Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException
<p>Run my Spring Boot application (sample program to post jason to Spring RESTful webservice) in Eclipse successfully. However, when I use the <code>mvn package</code> command to get jar file. Got the following message. Anyone could help.</p>

<pre><code>: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'controllerSimple' defined in file
</code></pre>

<p>ControllerSimple.java</p>

<pre><code>package com.example;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class ControllerSimple {

    AddressList addressList;
    ControllerSimple (){
        addressList = new AddressList();
    }



@RequestMapping("/hello")
public String index() {
    return "Hello World";
}  

@RequestMapping(value="/crud_c_final", method=RequestMethod.POST)
public ResponseEntity&lt;AnEntity&gt; create_key(@RequestBody AnEntity anentity) throws SMException, IOException{

    System.out.println("request create received!");
    if(anentity!=null){          
        String key = anentity.getKey();
        String name = anentity.getValue().getName();
        String address = anentity.getValue().getAddress();

...
...
}
</code></pre>

<p>mvn package got following message:</p>

<pre><code>   :: Spring Boot ::        (v1.3.3.RELEASE)


2016-04-12 00:41:16.113  INFO 16920 --- [           main] com.example.DemoApplicationTests         : Starting DemoApplicationTests on WINDOWS-80KONH6 with PID 16920 (C:\Users\MyPC\workspace\springb\target\test-classes started by MyPC in C:\Users\MyPC\workspace\springb)

2016-04-12 00:41:16.114  INFO 16920 --- [           main] com.example.DemoApplicationTests         : No active profile set, falling back to default profiles: default

2016-04-12 00:41:16.231  INFO 16920 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1197a46: startup date [Tue Apr 12 00:41:16 PDT 2016]; root of context hierarchy
2016-04-12 00:41:18.951  WARN 16920 --- [           main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'controllerSimple' defined in file [C:\Users\MyPC\workspace\springb\target\classes\com\example\ControllerSimple.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.ControllerSimple]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/poi/util/HexDump

2016-04-12 00:41:18.968 ERROR 16920 --- [           main] o.s.boot.SpringApplication               : Application startup failed



org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'controllerSimple' defined in file [C:\Users\MyPC\workspace\springb\target\classes\com\example\ControllerSimple.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.example.ControllerSimple]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/poi/util/HexDump

at       rg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at       org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

 at     org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) ~[spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]

at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) ~[spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) ~[spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]

at org.springframework.boot.test.SpringApplicationContextLoader.loadContext(SpringApplicationContextLoader.java:98) [spring-boot-1.3.3.RELEASE.jar:1.3.3.RELEASE]

at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) [spring-test-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) [spring-test-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83) [spring-test-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117) [spring-test-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83) [spring-test-4.2.5.RELEASE.jar:4.2.5.RELEASE]

at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228) [spring-test-4.2.5.RELEASE.jar:4.2.5.RELEASE]
</code></pre>

<p>pom.xml</p>

<pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;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"&gt;
&lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;

&lt;groupId&gt;com.example&lt;/groupId&gt;
&lt;artifactId&gt;demo&lt;/artifactId&gt;
&lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt;
&lt;packaging&gt;jar&lt;/packaging&gt;

&lt;name&gt;demo&lt;/name&gt;
&lt;description&gt;Demo project for Spring Boot&lt;/description&gt;

&lt;parent&gt;
    &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
    &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
    &lt;version&gt;1.3.3.RELEASE&lt;/version&gt;
    &lt;relativePath/&gt; &lt;!-- lookup parent from repository --&gt;
&lt;/parent&gt;

&lt;properties&gt;
    &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
    &lt;java.version&gt;1.8&lt;/java.version&gt;
&lt;/properties&gt;

&lt;dependencies&gt;
    &lt;dependency&gt;
        &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
        &lt;artifactId&gt;spring-boot-starter&lt;/artifactId&gt;
    &lt;/dependency&gt;

    &lt;dependency&gt;
    &lt;groupId&gt;org.apache.tomcat.embed&lt;/groupId&gt;
    &lt;artifactId&gt;tomcat-embed-jasper&lt;/artifactId&gt;
    &lt;scope&gt;provided&lt;/scope&gt;
    &lt;/dependency&gt;

    &lt;dependency&gt;
    &lt;groupId&gt;javax.servlet&lt;/groupId&gt;
    &lt;artifactId&gt;jstl&lt;/artifactId&gt;
     &lt;/dependency&gt;

    &lt;dependency&gt;
        &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
        &lt;artifactId&gt;spring-boot-starter-test&lt;/artifactId&gt;
        &lt;scope&gt;test&lt;/scope&gt;
    &lt;/dependency&gt;

    &lt;dependency&gt;
    &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
    &lt;artifactId&gt;spring-boot-starter-web&lt;/artifactId&gt;
    &lt;/dependency&gt;
&lt;/dependencies&gt;

&lt;build&gt;
    &lt;plugins&gt;
        &lt;plugin&gt;
            &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
            &lt;artifactId&gt;spring-boot-maven-plugin&lt;/artifactId&gt;
        &lt;/plugin&gt;
    &lt;/plugins&gt;
&lt;/build&gt;
</code></pre>

<p></p>

<p>remaining error, show can not find the main class.</p>

<pre><code>:[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin
:1.3.3.RELEASE:repackage (default) on project demo: Execution default of goal or
g.springframework.boot:spring-boot-maven-plugin:1.3.3.RELEASE:repackage failed:
Unable to find a single main class from the following candidates [com.example.De
moApplication, com.example.FileStorage, com.example.RandomGUID] -&gt; [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutio
nException
</code></pre>