SpringBoot项目中filter的两种使用详解

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.3</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.10</version>
        </dependency>
    </dependencies>

@WebFilter(filterName = "myFilter",urlPatterns = "/*")
@Slf4j
@Order(value = 2) //存在多个filter时 指定filter执行顺序
public class MyFilter02 implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        log.info("=======过滤器初始化2=======");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
        log.info("过滤器2：请求的sessionID为{},请求的url为{}",httpServletRequest.getSession().getId(),httpServletRequest.getRequestURL());
        filterChain.doFilter(servletRequest,servletResponse);
    }

    @Override
    public void destroy() {

    }
}

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

@Slf4j
public class MyFilter01 implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        log.info("=====初始化过滤器1======");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
        log.info("过滤器1：请求路径：{}",httpServletRequest.getRequestURL());
        filterChain.doFilter(servletRequest,servletResponse);
    }

    @Override
    public void destroy() {

    }
}

@Configuration
public class AddFilters {

    @Bean
    public FilterRegistrationBean addFilter(){
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
        filterRegistrationBean.setFilter(new MyFilter01());
        filterRegistrationBean.setOrder(1);
        filterRegistrationBean.addUrlPatterns("/*");
        return filterRegistrationBean;
    }
}

@RestController
@RequestMapping("/user")
public class UserController {

    @GetMapping("/getUserInfo")
    public String getUserInfo(){
        return "获取成功";
    }
}