Allow the formatting of java.time.LocalDate etc to be configured via the environment

[sixrandanes]

Hello,

1/ Description

I try to serialize a LocalDate (java 8) from my JPA entity into a specific pattern (dd/MM/yyyy).
Everything works fine if I put the annotation @JsonFormat(pattern="dd/MM/yyyy") on each date of my JPA entity.
That solution is too heavy because I don't want to put this annotation on each date of all my jpa entites, So, I was looking for a better solution by applying some global configuration with spring boot.

I found the properties spring.jackson.date-format and spring.jackson.locale but I can't get them to work. I don't know if it's really a bug or I miss something in my project / configuration.

I am using Java8, spring-boot (1.2.6.RELEASE) with spring data jpa 1.9, and I have this in my classpath : 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.6.3'

To be precise that I am only working with spring-data-jpa and not spring-data-rest.

2/ Unit testing

I made a unit test and I have that output :
(I use spring.jackson.date-format property)

Without the property in my yaml file, I've got this :

java.lang.AssertionError: JSON path$[0].dateCreation
Expected: "16/10/2015"
     but: was **<[2015,10,16]>**

With the property but without specifying any format (blank), I've got this :

java.lang.AssertionError: JSON path$[0].dateCreation
Expected: "16/10/2015"
     but: was **"2015-10-16"**

With the property and If i specify any format (dd/MM/yyyy or dd-mm-yyyy, or even a class) , I've got the same:

java.lang.AssertionError: JSON path$[0].dateCreation
Expected: "16/10/2015"
     but: was **"2015-10-16"**

I've got the same result with the property : spring.jackson.locale

3/ build.gradle

    apply plugin: 'spring-boot'
    apply plugin: 'java'

    springBoot {
        mainClass = "com.seriajack.Application"
    }

    repositories {
        mavenCentral()
    }

    group = 'test'
    version = "1.0"

    jar {
        baseName = 'seriajack'
        version= '1.0'
    }

    compileJava.options.encoding = 'UTF-8'
    sourceCompatibility = 1.8
    targetCompatibility = 1.8

buildscript {
    repositories {
                mavenCentral()
        }

    dependencies {
        classpath(group: 'org.springframework.boot', name: 'spring-boot-gradle-plugin', version: '1.2.6.RELEASE')
    }
}

    dependencies {
        compile("com.google.guava:guava:18.0")
        compile("org.jolokia:jolokia-core:1.2.2")
        compile('com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.6.3')
        compile("org.springframework.boot:spring-boot-starter-web")
        compile("org.springframework.boot:spring-boot-starter-tomcat")
        compile("org.springframework.boot:spring-boot-starter-data-jpa")
        compile("org.springframework.data:spring-data-jpa:1.9.0.RELEASE")
        compile("com.h2database:h2")
        compile("org.flywaydb:flyway-core:3.2.1")
        testCompile("org.springframework.boot:spring-boot-starter-test")        
        testCompile 'junit:junit:4.12'
        testCompile 'org.easytesting:fest-assert:1.4'
        testCompile 'org.mockito:mockito-all:1.10.19'
        testCompile 'com.jayway.jsonpath:json-path:2.0.0'
    }

4/ application.yml

spring:
 profiles:
  active: test
 jpa:
  show-sql: false
  hibernate:
   ddl: auto  
 application:
  name: seriajack
 boot:
  admin:
   url: http://localhost:8080
   client:
    serviceUrl: http://localhost:8080
 jackson: 
  date-format: dd/MM/yyyy

management:
 port: 8080
 address: 127.0.0.1

#SERVER
server:
 port: 8080
 session-timeout: 300
 tomcat.uri-encoding: UTF-8

---
#PROFILE LOCAL
spring:
 profiles: local
 datasource:
  initialize: false
datasource:
 seriajack:
  driverClassName: oracle.jdbc.driver.OracleDriver
  url: 
  username:
  password:
--- 
#PROFILE DEV
spring:
 profiles: dev
 datasource:
  initialize: false
datasource:
 seriajack:
  driverClassName: oracle.jdbc.driver.OracleDriver
  url: 
  username:
  password:
---  
#PROFILE TEST
spring:
 profiles: test
 datasource:
  initialize: false
  platform: h2
datasource:
 test:
  url: "jdbc:h2:mem:test;USER=SA;MODE=Oracle;DB_CLOSE_ON_EXIT=TRUE;INIT=create schema if not exists SERIAJACK\\;"
  driverClassName: org.h2.Driver

5/ application.java

@SpringBootApplication
@EntityScan(basePackageClasses = { Application.class, Jsr310JpaConverters.class})
public class Application {

    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);
    }
}

6/ JPA entity

package com.seriajack.textereglementaire;

import java.time.LocalDate;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;

import com.fasterxml.jackson.annotation.JsonFormat;

@Entity
@Table(name = "T_TEXTE_REGLEMENTAIRE", schema = "SERIAJACK")
public class TexteReglementaire {

    private long id;
    private TexteType type;
    private String numero;
    private String intitule;
    private LocalDate dateCreation;
    @Lob
    private byte[] fichier;
    private String precision;
    private LocalDate dateCertification;
    private LocalDate dateParution;
    private String numeroJONC;
    private LocalDate dateAbrogation;
    private String reference;
    private String lienJuridoc;

