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

Question

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

 

 

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

 

Answer 1

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。