我們經常要獲取中文,數字,或者英文字符所占字節的長度,下面就列出各種編碼格式下所占字節的長度:

代碼如下:

package pack.java.midea.dao;

import java.io.UnsupportedEncodingException;

/**

* 測試;

* @author zhouhaitao

* 2012-5-17

*/

public class Test {

/**

* @param args

* @throws UnsupportedEncodingException

*/

public static void main(String[] args) throws UnsupportedEncodingException {

// TODO Auto-generated method stub

Test test = new Test();

String a = "在";

test.getStringByteLength(a);

System.out.println("--------------------------------------");

String b = "A";

test.getStringByteLength(b);

String c = "1";

test.getStringByteLength(c);

}

/**

* 獲取字符的所占字節長度;

* @param str

* @throws UnsupportedEncodingException

*/

private void getStringByteLength(String str) throws UnsupportedEncodingException{

System.out.println("\""+str+"\"字符所占的字節長度如下:");

System.out.println("ISO-8859-1:"+str.getBytes("ISO-8859-1").length);

System.out.println("UTF-8:"+str.getBytes("UTF-8").length);

System.out.println("GBK:"+str.getBytes("GBK").length);

System.out.println("GB2312:"+str.getBytes("GB2312").length);

System.out.println("GB18030:"+str.getBytes("GB18030").length);

System.out.println("UTF-16:"+str.getBytes("UTF-16").length);

}

}

控制臺輸出結果:

--------------------------------------

"在"字符所占的字節長度如下:

ISO-8859-1:1

UTF-8:3

GBK:2

GB2312:2

GB18030:2

UTF-16:4

--------------------------------------

"A"字符所占的字節長度如下:

ISO-8859-1:1

UTF-8:1

GBK:1

GB2312:1

GB18030:1

UTF-16:4

"1"字符所占的字節長度如下:

ISO-8859-1:1

UTF-8:1

GBK:1

GB2312:1

GB18030:1

UTF-16:4

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2012-05-17 22:00

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