CODEWITHSUNDEEP
spring-mvcjava-8jacksonjackson-databind
javagc
javagc

Reputation: 876

Jackson JsonSerializer

I have simple serializer with Jaskcon

public class NullSerializer extends JsonSerializer<Object> {

    public void serialize(Object value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {
        jgen.writeString("");
    }
}

After Compiling this code Java throws Error

Error:java: java.lang.StackOverflowError

I am using this dependency

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.5.1</version>
</dependency>

Any ideas ?

Upvotes: 0

Views: 1102

Answers (1)

Alex Pakka
Alex Pakka

Reputation: 9706

Works perfectly well for me:

public class Main {
  static class NullSerializer extends JsonSerializer<Object> {

    public void serialize(Object value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {
        jgen.writeString("");
    }
  }

  public static void main(String[] args) throws Exception {
    ObjectMapper m = new ObjectMapper();
    SimpleModule module = new SimpleModule();
    module.addSerializer(Object.class, new NullSerializer());
    m.registerModule(module);
    System.out.println(m.writeValueAsString(
        Arrays.asList(true, 1, "String", new HashMap())
    )); //prints "", while without registerModule - [true,1,"String",{}]
  }
}

I would look somewhere else.

For one, check your Xss for Maven. Should be at least -Xss256k, maybe you will need more, or even better, leave it default at 1MB, because compiler uses stack differently than Java and sometimes puts structures on the stack.

I hope you are not using GWT, because if your code got exposed to GWT compiler, it would be a typical response in this situation.

And the least likely event would be that you found a genuine bug in the compiler.

Try using --debug option with Maven, maybe it will show more info.

Upvotes: 1

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