Cannot find compatible factory for specified execution.target (=local)

背景描述

本地運行Flink入門的word count項目，但是運行是報錯，提示如下信息。

錯誤信息

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" java.lang.NullPointerException: Cannot find compatible factory for specified execution.target (=local)
	at org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:104)
	at org.apache.flink.api.java.ExecutionEnvironment.executeAsync(ExecutionEnvironment.java:937)
	at org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:860)
	at org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:844)
	at org.apache.flink.api.java.DataSet.collect(DataSet.java:413)
	at org.apache.flink.api.java.DataSet.printToErr(DataSet.java:1672)
	at com.scnuwang.Application.main(Application.java:23)

解決方案

註釋掉pom文件裏面的 **<scope>provided</scope>**，因爲provided表明該包只在編譯和測試的時候用的。

完整的依賴信息如下：

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-java -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-java</artifactId>
            <version>1.10.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-streaming-java -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-java_2.11</artifactId>
            <version>1.10.0</version>
            <!-- <scope>provided</scope> -->
        </dependency>

    </dependencies>