jsp request.getgetParameter 乱码了 疑惑中

我有一个url  :

http://localhost/7xwang/join/login.jsp?result=%E6%B5%8B%E8%AF%95


在jsp页面上
request.getParameter("result");


System.out.println( request.getParameter("result"));

后台出现：

???è??

结果乱码了  其实我想在后台打印出
（我想直接获得%E6%B5%8B%E8%AF%95）
%E6%B5%8B%E8%AF%95

---

后台添加：request.setCharacterEncoding("UTF-8");
jsp :  pageEncoding="UTF-8"

这样试试


或者加一个过滤器，这样就不用担心乱码问题了
1. public class ZHFilter extends Filter{

@Override
protected void doDestroy() {
// TODO Auto-generated method stub

}

@Override
protected void doFilter(HttpServletRequest request, HttpServletResponse response,
FilterChain chain) throws Throwable {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);

}

@Override
protected void doInit() throws Exception {
// TODO Auto-generated method stub

}

}
2.web.xml中添加
<!-- 乱码的过滤-->
  <filter>
    <filter-name>ZHFilter </filter-name&