NoSuchBeanDefinitionException：没有可用的“javax.servlet.Filter”类型的合格 bean
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【中文标题】NoSuchBeanDefinitionException：没有可用的“javax.servlet.Filter”类型的合格 bean【英文标题】：NoSuchBeanDefinitionException: No qualifying bean of type 'javax.servlet.Filter' available 【发布时间】：2017-04-05 10:21:59 【问题描述】：Eureka 服务器 - Camden.SR2 - Spring Boot Starter 1.4.2.RELEASE
尝试使用 Eureka 服务器运行 Spring Boot Starter 1.4.2.RELEASE 时出现以下错误：
2016-11-21 22:33:53.420 INFO 20635 --- [ main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@2177849e: startup date [Mon Nov 21 22:33:53 CET 2016]; root of context hierarchy
2016-11-21 22:33:53.836 INFO 20635 --- [ main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2016-11-21 22:33:53.894 INFO 20635 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'configurationPropertiesRebinderAutoConfiguration' of type [class org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$fc4b31a3] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
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( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
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:: Spring Boot :: (v1.4.2.RELEASE)
2016-11-21 22:33:59.402 INFO 20635 --- [ main] i.v.p.s.EurekaServerApplication : No active profile set, falling back to default profiles: default
2016-11-21 22:33:59.422 INFO 20635 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@5c18016b: startup date [Mon Nov 21 22:33:59 CET 2016]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@2177849e
2016-11-21 22:34:00.348 WARN 20635 --- [ main] o.s.c.a.ConfigurationClassPostProcessor : Cannot enhance @Configuration bean definition 'refreshScope' since its singleton instance has been created too early. The typical cause is a non-static @Bean method with a BeanDefinitionRegistryPostProcessor return type: Consider declaring such methods as 'static'.
2016-11-21 22:34:00.655 INFO 20635 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=e1bdaab3-6fb3-3c45-9078-5ee488116098
2016-11-21 22:34:00.772 INFO 20635 --- [ main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2016-11-21 22:34:00.936 INFO 20635 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [class org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$fc4b31a3] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2016-11-21 22:34:01.378 INFO 20635 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8761 (http)
2016-11-21 22:34:01.397 INFO 20635 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2016-11-21 22:34:01.399 INFO 20635 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.6
2016-11-21 22:34:01.589 INFO 20635 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2016-11-21 22:34:01.590 INFO 20635 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2168 ms
2016-11-21 22:34:02.107 ERROR 20635 --- [ost-startStop-1] o.s.b.c.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.UnsatisfiedDependencyException. Message: Error creating bean with name 'traceFilterRegistration' defined in org.springframework.cloud.netflix.eureka.server.EurekaServerConfiguration: Unsatisfied dependency expressed through method 'traceFilterRegistration' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'javax.servlet.Filter' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: @org.springframework.beans.factory.annotation.Qualifier(value=webRequestLoggingFilter)
2016-11-21 22:34:02.141 WARN 20635 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
2016-11-21 22:34:02.315 ERROR 20635 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method traceFilterRegistration in org.springframework.cloud.netflix.eureka.server.EurekaServerConfiguration required a bean of type 'javax.servlet.Filter' that could not be found.
- Bean method 'resourceUrlEncodingFilter' in 'FreeMarkerAutoConfiguration.FreeMarkerWebConfiguration' not loaded because @ConditionalOnEnabledResourceChain did not find class org.webjars.WebJarAssetLocator
Action:
Consider revisiting the conditions above or defining a bean of type 'javax.servlet.Filter' in your configuration.
pom.xml：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example.spring.microservices</groupId>
<artifactId>EurekaServer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>EurekaServer</name>
<description>Eureka discovery server example</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.yml：
server:
port: 8761
spring:
application:
name: eureka-server1
eureka:
client:
registerWithEureka: false
fetch-registry: false
serviceUrl:
defaultZone: http://localhost:8761/eureka/
启动应用程序类：
@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication
public static void main(String[] args)
SpringApplication.run(EurekaServerApplication.class, args);
注意：如果我将 spring-boot-starter-parent 设置为 1.4.1.RELEASE 一切正常。
这是我的环境：
MacOS Sierra 10.12.1 Spring Tool Suite - 版本：3.8.2.RELEASE（内部版本 ID：201610040743 - 平台：Eclipse Neon.1 (4.6.1)）【问题讨论】：
【参考方案1】：在 GitHub 上打开了一个问题：#1491。
通过清理maven repo解决：rm -r $HOME/.m2
【讨论】：
这可能是有害的，很多人在 .m2 目录中有复杂的 settings.xml 文件（比如我）和其他东西（通过 *** 下载的自定义依赖项）。完美的解决方案是删除特定的罐子。但是哪一个？【参考方案2】：你可以创建这个 bean：
@Bean
public Filter webRequestLoggingFilter()
return new CommonsRequestLoggingFilter();
【讨论】：
【参考方案3】：我能够通过调整我的 spring-boot 和 spring-cloud 版本来解决这个问题，特别是 spring-boot-starter-parent 和 spring-cloud-dependencies.
为了查看这些的最新兼容版本，我使用SpringInitializr 创建了一个 eureka 服务器项目，然后查看了生成的 pom.xml。
从上面的链接创建一个 eureka 项目：
选择spring boot版本（我用的是最新的） 在依赖项中输入“eureka”并选择 eureka-server点击“Explore”按钮查看生成的 pom.xml。
【讨论】：
【参考方案4】：spring boot 和 spring cloud 应该有不匹配的版本。如果您使用 spring boot 版本 2.2.0.RELEASE，则必须使用 spring cloud 版本 Hoxton.RC1。如果使用spring boot 2.1.9.RELEASE版本，则必须使用spring cloud 版本Greenwich.SR3。
下面是示例：
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR3</spring-cloud.version>
</properties>
【讨论】：
【参考方案5】：我改变了
【讨论】：
【参考方案6】：您可以通过匹配 Spring Boot 和 Spring Cloud 的版本来解决许多此类问题（Spring Boot + Spring Cloud）。请参阅此链接以获取版本矩阵。 https://spring.io/projects/spring-cloud
【讨论】：
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