linux下File.createNewFile(“中文文件名”) 乱码问题

记录一个乱码问题

java源文件中的中文字符会以文本文件的编码进行保存
编译的时候如果不指定编码格式，jdk默认使用当前系统平台字符集进行编译，
所以javac编译要指定编码格式跟源文件保存时的编码一致。

以下是问题回放：

http://www.iteye.com/problems/80104

我今天遇到了一个中文乱码的问题，虽然现在貌似解决了，但我想了很久没想明白。希望大家帮我支支招，让我搞明白这是啥原因。

我的疑问是

我的java我的java源文件是用utf-8保存的

在solaris机器上也是用utf-8进行编译的

为什么执行的时候

String newp = new String(path.getBytes("utf-8"),encoding)

生成的文件名反而是乱码

改成

String newp = new String(path.getBytes("gbk"),encoding)

就能显示正常的中文?

为什么?这个gbk是从哪来的?

太郁闷了，大家有知道的请告诉我，感谢!

代码如下

Java代码

public static void main(String[] args) throws InterruptedException { System.getProperties().list(System.out); System.out.println("******************"); final String encoding = System.getProperty("file.encoding"); System.out.println("encoding:"+encoding); String path= "./哈haha哈AAA璎玥.txt"; System.out.println(path); // TODO file.encoding=iso8859-1 try { String newp = new String(path.getBytes("gbk"),encoding); System.out.println(newp); File file = new File(newp); boolean b = file.createNewFile(); System.out.println("file create:"+b); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }

代码的文件编码在eclipse里面选的是utf-8

然后我将该文件ftp传到solaris机器上

查看solaris机器上jdk的版本

$ java -version

java version "1.5.0"

Java(TM) 2 Runtime Environment, Standard Edition (build pap64dev-20100813 (SR12 FP1 ))

IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9vmap6423-20100808 (JIT enabled)

J9VM - 20100629_60535_BHdSMr

JIT - 20100623_16197_r8

GC - 20100211_AA)

JCL - 20100813

$ locale

LANG="zh_CN.UTF-8"

LC_COLLATE="C"

LC_CTYPE="C"

LC_MONETARY="C"

LC_NUMERIC="C"

LC_TIME="C"

LC_MESSAGES="C"

LC_ALL=

指定utf-8 对源文件进行编译

$ javac -encoding utf-8 FileTest.java

用javap查看一下

$ javap -verbose FileTest

Compiled from "FileTest.java"

public class FileTest extends java.lang.Object

SourceFile: "FileTest.java"

minor version: 0

major version: 49

Constant pool:

const #1 = Method #29.#40; // java/lang/Object."<init>":()V

const #2 = Method #41.#42; // java/lang/System.getProperties:()Ljava/util/Properties;

const #3 = Field #41.#43; // java/lang/System.out:Ljava/io/PrintStream;

const #4 = Method #44.#45; // java/util/Properties.list:(Ljava/io/PrintStream;)V

const #5 = String #46; // ******************

const #6 = Method #47.#48; // java/io/PrintStream.println:(Ljava/lang/String;)V

const #7 = String #49; // file.encoding

const #8 = Method #41.#50; // java/lang/System.getProperty:(Ljava/lang/String;)Ljava/lang/String;

const #9 = class #51; // java/lang/StringBuilder

const #10 = Method #9.#40; // java/lang/StringBuilder."<init>":()V

const #11 = String #52; // encoding:

const #12 = Method #9.#53; // java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;

const #13 = Method #9.#54; // java/lang/StringBuilder.toString:()Ljava/lang/String;

const #14 = String #55; // ./?haha?AAA??.txt

const #15 = class #56; // java/lang/String

const #16 = String #57; // gbk

const #46 = Asciz ******************;

const #47 = class #79; // java/io/PrintStream

const #48 = NameAndType #80:#81;// println:(Ljava/lang/String;)V

const #49 = Asciz file.encoding;

const #50 = NameAndType #82:#83;// getProperty:(Ljava/lang/String;)Ljava/lang/String;

public FileTest();

Code:

Stack=1, Locals=1, Args_size=1

0: aload_0

1: invokespecial #1; //Method java/lang/Object."<init>":()V

4: return

LineNumberTable:

line 6: 0

public static void main(java.lang.String[]) throws java.lang.InterruptedException;

Code:

Stack=4, Locals=6, Args_size=1

12: ldc #5; //String ******************

14: invokevirtual #6; //Method java/io/PrintStream.println:(Ljava/lang/String;)V

17: ldc #7; //String file.encoding

19: invokestatic #8; //Method java/lang/System.getProperty:(Ljava/lang/String;)Ljava/lang/String;

22: astore_1

23: getstatic #3; //Field java/lang/System.out:Ljava/io/PrintStream;

26: new #9; //class java/lang/StringBuilder

29: dup

30: invokespecial #10; //Method java/lang/StringBuilder."<init>":()V

33: ldc #11; //String encoding:

35: invokevirtual #12; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;

38: aload_1

39: invokevirtual #12; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;

42: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;

45: invokevirtual #6; //Method java/io/PrintStream.println:(Ljava/lang/String;)V

48: ldc #14; //String ./?haha?AAA??.txt

50: astore_2

51: getstatic #3; //Field java/lang/System.out:Ljava/io/PrintStream;

54: aload_2

55: invokevirtual #6; //Method java/io/PrintStream.println:(Ljava/lang/String;)V

58: new #15; //class java/lang/String

61: dup

62: aload_2

63: ldc #16; //String gbk

65: invokevirtual #17; //Method java/lang/String.getBytes:(Ljava/lang/String;)[B

68: aload_1

69: invokespecial #18; //Method java/lang/String."<init>":([BLjava/lang/String;)V

// 太长显示不了，删除掉

}

运行代码 注意我未指定 –Dfile.encoding=”utf-8”

而是默认 iso8859-1

$ java FileTest.

