Flink程序运行的时候设置Batch模式报错，提示：please set the 'execution.runtime-mode' to STREAMING or AUTOMATIC

-Dexecution.runtime-mode=BATCH

Exception in thread "main" java.lang.IllegalStateException: Detected an UNBOUNDED source with the 'execution.runtime-mode' set to 'BATCH'. This combination is not allowed, please set the 'execution.runtime-mode' to STREAMING or AUTOMATIC
	at org.apache.flink.util.Preconditions.checkState(Preconditions.java:193)
	at org.apache.flink.streaming.api.graph.StreamGraphGenerator.shouldExecuteInBatchMode(StreamGraphGenerator.java:489)
	at org.apache.flink.streaming.api.graph.StreamGraphGenerator.generate(StreamGraphGenerator.java:313)
	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.getStreamGraph(StreamExecutionEnvironment.java:2248)
	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.getStreamGraph(StreamExecutionEnvironment.java:2239)
	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.getStreamGraph(StreamExecutionEnvironment.java:2225)
	at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:2052)
	at org.example.datastream.WordCount.main(WordCount.java:23)