jsp中多加一条
<%@ page contentType="text/html;charset=iso8859_1" language="java" %>
或者
<%@ page contentType="text/html;charset=gbk" language="java" %>
<%@ page contentType="text/html;charset=iso8859_1" language="java" %>
或者
<%@ page contentType="text/html;charset=gbk" language="java" %>
<%@ page contentType="text/html;charset=gbk" language="java" %>
就可以了,你试试