%特殊字符转码解码异常解决方案

JS加码encodeURI(str)

JS解码decodeURI(str)

JAVA解码URLDecoder.decode(str, "UTF-8");

摘要：Exception in thread main java.lang.IllegalArgumentException:URLDecoder: Illegal hex characters in escape (%) pattern - For input string: u9at java.net.URLDecoder.decode(URLDecoder.java:194) atcom.hbzx.controller.PayResultController.main(] Exceptionin thread "main" java.lang.IllegalArgumentException: URLDecoder:Illegal hex characters in escape (%) pattern - For input string: "u9"        atjava.net.URLDecoder.decode(URLDecoder.java:194)        atcom.hbzx.controller.PayResultController.main(PayResultController.java:253)

 

Java调用 URLDecoder.decode(str,"UTF-8"); 抛出以上的异常，其主要原因是% 在URL中是特殊字符，需要特殊转义一下，

解决办法：使用%25替换字符串中的%号

 url =url.replaceAll("%(?![0-9a-fA-F]{2})", "%25");   

String urlStr = URLDecoder.decode(url,"UTF-8");