如何传递URL中带"&“符号的参数值

var name = "John";
var age = 25;
var encodedParams = "name=" + encodeURIComponent(name) + "%26age=" + encodeURIComponent(age);
var url = "http://example.com/api?" + encodedParams;

import java.net.URLDecoder;
import java.io.UnsupportedEncodingException;

String encodedParams = "name=John%26age=25";
String decodedParams = "";
try {
    decodedParams = URLDecoder.decode(encodedParams, "UTF-8");
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
}
System.out.println(decodedParams);