如何解决在过滤器中重定向时停止进一步处理
只需return
在末尾添加一条语句即可if
if (sn.startsWith("www.")) {
String url = "http://" + getDefaultDomain() + req.getContextPath() + req.getRequestURI();
HttpServletResponse resp = (HttpServletResponse) response;
resp.reset();
resp.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
resp.setHeader("Location", url);
return;
}
chain.doFilter(request, response);
或添加一个 else
if (sn.startsWith("www.")) {
String url = "http://" + getDefaultDomain() + req.getContextPath() + req.getRequestURI();
HttpServletResponse resp = (HttpServletResponse) response;
resp.reset();
resp.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
resp.setHeader("Location", url);
} else {
chain.doFilter(request, response);
}
解决方法
我有URLRewirteFilter,它检查请求的域是否以www开头。并重定向到无www网址。当要重定向请求时,如何停止进一步的处理(调用JSF应用程序,调用servlet等)?到目前为止,我有这个:
public void doFilter(ServletRequest request,ServletResponse response,FilterChain chain) throws IOException,ServletException {
HttpServletRequest req = (HttpServletRequest) request;
String sn = req.getServerName().toLowerCase();
if (sn.startsWith("www.")) {
String url = "http://" + getDefaultDomain() + req.getContextPath() + req.getRequestURI();
HttpServletResponse resp = (HttpServletResponse) response;
resp.reset();
resp.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
resp.setHeader("Location",url);
}
chain.doFilter(request,response);
}
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