我想创建简单的Spring MVC项目。
我得到了：
上下文初始化失败 org.springframework.beans.factory.BeanCreationException：创建名为"org.springframework.validation.beanvalidation.LocalValidatorFactoryBean#0"的 bean 时出错：初始化方法的调用失败;嵌套异常是java.lang.LinkageError：加载器约束违规：当解析方法"org.slf4j.impl.StaticLoggerBinder.getLoggerFactory((Lorg/slf4j/ILoggerFactory;"时，当前类的类加载器(org/apache/catalina/loader/loader/WebappClassLoader的实例(org/slf4j/LoggerFactory，以及解析类org/slf4j/StaticLoggerBinder的类加载器(org/apache/catalina/loader/StandardClassLoader的实例(，具有不同的类对象类型。记录器工厂
以下是pom.xml片段：
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>3.2.0.RELEASE</spring.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.2.0.Final</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.4.1</version>
</dependency>
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
servlet-config.xml:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<mvc:annotation-driven/>
<!--<mvc:resources location="assets" mapping="/assets/**"/>-->
<mvc:resources location="pdfs" mapping="/pdfs/**"/>
<context:component-scan base-package="lelyak.demo"/>
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="order" value="1"/>
<property name="contentNegotiationManager">
<bean class="org.springframework.web.accept.ContentNegotiationManager">
<constructor-arg>
<bean class="org.springframework.web.accept.PathExtensionContentNegotiationStrategy">
<constructor-arg>
<map>
<entry key="json" value="application/json"/>
<entry key="xml" value="application/xml"/>
</map>
</constructor-arg>
</bean>
</constructor-arg>
</bean>
</property>
<property name="defaultViews">
<list>
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView"/>
<bean class="org.springframework.web.servlet.view.xml.MarshallingView">
<constructor-arg>
<bean class="org.springframework.oxm.xstream.XStreamMarshaller">
<property name="autodetectAnnotations" value="true"/>
</bean>
</constructor-arg>
</bean>
</list>
</property>
</bean>
<mvc:interceptors>
<bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" p:paramName="language"/>
</mvc:interceptors>
<bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver" p:defaultLocale="en"/>
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource"
p:basename="messages"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" p:order="2"/>
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0"/>
</beans>
我不知道为什么会这样。以及如何解决这个麻烦。
更新：
mvn -Dverbose dependency:tree后的输出：
[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ ProjectFromConsoleDemo ---
[INFO] lelyak.demo:ProjectFromConsoleDemo:war:1.0
[INFO] +- org.springframework:spring-webmvc:jar:3.2.0.RELEASE:compile
[INFO] | +- org.springframework:spring-context:jar:3.2.0.RELEASE:compile
[INFO] | | +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | | +- org.springframework:spring-aop:jar:3.2.0.RELEASE:compile
[INFO] | | | +- (aopalliance:aopalliance:jar:1.0:compile - omitted for duplicate)
[INFO] | | | +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | | | - (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | | +- (org.springframework:spring-expression:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | | - (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | +- org.springframework:spring-core:jar:3.2.0.RELEASE:compile
[INFO] | | - commons-logging:commons-logging:jar:1.1.1:compile
[INFO] | +- org.springframework:spring-web:jar:3.2.0.RELEASE:compile
[INFO] | | +- (org.springframework:spring-context:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | | +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | | +- (org.springframework:spring-aop:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | | +- aopalliance:aopalliance:jar:1.0:compile
[INFO] | | - (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | +- org.springframework:spring-expression:jar:3.2.0.RELEASE:compile
[INFO] | | - (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] | - org.springframework:spring-beans:jar:3.2.0.RELEASE:compile
[INFO] | - (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- javax.servlet:jstl:jar:1.2:provided
[INFO] +- javax.servlet:servlet-api:jar:2.5:provided
[INFO] +- org.slf4j:slf4j-api:jar:1.7.7:compile
[INFO] +- org.slf4j:slf4j-log4j12:jar:1.7.7:compile
[INFO] | +- (org.slf4j:slf4j-api:jar:1.7.7:compile - omitted for duplicate)
[INFO] | - (log4j:log4j:jar:1.2.17:compile - omitted for duplicate)
[INFO] +- log4j:log4j:jar:1.2.17:compile
[INFO] +- org.hibernate:hibernate-validator:jar:4.2.0.Final:compile
[INFO] | +- javax.validation:validation-api:jar:1.0.0.GA:compile
[INFO] | - (org.slf4j:slf4j-api:jar:1.6.1:compile - omitted for conflict with 1.7.7)
[INFO] +- org.codehaus.jackson:jackson-mapper-asl:jar:1.4.1:compile
[INFO] | - org.codehaus.jackson:jackson-core-asl:jar:1.4.1:compile
[INFO] +- com.thoughtworks.xstream:xstream:jar:1.3.1:compile
[INFO] | - xpp3:xpp3_min:jar:1.1.4c:compile
[INFO] - org.springframework:spring-oxm:jar:3.2.0.RELEASE:compile
[INFO] +- (org.springframework:spring-core:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] +- commons-lang:commons-lang:jar:2.5:compile
[INFO] - (org.springframework:spring-beans:jar:3.2.0.RELEASE:compile - omitted for duplicate)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
有什么建议吗？
解决方案已清理 - Tomcat 的webapps文件夹。
我删除了已部署的旧项目。现在它工作正常。
它对我的应用程序有一些奇怪的影响。