Apache camel Camel 3.2和Javascript

我们正忙于将camel路由从2.x升级到3.2，并且在使用JavaScript时遇到了问题。在我们的应用程序中，JavaScript被广泛用于将简单JSON转换为其他JSON。我们也广泛使用XMLDSL。我们的典型模式类似于以下简化代码：

   <transform id="transform_customer_response">
   <javaScript>
      <![CDATA[
           (function map() {
                var msg = {
                             name: request.body.name,
                             hash: request.headers.hash
                          };            
                return JSON.stringify(msg);
                })()
        ]>
     </javaScript>
   </transform>

完整堆栈跟踪：

org.apache.camel.FailedToCreateRouteException: Failed to create route createCustomerRoute at: >>> Transform[javascript{


                            (function map() {
                                var msg = {
                                    name: request.body.name,
                                    hash: request.headers.hash
                                };          
                                return JSON.stringify(msg);
                            })()


            }] <<< in route: Route(createCustomerRoute)[From[direct:create_customer] -> [... because of No language could be found for: javascript
    at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:393) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.reifier.RouteReifier.createRoute(RouteReifier.java:117) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at `No language could be found for: javascript`org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:353) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:327) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.impl.engine.AbstractCamelContext.doInit(AbstractCamelContext.java:2598) ~[camel-base-3.2.0.jar:3.2.0]
    at org.apache.camel.support.service.BaseService.init(BaseService.java:83) ~[camel-api-3.2.0.jar:3.2.0]
    at org.apache.camel.impl.engine.AbstractCamelContext.init(AbstractCamelContext.java:2431) ~[camel-base-3.2.0.jar:3.2.0]
    at org.apache.camel.support.service.BaseService.start(BaseService.java:111) ~[camel-api-3.2.0.jar:3.2.0]
    at org.apache.camel.impl.engine.AbstractCamelContext.start(AbstractCamelContext.java:2448) ~[camel-base-3.2.0.jar:3.2.0]
    at org.apache.camel.spring.SpringCamelContext.start(SpringCamelContext.java:121) ~[camel-spring-3.2.0.jar:3.2.0]
    at org.apache.camel.spring.CamelContextFactoryBean.start(CamelContextFactoryBean.java:373) ~[camel-spring-3.2.0.jar:3.2.0]
    at org.apache.camel.spring.CamelContextFactoryBean.onApplicationEvent(CamelContextFactoryBean.java:420) ~[camel-spring-3.2.0.jar:3.2.0]
    at org.apache.camel.spring.CamelContextFactoryBean.onApplicationEvent(CamelContextFactoryBean.java:94) ~[camel-spring-3.2.0.jar:3.2.0]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:897) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:162) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
    at com.ventia.nexusarchetype.NexusArchetypeApplication.main(NexusArchetypeApplication.java:12) ~[classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.2.6.RELEASE.jar:2.2.6.RELEASE]
Caused by: org.apache.camel.NoSuchLanguageException: No language could be found for: javascript
    at org.apache.camel.impl.engine.DefaultLanguageResolver.noSpecificLanguageFound(DefaultLanguageResolver.java:92) ~[camel-base-3.2.0.jar:3.2.0]
    at org.apache.camel.impl.engine.DefaultLanguageResolver.resolveLanguage(DefaultLanguageResolver.java:68) ~[camel-base-3.2.0.jar:3.2.0]
    at org.apache.camel.impl.engine.AbstractCamelContext.resolveLanguage(AbstractCamelContext.java:1726) ~[camel-base-3.2.0.jar:3.2.0]
    at `No language could be found for: javascript`org.apache.camel.reifier.language.ExpressionReifier.createExpression(ExpressionReifier.java:116) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.reifier.AbstractReifier.createExpression(AbstractReifier.java:102) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.reifier.TransformReifier.createProcessor(TransformReifier.java:34) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.reifier.ProcessorReifier.makeProcessor(ProcessorReifier.java:766) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.reifier.ProcessorReifier.addRoutes(ProcessorReifier.java:511) ~[camel-core-engine-3.2.0.jar:3.2.0]
    at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:391) ~[camel-core-engine-3.2.0.jar:3.2.0]
    ... 32 common frames omitted

这是可行的，我可以使用groovy转换一个实体，并且没有任何问题。因此，当我尝试在下面添加deptency时，我缺少一个javascript依赖项/开始，但没有找到。我也检查了maven，但找不到适用于camel 3.2的camel javascript初学者

        <dependency>
            <groupId>org.apache.camel.springboot</groupId>
            <artifactId>camel-javascript-starter</artifactId>

            <!-- use the same version as your Camel core version -->
        </dependency>

org.apache.camel.springboot
驼峰javascript启动程序

看起来JavaScript已经完全被弃用了。然而，该文件仍然暗示它是可用的

请参阅下面的文档片段：

语言名称：

必需设置要使用的语言的名称。该值可以是以下值之一：bean、constant、exchangeProperty、file、groovy、header、javascript、jsonpath、mvel、ognl、ref、simple、spel、sql、terser、tokenize、xpath、xquery、xtokenize

---

简而言之，要么Camel 3.2缺少依赖性，要么Javascript已被弃用。或者我完全遗漏了什么。

Javascript语言是

驼峰脚本

依赖项的一部分。它在2.x中被弃用，在3.x中被删除。这是因为Nashorn引擎在JDK11（）中被弃用，并计划从下一个JDK版本（）中删除。Nashorn引擎在

camel脚本中大量使用

目前Apache Camel中没有直接的替代品。我已登录以查找备用发动机。
谢谢，我怀疑是这样的。
        <dependency>
            <groupId>org.apache.camel.springboot</groupId>
            <artifactId>camel-groovy-starter</artifactId>

            <!-- use the same version as your Camel core version -->
        </dependency>



        <dependency>
            <groupId>org.apache.camel.springboot</groupId>
            <artifactId>camel-javascript-starter</artifactId>

            <!-- use the same version as your Camel core version -->
        </dependency>