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

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