springboot中@webfilter注解的filter时注入bean都是null

 

在使用@Webfilter注解Filter的情况下,不上外部tomcat时是没有问题的。但是在tomcat下运行时，filter中注入的bean就都是null

 

解决办法：

一：去掉@Webfilter注解

public class GeneralFilter implements Filter {

    
    @Autowired
    private SettingRemote settingRemote; //注入
    
    ....

}

 

 二： 新增一个配置类,用来手工创建filter的bean

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Bean
    public Filter generalFilter() {
        return new GeneralFilter();
    }

    @Bean
    public FilterRegistrationBean uploadFilterRegistration() {
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(new DelegatingFilterProxy("generalFilter"));
        registration.addUrlPatterns("/*");
        registration.setName("generalFilter");
        registration.setOrder(1);
        return registration;
    }
}

之后注入的业务bean就不会是null

 

转自:https://www.cnblogs.com/zsg88/p/10260305.html