URLEncoder URLDecoder

package com.test.javaSe02;import java.io.UnsupportedEncodingException;import java.net.URLDecoder;import java.net.URLEncoder;public class CodeTestDemo {public static void main(String[] args) throws UnsupportedEncodingException {String str="你还好吗？";String encoder=URLEncoder.encode(str,"gbk");System.out.println(encoder);String decode=URLDecoder.decode(encoder,"gbk");System.out.println(decode);}}