示例问题代码：

@WebFilter(filterName = "authorizeFilter", urlPatterns = {"*.htm", "*.html"}, asyncSupported = true)
public class AuthorizeFilter implements Filter {

	@Autowired
	private OtherBean otherBean;

	@Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void destroy() {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain) throws IOException, ServletException {
        // true
		System.out.println(otherBean == null);
	}
}

现象：

本地运行测试均可通过，上测试环境后运行注入bean为空
现象：使用外置tomcat可触发，本地使用内置tomcat则无此问题

解决代码

@Component
public class AuthorizeFilter implements Filter {

	@Autowired
	private OtherBean otherBean;

	@Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void destroy() {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain) throws IOException, ServletException {
        // false
		System.out.println(otherBean == null);
	}
}
@Configuration
public class WebFilterConfig implements WebMvcConfigurer {

    @Autowired
    private AuthorizeFilter authorizeFilter;

    @Bean("authorizeFilterBean")
    public FilterRegistrationBean authorizeFilterBean() {
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(authorizeFilter);
        registration.addUrlPatterns(new String[]{"*.htm", "*.html"});
        registration.setName("authorizeFilter");
        registration.setAsyncSupported(true);
        return registration;
    }

}

启动类加上：@ServletComponentScan({“com.hybase.site.filter”})

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