Java中的HTTP URL地址编码

import java.net.URLEncoder;
import java.net.URLDecoder;

public class URLCodec {
    public static void main(String[] args) {
        String url = "https://www.example.com?query=你好，世界！";
        String encodedURL = encodeURL(url);
        System.out.println("Encoded URL: " + encodedURL);

        String decodedURL = decodeURL(encodedURL);
        System.out.println("Decoded URL: " + decodedURL);
    }

    public static String encodeURL(String url) {
        try {
            return URLEncoder.encode(url, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return null;
        }
    }

    public static String decodeURL(String encodedURL) {
        try {
            return URLDecoder.decode(encodedURL, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return null;
        }
    }
}