import java.net.URLDecoder;
import java.net.URLEncoder;
import java.nio.charset.Charset;



// 实例代码

 String encode = URLEncoder.encode("abcd+ggd pp", "UTF-8");

        System.out.println("encode:" + encode);

        String decode = URLDecoder.decode(encode, "UTF-8");
        System.out.println("decode:" + decode);

解决url中将URL特定字符进行转义

前端解决URL特定字符转义的处理方式，参阅encodeURIComponent：https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent

source URL：https://baike.baidu.com/item/%E8%BD%AC%E4%B9%89%E5%AD%97%E7%AC%A6/86397?fr=aladdin

import java.net.URLDecoder;
import java.net.URLEncoder;
import java.nio.charset.Charset;

URL转义特定字符