在Google App Engine Standard上运行Spring Boot Application时发生javax.el.E​​xpressionFactory错误 [英] javax.el.ExpressionFactory Error when running Spring Boot Application on Google App Engine Standard

问题描述

我正在尝试在Google App Engine上部署Spring Boot应用程序，但是在尝试调用与该应用程序关联的任何API时收到以下错误日志.

I am trying to deploy my Spring Boot application on Google App Engine, however I receive the following error logs when attempting to call any of the APIs associated with the app.

无法初始化'javax.el.E​​xpressionFactory'.检查你有 EL对类路径的依赖，或者使用 而不是ParameterMessageInterpolator org.eclipse.jetty.annotations.ServletContainerInitializersStarter.doStart(ServletContainerInitializersStarter.java:68) 在 org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) 在 org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:330) 在 org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1406) 在 org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1368) 在 org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:778) 在 org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:262) 在 org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:522) 在 org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) 在 com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:244) 在 com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:182) 在 com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:97) 在 com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.dispatchServletRequest(JavaRuntime.java:657) 在 com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.dispatchRequest(JavaRuntime.java:619) 在 com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run(JavaRuntime.java:589) 在 com.google.apphosting.runtime.JavaRuntime $ NullSandboxRequestRunnable.run(JavaRuntime.java:783) 在 com.google.apphosting.runtime.ThreadGroupPool $ PoolEntry.run(ThreadGroupPool.java:263) 在java.lang.Thread.run(Thread.java:745)造成原因: org.springframework.beans.factory.UnsatisfiedDependencyException: 使用名称创建bean时出错 'org.springframework.scheduling.annotation.ProxyAsyncConfiguration': 通过方法"setConfigurers"表达的不满意的依赖关系 参数0;嵌套的异常是 org.springframework.beans.factory.UnsatisfiedDependencyException: 创建名称为'asyncConfiguration'的bean时出错

Unable to initialize 'javax.el.ExpressionFactory'. Check that you have the EL dependencies on the classpath, or use ParameterMessageInterpolator instead at org.eclipse.jetty.annotations.ServletContainerInitializersStarter.doStart(ServletContainerInitializersStarter.java:68) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:330) at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1406) at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1368) at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:778) at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:262) at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:522) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:244) at com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:182) at com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:97) at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchServletRequest(JavaRuntime.java:657) at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchRequest(JavaRuntime.java:619) at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:589) at com.google.apphosting.runtime.JavaRuntime$NullSandboxRequestRunnable.run(JavaRuntime.java:783) at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:263) at java.lang.Thread.run(Thread.java:745) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.scheduling.annotation.ProxyAsyncConfiguration': Unsatisfied dependency expressed through method 'setConfigurers' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'asyncConfiguration'

但是，仅当我在Google App Engine上运行我的应用程序时，才会发生此错误.如果我在本地打包并运行它，则该应用程序将按预期运行.

However, this error only occurs when I run my app on Google App Engine. If I package it locally and run it, the app works as expected.

有什么想法可能导致此问题?谢谢！

Any ideas what might be causing this issue? Thanks you!

推荐答案

确保您具有el依赖项；

Make sure you have the el dependency;

    <dependency>
        <groupId>org.glassfish</groupId>
        <artifactId>javax.el</artifactId>
        <version>3.0.1-b08</version>
    </dependency>

还要在您的appengine-web.xml中添加一个env-variables条目；

Also add a env-variables entry to your appengine-web.xml;

    <env-variables>
        <env-var name="javax.el.ExpressionFactory" value="com.sun.el.ExpressionFactoryImpl" />
    </env-variables>

并添加文件"META-INF/services/javax.el.E​​xpressionFactory" 内容:

And add the file 'META-INF/services/javax.el.ExpressionFactory' with the contents:

    com.sun.el.ExpressionFactoryImpl

这篇关于在Google App Engine Standard上运行Spring Boot Application时发生javax.el.E​​xpressionFactory错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！