我实际上是在尝试使用 Avro 序列化包含日期的对象,并且反序列化的日期与预期值不匹配(使用 avro 1.7.2 和 1.7.1 测试)。这是我正在序列化的课程:
import java.text.SimpleDateFormat;
import java.util.Date;
public class Dummy {
private Date date;
private SimpleDateFormat df = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss.SSS");
public Dummy() {
}
public void setDate(Date date) {
this.date = date;
}
public Date getDate() {
return date;
}
@Override
public String toString() {
return df.format(date);
}
}
用于序列化/反序列化的代码:
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Date;
import org.apache.avro.Schema;
import org.apache.avro.io.DatumReader;
import org.apache.avro.io.DatumWriter;
import org.apache.avro.io.Decoder;
import org.apache.avro.io.DecoderFactory;
import org.apache.avro.io.Encoder;
import org.apache.avro.io.EncoderFactory;
import org.apache.avro.reflect.ReflectData;
import org.apache.avro.reflect.ReflectDatumReader;
import org.apache.avro.reflect.ReflectDatumWriter;
public class AvroSerialization {
public static void main(String[] args) {
Dummy expected = new Dummy();
expected.setDate(new Date());
System.out.println("EXPECTED: " + expected);
Schema schema = ReflectData.get().getSchema(Dummy.class);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Encoder encoder = EncoderFactory.get().binaryEncoder(baos, null);
DatumWriter<Dummy> writer = new ReflectDatumWriter<Dummy>(schema);
try {
writer.write(expected, encoder);
encoder.flush();
Decoder decoder = DecoderFactory.get().binaryDecoder(baos.toByteArray(), null);
DatumReader<Dummy> reader = new ReflectDatumReader<Dummy>(schema);
Dummy actual = reader.read(null, decoder);
System.out.println("ACTUAL: " + actual);
} catch (IOException e) {
System.err.println("IOException: " + e.getMessage());
}
}
}
和输出:
EXPECTED: 06/11/2012 05:43:29.188
ACTUAL: 06/11/2012 05:43:29.387
它与已知错误有关,还是与我序列化对象的方式有关?