解决与OA做单点CAS认证的时候乱码问题的心得
一般情况下，我们在做BS系统的时候，都有自己的一套过滤器，来处理所有访问的连接，例如
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
throws IOException, ServletException
{
HttpServletRequest httpreq = (HttpServletRequest) arg0;
String forwardURL = httpreq.getRequestURI().substring(httpreq.getContextPath().length()) ;
//System.out.println("url: "+forwardURL) ;
HttpSession session = httpreq.getSession(false);
if (IsAccess(forwardURL))
{
if (session == null || session.getAttribute("AMSSession") == null)
{
HttpServletResponse httprep = (HttpServletResponse) arg1;
System.out.println("没有登陆: "+forwardURL) ;
System.out.println("没有: "+httpreq.getContextPath()) ;
String Host = httpreq.getServerName();
int port = httpreq.getServerPort();
String App = httpreq.getContextPath();
if (App==null||App.trim().equals("")||App.trim().length()==1){
App = "/";
}else{
String strlast = new String(App.substring(App.length()-1));
if (!strlast.equals("/")) App = App + "/";
}
String loginUrl = "http://"+ Host + ":" + port + App + "login.jsp";
// String loginUrl = AmsGlobals.getAmsProperty("loginURL") ;
PrintWriter out = httprep.getWriter();
out.println("<html>");
out.println("<script>");
out.println("window.top.location = '"+loginUrl+"';");
out.println("</script>");
out.println("</html>");
return ;
}
else
{
arg0.setCharacterEncoding("GBK");
arg2.doFilter(arg0, arg1);
}
}
else
{
arg0.setCharacterEncoding("GBK");
arg2.doFilter(arg0, arg1);
}
}
在这里会将所有连接通过 setCharacterEncoding 处理成GBK,不过当我们做单点的时候，可能会用到OA的一套标准，会将
OA的过滤信息添加到我们系统的WEB.XML里，如果这样，处理不好可能会导致乱码，需要在添加的时候，将不需要的过滤条件删除掉。
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