@WebFilter(filterName = "AsynFilter", value = {"/index.jsp"},dispatcherTypes={DispatcherType.REQUEST,DispatcherType.ASYNC})

public class AsynFilter implements Filter {

@Override

public void destroy() {

// TODO Auto-generated method stub

}

@Override

public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)

throws IOException, ServletException {

System.out.println("start…………AsynFilter");

arg2.doFilter(arg0,arg1); // 放行

System.out.println("end…………AsynFilter");

}

@Override

public void init(FilterConfig arg0) throws ServletException {

// TODO Auto-generated method stub

System.out.println("init…………AsynFilter");

}

}

访问index.jsp之后，不会输出index.jsp中的内容，但是会在控制台输出：

end…………AsynFilter

start…………AsynFilter

这是为什么？好像过滤器没有放行一样，不会执行index中的内容