flink-java版学习-2-source连接之本地文件

   

 

         flink本地测试大多数时候读的都是本地的数据集，记录下：

1、本地的sensor.txt文件

sensor_1,1547718200,35.8
sensor_1,1547719200,37.8
sensor_1,1547718280,34.8
sensor_6,1547718201,35.5
sensor_7,1547718214,35.3
sensor_10,1547718234,15.8
sensor_1,1547718289,55.8

2、读取代码如下，之后会频繁的用这个形式：

package com.shihuo.apitest_source;

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

public class SensorTest2_File {
    public static void main(String[] args) throws Exception {
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        //从文件读取数据
        DataStream<String> dataStream = env.readTextFile("/Users/wangyuhang/Desktop/FlinkTutorial/src/main/resources/sensor.txt");
        env.setParallelism(1);

        //打印输出
        dataStream.print();

        env.execute();
    }
}

3、打印结果