native2ascii转码工具的使用

native2ascii转码工具是JDK自带的一种,方便我们将非unicode的编码文件转为unicode格式的文件，位置一般是位于JAVA_HOME/bin目录下。

Why?

在做Java开发的时候，常常会出现一些乱码，或者无法正确识别或读取的文件，比如常见的validator验证用的消息资源（properties）文 件就需要进行Unicode重新编码。原因是java默认的编码方式为Unicode，而计算机系统编码常常是GBK等编码。需要将系统的编码转换 为java正确识别的编码问题就解决

语法格式:

native2ascii -[options] [intputfile] [outputfile]

语法格式说明:

-[options]：表示命令开关，有两个选项可供选择

　　-reverse：将Unicode编码转为本地或者指定编码，不指定编码情况下，将转为本地编码。

　　-encoding encoding_name：转换为指定编码，encoding_name为编码名称。

　　 [inputfile [outputfile]]

　　 inputfile：表示输入文件全名。

　　 outputfile：输出文件名。如果缺少此参数，将输出到控制台。

举例说明：

1.不指定输出文件的输出位置,打印在当前的dos界面

2.  将指定的文件输出转为unicode码到当前目录下的new.properties文件中

native2ascii  old.properties new.properties

3.将当前的unicode码的文件new.properties转为本地编码的old.properties

native2ascii  new.properties old.properties

注意:前三种的写法都是采用的是相对路径,我们需要在cd   到dos界面下,执行native2ascii  old.properties  new.properties命令,比较麻烦

另外我们提供一种比较简便的方法.用.bat来代替执行.

4.自定义一个目录，提供两个bat文件,双击执行就ok

change.bat

D:\Java\bin\native2ascii F:\国际化\old.properties F:\国际化\new.properties

ReturnChange.bat

D:\Java\bin\native2ascii -reverse F:\国际化\new.properties F:\国际化\old.properties

注意:针对数字跟字母,转换前后一致。

衍生阅读：

Basic Encoding Set (contained in lib/rt.jar)
Supported by java.nio, java.io and java.lang APIs

Canonical Name for java.nio API	Canonical Name for java.io and java.lang API	Description
US-ASCII	ASCII	American Standard Code for Information Interchange
windows-1250	Cp1250	Windows Eastern European
windows-1251	Cp1251	Windows Cyrillic
windows-1252	Cp1252	Windows Latin-1
windows-1253	Cp1253	Windows Greek
windows-1254	Cp1254	Windows Turkish
windows-1257	Cp1257	Windows Baltic
ISO-8859-1	ISO8859_1	ISO 8859-1, Latin Alphabet No. 1
ISO-8859-2	ISO8859_2	Latin Alphabet No. 2
ISO-8859-4	ISO8859_4	Latin Alphabet No. 4
ISO-8859-5	ISO8859_5	Latin/Cyrillic Alphabet
ISO-8859-7	ISO8859_7	Latin/Greek Alphabet
ISO-8859-9	ISO8859_9	Latin Alphabet No. 5
ISO-8859-13	ISO8859_13	Latin Alphabet No. 7
ISO-8859-15	ISO8859_15	Latin Alphabet No. 9
KOI8-R	KOI8_R	KOI8-R, Russian
UTF-8	UTF8	Eight-bit UCS Transformation Format
UTF-16	UTF-16	Sixteen-bit UCS Transformation Format, byte order identified by an optional byte-order mark
UTF-16BE	UnicodeBigUnmarked	Sixteen-bit Unicode Transformation Format, big-endian byte order
UTF-16LE	UnicodeLittleUnmarked	Sixteen-bit Unicode Transformation Format, little-endian byte order
Not available	UnicodeBig	Sixteen-bit Unicode Transformation Format, big-endian byte order, with byte-order mark
Not available	UnicodeLittle	Sixteen-bit Unicode Transformation Format, little-endian byte order, with byte-order mark

Extended Encoding Set (contained in lib/charsets.jar)
Supported by java.nio, java.io and java.lang APIs

Canonical Name for java.nio API	Canonical Name for java.io and java.lang API	Description
windows-1255	Cp1255	Windows Hebrew
windows-1256	Cp1256	Windows Arabic
windows-1258	Cp1258	Windows Vietnamese
ISO-8859-3	ISO8859_3	Latin Alphabet No. 3
ISO-8859-6	ISO8859_6	Latin/Arabic Alphabet
ISO-8859-8	ISO8859_8	Latin/Hebrew Alphabet
windows-31j	MS932	Windows Japanese
EUC-JP	EUC_JP	JISX 0201, 0208 and 0212, EUC encoding Japanese
x-EUC-JP-LINUX	EUC_JP_LINUX	JISX 0201, 0208 , EUC encoding Japanese
Shift_JIS	SJIS	Shift-JIS, Japanese
ISO-2022-JP	ISO2022JP	JIS X 0201, 0208, in ISO 2022 form, Japanese
x-mswin-936	MS936	Windows Simplified Chinese
GB18030	GB18030	Simplified Chinese, PRC standard
x-EUC-CN	EUC_CN	GB2312, EUC encoding, Simplified Chinese
GBK	GBK	GBK, Simplified Chinese
ISCII91	ISCII91	ISCII91 encoding of Indic scripts
x-windows-949	MS949	Windows Korean
EUC-KR	EUC_KR	KS C 5601, EUC encoding, Korean
ISO-2022-KR	ISO2022KR	ISO 2022 KR, Korean
x-windows-950	MS950	Windows Traditional Chinese
x-MS950-HKSCS	MS950_HKSCS	Windows Traditional Chinese with Hong Kong extensions
x-EUC-TW	EUC_TW	CNS11643 (Plane 1-3), EUC encoding, Traditional Chinese
Big5	Big5	Big5, Traditional Chinese
Big5-HKSCS	Big5_HKSCS	Big5 with Hong Kong extensions, Traditional Chinese
TIS-620	TIS620	TIS620, Thai

