OAuth 授权链接里的回调地址参数丢失

比眉伴天荒 2022-02-19 19:22 400阅读 0赞

OAuth 的授权链接里有一个回调地址的参数：

https://developers.e.qq.com/oauth/authorize?client_id=123456&redirect_uri=https://www.baidu.com?platform=jiaobuchong&name=jack&state=&scope=ADS_MANAGEMENT

这个授权链接里的回调地址参数是：

https://www.baidu.com?platform=jiaobuchong&name=jack

授权后地址变成了：

https://www.baidu.com?platform=jiaobuchong&auth_code=xxxxxxx

缺失了参数 name=jack，解决方法就是对回调地址中的 query 参数 ：`platform=jiaobuchong&auth_code=xxxxxxx`进行 URLEncoder。如：

public class UrlencoderDemo { 
    
        public static void main(String[] args) throws Exception { 
            String url = "https://www.baidu.com?platform=jiaobuchong&name=jack";
            System.out.println(getEncodeQueryUrl(url));
            System.out.println(getEncodeQueryUrl("https://www.baidu.com?"));
            System.out.println(getEncodeQueryUrl("https://www.baidu.com"));
            System.out.println(getEncodeQueryUrl("https://www.baidu.com/"));
    
        }
    
        public static String getEncodeQueryUrl(String url) throws UnsupportedEncodingException { 
    
            if (StringUtils.isBlank(url)) { 
                throw new IllegalArgumentException("url is blank");
            }
            int pos = url.lastIndexOf("?");
            if (pos > -1 && (pos < (url.length() - 1))) { 
                return url.substring(0, pos + 1) + URLEncoder.encode(url.substring(pos + 1), "UTF-8");
            }
    
            return url;
        }
    }

输出：

https://www.baidu.com?platform%3Djiaobuchong%26name%3Djack
    https://www.baidu.com?
    https://www.baidu.com
    https://www.baidu.com/

授权链接变成这样就 ok 了：

https://developers.e.qq.com/oauth/authorize?client_id=123456&redirect_uri=https://www.baidu.com?platform%3Djiaobuchong%26name%3Djack&state=&scope=ADS_MANAGEMENT

参考：  
[微信授权回调时,回调地址中原有参数丢失][Link 1]  
[微信开发–授权接口url多参数请求问题][url]  
[网址URL中特殊字符转义编码][URL]

[Link 1]: https://blog.csdn.net/lengtianya/article/details/76222631
[url]: https://blog.csdn.net/qq_16398399/article/details/80655183
[URL]: https://blog.csdn.net/pcyph/article/details/45010609