我目前正在尝试在我的项目中使用AWS SDK(特别是s3 SDK),但不断获得异常
java.lang.NoClassDefFoundError:com/amazonaws/services/s3/AmazonS3ClientBuilder
我已使用maven将SDK导入我的项目,如SDK文档here中所示。我正在运行的导致这种情况发生的代码是
AmazonS3 amazonS3 = AmazonS3ClientBuilder.standard().withRegion(Regions.EU_WEST_1).build();
我怀疑这个问题可能是由于杰克逊版本在AWS SDK所要求的版本与我自己导入的版本之间发生冲突而发生的,否则在项目的其他地方使用虽然改变了这一点似乎没有解决问题。我将在下面添加我的POM.xml
文件。
提前致谢。
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.projectname.restservice</groupId>
<artifactId>ProjectName</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>ProjectName</name>
<build>
<finalName>ProjectName</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
<version>2.16</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-bom</artifactId>
<version>1.11.22</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
</dependency>
<!--Removed due to possible conflict with AWS SDK?-->
<!--<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
</dependency>-->
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-multipart</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-s3</artifactId>
</dependency>
</dependencies>
输出:mvn dependency:tree -Dverbose -Dincludes=com.amazonaws
com.trailfinder.restservice:TrailFinderRestService:war:1.0-SNAPSHOT
[INFO] \- com.amazonaws:aws-java-sdk-s3:jar:1.11.22:compile
[INFO] +- com.amazonaws:aws-java-sdk-kms:jar:1.11.22:compile
[INFO] | \- (com.amazonaws:aws-java-sdk-core:jar:1.11.22:compile - omitted for duplicate)
[INFO] \- com.amazonaws:aws-java-sdk-core:jar:1.11.22:compile
答案 0 :(得分:0)
我想,我已经找到了解决此问题的解决方案/解决方法。感谢来自@DaveMaple的建议,我尝试通过命令行构建应用程序并手动部署.war,这似乎有效。
根据this question IntelliJ IDEA使用自己的构建过程而不是Mavens。这让我相信问题出在IntelliJ的构建过程中,与AWS SDK或Maven无关。要解决此问题,我将IntelliJ配置为不使用自己的构建过程,而是使用Maven,然后部署生成的.war。有关如何执行此操作的说明,请参见here.