问题

我正在尝试在Gradle项目中使用Camel 3.5实现一个定时器，使用OpenJDK 8作为下一个版本。

from("timer://watchexpiration?fixedRate=true&amp;period=600000&amp;delay=0")...

但是，在使用```./gradlew build```构建了fat jar之后，并且使用```java -jar build/libs/app.jar```运行后，我在控制台上收到了以下错误：

Caused by: org.apache.camel.ResolveEndpointFailedException: 无法解析端点：timer://watchexpiration?delay=0&amp;fixedRate=true&amp;period=600000，原因是：无法将属性（delay=0）与名称（delay）绑定到bean上：timer://watchexpiration?delay=0&amp;fixedRate=true&amp;period=600000，其值为：0
    at org.apache.camel.impl.engine.AbstractCamelContext.doGetEndpoint(AbstractCamelContext.java:888)
    at org.apache.camel.impl.engine.AbstractCamelContext.getEndpoint(AbstractCamelContext.java:777)
    at org.apache.camel.support.CamelContextHelper.getMandatoryEndpoint(CamelContextHelper.java:58)
    at org.apache.camel.reifier.AbstractReifier.resolveEndpoint(AbstractReifier.java:177)
    at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:250)
    at org.apache.camel.reifier.RouteReifier.createRoute(RouteReifier.java:112)

但是，如果我使用```./gradlew run```运行，则**正常工作**，与我预期的一样。
我不想为这个项目使用任何框架。我觉得这只是一个配置问题，或者我的配置有些问题。

