创建过滤器及代码

@WebFilter(filterName = "DomeFilter",urlPatterns = "/*")
public class DomeFilter implements Filter {
    public void destroy() {
        System.out.println("过滤器被销毁");
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        chain.doFilter(req, resp);
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;
        response.addHeader("Access-Control-Allow-Origin","*");
        resp.setContentType("text/html;charset=utf-8");


        System.out.println("过滤器被执行");

    }

    public void init(FilterConfig config) throws ServletException {
        System.out.println("过滤器被创建");

    }

}