springboot 自定义过滤器

自动注入属性

@ConfigurationProperties("hospital.middleware")
@Data
public class HospitalProperties {
    
    
    public static final String PREFIX = "hospital.middleware";
    private String hosId;
    private String hosName;
    @NestedConfigurationProperty
    private Gateway gateway = new Gateway();

    public HospitalProperties() {
    
    
    }
    @Data
    public static class Gateway {
    
    
        private String[] urlPatterns = new String[]{
    
    "/gateway/*"};
        private String secret;
        public Gateway() {
    
    
        }
    }
}

@Configuration
@EnableConfigurationProperties({
    
    HospitalProperties.class})
public class HospitalAutoConfiguration {
    
    
    public HospitalAutoConfiguration() {
    
    
    }
}

once filter实现类

public class MiddlewareGatewayFilter extends OncePerRequestFilter {
    
    
    private final Encrypt encrypt;
    private final Logger logger = LoggerFactory.getLogger(MiddlewareGatewayFilter.class);
    private final ObjectMapper objectMapper;
    
	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
    
    
    ///......
    }

    public MiddlewareGatewayFilter(final Encrypt encrypt, final ObjectMapper objectMapper) {
    
    
        this.encrypt = encrypt;
        this.objectMapper = objectMapper;
    }
}

注册filter

@Configuration
public class GatewayAutoConfiguration {
    
    
    private final HospitalProperties hospitalProperties;

    @Bean
    public FilterRegistrationBean<MiddlewareGatewayFilter> middlewareGatewayFilterFilterRegistrationBean() {
    
    
        FilterRegistrationBean<MiddlewareGatewayFilter> bean = new FilterRegistrationBean();
        bean.setFilter(new MiddlewareGatewayFilter(new Encrypt(this.hospitalProperties.getGateway().getSecret()), new JsonMapper()));
        bean.setOrder(Integer.MAX_VALUE);
        bean.setUrlPatterns(Arrays.asList(this.hospitalProperties.getGateway().getUrlPatterns()));
        return bean;
    }

    public GatewayAutoConfiguration(final HospitalProperties hospitalProperties) {
    
    
        this.hospitalProperties = hospitalProperties;
    }
}

yaml

# 医院配置
hospital:
  middleware:
    # 医院ID编号
    hos-id: 123456
    # 医院名称
    hos-name: ${
    
    spring.application.name}
    gateway:
      urlPatterns:
        - /gateway/*
        - /doc.html
        - /v3/*