Hi everyone!
I need to use serialization with type information. Serialization works
fine, but deserialization fails with:
om.fasterxml.jackson.databind.exc.MismatchedInputException: Unexpected
token (VALUE_NUMBER_INT), expected START_ARRAY: need JSON Array to contain
As.WRAPPER_ARRAY type information for class java.lang.Long
at [Source:
(String)"["deserialization.fail.example.UserPair",{"user1":["deserialization.fail.example.User",{"id":["java.lang.Long",42],"login":"aaa"}],"user2":42}]";
line: 1, column: 140] (through reference chain:
deserialization.fail.example.UserPair["user2"])
You can see my code in my test repository:
https://github.com/alex-t0/deserialization-fail-example.git.
Please see this classes:
1. User -
https://github.com/alex-t0/deserialization-fail-example/blob/master/src/main/java/deserialization/fail/example/User.java
2. UserPair -
https://github.com/alex-t0/deserialization-fail-example/blob/master/src/main/java/deserialization/fail/example/UserPair.java
3. MapperUtil -
https://github.com/alex-t0/deserialization-fail-example/blob/master/src/main/java/deserialization/fail/example/MapperUtil.java
4. UserSerializationTest -
https://github.com/alex-t0/deserialization-fail-example/blob/master/src/test/java/deserialization/fail/example/UserSerializationTest.java
UserPair - is simple class with 2 refs to user. In test I create one user,
and set it to both references in UserPair. Then serialize UserPair, it
returns String that seems good:
[
"deserialization.fail.example.UserPair",
{
"user1": [
"deserialization.fail.example.User",
{
"id": [
"java.lang.Long",
42
],
"login": "aaa"
}
],
"user2": 42
}
]
But when deserialing i get exception thar I write before. And it occurs
when reding user2 by id.
It is my improper use or bug? Is there workaround or proper solution?
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