无法在flink中运行wordcount示例

import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;

public class WordCountJob {

    public static void main(String[] args) throws Exception {
        // 创建执行环境
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        
        // 读取文本数据流
        DataStream<String> textStream = env.readTextFile("path/to/text/file");

        // 对每个单词进行计数
        DataStream<Tuple2<String, Integer>> wordCount = textStream
                .flatMap((String line, Collector<Tuple2<String, Integer>> out) -> {
                    for (String word : line.split("\\s")) {
                        out.collect(new Tuple2<>(word, 1));
                    }
                })
                .keyBy(0)
                .sum(1);

        // 输出计数结果
        wordCount.print();

        // 执行作业
        env.execute("WordCount Job");
    }
}