The java class is not found: FileTest.

$ java FileTest

-- listing properties --

java.assistive=ON

java.runtime.name=Java(TM) 2 Runtime Environment, Stand...

ibm.signalhandling.rs=false

sun.boot.library.path=/usr/java5_64/jre/bin

java.vm.version=2.3

com.ibm.oti.configuration=scar

java.vm.vendor=IBM Corporation

java.vendor.url=http://www.ibm.com/

path.separator=:

java.vm.name=IBM J9 VM

user.country=US

java.vm.specification.name=Java Virtual Machine Specification

user.dir=/data/zhjk/ISS_HOME/data/test-ouy

java.runtime.version=pap64dev-20100813 (SR12 FP1 )

java.fullversion=J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9...

java.awt.graphicsenv=sun.awt.X11GraphicsEnvironment

os.arch=ppc64

com.ibm.vm.bitmode=64

java.io.tmpdir=/tmp/

com.ibm.util.extralibs.properties=

line.separator=

java.vm.specification.vendor=Sun Microsystems Inc.

user.variant=

java.awt.fonts=

os.name=AIX

sun.java2d.fontpath=

java.jcl.version=20100813

sun.jnu.encoding=ISO8859-1

java.library.path=/usr/java5_64/jre/bin:/usr/java5_64/j...

jxe.current.romimage.version=9

com.ibm.oti.vm.bootstrap.library.path=/usr/java5_64/jre/bin

com.ibm.cpu.endian=big

java.specification.name=Java Platform API Specification

java.class.version=49.0

ibm.system.encoding=ISO8859-1

invokedviajava=

java.util.prefs.PreferencesFactory=java.util.prefs.FileSystemPreferences...

os.version=6.1

com.ibm.oti.vm.library.version=23

user.home=/data/zhjk

user.timezone=

java.awt.printerjob=sun.print.PSPrinterJob

java.specification.version=1.5

file.encoding=ISO8859-1

java.class.path=.

user.name=iss

java.vm.specification.version=1.0

java.home=/usr/java5_64/jre

sun.arch.data.model=64

java.specification.vendor=Sun Microsystems Inc.

ibm.signalhandling.sigint=true

user.language=en

com.ibm.oti.jcl.build=20100528_1023

java.vm.info=J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9...

java.version=1.5.0

java.ext.dirs=/usr/java5_64/jre/lib/ext

sun.boot.class.path=/usr/java5_64/jre/lib/vm.jar:/usr/jav...

jxe.lowest.romimage.version=9

java.vendor=IBM Corporation

file.separator=/

java.compiler=j9jit23

sun.io.unicode.encoding=UnicodeBig

ibm.signalhandling.sigchain=true

******************

encoding:ISO8859-1

./?haha?AAA??.txt

./哈haha哈AAA璎玥.txt

file create:true

结果生成的文件名是中文的 ok

------------------------------------------------------------------------------------------------------------------
问题补充：

chen_yongkai 写道

你开发和编译的机器的系统编码是GBK吧

我是在Windows xp的环境下编写的java文件
文件保存格式在eclipse里面设置的是 utf-8

------------------------------------------------------------------------------------------------------------------
问题补充：

chen_yongkai 写道

直接用

Java代码

File file = new File("./哈haha哈AAA璎玥.txt"
);
boolean b = file.createNewFile();

应该就可以了

直接用是乱码，我想你没有完整看完我的问题
乱码问题我已经解决了，但我想知道原因

------------------------------------------------------------------------------------------------------------------
问题补充：

chen_yongkai 写道

不行再试试用native2ascii

C:\Users\j>native2ascii
中文文件名
\u4e2d\u6587\u6587\u4ef6\u540d

Java代码

File file = new File("./\u4e2d\u6587\u6587\u4ef6\u540d
.txt");
boolean b = file.createNewFile();

刚试了不行

乱码问题我已经解决了，但我想知道原因

采纳的答案

2012-03-14 guazi (中级程序员)

你是用的ssh到linux去执行编译的吧，这个ssh客户端也是有编码指定的，应该是你的这个编码和系统不一致导致的。如果你在编译的时候不指定编码的话，生成的文件名应该有问题吧。

提问者对于答案的评价：
非常感谢!

我用的是winscp 刚查看了一下选项 utf-8 是auto我改成on

然后试了一次问题解决了就是winscp的原因

很感谢你

posted on 2012-03-17 09:56 hercules 阅读(4673) 评论(0) 编辑收藏举报

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