TA的每日心情 | 开心 2021-3-12 23:18 |
---|
签到天数: 2 天 [LV.1]初来乍到
|
/*
* Copyright (c) 2002-2003 Che, Dong Email: chedongATbigfoot.com/chedongATchedong.com
* $Id: HelloUnicode.java,v 1.3 2003/03/09 08:41:46 chedong Exp $
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
/**
* 目的:
* 测试不同字符编码解码方式对多字节编码(中文)处理
* 的影响 输入:
* 可以从命令行输入测试字符串 输出:
* 测试1 按照不同解码方式处理字符串,
* 并按不同编码方式写入文件
* 测试2 按照不同解码方式从文件中将字符串读出
* @author Che, Dong
*/
class HelloUnicode {
/**
* main entrance
* @param args command line arguments
*/
public static void main(String[] args) {
String hello = "Hello world 世界你好";
//read from command line input
if (args.length > 0) {
hello = args[0];
}
try {
/*
* 试验1: 从测试字符串按系统缺省编码方式解码,并写入文件
*/
System.out.println(">>>>testing1: write hello world to files<<<<");
System.out.println("[test 1-1]: with system default encoding="
+ System.getProperty("file.encoding") + "
string=" + hello
+ " length=" + hello.length());
printCharArray(hello);
writeFile("hello.orig.HTML", hello);
//把字符串按GB2312解码
hello = new String(hello.getBytes(), "GB2312");
System.out.println(
"[test 1-2]: getBytes with platform default encoding and decoding as gb2312:
string="
+ hello + " length=" + hello.length());
writeFile("hello.gb2312.html", hello);
printCharArray(hello);
//把字符串按UTF8解码成字节流,并打印相应的字节
hello = new String(hello.getBytes("UTF8"));
System.out.println("[test 1-3]: convert string to UTF8
string="
+ hello + " length=" + hello.length());
writeFile("hello.utf8.html", hello);
printCharArray(hello);
/*
* 试验2: 从试验1的输出文件中读取,并按照不同方式解码
*/
System.out.println(
">>>>testing2: reading and decoding from files<<<<");
//first file: encoding with system default
hello = readFile("hello.orig.html");
System.out.println(
"[test 2-1]: read hello.orig.html: decoding with system default encoding
string="
+ hello + " length=" + hello.length());
printCharArray(hello);
//second file: decoding from GBK
hello = readFile("hello.gb2312.html");
// hello = new String(hello.getBytes(), "GB2312");
System.out.println(
"[test 2-2]: read hello.gb2312.html: decoding as GB2312
string="
+ hello + " length=" + hello.length());
printCharArray(hello);
//third file: decoding from UTF8
hello = readFile("hello.utf8.html");
hello = new String(hello.getBytes(), "UTF8");
System.out.println(
"[test 2-3]: read hello.utf8.html: decoding as UTF8
string="
+ hello + " length=" + hello.length());
printCharArray(hello);
} catch (Exception e) {
System.out.println(e.toString());
}
}
/**
* print char array
* @param inStr input string
*/
public static void printCharArray(String inStr) {
char[] myBuffer = inStr.toCharArray();
//list each Charactor in byte value, short value, and UnicodeBlock Mapping
for (int i = 0; i < inStr.length(); i++) {
byte b = (byte) myBuffer;
short s = (short) myBuffer;
String hexB = Integer.toHexString(b).toUpperCase();
String hexS = Integer.toHexString(s).toUpperCase();
StringBuffer sb = new StringBuffer();
//print char
sb.append("char[");
sb.append(i);
sb.append("]="");
sb.append(myBuffer);
sb.append("" ");
//byte value
sb.append("byte=");
sb.append(b);
sb.append(" \u");
sb.append(hexB);
sb.append(" ");
//short value
sb.append("short=");
sb.append(s);
sb.append(" \u");
sb.append(hexS);
sb.append(" ");
//Unicode Block
sb.append(Character.UnicodeBlock.of(myBuffer));
System.out.println(sb.toString());
}
System.out.println();
}
/**
* write content to output file
* @param fileName output file name
* @param content file content to write
*/
private static void writeFile(String fileName, String content) {
try {
File tmpFile = new File(fileName);
