Date serialization issue while upgrading from Wildfly 11 to Wildfly 15

Question

We have recently migrated from Wildfly 11 to Wildfly 15 and from Java 8 to Java 11 and noticed a change in how Jackson serializes Date objects. We use Jackson v2.9.8 for object serialization and Spring v5.0.9.

Prior to our upgrade, a date object would be serialized in an ISO format e.g. "2019-11-12" but after the upgrade, the date fields started to appear as Timestamps e.g. "1573516800000'. Has anyone else faced this issue before? Is this something that can be configured in standalone.xml?

Wildfly 11 Example

Wildfly 15 Example

The field is configured as DATE in MySQL

Example Entity

public class Entity implements java.io.Serializable {

  @Id
  @Column(name = "id")
  private Integer id;

  @Column(name = "value_date")
  private java.sql.Date valueDate;

  public java.sql.Date getValueDate() {
    return valueDate;
  }

  public void setValueDate(java.sql.Date valueDate) {
    this.valueDate = valueDate;
  }
}

EDIT:

We have tried changing the java.sql.Date to java.util.Date and that has not worked

Did you try annoating variable with a required format like @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm a z") — Deˣ, Jun 10 '19 at 14:59

score 4 · Accepted Answer · answered Jun 10 '19 at 15:02

4

Although I cannot be sure about your current setup/config, if you configure your ObjectMapper, you will probably get the expected behavior:

@Bean
@Primary
public ObjectMapper objectMapper(Jackson2ObjectMapperBuilder builder) {
    ObjectMapper objectMapper = builder.build();
    objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
    return objectMapper;
}

answered Jun 10 '19 at 15:02

Sofo Gial

697
1
9
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Thank you that worked like a charm! (with a few mods as we are not using Spring Boot) – George Artemiou Jun 10 '19 at 21:37
1

Thanks George! If you could comment on the tweaks you did, I will update my answer to also include those, for future readers. – Sofo Gial Jun 11 '19 at 07:11

score 3 · Answer 2 · answered Jun 10 '19 at 14:01

3

I don't know why it is behaving that way but I would change the type of the field to java.util.Date and then use the @Temporal annotation.

This annotation must be specified for persistent fields or properties of type java.util.Date and java.util.Calendar. It may only be specified for fields or properties of these types.

According to the documentation:

Temporal data can have DATE, TIME, or TIMESTAMP precision (ie the actual date, only the time, or both). Use the @Temporal annotation to fine tune that.

Your Rest library will then handle conversion between Java Date and ISO. How to configure that depends on the JSON serializer you are using, it is the default format for Date in Jackson

answered Jun 10 '19 at 14:01

Japheth Ongeri - inkalimeva

4,909
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Thank you for your reply, we have tried changing the date type to `java.util.Date` and that didn't resolve the issue for us which is strange. We've also just tried to add the @Temporal annotation which again had no effect. – George Artemiou Jun 10 '19 at 14:14
Ok... try adding this annotation above the field in case wildfly is using Jackson `@JsonFormat(shape=JsonFormat.Shape.STRING, pattern="yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", timezone="GMT")` – Japheth Ongeri - inkalimeva Jun 10 '19 at 14:59

score 2 · Answer 3 · answered Jun 11 '19 at 13:03

We had this issue after upgrading our Wildfly application server from 11 to 15, and also our Java from 8 to 11.

Based on @Sofo Gial's accepted answer, the following approach worked for us using Spring 5.0.9.RELEASE / JDK 11 / Wildfly 15.

1) Create a CustomObjectMapper.java:

package com.mobizio.rest.spring;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

public class CustomObjectMapper extends ObjectMapper {

    public CustomObjectMapper() {
        super();
        configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
    }

}

2) In your context beans configuration XML file add a <mvc:message-converters> entry between the <mvc:annotation-driven> tags, and create a bean of the CustomObjectMapper:

<mvc:annotation-driven>
...
<mvc:message-converters>
    <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="objectMapper" ref="jacksonObjectMapper" />
    </bean>
</mvc:message-converters>
...
</mvc:annotation-driven>

<bean id="jacksonObjectMapper" class="com.mobizio.rest.spring.CustomObjectMapper" />

Date serialization issue while upgrading from Wildfly 11 to Wildfly 15

3 Answers3