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常用字符编码
在程序中如果没有处理好字符的编码，就有可能出现乱码问题。下面我们一起为大家介绍在开 发中常见的编码有 哪些。
在计算机世界里，任何的文字都是以指定的编码方式存在的。 常见编码有: |S08859-1、GBK/GB2312、 unicode、 UTF。
iso8859-1: 编码属于单字节编码，最多只能表示0- -- -255的字符范围，主要在英文上应用。 GBK/GB2312: 中文的国际编码，专门
门用来表示汉字，是双字节编码
unicode:I java中就是使用此编码方式，也是最标准的一种编码，是使用16进制表示的编码。但此编码不兼容iso8859- 1编码。 UTF:
由于unicode不支持iso8859- 1编码，而且容易占用更多的空间，而且对于英文母也需要使用两个字节编码，这样使
用unicode不便于传输和储存，因此产生了utf编码，utt编码兼容了iso8859- 1编码，也可以用来表示所有语言字符，
不过utf是不定长编码，每个字符的长度从1- 6个字节不等，-般在中文网页中使用此编码，因为这样可以节省空 间。 造成乱码的根本原因:
1、程序使用的编码与本机的编码不统一 2、在网络中，客户端与服务端编码不统一
package IODemo; import java.io.UnsupportedEncodingException; public class
CodeDemo { //通常产生乱码的情况是，两个不兼容的编码互相转换； public static void main(String[]
args) { String info = "天命不可违";//GB2312 try { String
newInfo = new String(info.getBytes("gb2312"),"iso8859-1");
System.out.println(newInfo); String newInfo2 = new
String(newInfo.getBytes("iso8859-1"),"gb2312");
System.out.println(newInfo2); } catch (UnsupportedEncodingException e) {
e.printStackTrace(); } } }
