对于get乱码
String userName = new String(request.getParamter("userName").getBytes("ISO8859-1"),"utf-8")
或者
<Connector URIEncoding="utf-8" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>
原文：http://www.cnblogs.com/52hadoop/p/5638374.html