Java 无法在web.xml:com.xxx.CORSFilter中加载用户定义的筛选器

我有一个SpringBoot应用程序在WebLogic服务器版本12.2.1.3.0上运行 当我定义自定义servlet过滤器时，它在嵌入式Tomcat上运行良好。然而，当我将应用程序作为war文件部署到wlserver时，它会在每个请求后抛出以下错误。我错过了什么

    <Could not load user defined filter in web.xml: com.thy.bwsadmin.CORSFilter.
java.lang.AbstractMethodError
    at weblogic.servlet.internal.FilterManager$FilterInitAction.run(FilterManager.java:400)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:328)
    at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:197)
    at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203)
    at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71)
    at weblogic.servlet.internal.FilterManager.initFilter(FilterManager.java:130)
    at weblogic.servlet.internal.FilterManager.loadFilter(FilterManager.java:92)
    at weblogic.servlet.internal.FilterManager.preloadFilters(FilterManager.java:72)
    at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1928)
    at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3106)
    at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1843)
    at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:884)
    at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:360)
    at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:356)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
    at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:138)
    at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:233)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:228)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
    at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:78)
    at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:52)
    at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:752)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
    at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:262)

作为解决方案，我尝试删除web.xml文件中的过滤器定义，并将过滤器注册为bean配置，因为这是一个SpringBoot应用程序。我还从过滤器中删除了@Component和@Order注释。 但结果与上述相同。它仍在Tomcat上工作，但在Weblogic中没有。下面是过滤器配置bean的代码

@Configuration
public class Filters {

    @Bean
    public FilterRegistrationBean<CORSFilter> loggingFilter() {
        FilterRegistrationBean<CORSFilter> registrationBean = new FilterRegistrationBean<>();
        registrationBean.setFilter(new CORSFilter());
        registrationBean.addUrlPatterns("/*");
        return registrationBean;
    }
}

@配置
公共类过滤器{
@豆子
公共过滤器注册Bean loggingFilter（）{
FilterRegistrationBean registrationBean=新的FilterRegistrationBean（）；
setFilter（新的CORSFilter（））；
registrationBean.addUrlPatterns（“/*”）；
返回注册bean；
}
}

weblogic提供的servlet api可能是旧版本，您的筛选器类需要重写init方法

在过滤器类中添加以下代码

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

---

在新版本的servlet api中，filter类具有默认的空init方法。

如何创建war文件？。。。你能分享springboot应用程序类吗？向我的过滤类添加init方法修复了这个问题。谢谢！

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import com.thy.bwsadmin.service.SecurityUserService;

    @Component
    @Order(Ordered.HIGHEST_PRECEDENCE)
    public class CORSFilter implements Filter {



        @Autowired
        SecurityUserService securityUserService;

        @Override
        public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
                throws IOException, ServletException {

            HttpServletResponse response = (HttpServletResponse) res;
            HttpServletRequest request = (HttpServletRequest) req;

            boolean isAuthenticated = authenticateUser(request.getHeader("identity_no"), request.getRequestURI());


            if (isAuthenticated) {
                if ("OPTIONS".equalsIgnoreCase(request.getMethod())) {
                    response.setStatus(HttpServletResponse.SC_OK);
                } else {
                    chain.doFilter(req, res);
                }
            } else {
                response.sendError(HttpServletResponse.SC_OK, "401");
            }

        }

        private boolean authenticateUser(String userId, String requestURI) {
            if (Util.isNotEmpty(userId) 
            &&  securityUserService.isAuthorizedForEndpoint(userId.trim(), requestURI)) {
                return true;
            }else{
                return false;
            }

        }

    }

@Configuration
public class Filters {

    @Bean
    public FilterRegistrationBean<CORSFilter> loggingFilter() {
        FilterRegistrationBean<CORSFilter> registrationBean = new FilterRegistrationBean<>();
        registrationBean.setFilter(new CORSFilter());
        registrationBean.addUrlPatterns("/*");
        return registrationBean;
    }
}

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