Question

我正在尝试读取文件中的一行，在spout中，然后将其发送到螺栓，但我不断收到流关闭错误。我关闭它错了或者这里有什么问题？

public class InputSpout extends BaseRichSpout {
    private SpoutOutputCollector collector;
    public void
    declareOutputFields( OutputFieldsDeclarer declarer) {
        declarer.declare( new Fields("logfile"));
    }
    private FileReader fileReader;
    private boolean completed = false;
    private TopologyContext context;
    @Override
    public void open( Map config, TopologyContext context, SpoutOutputCollector collector) { 
        try {
            this.context = context;
            this.fileReader = new FileReader(("logfile.txt").toString());
        } catch (FileNotFoundException e) {
            throw new RuntimeException("Error reading file "
                    + ("logfile"));
        }
        this.collector = collector;
    }
    public void nextTuple() {


        if (completed) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {

            }
        }
        String str;
        BufferedReader reader = new BufferedReader(fileReader);
        str = null;
        try {
            str = reader.readLine();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        try {
            while (str != null) {
                this.collector.emit(new Values(str));
                str = reader.readLine();
            }

        } catch (Exception e) {
            throw new RuntimeException("Error reading typle", e);
        } finally {
            completed = true;
        }
        try {
            reader.close();
            fileReader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

这是我得到的错误：

java.io.IOException：Stream已关闭 at sun.nio.cs.StreamDecoder.ensureOpen（StreamDecoder.java:46） at sun.nio.cs.StreamDecoder.read（StreamDecoder.java:147）在java.io.InputStreamReader.read（InputStreamReader.java:184）在java.io.BufferedReader.fill（BufferedReader.java:154）在java.io.BufferedReader.readLine（BufferedReader.java:317）在java.io.BufferedReader.readLine（BufferedReader.java:382） at myStorm.InputSpout.nextTuple（InputSpout.java:52） at backtype.storm.daemon.executor $ fn__4654 $ fn__4669 $ fn__4698.invoke（executor.clj：565） at backtype.storm.util $ async_loop $ fn__458.invoke（util.clj：463）在clojure.lang.AFn.run（AFn.java:24）在java.lang.Thread.run（Thread.java:745）

Answer 1

您正在关闭array([False, True, False, True, True, True], dtype=bool)中InputStream使用的fileReader，使其无法用于后续通话。无需关闭此nextTuple - 只需在读取所有数据后关闭单个Reader。

流关闭错误 - 风暴

1 个答案: