java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape

java编码解码

前两天修改了个功能，登陆的时候密码为‘%qwertyu’，在解码的时候出现了这个异常java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "qw"


本地测试

import java.net.URLDecoder;
import java.net.URLEncoder;
String domain = "中国.中国";
String password = "%qwertyu";
			
			
			try {					domain = URLEncoder.encode(domain, "gbk");
	password = URLEncoder.encode(password,"gbk");
	System.out.println("domain: " + domain);
	System.out.println("password:" + password);
	domain = URLDecoder.decode(domain, "gbk");
	password = URLDecoder.decode(password, "gbk");
	System.out.println("domain: " + domain);
	System.out.println("password:" + password);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			

输出结果：

domain: %D6%D0%B9%FA.%D6%D0%B9%FA
password:%25qwertyu
domain: 中国.中国
password:%qwertyu

但是写到线上，在action中编码，到jsp中解码，还是报上边的异常，后来请教了一下同事，同事说jsp中它自动解码了，所以再调用解码函数的时候就出现了异常信息，所以在线上的jsp中就不用解码了。