Error creating bean named "freeMarkerConfigurer"

I have a spring boot project package for war using maven package. Deploying to tomcat, which already has some web projection running, there is a wired issue. I am starting learning spring boot, can you please help me with this problem. thanks ~

    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'freeMarkerConfigurer' defined in class path resource [org/springframework/boot/autoconfigure/freemarker/FreeMarkerAutoConfiguration$FreeMarkerWebConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer]: Factory method 'freeMarkerConfigurer' threw exception; nested exception is java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.springframework.ui.freemarker.FreeMarkerConfigurationFactory.setResourceLoader(Lorg/springframework/core/io/ResourceLoader;)V" the class loader (instance of org/apache/catalina/loader/StandardClassLoader) of the current class, org/springframework/web/servlet/view/freemarker/FreeMarkerConfigurer, and the class loader (instance of org/apache/catalina/loader/WebappClassLoader) for interface org/springframework/context/ResourceLoaderAware have different Class objects for the type org/springframework/core/io/ResourceLoader used in the signature
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
    at org.springframework.boot.context.web.SpringBootServletInitializer.run(SpringBootServletInitializer.java:117)
    at org.springframework.boot.context.web.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:108)
    at org.springframework.boot.context.web.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:68)
    at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:175)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5274)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:977)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1655)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
    at java.util.concurrent.FutureTask.run(FutureTask.java:166)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:679)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer]: Factory method 'freeMarkerConfigurer' threw exception; nested exception is java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.springframework.ui.freemarker.FreeMarkerConfigurationFactory.setResourceLoader(Lorg/springframework/core/io/ResourceLoader;)V" the class loader (instance of org/apache/catalina/loader/StandardClassLoader) of the current class, org/springframework/web/servlet/view/freemarker/FreeMarkerConfigurer, and the class loader (instance of org/apache/catalina/loader/WebappClassLoader) for interface org/springframework/context/ResourceLoaderAware have different Class objects for the type org/springframework/core/io/ResourceLoader used in the signature
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
    ... 31 common frames omitted
Caused by: java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "org.springframework.ui.freemarker.FreeMarkerConfigurationFactory.setResourceLoader(Lorg/springframework/core/io/ResourceLoader;)V" the class loader (instance of org/apache/catalina/loader/StandardClassLoader) of the current class, org/springframework/web/servlet/view/freemarker/FreeMarkerConfigurer, and the class loader (instance of org/apache/catalina/loader/WebappClassLoader) for interface org/springframework/context/ResourceLoaderAware have different Class objects for the type org/springframework/core/io/ResourceLoader used in the signature
    at org.springframework.boot.autoconfigure.freemarker.FreeMarkerAutoConfiguration$FreeMarkerWebConfiguration.freeMarkerConfigurer(FreeMarkerAutoConfiguration.java:124)
    at org.springframework.boot.autoconfigure.freemarker.FreeMarkerAutoConfiguration$FreeMarkerWebConfiguration$$EnhancerBySpringCGLIB$$49f80c27.CGLIB$freeMarkerConfigurer$0(<generated>)
    at org.springframework.boot.autoconfigure.freemarker.FreeMarkerAutoConfiguration$FreeMarkerWebConfiguration$$EnhancerBySpringCGLIB$$49f80c27$$FastClassBySpringCGLIB$$1c5632a1.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
    at org.springframework.boot.autoconfigure.freemarker.FreeMarkerAutoConfiguration$FreeMarkerWebConfiguration$$EnhancerBySpringCGLIB$$49f80c27.freeMarkerConfigurer(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
    ... 32 common frames omitted

      

        
        
        
      

    

pom.xml

For Java 1.6 compatibility, I am excluding several dependencies.

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.3.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
            <exclusions>
                <exclusion>
                    <artifactId>javax.transaction-api</artifactId>
                    <groupId>javax.transaction</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.jboss.spec.javax.transaction</groupId>
            <artifactId>jboss-transaction-api_1.1_spec</artifactId>
            <version>1.0.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>18.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>nekohtml</groupId>
            <artifactId>nekohtml</artifactId>
            <version>1.9.6.2</version>
        </dependency>
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>webjars-locator</artifactId>
            <version>0.1</version>
            <exclusions>
                <exclusion>
                    <artifactId>javassist</artifactId>
                    <groupId>javassist</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity3</artifactId>
        </dependency>
    </dependencies>
    <properties>
        <java.version>1.6</java.version>
        <tomcat.version>7.0.63</tomcat.version>
    </properties>