nested exception is java.lang.NoClassDefFoundError: com/mongodb/MongoSocketException

Below are my project details.

POM.xml:

<dependencies>
    <!-- Spring framework START -->
    <!-- http://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>4.0.6.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>4.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>4.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.0.6.RELEASE</version>
    </dependency>

    <!-- http://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>3.2.1.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>4.0.6.RELEASE</version>
    </dependency>

    <!-- http://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.0.6.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-commons</artifactId>
        <version>1.8.2.RELEASE</version>
    </dependency>

    <!-- mongo db driver -->
    <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>mongo-java-driver</artifactId>
        <version>2.11.0</version>
        <!-- <version>3.0.2</version> -->
    </dependency>

    <!-- Jstl for jsp page -->
    <!-- http://mvnrepository.com/artifact/javax.servlet/jstl -->
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!-- Servlet API -->
    <!-- http://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <!-- <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.4</version>
    </dependency> -->


    <!-- JSP API -->
    <!-- http://mvnrepository.com/artifact/javax.servlet.jsp/jsp-api -->
    <!-- <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.1</version>
        <scope>provided</scope>
    </dependency> -->

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>4.0.6.RELEASE</version>
    </dependency>


    <!-- spring mongo driver -->
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-mongodb</artifactId>
        <version>1.5.2.RELEASE</version>
        <!-- <version>1.5.2.RELEASE</version> -->
    </dependency>

    <!-- Spring framework END -->

    <dependency>
        <groupId>commons-net</groupId>
        <artifactId>commons-net</artifactId>
        <version>2.2</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.0.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.0</version>
    </dependency>
    <dependency>
        <artifactId>commons-logging</artifactId>
        <groupId>commons-logging</groupId>
        <version>1.1.1</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.5.8</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.5.8</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>jcl-over-slf4j</artifactId>
        <version>1.5.8</version>
    </dependency>
    <dependency>
        <groupId>taglibs</groupId>
        <artifactId>standard</artifactId>
        <version>1.1.2</version>
    </dependency>

    <dependency>
        <groupId>asm</groupId>
        <artifactId>asm</artifactId>
        <version>3.3.1</version>
    </dependency>
    <dependency>
        <groupId>aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.5.3</version>
    </dependency>
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
        <version>2.2.2</version>
    </dependency>
    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.3</version>
    </dependency>
    <dependency>
        <groupId>commons-collections</groupId>
        <artifactId>commons-collections</artifactId>
        <version>3.2.1</version>
    </dependency>
    <dependency>
        <groupId>commons-httpclient</groupId>
        <artifactId>commons-httpclient</artifactId>
        <version>3.1</version>
    </dependency>
    <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>13.0</version>
    </dependency>

    <dependency>
        <groupId>org.apache.xbean</groupId>
        <artifactId>xbean-spring</artifactId>
        <version>3.2</version>
    </dependency>
WEB.XML is:

<display-name>SpringMVCMongo</display-name>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
</context-param>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<servlet>
    <servlet-name>SpringMVCMongo</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>  
</servlet>

<servlet-mapping>
    <servlet-name>SpringMVCMongo</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>


Dispatcher-servlet.xml is:


    <bean id="mongo" class="org.springframework.data.mongodb.core.MongoFactoryBean">
    <property name="host" value="54.172.243.152" />
    <property name="port" value="27005" />
</bean>
<bean id="mongoCredentials" class="org.springframework.data.authentication.UserCredentials">
    <constructor-arg name="username" value="smynapati" />
    <constructor-arg name="password" value="smynapati" />
    <!-- <constructor-arg name="authSource" value="admin" /> -->
</bean>
<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
    <constructor-arg name="mongo" ref="mongo" />
    <!-- <constructor-arg name="mongoCredentials" ref="mongoCredentials" /> -->
    <constructor-arg name="databaseName" value="test1" />
</bean>
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" /> 
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<context:component-scan base-package="com.userlogin"/>
<bean id="ViewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass"
        value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/WEB-INF/jsp/" />
    <property name="suffix" value=".jsp" />
</bean>

You should upgrade mongo-java-driver version to at least 2.12.0. This is the first version to introduce MongoSocketException (an unchecked exception replacement to a former one).


spring-data-mongodb version 1.5.2.RELEASE is compiled with mongo-java-driver version 2.12.1 which is "older" than the one you've declared in your pom (2.11.0).


You should set it as the fixed dependency version for mongo-java-driver. Meaning change mongo-java-driver from 2.11.0 to 2.12.1



### 解析 `NoClassDefFoundError` 错误 当应用程序尝试在运行时加载指定的类(在此情况下为 `com.aspose.cells.SaveOptions`),但 JVM 或 Java 类加载器无法找到该类定义时,会触发 `java.lang.NoClassDefFoundError` 异常。此问题通常发生在编译期间一切正常但在运行时出现问题的情况下。 对于特定于 Aspose.Cells 的情况,如果遇到 `Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: com/aspose/cells/SaveOptions` 这样的错误消息[^3],可能的原因包括但不限于: - **缺少必要的库文件**:确保所有依赖项都已正确添加到项目的构建路径中。 - **不兼容的版本冲突**:确认使用的 Aspose.Cells 库版本与项目其他部分相匹配。 - **环境差异引起的问题**:有时即使在同一平台上也会由于配置不同而引发此类问题;特别是在从开发环境迁移到生产环境的过程中更为常见。 ### 针对 `com.aspose.cells.SaveOptions` 的解决方案 #### 方法一:验证并更新依赖关系 检查 Maven 或 Gradle 构建工具中的 POM 文件或 build.gradle 文件,以确保包含了最新版的 Aspose.Cells 库,并且其范围设置为 compile 而不是 provided。例如,在 Maven 中应如下所示声明依赖项: ```xml <dependency> <groupId>com.aspose</groupId> <artifactId>aspose-cells</artifactId> <version>LATEST_VERSION_HERE</version> <scope>compile</scope> </dependency> ``` #### 方法二:清理缓存重新安装 有时候 IDE 内部缓存可能导致旧版本被优先考虑。可以通过执行以下命令来清除本地仓库缓存并强制下载最新的依赖项: ```bash mvn clean install -U ``` 或者对于 Gradle 用户来说,则可以使用: ```bash ./gradlew clean build --refresh-dependencies ``` #### 方法三:检查 Classpath 设置 尽管已经提到过 classpath 正确无误[^4],但仍建议再次仔细审查整个项目的结构以及任何自定义的启动脚本,特别是那些用于设置 CLASSPATH 环境变量的部分。此外,还需注意某些框架可能会覆盖默认行为从而影响实际生效的 classpath。 #### 方法四:处理 Linux 上特有的权限和路径问题 考虑到部署目标平台为 Linux 服务器这一事实[^5],还需要特别留意文件系统的访问控制列表 (ACLs),确保应用有足够的读取权限去访问所需的 jar 包和其他资源文件。另外,绝对路径 vs 相对路径的选择也可能成为潜在隐患之一。 通过上述措施应该能够有效解决因缺失 `com.aspose.cells.SaveOptions` 所引起的 `NoClassDefFoundError` 报错现象。
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