我该如何解决？

build.gradle
```groovy
plugins {
    id 'java'
    id 'application'
    id 'com.github.sherter.google-java-format' version '0.8'
}

repositories {
    jcenter()
}

dependencies {
    implementation 'com.google.guava:guava:29.0-jre'
    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.6.2'
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.6.2'
    // Camel
    compile group: 'org.apache.camel', name: 'camel-core', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-file', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-file-watch', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-xstream', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-gson', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-rest', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-servlet', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-http', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-jackson', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-quartz', version: '3.5.0'
    compile group: 'org.apache.camel', name: 'camel-timer', version: '3.5.0'

    compile group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.30'
    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.30'

    // Dev Libs
    compileOnly("org.projectlombok:lombok:1.18.12")
    annotationProcessor("org.projectlombok:lombok:1.18.12")

    compile group: 'org.apache.commons', name: 'commons-csv', version: '1.4'
}

application {
    mainClassName = 'com.eip.App'
}

configurations {
    // configuration that holds jars to include in the jar
    extraLibs
}

jar {
    manifest {
        attributes(
                'Main-Class': 'com.beam.agent.App'
        )
    }
    from {
        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
    }
}

test {
    useJUnitPlatform()
}

googleJavaFormat {
    exclude '**/App.java'
}

英文:

I'm trying to implement a timer using Camel 3.5 at Gradle project with OpenJDK8 as next

     from(&quot;timer://watchexpiration?fixedRate=true&amp;period=600000&amp;delay=0&quot;)...

But, after build the fat jar using ./gradlew build and run as java -jar build/libs/app.jar

I receive the next error at console

Caused by: org.apache.camel.ResolveEndpointFailedException: Failed to resolve endpoint: timer://watchexpiration?delay=0&amp;fixedRate=true&amp;period=600000 due to: Error binding property (delay=0) with name: delay on bean: timer://watchexpiration?delay=0&amp;fixedRate=true&amp;period=600000 with value: 0
at org.apache.camel.impl.engine.AbstractCamelContext.doGetEndpoint(AbstractCamelContext.java:888)
at org.apache.camel.impl.engine.AbstractCamelContext.getEndpoint(AbstractCamelContext.java:777)
at org.apache.camel.support.CamelContextHelper.getMandatoryEndpoint(CamelContextHelper.java:58)
at org.apache.camel.reifier.AbstractReifier.resolveEndpoint(AbstractReifier.java:177)
at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:250)
at org.apache.camel.reifier.RouteReifier.createRoute(RouteReifier.java:112)

But If I run using ./gradlew run then works fine as I expected.
I don't want to use any frameworks for this project. I feel this is just a config issue or something is wrong with my configuration I guess.

How can I fix it?

build.gradle

plugins {
    id &#39;java&#39;
    id &#39;application&#39;
    id &#39;com.github.sherter.google-java-format&#39; version &#39;0.8&#39;
}

repositories {
    jcenter()
}

dependencies {
    implementation &#39;com.google.guava:guava:29.0-jre&#39;
    testImplementation &#39;org.junit.jupiter:junit-jupiter-api:5.6.2&#39;
    testRuntimeOnly &#39;org.junit.jupiter:junit-jupiter-engine:5.6.2&#39;
    // Camel
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-core&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-file&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-file-watch&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-xstream&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-gson&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-rest&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-servlet&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-http&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-jackson&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-quartz&#39;, version: &#39;3.5.0&#39;
    compile group: &#39;org.apache.camel&#39;, name: &#39;camel-timer&#39;, version: &#39;3.5.0&#39;

    compile group: &#39;org.slf4j&#39;, name: &#39;slf4j-simple&#39;, version: &#39;1.7.30&#39;
    compile group: &#39;org.slf4j&#39;, name: &#39;slf4j-api&#39;, version: &#39;1.7.30&#39;

    // Dev Libs
    compileOnly(&quot;org.projectlombok:lombok:1.18.12&quot;)
    annotationProcessor(&quot;org.projectlombok:lombok:1.18.12&quot;)

    compile group: &#39;org.apache.commons&#39;, name: &#39;commons-csv&#39;, version: &#39;1.4&#39;
}

application {
    mainClassName = &#39;com.eip.App&#39;
}

configurations {
    // configuration that holds jars to include in the jar
    extraLibs
}

jar {
    manifest {
        attributes(
                &#39;Main-Class&#39;: &#39;com.beam.agent.App&#39;
        )
    }
    from {
        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
    }
}

test {
    useJUnitPlatform()
}

googleJavaFormat {
    exclude &#39;**/App.java&#39;
}

答案1

得分: 1

Shadowing jars can be tricky, because you need to handle duplicate entries. In Apache Camel, there are many META-INF service files, which are getting overwritten with your simple jar approach. Use com.github.johnrengelman.shadow which allows you to customize the merging process.

plugins {
    id 'java'
    id 'application'
    id 'com.github.sherter.google-java-format' version '0.8'
    id "com.github.johnrengelman.shadow" version "6.0.0" // Added plugin
}
repositories {
    jcenter()
}
dependencies {
    // ...
}
application {
    mainClassName = 'com.eip.App'
}
// Removed jar step
test {
    useJUnitPlatform()
}
googleJavaFormat {
    exclude '**/App.java'
}
// Added shadow plugin configuration
shadowJar {
    mergeServiceFiles() // Tell the plugin to merge duplicate service files
    manifest {
        attributes 'Main-Class': 'com.eip.App'
    }
}
apply plugin: 'com.github.johnrengelman.shadow'

The shaded executable jar will have the suffix -all.jar.

java -jar build/libs/app-all.jar

英文:

Shadowing jars can be tricky, because you need to handle duplicate entries. In Apache Camel there are many META-INF service files, which are getting overwritten with your simple jar approach. Use com.github.johnrengelman.shadow which is allowing you to customize the merging process.

plugins {
id &#39;java&#39;
id &#39;application&#39;
id &#39;com.github.sherter.google-java-format&#39; version &#39;0.8&#39;
id &quot;com.github.johnrengelman.shadow&quot; version &quot;6.0.0&quot; // Added plugin
}
repositories {
jcenter()
}
dependencies {
// ...
}
application {
mainClassName = &#39;com.eip.App&#39;
}
// Removed jar step
test {
useJUnitPlatform()
}
googleJavaFormat {
exclude &#39;**/App.java&#39;
}
// Added shadow plugin configuration
shadowJar {
mergeServiceFiles() // Tell plugin to merge duplicate service files
manifest {
attributes &#39;Main-Class&#39;: &#39;com.eip.App&#39;
}
}
apply plugin: &#39;com.github.johnrengelman.shadow&#39;

Shaded executable jar will have suffix -all.jar

java -jar build/libs/app-all.jar

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