使用IntelliJ IDEA本地启动调试Flink流计算工程的2个异常解决

Myth丶恋晨 2024-04-23 02:33 39阅读 0赞

**记录**：471

**场景**：使用IntelliJ IDEA本地启动调试Flink流计算时，报错一：加载DataStream报错java.lang.ClassNotFoundException。报错二：No ExecutorFactory found to execute the application。

**版本**：JDK 1.8,flink-1.11.6,IntelliJ IDEA 2021.2.3。

**一、解决加载DataStream报错java.lang.ClassNotFoundException**

**1.前提**

在代码工程中已经正确引入flink-streaming-java\_2.11-1.11.6.jar，在此jar包存在org.apache.flink.streaming.api.datastream.DataStream类。

**2.场景**

在执行启动类的main函数时报错。

**3.异常信息**

java.lang.NoClassDefFoundError: org/apache/flink/streaming/api/datastream/DataStream
    	at java.lang.Class.getDeclaredMethods0(Native Method)
    	at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
    	at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
    	at java.lang.Class.getMethod0(Class.java:3018)
    	at java.lang.Class.getMethod(Class.java:1784)
    	at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
    	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
    Caused by: java.lang.ClassNotFoundException: org.apache.flink.streaming.api.datastream.DataStream
    	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    	... 7 more
    Error: A JNI error has occurred, please check your installation and try again

**4.解决**：

(1)选择菜单: Run => Edit Configurations...

(2)在 Run/Debug Configurations页面中，点击: Modify options

(3)在菜单列表中勾选: Add dependencies with "Provided" scope to classpath

(4)点击OK确认保存

菜单列表如图一：

![02839161a3c048608dcfd80c0ef4f73f.png][]

**二、解决No ExecutorFactory found to execute the application异常**

**1.异常信息**

Exception in thread "main" java.lang.IllegalStateException: No ExecutorFactory found to execute the application.
    	at org.apache.flink.core.execution.DefaultExecutorServiceLoader.getExecutorFactory(DefaultExecutorServiceLoader.java:88)
    	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:1764)
    	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1665)
    	at org.apache.flink.streaming.api.environment.LocalStreamEnvironment.execute(LocalStreamEnvironment.java:73)
    	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1651)

**2.解决**

在代码工程pom.xml中添加依赖。

<dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-clients_2.11</artifactId>
        <version>1.11.6</version>
        <scope>provided</scope>
    </dependency>

以上，感谢。

2023年9月5日

[02839161a3c048608dcfd80c0ef4f73f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/23/411be25aadac4abab9fa8d52eb5ed0f0.png