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "SEQ_TTEXTEREG")
    @SequenceGenerator(name = "SEQ_TTEXTEREG", sequenceName = "SERIAJACK.SEQ_TTEXTEREG")
    @Column(name = "ID")
    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    @Column(name = "TYPE", nullable = false)
    @Enumerated(EnumType.STRING)
    public TexteType getType() {
        return type;
    }

    public void setType(TexteType type) {
        this.type = type;
    }

    @Column(name = "NUMERO", nullable = false)
    public String getNumero() {
        return numero;
    }

    public void setNumero(String numero) {
        this.numero = numero;
    }

    @Column(name = "INTITULE", nullable = false)
    public String getIntitule() {
        return intitule;
    }

    public void setIntitule(String intitule) {
        this.intitule = intitule;
    }

    @Column(name = "DATE_CREATION", nullable = false)
    public LocalDate getDateCreation() {
        return dateCreation;
    }

    public void setDateCreation(LocalDate dateCreation) {
        this.dateCreation = dateCreation;
    }

    @Column(name = "FICHIER", nullable = false)
    public byte[] getFichier() {
        return fichier;
    }

    public void setFichier(byte[] fichier) {
        this.fichier = fichier;
    }

    @Column(name = "PRECISION")
    public String getPrecision() {
        return precision;
    }

    public void setPrecision(String precision) {
        this.precision = precision;
    }

    @Column(name = "DATE_CERTIFICATION")
    public LocalDate getDateCertification() {
        return dateCertification;
    }

    public void setDateCertification(LocalDate dateCertification) {
        this.dateCertification = dateCertification;
    }

    @Column(name = "DATE_PARUTION")
    public LocalDate getDateParution() {
        return dateParution;
    }

    public void setDateParution(LocalDate dateParution) {
        this.dateParution = dateParution;
    }

    @Column(name = "NUMERO_JONC")
    public String getNumeroJONC() {
        return numeroJONC;
    }

    public void setNumeroJONC(String numeroJONC) {
        this.numeroJONC = numeroJONC;
    }

    @Column(name = "DATE_ABROGATION")
    public LocalDate getDateAbrogation() {
        return dateAbrogation;
    }

    public void setDateAbrogation(LocalDate dateAbrogation) {
        this.dateAbrogation = dateAbrogation;
    }

    @Column(name = "REFERENCE")
    public String getReference() {
        return reference;
    }

    public void setReference(String reference) {
        this.reference = reference;
    }

    @Column(name = "LIEN_JURIDOC")
    public String getLienJuridoc() {
        return lienJuridoc;
    }

    public void setLienJuridoc(String lienJuridoc) {
        this.lienJuridoc = lienJuridoc;
    }
}

7/ Controller

@Configuration
@RestController
@RequestMapping(value = "/api/texte", produces = "application/json;charset=UTF-8")
public class TexteReglementaireController {

    @Autowired
    TexteReglementaireService texteReglementaireService;

    @RequestMapping(value = "/list", method = RequestMethod.GET)
    public List<TexteReglementaire> findAllTexteReglementaire() {
        return texteReglementaireService.findAllTexteReglementaire();
    }
}

[sixrandanes]

Seem like the bean Jackson2ObjectMapperBuilder is not configured with my properties in yaml, because I have already a Jackson2ObjectMapperBuilder from spring-web...

@Bean
@ConditionalOnMissingBean(Jackson2ObjectMapperBuilder.class)
public Jackson2ObjectMapperBuilder jacksonObjectMapperBuilder() {

Am I right ?

[wilkinsona]

That code isn't from spring-web. @ConditionalOnMissingBean is only used in Spring Boot. Are you referring to JacksonAutoConfiguration.JacksonObjectMapperBuilderConfiguration? If so, then that builder is configured using your properties and then used to create the context's ObjectMapper.

Rather than copy and pasting snippets of code into an issue, can you please provide a project that we can git clone or a zip that we can download and build that reproduces the problem?

[sixrandanes]

Here is the link where you can find my project :

https://github.com/sixrandanes/seriajack

There is a failure test which describes the problem : TexteReglementaireControllerTestIT

Thank you in advance for your reply

[wilkinsona]

spring.jackson.date-format only affects the serialisation of java.util.Date instances. Jackson's JavaTimeModule automatically configures a number of serialisers, but it does so with default formatting which simply calls toString.

If you want to configure the formatting of java.time.* instances then you'll need to manually register the appropriate serialisers configured to use an appropriately configured formatter. For example:

    @Autowired
    private Jackson2ObjectMapperBuilder builder;

    @PostConstruct
    public void postConstruct() {
        this.builder.serializers(new LocalDateSerializer(new DateTimeFormatterBuilder()
                .appendPattern("dd/MM/yyyy").toFormatter()));
    }

[sixrandanes]

Thank you very much. It helps me !

[shakuzen]

+1 For being able to configure the new Date/Time formats via the environment.

[sixrandanes]

Hello,

I just realized that there is a new property :

spring.jackson.joda-date-time-format= 

Is that property have something to do with that issue ?

[snicoll]

No, that's the joda date format, not the Java8 date format.

[sixrandanes]

ok sorry, I red too fast :-)