spring - 在每个请求中设置 cookie - SPRING

Question

我现在正在开发简单的 Spring Boot Web 应用程序.. spring(过滤器)中是否有东西可以检查每个请求( header ).. 我想检查一下是否有cookie.. 如果有cookie-什么也没有发生.. 但如果没有，它会创建 cookie... 我是否必须手动执行此操作，所以我将其放入每个函数中？ 或者我可以做一些类似全局函数的事情，它会与其他每个请求一起执行吗？

感谢您的帮助。

Answer 1

是的，你必须使用过滤器 你可以尝试做这样的事情

public class MyCookieFilter extends GenericFilterBean {

    public static final String MY_COOKIE_NAME = "your-cookie-name";


    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
        throws IOException, ServletException {
        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
        HttpServletResponse httpServletResponse = (HttpServletResponse) servletResponse;

        checkCookie(httpServletRequest, httpServletResponse);

        filterChain.doFilter(servletRequest, servletResponse);
    }

    private void checkCookie(HttpServletRequest request, HttpServletResponse servletResponse) {
        boolean cookieExists = Arrays.stream(request.getCookies()).anyMatch(cookie -> cookie.getName().equalsIgnoreCase(MY_COOKIE_NAME));
        if (!cookieExists) {
            String cookieValue = "your-cookie-value";
            Cookie newCookie = new Cookie(MY_COOKIE_NAME, cookieValue);
            servletResponse.addCookie(newCookie);
        }
    }
}

然后将其添加到您的安全配置中

    @Override
    public void configure(HttpSecurity http) throws Exception {
    http
     ...
       .addFilter(new MyCookieFilter())
     ...
    }