jsp使用过滤器后，产生JavaScript中文乱码

Question

过滤器里是这么写的：
PrintWriter out = response.getWriter();
HttpSession session = ((HttpServletRequest)request).getSession();if ( (String)session.getAttribute("cellphoneName")==null ){
out.print(" <script language='javascript' charset='gb2312'>window.alert('您尚未选择手机');history.go(-1); </script>");
}

chain.doFilter(request, response);
==============================================
web.xml里面是这么也得
<filter>
    <filter-name>cellphoneNameExist</filter-name>
    <filter-class>filter.CellphoneNameExist</filter-class>
</filter>
<filter-mapping>
    <filter-name>cellphoneNameExist</filter-name>
    <url-pattern>/cellphoneBuy.jsp</url-pattern>
</filter-mapping>
===============================================
页面访问经过过滤器后，弹出警告时:你尚未选择手机 是乱码。页面上我也用了
request.setCharacterEncoding("gb2312");
response.setCharacterEncoding("gb2312");小弟课程项目要交了，实在不知道怎么解决
求哪位高人帮忙。。小弟感激不尽

Answer 1

将window.alert('您尚未选择手机')
换成unicode编码
window.alert('\u60a8\u5c1a\u672a\u9009\u62e9\u624b\u673a')

Answer 2

你加上这个response.setContentType("text/json; charset=gb2312）"); 试试！

Answer 3

浏览器自动选择编码
在别的机子上test下

Answer 4

可能是你的项目与发布项目的容器之间字符集不同引起的，如果是在Tomcat中可以在Apache Tomcat 6.0.18\conf下的server.xml中该成下面的代码试试
                <Connector port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" URIEncoding="GBK"/>

Answer 5

out.println("<script type='text/javascript'>");
out.print("alert(decodeURIComponent(\"" + java.net.URLEncoder.encode("您尚未选择手机", "UTF-8").replace("+","%20") + "\"));");
out.println("history.go(-1);");
out.println("</script>");
或者out.println("<script type='text/javascript'>");
out.println("alert('\\u60a8\\u5c1a\\u672a\\u9009\\u62e9\\u624b\\u673a');");
out.println("history.go(-1);");
out.println("</script>")