if (tmpFile.exists()) {
tmpFile.delete();
}
FileWriter fw = new FileWriter(fileName, true);
fw.write(content);
fw.close();
} catch (Exception e) {
System.out.println(e.toString());
}
}
/**
* read content from input file
* @param fileName input file name
* @return String file content
*/
private static String readFile(String fileName) {
try {
BufferedReader fr = new BufferedReader(new FileReader(fileName));
StringBuffer out = new StringBuffer();
String thisLine = new String();
while (thisLine != null) {
thisLine = fr.readLine();
if (thisLine != null) {
out.append(thisLine);
}
}
fr.close();
return out.toString();
} catch (Exception e) {
System.out.print(e.toString());
return null;
}
}
}
运行结果:
C:ja>java HelloUnicode
>>>>testing1: write hello world to files<<<<
[test 1-1]: with system default encoding=GBK
string=Hello world 世界你好 length=16
char[0]="H" byte=72 u48 short=72 u48 BASIC_LATIN
char[1]="e" byte=101 u65 short=101 u65 BASIC_LATIN
char[2]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[3]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[4]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[5]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[6]="w" byte=119 u77 short=119 u77 BASIC_LATIN
char[7]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[8]="r" byte=114 u72 short=114 u72 BASIC_LATIN
char[9]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[10]="d" byte=100 u64 short=100 u64 BASIC_LATIN
char[11]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[12]="世" byte=22 u16 short=19990 u4E16 CJK_UNIFIED_IDEOGRAPHS
char[13]="界" byte=76 u4C short=30028 u754C CJK_UNIFIED_IDEOGRAPHS
char[14]="你" byte=96 u60 short=20320 u4F60 CJK_UNIFIED_IDEOGRAPHS
char[15]="好" byte=125 u7D short=22909 u597D CJK_UNIFIED_IDEOGRAPHS
[test 1-2]: getBytes with platform default encoding and decoding as gb2312:
string=Hello world 世界你好 length=16
char[0]="H" byte=72 u48 short=72 u48 BASIC_LATIN
char[1]="e" byte=101 u65 short=101 u65 BASIC_LATIN
char[2]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[3]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[4]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[5]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[6]="w" byte=119 u77 short=119 u77 BASIC_LATIN
char[7]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[8]="r" byte=114 u72 short=114 u72 BASIC_LATIN
char[9]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[10]="d" byte=100 u64 short=100 u64 BASIC_LATIN
char[11]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[12]="世" byte=22 u16 short=19990 u4E16 CJK_UNIFIED_IDEOGRAPHS
char[13]="界" byte=76 u4C short=30028 u754C CJK_UNIFIED_IDEOGRAPHS
char[14]="你" byte=96 u60 short=20320 u4F60 CJK_UNIFIED_IDEOGRAPHS
char[15]="好" byte=125 u7D short=22909 u597D CJK_UNIFIED_IDEOGRAPHS
[test 1-3]: convert string to UTF8
string=Hello world 涓��浣�ソ length=18
char[0]="H" byte=72 u48 short=72 u48 BASIC_LATIN
char[1]="e" byte=101 u65 short=101 u65 BASIC_LATIN
char[2]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[3]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[4]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[5]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[6]="w" byte=119 u77 short=119 u77 BASIC_LATIN
char[7]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[8]="r" byte=114 u72 short=114 u72 BASIC_LATIN
char[9]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[10]="d" byte=100 u64 short=100 u64 BASIC_LATIN
