问题描述
我正在自定义构建SCDF 2.6.1（我想专门构建此版本）以添加oracle驱动程序。以下是相同的POM配置。我可以在openshift环境中成功构建。但是，当我启动应用程序时，出现以下异常。
例外：
2020-09-03 11:29:40.522 WARN 13716 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.cloud.dataflow.completion.CompletionConfiguration': Unsatisfied dependency expressed through field 'streamDeFinitionService'; nested exception is org.springframework.beans.factory.NoSuchBeanDeFinitionException: No qualifying bean of type 'org.springframework.cloud.dataflow.core.StreamDeFinitionService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Description:
Field streamDeFinitionService in org.springframework.cloud.dataflow.completion.CompletionConfiguration required a bean of type 'org.springframework.cloud.dataflow.core.StreamDeFinitionService' that Could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type 'org.springframework.cloud.dataflow.core.StreamDeFinitionService' in your configuration.
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.8.RELEASE</version>
<relativePath />
</parent>
<groupId>com.example.com</groupId>
<artifactId>BatchAdmin</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>FACAdmin</name>
<description>Custom Build SCDF project</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Hoxton.SR4</spring-cloud.version>
<spring-cloud-dataflow.version>2.6.1.RELEASE</spring-cloud-dataflow.version>
<spring-security-oauth2.version>2.3.7.RELEASE</spring-security-oauth2.version>
<mariadb.version>2.4.1</mariadb.version>
<kubernetes-client.version>4.1.0</kubernetes-client.version>
<nimbus-jose-jwt.version>8.17</nimbus-jose-jwt.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-dataflow-server -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-dataflow-server</artifactId>
<version>2.6.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dataflow-server-core</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security.oauth</groupId>
<artifactId>spring-security-oauth2</artifactId>
<version>${spring-security-oauth2.version}</version>
</dependency>
<dependency>
<groupId>io.fabric8</groupId>
<artifactId>kubernetes-client</artifactId>
<version>${kubernetes-client.version}</version>
</dependency>
<dependency>
<groupId>com.nimbusds</groupId>
<artifactId>nimbus-jose-jwt</artifactId>
<version>${nimbus-jose-jwt.version}</version>
</dependency>
<dependency>
<groupId>com.oracle.database.jdbc</groupId>
<artifactId>ojdbc8</artifactId>
<version>12.2.0.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-release</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/release</url>
</repository>
</repositories>
</project>
根据错误提示，我尝试在自定义构建项目主类中提供Bean。但这会引发与任务有关的另一个错误。
StreamDeFinitionService Bean方法
public static void main(String[] args) {
SpringApplication.run(CustomDataflowServerApplication.class,args);
}
@Bean
public StreamDeFinitionService getStreamDeFinitionService() {
return new StreamDeFinitionService() {
@Override
public String redactDsl(StreamDeFinition streamDeFinition) {
// Todo Auto-generated method stub
return null;
}
@Override
public StreamNode parse(StreamDeFinition streamDeFinition) {
// Todo Auto-generated method stub
return null;
}
@Override
public LinkedList<StreamAppDeFinition> getAppDeFinitions(StreamDeFinition streamDeFinition) {
// Todo Auto-generated method stub
return null;
}
@Override
public String constructDsl(String originalDslText,LinkedList<StreamAppDeFinition> streamAppDeFinitions) {
// Todo Auto-generated method stub
return null;
}
};
}
[org.springframework.cloud.dataflow.server.service.TaskExecutionInfoService]: Factory method 'taskDeFinitionRetriever' threw exception; nested exception is java.lang.IllegalArgumentException: taskPlatform must not be empty or null
我不会在项目中使用Stream。我的兴趣只是任务。那么，是否有必要排除流功能以避免上述错误？
解决方法
如果您只是想将Oracle驱动程序添加到SCDF / Skipper Spring Boot应用程序中，那么您所要做的就是将相应的uber-jar与额外的driver-jar一起打包在类路径中。
我们有documentation关于如何添加仅所选驱动程序的信息。在Adding JDBC Driver部分下查找特定步骤。
我们还有完整的custom-build个SCDF样本-请随时使用它作为参考。