我们正在将骆驼路线从2.x升级到3.2，我们在使用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XML DSL。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>
我了解<javaScript>语言组件已在Camel 3中弃用并删除，因为最新文档未显示此内容。但是，似乎[<language language="javascript">]标签仍支持JavaScript。
其他背景信息：] >>
我曾尝试将上面的代码翻译成下面的代码，但出现No language could be found for: javascript异常。
<language language="javascript"> (function map() { var msg = { name: request.body.name, hash: request.headers.hash }; return JSON.stringify(msg); })() </language>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我尝试使用产生
No language could be found for: groovy的常规方法。然后，我为groovy添加依赖项，如下所示：
<dependency> <groupId>org.apache.camel.springboot</groupId> <artifactId>camel-groovy-starter</artifactId> <!-- use the same version as your Camel core version --> </dependency>这项工作，我可以使用groovy来变换身体，没有问题。因此，当我尝试在下面添加依赖关系时，我缺少javascript依赖关系/启动。我也检查了Maven，但找不到Camel 3.2的camel-javascript-starter。
<dependency> <groupId>org.apache.camel.springboot</groupId> <artifactId>camel-javascript-starter</artifactId> <!-- use the same version as your Camel core version --> </dependency>看来JavaScript已被完全弃用。但是文档仍然暗示它可用。
请参见下面的文档摘要：
语言名称：
必填设置要使用的语言名称。该值可以是以下之一：bean，常量，exchangeProperty，文件，groovy，标头，javascript，jsonpath，mvel，ognl，ref，简单，spel，sql，terser，tokenize，xpath，xquery，xtokenize
简而言之，要么是缺少Camel 3.2的依赖项
，要么是已弃用Java语言。还是我完全错过了一些东西。我们正在将骆驼路线从2.x升级到3.2，我们在使用JavaScript时遇到了问题。在我们的应用程序中，JavaScript被广泛用于将简单的JSON转换为其他...
Java语言是camel-script依赖项的一部分。它已在2.x中弃用，并在[x]中用CAMEL-13113删除了。这是因为在camel-script中大量使用的Nashorn引擎在JDK11（JEP 335）中已弃用，并计划从下一个JDK版本（JEP 372）中删除。