“线程中的异常”；“主要”；java.lang.NoClassDefFoundError:com/amazonaws/endpointdiscovery/EndpointDiscoveryProviderChain

我正在开发一个从dynamoDB中提取数据的工具，并遵循
因此，我有以下代码：

package dynamodbtocsvfile;

import java.util.Map;

import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import com.amazonaws.services.dynamodbv2.model.ScanRequest;
import com.amazonaws.services.dynamodbv2.model.ScanResult;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;

public class dynamoDbScan {

    public dynamoDbScan() {}

    public static void main(String[] args) {
        AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard().build();

        ScanRequest scanRequest = new ScanRequest()
            .withTableName("Reply");

        ScanResult result = client.scan(scanRequest);
        for (Map<String, AttributeValue> item : result.getItems()){
            System.out.println(item);
        }
    }

}

以下是我的.classpath文件内容：

 <?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" output="target/classes" path="main/java">
        <attributes>
            <attribute name="optional" value="true"/>
            <attribute name="maven.pomderived" value="true"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
        <attributes>
            <attribute name="maven.pomderived" value="true"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="src" output="target/test-classes" path="src/test/java">
        <attributes>
            <attribute name="optional" value="true"/>
            <attribute name="maven.pomderived" value="true"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-dynamodb/1.11.456/aws-java-sdk-dynamodb-1.11.456.jar" sourcepath="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-dynamodb/1.11.456/aws-java-sdk-dynamodb-1.11.456-sources.jar">
        <attributes>
            <attribute name="javadoc_location" value="jar:file:/C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-dynamodb/1.11.456/aws-java-sdk-dynamodb-1.11.456-javadoc.jar!/"/>
            <attribute name="maven.pomderived" value="true"/>
            <attribute name="org.eclipse.jst.component.nondependency" value=""/>
            <attribute name="maven.groupId" value="com.amazonaws"/>
            <attribute name="maven.artifactId" value="aws-java-sdk-dynamodb"/>
            <attribute name="maven.version" value="1.11.456"/>
            <attribute name="maven.scope" value="compile"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.24/aws-java-sdk-core-1.11.24.jar" sourcepath="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.24/aws-java-sdk-core-1.11.24-sources.jar">
        <attributes>
            <attribute name="javadoc_location" value="jar:file:/C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.24/aws-java-sdk-core-1.11.24-javadoc.jar!/"/>
            <attribute name="maven.pomderived" value="true"/>
            <attribute name="maven.groupId" value="com.amazonaws"/>
            <attribute name="maven.artifactId" value="aws-java-sdk-core"/>
            <attribute name="maven.version" value="1.11.24"/>
            <attribute name="maven.scope" value="compile"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/org/apache/commons/commons-csv/1.1/commons-csv-1.1.jar"/>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/com/amazonaws/jmespath-java/1.11.66/jmespath-java-1.11.66.jar"/>
    <classpathentry kind="output" path="target/classes"/>
</classpath>

---

非常感谢您的帮助

您是否尝试在同一版本（例如1.11.457）中使用所有SDK依赖项

<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-core</artifactId>
    <version>1.11.457</version>
</dependency>
<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-dynamodb</artifactId>
    <version>1.11.457</version>
</dependency>

亚马逊网站
aws java sdk核心
1.11.457
亚马逊网站
aws java sdk dynamodb
1.11.457

您是如何运行它的（从ide、从maven插件、从cli）？如果是后者，您是否将所有依赖项都包含在类路径中？通常，您可能希望AWS依赖项的版本号保持一致。除此之外，正如@Chris刚才提到的：你是如何调用它的？你在IDE中吗？如果是这样，它是否知道maven？在spring工具套件中运行它

 <?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" output="target/classes" path="main/java">
        <attributes>
            <attribute name="optional" value="true"/>
            <attribute name="maven.pomderived" value="true"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
        <attributes>
            <attribute name="maven.pomderived" value="true"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="src" output="target/test-classes" path="src/test/java">
        <attributes>
            <attribute name="optional" value="true"/>
            <attribute name="maven.pomderived" value="true"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-dynamodb/1.11.456/aws-java-sdk-dynamodb-1.11.456.jar" sourcepath="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-dynamodb/1.11.456/aws-java-sdk-dynamodb-1.11.456-sources.jar">
        <attributes>
            <attribute name="javadoc_location" value="jar:file:/C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-dynamodb/1.11.456/aws-java-sdk-dynamodb-1.11.456-javadoc.jar!/"/>
            <attribute name="maven.pomderived" value="true"/>
            <attribute name="org.eclipse.jst.component.nondependency" value=""/>
            <attribute name="maven.groupId" value="com.amazonaws"/>
            <attribute name="maven.artifactId" value="aws-java-sdk-dynamodb"/>
            <attribute name="maven.version" value="1.11.456"/>
            <attribute name="maven.scope" value="compile"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.24/aws-java-sdk-core-1.11.24.jar" sourcepath="C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.24/aws-java-sdk-core-1.11.24-sources.jar">
        <attributes>
            <attribute name="javadoc_location" value="jar:file:/C:/Users/USERNAME/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.24/aws-java-sdk-core-1.11.24-javadoc.jar!/"/>
            <attribute name="maven.pomderived" value="true"/>
            <attribute name="maven.groupId" value="com.amazonaws"/>
            <attribute name="maven.artifactId" value="aws-java-sdk-core"/>
            <attribute name="maven.version" value="1.11.24"/>
            <attribute name="maven.scope" value="compile"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/org/apache/commons/commons-csv/1.1/commons-csv-1.1.jar"/>
    <classpathentry kind="lib" path="C:/Users/USERNAME/.m2/repository/com/amazonaws/jmespath-java/1.11.66/jmespath-java-1.11.66.jar"/>
    <classpathentry kind="output" path="target/classes"/>
</classpath>

<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-core</artifactId>
    <version>1.11.457</version>
</dependency>
<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-dynamodb</artifactId>
    <version>1.11.457</version>
</dependency>