Extended Encoding Set (contained in lib/charsets.jar)
Supported by java.io and java.lang APIs

Canonical Name	Description
Big5_Solaris	Big5 with seven additional Hanzi ideograph character mappings for the Solaris zh_TW.BIG5 locale
Cp037	USA, Canada (Bilingual, French), Netherlands, Portugal, Brazil, Australia
Cp273	IBM Austria, Germany
Cp277	IBM Denmark, Norway
Cp278	IBM Finland, Sweden
Cp280	IBM Italy
Cp284	IBM Catalan/Spain, Spanish Latin America
Cp285	IBM United Kingdom, Ireland
Cp297	IBM France
Cp420	IBM Arabic
Cp424	IBM Hebrew
Cp437	MS-DOS United States, Australia, New Zealand, South Africa
Cp500	EBCDIC 500V1
Cp737	PC Greek
Cp775	PC Baltic
Cp838	IBM Thailand extended SBCS
Cp850	MS-DOS Latin-1
Cp852	MS-DOS Latin-2
Cp855	IBM Cyrillic
Cp856	IBM Hebrew
Cp857	IBM Turkish
Cp858	Variant of Cp850 with Euro character
Cp860	MS-DOS Portuguese
Cp861	MS-DOS Icelandic
Cp862	PC Hebrew
Cp863	MS-DOS Canadian French
Cp864	PC Arabic
Cp865	MS-DOS Nordic
Cp866	MS-DOS Russian
Cp868	MS-DOS Pakistan
Cp869	IBM Modern Greek
Cp870	IBM Multilingual Latin-2
Cp871	IBM Iceland
Cp874	IBM Thai
Cp875	IBM Greek
Cp918	IBM Pakistan (Urdu)
Cp921	IBM Latvia, Lithuania (AIX, DOS)
Cp922	IBM Estonia (AIX, DOS)
Cp930	Japanese Katakana-Kanji mixed with 4370 UDC, superset of 5026
Cp933	Korean Mixed with 1880 UDC, superset of 5029
Cp935	Simplified Chinese Host mixed with 1880 UDC, superset of 5031
Cp937	Traditional Chinese Host miexed with 6204 UDC, superset of 5033
Cp939	Japanese Latin Kanji mixed with 4370 UDC, superset of 5035
Cp942	IBM OS/2 Japanese, superset of Cp932
Cp942C	Variant of Cp942
Cp943	IBM OS/2 Japanese, superset of Cp932 and Shift-JIS
Cp943C	Variant of Cp943
Cp948	OS/2 Chinese (Taiwan) superset of 938
Cp949	PC Korean
Cp949C	Variant of Cp949
Cp950	PC Chinese (Hong Kong, Taiwan)
Cp964	AIX Chinese (Taiwan)
Cp970	AIX Korean
Cp1006	IBM AIX Pakistan (Urdu)
Cp1025	IBM Multilingual Cyrillic: Bulgaria, Bosnia, Herzegovinia, Macedonia (FYR)
Cp1026	IBM Latin-5, Turkey
Cp1046	IBM Arabic - Windows
Cp1097	IBM Iran (Farsi)/Persian
Cp1098	IBM Iran (Farsi)/Persian (PC)
Cp1112	IBM Latvia, Lithuania
Cp1122	IBM Estonia
Cp1123	IBM Ukraine
Cp1124	IBM AIX Ukraine
Cp1140	Variant of Cp037 with Euro character
Cp1141	Variant of Cp273 with Euro character
Cp1142	Variant of Cp277 with Euro character
Cp1143	Variant of Cp278 with Euro character
Cp1144	Variant of Cp280 with Euro character
Cp1145	Variant of Cp284 with Euro character
Cp1146	Variant of Cp285 with Euro character
Cp1147	Variant of Cp297 with Euro character
Cp1148	Variant of Cp500 with Euro character
Cp1149	Variant of Cp871 with Euro character
Cp1381	IBM OS/2, DOS People's Republic of China (PRC)
Cp1383	IBM AIX People's Republic of China (PRC)
Cp33722	IBM-eucJP - Japanese (superset of 5050)
ISO2022_CN_CNS	CNS11643 in ISO 2022 CN form, Traditional Chinese (conversion from Unicode only)
ISO2022_CN_GB	GB2312 in ISO 2022 CN form, Simplified Chinese (conversion from Unicode only)
JISAutoDetect	Detects and converts from Shift-JIS, EUC-JP, ISO 2022 JP (conversion to Unicode only)
MS874	Windows Thai
MacArabic	Macintosh Arabic
MacCentralEurope	Macintosh Latin-2
MacCroatian	Macintosh Croatian
MacCyrillic	Macintosh Cyrillic
MacDingbat	Macintosh Dingbat
MacGreek	Macintosh Greek
MacHebrew	Macintosh Hebrew
MacIceland	Macintosh Iceland
MacRoman	Macintosh Roman
MacRomania	Macintosh Romania
MacSymbol	Macintosh Symbol
MacThai	Macintosh Thai
MacTurkish	Macintosh Turkish
MacUkraine	Macintosh Ukraine

参考链接:1.http://www.cr173.com/html/26685_1.html

2.http://blog.csdn.net/love_xsq/article/details/41911681