springboot整合过滤器代码

可以参考以下代码实现：

1.定义自定义过滤器

@Component
public class MyFilter implements Filter {
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        String token = req.getHeader("token");
        if (StringUtils.isEmpty(token)) {
            ((HttpServletResponse) response).sendError(HttpServletResponse.SC_UNAUTHORIZED, "未授权的访问");
            return;
        }
        chain.doFilter(request, response);
    }
}

2.在启动类中注册该过滤器

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Bean
    public FilterRegistrationBean<MyFilter> filterRegistrationBean() {
        FilterRegistrationBean<MyFilter> registrationBean = new FilterRegistrationBean<>();
        registrationBean.setFilter(new MyFilter());
        registrationBean.addUrlPatterns("/*");
        registrationBean.setOrder(1);
        return registrationBean;
    }
}

3.配置文件中添加对应的配置

...
# 配置端口号
server:
  port: 8080
...

以上是一个简单的Spring Boot整合过滤器的实现方式。