如何解决mule中的java.lang.ClassNotFoundException：com.sap.conn.jco.JCoException错误？

我在我的项目中使用sap组件。如何解决mule中的java.lang.ClassNotFoundException：com.sap.conn.jco.JCoException错误？

请看下面是我的SAP组件的示例代码：

<sap:connector name="SAP_Configuration" jcoAsHost="${sapbw.host}" jcoUser="${sapbw.user}" jcoPasswd="${sapbw.password}" jcoSysnr="${sapbw.instance}" jcoClient="${sapbw.client}" jcoLang="${sapbw.language}" validateConnections="true" doc:name="SAP"/>

我已经在构建路径中添加需要sapidoc3和sapjco3 jar文件。由于我正在处理窗口操作系统包括sapjco3.dll文件也仍然下注错误。

ERROR 2017-10-06 16:32:32,849 [main] org.mule.module.launcher.DefaultArchiveDeployer: 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 
+ Failed to deploy artifact 'nol-integration-v1.1', see + 
+ below             + 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 
org.mule.module.launcher.DeploymentException: Failed to deploy artifact [nol-integration-v1.1] 
    at org.mule.module.launcher.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:38) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DefaultArchiveDeployer.guardedDeploy(DefaultArchiveDeployer.java:310) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DefaultArchiveDeployer.deployArtifact(DefaultArchiveDeployer.java:330) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DefaultArchiveDeployer.deployPackagedArtifact(DefaultArchiveDeployer.java:155) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DefaultArchiveDeployer.deployPackagedArtifact(DefaultArchiveDeployer.java:256) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DefaultArchiveDeployer.deployPackagedArtifact(DefaultArchiveDeployer.java:78) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DeploymentDirectoryWatcher.deployPackedApps(DeploymentDirectoryWatcher.java:275) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DeploymentDirectoryWatcher.start(DeploymentDirectoryWatcher.java:150) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.MuleDeploymentService.start(MuleDeploymentService.java:100) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.MuleContainer.start(MuleContainer.java:170) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.tooling.server.application.ApplicationDeployer.main(ApplicationDeployer.java:15) ~[tooling-support-3.7.0.jar:?] 
Caused by: java.lang.NoClassDefFoundError: com/sap/conn/jco/JCoException 
    at java.lang.Class.getDeclaredMethods0(Native Method) ~[?:1.8.0_121] 
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[?:1.8.0_121] 
    at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[?:1.8.0_121] 
    at org.springframework.core.type.StandardAnnotationMetadata.hasAnnotatedMethods(StandardAnnotationMetadata.java:129) ~[spring-core-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassUtils.isLiteConfigurationCandidate(ConfigurationClassUtils.java:157) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassUtils.checkConfigurationClassCandidate(ConfigurationClassUtils.java:108) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:278) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:239) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:254) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:94) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:606) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:462) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE] 
    at org.mule.config.spring.SpringRegistry.doInitialise(SpringRegistry.java:108) ~[mule-module-spring-config-3.7.0.jar:3.7.0] 
    at org.mule.registry.AbstractRegistry.initialise(AbstractRegistry.java:104) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.config.spring.SpringXmlConfigurationBuilder.createSpringRegistry(SpringXmlConfigurationBuilder.java:172) ~[mule-module-spring-config-3.7.0.jar:3.7.0] 
    at org.mule.config.spring.SpringXmlConfigurationBuilder.doConfigure(SpringXmlConfigurationBuilder.java:95) ~[mule-module-spring-config-3.7.0.jar:3.7.0] 
    at org.mule.config.builders.AbstractConfigurationBuilder.configure(AbstractConfigurationBuilder.java:43) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure(AbstractResourceConfigurationBuilder.java:69) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.config.builders.AutoConfigurationBuilder.autoConfigure(AutoConfigurationBuilder.java:101) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.config.builders.AutoConfigurationBuilder.doConfigure(AutoConfigurationBuilder.java:52) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.config.builders.AbstractConfigurationBuilder.configure(AbstractConfigurationBuilder.java:43) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure(AbstractResourceConfigurationBuilder.java:69) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.context.DefaultMuleContextFactory$1.configure(DefaultMuleContextFactory.java:89) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.context.DefaultMuleContextFactory.doCreateMuleContext(DefaultMuleContextFactory.java:222) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.context.DefaultMuleContextFactory.createMuleContext(DefaultMuleContextFactory.java:81) ~[mule-core-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.application.DefaultMuleApplication.init(DefaultMuleApplication.java:188) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.artifact.ArtifactWrapper$2.execute(ArtifactWrapper.java:62) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.artifact.ArtifactWrapper.executeWithinArtifactClassLoader(ArtifactWrapper.java:129) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.artifact.ArtifactWrapper.init(ArtifactWrapper.java:57) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:25) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    ... 10 more 
Caused by: java.lang.ClassNotFoundException: com.sap.conn.jco.JCoException 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_121] 
    at org.mule.module.launcher.FineGrainedControlClassLoader.findClass(FineGrainedControlClassLoader.java:175) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.MuleApplicationClassLoader.findClass(MuleApplicationClassLoader.java:134) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at org.mule.module.launcher.FineGrainedControlClassLoader.loadClass(FineGrainedControlClassLoader.java:119) ~[mule-module-launcher-3.7.0.jar:3.7.0] 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_121] 
    at java.lang.Class.getDeclaredMethods0(Native Method) ~[?:1.8.0_121]

来源

2017-10-06 Thiru

你可能会认为你还说，JAR到构建路径;也许不是。这是* runtime *错误。它看起来像包含com.sap.conn.jco.JCoException的JAR不在运行时软件包中，或者它位于错误的地方。检查你的包裹。原生代码？这也会成为一个问题，除非您已正确设置了java.library.path JVM参数。 – duffymo

我可以看到构建路径中的jar文件，但不确定错误背后的确切原因。 – Thiru

构建路径？他们是否在您部署的JAR中？如果没有，Spring Boot将不会找到它们。 – duffymo

如果JCO类不能找到它或者是因为sapjco3.jar真的不是在类路径或JCO初始化失败，例如在装载了本地库。

您是否选择了适合您的JVM（32位与64位）的正确JCo本机库？如果您使用的是32位JVM，即使在64位操作系统上运行，也需要安装32位版本的JCo。

我不知道Mule，但SAP建议不要将sapjco3.jar与Java应用程序一起部署到应用程序服务器运行时环境中。因为JCo的本地库只能加载一次，所以最好把它当作一个系统库，即把它放入Mule启动类路径本身。否则，第二个应用程序（也包含sapjco3.jar）的启动可能会失败。

来源

2017-10-09 15:45:43 Trixx

如果你的项目Maven化再加入这个依赖于POM：

<dependency> 
<groupId>org.hibersap</groupId> 
<artifactId>sapjco3</artifactId> 
<version>3.0-RC02</version> 
</dependency>

来源

2017-10-12 13:06:30

如何解决mule中的java.lang.ClassNotFoundException：com.sap.conn.jco.JCoException错误？

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