java.lang.NoClassDefFoundError: org/apache/flink/api/common/functions/FlatMapFunction

Java使用Flink报错

java.lang.NoClassDefFoundError: org/apache/flink/api/common/functions/FlatMapFunction

java.lang.NoClassDefFoundError: org/apache/flink/api/common/functions/FlatMapFunction 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)

错误截图如下：

解决方法

解法方法很简单，按下图做操作即可

1.如下图，点击 Edit Configurations ，进入编辑框

2.如下图，将 Include dependencies with "provided" scope 勾选，点击确定即可