我正在嘗試對 Apache Beam 的 MinimalWordCount 示例專案進行簡單的衍生。我開始了一個新專案，而不是下載他們的原型。我遇到了一個明顯常見的問題，通用解決方案沒有解決這個問題：
Exception in thread "main" java.lang.IllegalArgumentException: No Runner was specified and the DirectRunner was not found on the classpath.
Specify a runner by either:
Explicitly specifying a runner by providing the 'runner' property
Adding the DirectRunner to the classpath
Calling 'PipelineOptions.setRunner(PipelineRunner)' directly
SO 上的常見解決方案是添加正確的依賴項，我已經完成了。這是我非常簡單的 POM：
<?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>
<groupId>com.example</groupId>
<artifactId>test_pipeline</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.beam/beam-runners-direct-java -->
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-runners-direct-java</artifactId>
<version>2.33.0</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.beam/beam-sdks-java-core -->
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-core</artifactId>
<version>2.33.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.beam/beam-sdks-java-extensions-json-jackson -->
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-extensions-json-jackson</artifactId>
<version>2.33.0</version>
</dependency>
</dependencies>
</project>
那么如何將直接運行程式添加到我的類路徑中（或以任何其他方式解決此問題）？
uj5u.com熱心網友回復：
嘗試洗掉
<scope>test</scope>
從beam-runners-direct-java依賴。
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