java 编码转换

  

package test;

import java.util.Map;

public class Test3
{
    public static Map<String,Object> map;
    public static void main(String[] args) throws Exception
    {
        String str = "严";
//        "GBK","UTF-8"
        byte[] bytes = str.getBytes("UTF-8");
        printHexString(bytes);
        System.out.println();
        String str2 = new String(bytes,"UTF-8");
        System.out.println(str2);
        
    }
    
    //将指定byte数组以16进制的形式打印到控制台   
    public static void printHexString( byte[] b) {     
       for (int i = 0; i < b.length; i++) {    
         String hex = Integer.toHexString(b[i] & 0xFF);    
         if (hex.length() == 1) {    
           hex = '0' + hex;    
         }    
         System.out.print(hex.toUpperCase() );    
       }    
      
    }  
}

 相关函数

byte[] bytes = str.getBytes("UTF-8");

 以指定的字符集对字符串进行编码,结果存放在byte数组中

String str2 = new String(bytes,"UTF-8");

 以指定的字符集对给定的byte数组进行解码

"严"的UTF编码为:E4B8A5,GBK编码为:D1CF