Question

我正在创建一个基于Spring的Web应用程序，我需要创建与DynamoDB的连接。每次我尝试，它都会使上下文初始化失败：java.lang.NoClassDefFoundError: com/amazonaws/services/dynamodbv2/AmazonDynamoDB。

这里没有我使用AmazonDynamoDB的地方。我还删除了静态，以便在初始化之前不会执行。

我的代码是：

@Repository
public class AbstractImplDAO <E> implements IAbstractDAO<E> {
  AmazonDynamoDBClient dbClient = new AmazonDynamoDBClient(new ProfileCredentialsProvider("UserName").getCredentials()).withRegion(Regions.US_WEST_2);
  DynamoDBMapper mapper = new DynamoDBMapper(dbClient, new DynamoDBMapperConfig(SaveBehavior.CLOBBER));
  @Override
  public IInfo getData(E entity) {
    return null;
  }
  @Override
  public IInfo add(E entity) {
    InventoryLog e = new InventoryLog();
    e = (InventoryLog) entity;
    mapper.save(e);
    System.out.println("Print Anything");
    IInfo info = new Info();
    info.setStatus(true);
    return info;
  }
  @Override
  public IInfo update(E entity) {
    return null;
  }
}

我得到的错误是：

ERROR [org.springframework.web.context.ContextLoader] (ServerService Thread Pool -- 81) Context initialization failed: java.lang.NoClassDefFoundError: com/amazonaws/services/dynamodbv2/AmazonDynamoDB
    at java.lang.Class.getDeclaredConstructors0(Native Method) [rt.jar:1.7.0_79]
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2585) [rt.jar:1.7.0_79]
    at java.lang.Class.getDeclaredConstructors(Class.java:1906) [rt.jar:1.7.0_79]

我的申请背景是：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:task="http://www.springframework.org/schema/task"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                               http://www.springframework.org/schema/beans/spring-beans.xsd
                               http://www.springframework.org/schema/mvc
                               http://www.springframework.org/schema/mvc/spring-mvc.xsd
                               http://www.springframework.org/schema/util
                               http://www.springframework.org/schema/util/spring-util-3.0.xsd
                               http://www.springframework.org/schema/task
                               http://www.springframework.org/schema/task/spring-task-3.0.xsd
                               http://www.springframework.org/schema/context
                               http://www.springframework.org/schema/context/spring-context.xsd">

  <task:annotation-driven />


  <context:component-scan base-package="com.rit.randemmiddleware.*" />

  <util:properties id="propertyConfigurer"
                   location="/WEB-INF/configuration/web/WebConfigLocal.properties" />

  <context:property-placeholder properties-ref="propertyConfigurer"
                                location="/WEB-INF/configuration/Environment.properties,
      /WEB-INF/configuration/db/DbConfigLocal.properties" />

  <mvc:annotation-driven />

  <bean
      class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
  <bean
      class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />


  <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix">
      <value>/WEB-INF/view/</value>
    </property>
    <property name="suffix">
      <value>.jsp</value>
    </property>
  </bean>

</beans>

请为此提供解决方案。我是新人。如果可能的话请帮我一个例子，这样我就可以在web应用程序中实现DynamoDB。

DynamoDB Credential初始化使Context初始化失败：java.lang.NoClassDefFoundError：dynamodbv2 / AmazonDynamoDB

0 个答案: