UTF-8与GBK互转

import java.io.UnsupportedEncodingException;import java.net.URLDecoder;import java.net.URLEncoder;public class Test {public static void main(String[] args){//测试中文，英文，字符转换String str = "中华人民共和国 china !@#$%^,./";try {str = URLEncoder.encode(str, "UTF-8");System.out.println("UTF-8:"+str);System.out.println("G B K:"+URLDecoder.decode(str,"UTF-8"));} catch (UnsupportedEncodingException e) {e.printStackTrace();}}}

后台输出：
UTF-8:%E4%B8%AD%E5%8D%8E%E4%BA%BA%E6%B0%91%E5%85%B1%E5%92%8C%E5%9B%BD+china+%21%40%23%24%25%5E%2C.%2F
G B K:中华人民共和国 china !@#$%^,./