char[11]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[12]="涓" byte=-109 uFFFFFF93 short=28051 u6D93 CJK_UNIFIED_IDEO
GRAPHS
char[13]="�" byte=43 u2B short=26667 u682B CJK_UNIFIED_IDEOGRAPHS
char[14]="�" byte=107 u6B short=26219 u666B CJK_UNIFIED_IDEOGRAPHS
char[15]="浣" byte=99 u63 short=28003 u6D63 CJK_UNIFIED_IDEOGRAPHS
char[16]="�" byte=-78 uFFFFFFB2 short=29362 u72B2 CJK_UNIFIED_IDEO
GRAPHS
char[17]="ソ" byte=-67 uFFFFFFBD short=12477 u30BD KATAKANA
>>>>testing2: reading and decoding from files<<<<
[test 2-1]: read hello.orig.html: decoding with system default encoding
string=Hello world 世界你好 length=16
char[0]="H" byte=72 u48 short=72 u48 BASIC_LATIN
char[1]="e" byte=101 u65 short=101 u65 BASIC_LATIN
char[2]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[3]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[4]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[5]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[6]="w" byte=119 u77 short=119 u77 BASIC_LATIN
char[7]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[8]="r" byte=114 u72 short=114 u72 BASIC_LATIN
char[9]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[10]="d" byte=100 u64 short=100 u64 BASIC_LATIN
char[11]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[12]="世" byte=22 u16 short=19990 u4E16 CJK_UNIFIED_IDEOGRAPHS
char[13]="界" byte=76 u4C short=30028 u754C CJK_UNIFIED_IDEOGRAPHS
char[14]="你" byte=96 u60 short=20320 u4F60 CJK_UNIFIED_IDEOGRAPHS
char[15]="好" byte=125 u7D short=22909 u597D CJK_UNIFIED_IDEOGRAPHS
[test 2-2]: read hello.gb2312.html: decoding as GB2312
string=Hello world 世界你好 length=16
char[0]="H" byte=72 u48 short=72 u48 BASIC_LATIN
char[1]="e" byte=101 u65 short=101 u65 BASIC_LATIN
char[2]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[3]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[4]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[5]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[6]="w" byte=119 u77 short=119 u77 BASIC_LATIN
char[7]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[8]="r" byte=114 u72 short=114 u72 BASIC_LATIN
char[9]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[10]="d" byte=100 u64 short=100 u64 BASIC_LATIN
char[11]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[12]="世" byte=22 u16 short=19990 u4E16 CJK_UNIFIED_IDEOGRAPHS
char[13]="界" byte=76 u4C short=30028 u754C CJK_UNIFIED_IDEOGRAPHS
char[14]="你" byte=96 u60 short=20320 u4F60 CJK_UNIFIED_IDEOGRAPHS
char[15]="好" byte=125 u7D short=22909 u597D CJK_UNIFIED_IDEOGRAPHS
[test 2-3]: read hello.utf8.html: decoding as UTF8
string=Hello world 世界你好 length=16
char[0]="H" byte=72 u48 short=72 u48 BASIC_LATIN
char[1]="e" byte=101 u65 short=101 u65 BASIC_LATIN
char[2]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[3]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[4]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[5]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[6]="w" byte=119 u77 short=119 u77 BASIC_LATIN
char[7]="o" byte=111 u6F short=111 u6F BASIC_LATIN
char[8]="r" byte=114 u72 short=114 u72 BASIC_LATIN
char[9]="l" byte=108 u6C short=108 u6C BASIC_LATIN
char[10]="d" byte=100 u64 short=100 u64 BASIC_LATIN
char[11]=" " byte=32 u20 short=32 u20 BASIC_LATIN
char[12]="世" byte=22 u16 short=19990 u4E16 CJK_UNIFIED_IDEOGRAPHS
char[13]="界" byte=76 u4C short=30028 u754C CJK_UNIFIED_IDEOGRAPHS
char[14]="你" byte=96 u60 short=20320 u4F60 CJK_UNIFIED_IDEOGRAPHS
char[15]="好" byte=125 u7D short=22909 u597D CJK_UNIFIED_IDEOGRAPHS
源码下载:http://file.javaxxz.com/2014/10/1/045204531.zip |
|