Closed
Description
Describe the bug
Got KryoException: Buffer underflow when I try to deserialize data after remove a field with Collection type from the class.
To Reproduce
First, serialize the original object.
public static class A {
public List<String> aaa = new ArrayList<>();
public String bbb = "bbb";
public String ddd = bbb;
}
@Test
public void test_kryo5() {
A a = new A();
a.aaa.add("a");
byte[] bytes = new KryoSerializeUtil().serialize(a);
String s = Base64.getEncoder().encodeToString(bytes);
System.out.println(s);
}Then, comment field aaa, and run
@Test
public void test_kryo5Deserialize() {
// the serialized data from above
String s = "AQBjb20ucGRkLmJpZ2RhdGEucmlzay5wdWJsaXNoLmNvbnRyYWN0LnV0aWxzLkNoZWNrc3VtVXRpbFRlc3QkwQEDYWHhYmLiZGTkGgEBamF2YS51dGlsLkFycmF5TGlz9AECAYJhAAUDAWJi4gACAwUA";
A a = deserialize(Base64.getDecoder().decode(s));
System.out.println(a.ddd);
}Got
00:00 DEBUG: [kryo] Unable to read unknown data, type: java.util.ArrayList (com.pdd.bigdata.risk.publish.contract.utils.ChecksumUtilTest$A#null)
com.esotericsoftware.kryo.kryo5.KryoException: Buffer underflow.
at com.esotericsoftware.kryo.kryo5.io.Input.require(Input.java:219)
at com.esotericsoftware.kryo.kryo5.io.Input.readVarIntFlag(Input.java:480)
at com.esotericsoftware.kryo.kryo5.io.Input.readString(Input.java:775)
FYI, The kryo I use:
private static Kryo kryo = new Kryo();
static {
kryo.setReferences(true);
kryo.setRegistrationRequired(false);
CompatibleFieldSerializer.CompatibleFieldSerializerConfig config =
new CompatibleFieldSerializer.CompatibleFieldSerializerConfig();
config.setChunkedEncoding(true);
config.setReadUnknownFieldData(true);
kryo.setDefaultSerializer(new SerializerFactory.CompatibleFieldSerializerFactory(config));
kryo.setInstantiatorStrategy(new StdInstantiatorStrategy());
Log.set(LEVEL_DEBUG);
}
private <T> T deserialize(byte[] bytes) {
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
Input input = new Input(byteArrayInputStream);
input.close();
return (T) kryo.readClassAndObject(input);
}
private byte[] serialize(Object obj) {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
Output output = new Output(byteArrayOutputStream);
kryo.writeClassAndObject(output, obj);
output.close();
return byteArrayOutputStream.toByteArray();
}Environment:
- OS: Windows 10
- JDK Version: 8
- Kryo Version: 5.1.0
Additional context
Add any other context about the problem here.