<filter><filter-name>CharacterEncodingFilter</filter-name><filter-class>org.sPRingframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>utf-8</param-value></init-param></filter><filter-mapping><filter-name>CharacterEncodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping> 以上可以解決post請求亂碼問題。Get請求中文參數出現亂碼 修改tomcat配置文件添加編碼與工程編碼一致，如下： 
<Connector URIEncoding="utf-8" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/> 另外一種方法對參數進行重新編碼：
String userName newString(request.getParamter("userName").getBytes("ISO8859-1"),"utf-8")ISO8859-1是tomcat默認編碼，需要將tomcat編碼后的內容按utf-8編碼