reqeuest乱码解决(自记)

1.如果request.getParameter("userName")==???;就用new String(request.getParameter("userName").getBytes("ISO8859-1"), "UTF-8")解决

2.如果request.getParameter("userName")==%E5%BC%A0%E6%98%A5%E5%B9%B3;就用java.net.URLDecoder.decode(request.getParameter("userName"),"utf-8")解决