在Eclipse中成功运行我的Spring Boot应用程序（示例程序将jason发布到Spring RESTful webservice）。但是，当我使用mvn package命令获取jar文件时。得到以下消息。任何人都可以提供帮助。
: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'controllerSimple' defined in file
ControllerSimple.java
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<AnEntity> 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();
...
...
}
mvn包得到以下消息：
:: 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]
的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</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
剩下的错误，show无法找到主类。
:[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] -> [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
答案 0 :(得分：0)
这是您的主要错误：
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
您应该添加更多 Apache POI 依赖项：
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.14</version>
</dependency>