@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");
}
}