问题~the method setCharacterEncoding(string) is undefined for the type HttpServletResponse

[guo046]

package com.shop.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharFilter implements Filter{

public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub

}

public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
HttpServletRequest hr=(HttpServletRequest)arg0;
HttpServletResponse hrs=(HttpServletResponse)arg1;
hr.setCharacterEncoding("gb2312");
hrs.setCharacterEncoding("gb2312");

arg2.doFilter(arg0,arg1);

}

public void destroy() {
// TODO Auto-generated method stub

}

}

[killercwf1]

我也出现这样的问题了，不知道怎么回事啊

[wzju64676266]

HttpServletResponse 类没有setCharacterEncoding(); 方法，你可以改成

response.setContentType("text/html;charset=gb2312");

[wondrain]

httpservletResponse有这个方法response.setCharacterEncoding("");

[howsun_zh]

楼主用的是什么web容器？
Tomcat5以后才支持这个方法。
换下高版本的J2EE基础包看看，
html页面用的字符编码最好与这个方法设定的一致(事实上这个方法用处不大)