("<a>innerHtml</a></a>") = "innerHtml"; getHrefInnerHtml("jack<a>innerHtml</a></a>") = "innerHtml"; getHrefInnerHtml("<a>innerHtml1</a><a>innerHtml2</a>") = "innerHtml2";
static String	halfWidthToFullWidth(String s) transform full width char to half width char halfWidthToFullWidth(null) = null; halfWidthToFullWidth("") = ""; halfWidthToFullWidth(" ") = new String(new char[] {12288}); halfWidthToFullWidth("!
static String	htmlEscapeCharsToString(String source) process special char in html htmlEscapeCharsToString(null) = null; htmlEscapeCharsToString("") = ""; htmlEscapeCharsToString("mp3") = "mp3"; htmlEscapeCharsToString("mp3<") = "mp3<"; htmlEscapeCharsToString("mp3>") = "mp3\>"; htmlEscapeCharsToString("mp3&mp4") = "mp3&mp4"; htmlEscapeCharsToString("mp3"mp4") = "mp3\"mp4"; htmlEscapeCharsToString("mp3<>&"mp4") = "mp3\<\>&\"mp4";
static boolean	isBlank(String str) is null or its length is 0 or it is made by space isBlank(null) = true; isBlank("") = true; isBlank(" ") = true; isBlank("a") = false; isBlank("a ") = false; isBlank(" a") = false; isBlank("a b") = false;
static boolean	isEmpty(String str) is null or its length is 0 isEmpty(null) = true; isEmpty("") = true; isEmpty(" ") = false;
static boolean	isEquals(String actual, String expected) compare two string
static String	nullStrToEmpty(String str) null string to empty string nullStrToEmpty(null) = ""; nullStrToEmpty("") = ""; nullStrToEmpty("aa") = "aa";
static String	utf8Encode(String str) encoded in utf-8 utf8Encode(null) = null utf8Encode("") = ""; utf8Encode("aa") = "aa"; utf8Encode("啊啊啊啊") = "%E5%95%8A%E5%95%8A%E5%95%8A%E5%95%8A";
static String	utf8Encode(String str, String defultReturn) encoded in utf-8, if exception, return defultReturn

从类继承的方法 java.lang.Object

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

构造器详细资料

StringUtils

public StringUtils()

方法详细资料

isBlank

public static boolean isBlank(String str)

is null or its length is 0 or it is made by space

 isBlank(null) = true;
 isBlank("") = true;
 isBlank("  ") = true;
 isBlank("a") = false;
 isBlank("a ") = false;
 isBlank(" a") = false;
 isBlank("a b") = false;
 

参数:

str -

返回:

if string is null or its size is 0 or it is made by space, return true, else return false.

isEmpty

public static boolean isEmpty(String str)

is null or its length is 0

 isEmpty(null) = true;
 isEmpty("") = true;
 isEmpty("  ") = false;
 

参数:

str -

返回:

if string is null or its size is 0, return true, else return false.

isEquals

public static boolean isEquals(String actual,
               String expected)

compare two string

参数:

actual -

expected -

返回:

另请参阅:

ObjectUtils.isEquals(Object, Object)

nullStrToEmpty

public static String nullStrToEmpty(String str)

null string to empty string

 nullStrToEmpty(null) = "";
 nullStrToEmpty("") = "";
 nullStrToEmpty("aa") = "aa";
 

参数:

str -

返回:

capitalizeFirstLetter

public static String capitalizeFirstLetter(String str)

capitalize first letter

 capitalizeFirstLetter(null)     =   null;
 capitalizeFirstLetter("")       =   "";
 capitalizeFirstLetter("2ab")    =   "2ab"
 capitalizeFirstLetter("a")      =   "A"
 capitalizeFirstLetter("ab")     =   "Ab"
 capitalizeFirstLetter("Abc")    =   "Abc"
 

参数:

str -

返回:

utf8Encode

public static String utf8Encode(String str)

encoded in utf-8

 utf8Encode(null)        =   null
 utf8Encode("")          =   "";
 utf8Encode("aa")        =   "aa";
 utf8Encode("啊啊啊啊")   = "%E5%95%8A%E5%95%8A%E5%95%8A%E5%95%8A";
 

参数:

str -

返回:

抛出:

UnsupportedEncodingException - if an error occurs

utf8Encode

public static String utf8Encode(String str,
                String defultReturn)

encoded in utf-8, if exception, return defultReturn

参数:

str -

defultReturn -

返回:

getHrefInnerHtml

public static String getHrefInnerHtml(String href)

get innerHtml from href

 getHrefInnerHtml(null)                                  = ""
 getHrefInnerHtml("")                                    = ""
 getHrefInnerHtml("mp3")                                 = "mp3";
 getHrefInnerHtml("<a innerHtml</a>")                    = "<a innerHtml</a>";
 getHrefInnerHtml("<a>innerHtml</a>")                    = "innerHtml";
 getHrefInnerHtml("<a<a>innerHtml</a>")                    = "innerHtml";
 getHrefInnerHtml("<a href="baidu.com">innerHtml</a>")               = "innerHtml";
 getHrefInnerHtml("<a href="baidu.com" title="baidu">innerHtml</a>") = "innerHtml";
 getHrefInnerHtml("   <a>innerHtml</a>  ")                           = "innerHtml";
 getHrefInnerHtml("<a>innerHtml</a></a>")                      = "innerHtml";
 getHrefInnerHtml("jack<a>innerHtml</a></a>")                  = "innerHtml";
 getHrefInnerHtml("<a>innerHtml1</a><a>innerHtml2</a>")        = "innerHtml2";
 

参数:

href -

返回:

• if href is null, return ""
• if not match regx, return source
• return the last string that match regx

htmlEscapeCharsToString

public static String htmlEscapeCharsToString(String source)

process special char in html

 htmlEscapeCharsToString(null) = null;
 htmlEscapeCharsToString("") = "";
 htmlEscapeCharsToString("mp3") = "mp3";
 htmlEscapeCharsToString("mp3<") = "mp3<";
 htmlEscapeCharsToString("mp3>") = "mp3\>";
 htmlEscapeCharsToString("mp3&mp4") = "mp3&mp4";
 htmlEscapeCharsToString("mp3"mp4") = "mp3\"mp4";
 htmlEscapeCharsToString("mp3<>&"mp4") = "mp3\<\>&\"mp4";
 

参数:

source -

返回:

fullWidthToHalfWidth

public static String fullWidthToHalfWidth(String s)

transform half width char to full width char

 fullWidthToHalfWidth(null) = null;
 fullWidthToHalfWidth("") = "";
 fullWidthToHalfWidth(new String(new char[] {12288})) = " ";
 fullWidthToHalfWidth("！＂＃＄％＆) = "!\"#$%&";
 

参数:

s -

返回:

halfWidthToFullWidth

public static String halfWidthToFullWidth(String s)

transform full width char to half width char

 halfWidthToFullWidth(null) = null;
 halfWidthToFullWidth("") = "";
 halfWidthToFullWidth(" ") = new String(new char[] {12288});
 halfWidthToFullWidth("!\"#$%&) = "！＂＃＄％＆";
 

参数:

s -

返回: