Java: GetResourceAsStream Returns NULL

instruction

My situation may be one of the reasons, this article provides reference to the old iron

reason

My previous code is part of the getResourceAsStream, and there will be returned to NULL after adding.
Later I executedmvn clean Then take effect

Code

import org.apache.avro.Schema;
import org.apache.avro.generic.GenericData;
import org.apache.avro.generic.GenericDatumReader;
import org.apache.avro.generic.GenericDatumWriter;
import org.apache.avro.generic.GenericRecord;
import org.apache.avro.io.*;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

public class BaseDemon {
    public static void main(String[] args) throws IOException {
        Schema.Parser parser = new Schema.Parser();
        / / Here is GetResourceAsStream
        Schema schema = parser.parse(BaseDemon.class.getResourceAsStream("avro/StringPair.avsc"));
// input
        GenericRecord genericRecord = new GenericData.Record(schema);
        genericRecord.put("left", "L");
        genericRecord.put("right", "R");
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        DatumWriter<GenericRecord> writer = new GenericDatumWriter<>(schema);
        Encoder encode = EncoderFactory.get().binaryEncoder(out, null);
        writer.write(genericRecord, encode);
        encode.flush();
        out.close();
        // output
        DatumReader<GenericRecord> reader = new GenericDatumReader<>(schema);
        Decoder decoder = DecoderFactory.get().binaryDecoder(out.toByteArray(), null);
        GenericRecord result = reader.read(null, decoder);
        System.out.println(result.get("left"));
        System.out.println(result.get("right"));
    }
}

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