Question

我在Web Filter中发现，无法初始化自动装配的bean，如下面的代码

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;

public class ClientIpFilter implements Filter {

    @Autowired
    private Environment environment;
}

在配置中注册Bean

import org.springframework.boot.context.embedded.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;


@Configuration
public class CustomWebSecurityConfigurerAdapter {
     @Bean
        public FilterRegistrationBean filterRegistrationBean() {
            FilterRegistrationBean registrationBean = new FilterRegistrationBean();
            ClientIpFilter securityFilter = new ClientIpFilter();
            registrationBean.setFilter(securityFilter);
            registrationBean.setOrder(1);
            return registrationBean;
        }           
}

这是因为Filter在其他bean之前被引用了吗？如果是，我怎样才能在网络过滤器中使用spring bean？

Answer 1

您错过了ClientIpFilter类的@Component注释。

Web Filter无法自动装配spring bean

1 个答案: