sdk use grails 5.1.7
grails create-app org.grails.demo.grails-mongo-date-demo --profile rest-apidependencies {
...
implementation 'org.grails.plugins:mongodb'
...
}grails create-controller org.grails.demo.Postpackage org.grails.demo
import java.time.LocalDate
import java.time.ZonedDateTime
class Post {
String title
LocalDate day
ZonedDateTime createdDate
static constraints = {
}
}package org.grails.demo
import grails.rest.*
import grails.converters.*
class PostController {
static responseFormats = ['json', 'xml']
def index() {
respond Post.list()
}
def save(Post post) {
post.save()
respond post
}
}- Add post
➜ ~ http :8080/post title=Abc day=2020-10-01 createdDate=2020-10-01T10:10:00+0800
HTTP/1.1 200
Connection: keep-alive
Content-Language: en-CN
Content-Type: application/json;charset=UTF-8
Date: Tue, 19 Jul 2022 13:54:08 GMT
Keep-Alive: timeout=60
Transfer-Encoding: chunked
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers
{
"createdDate": "2020-10-01T10:10:00+08:00",
"day": "2020-10-01",
"id": 1,
"title": "Abc"
}- Get posts
➜ ~ http :8080/post
HTTP/1.1 500
Connection: close
Content-Language: en-CN
Content-Type: application/json;charset=UTF-8
Date: Tue, 19 Jul 2022 13:54:20 GMT
Transfer-Encoding: chunked
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers
{
"error": 500,
"message": "Internal server error"
}- Errors
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'java.lang.String' to required type 'java.time.ZonedDateTime' for property 'createdDate'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String' to required type 'java.time.ZonedDateTime' for property 'createdDate': no matching editors or conversion strategy found
at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:595)
at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:609)
at org.springframework.beans.AbstractNestablePropertyAccessor.processLocalProperty(AbstractNestablePropertyAccessor.java:458)
at org.springframework.beans.AbstractNestablePropertyAccessor.setPropertyValue(AbstractNestablePropertyAccessor.java:278)
at org.springframework.beans.AbstractNestablePropertyAccessor.setPropertyValue(AbstractNestablePropertyAccessor.java:246)
at org.grails.datastore.mapping.engine.BeanEntityAccess.setProperty(BeanEntityAccess.java:88)
at org.grails.datastore.mapping.engine.NativeEntryEntityPersister$NativeEntryModifyingEntityAccess.setProperty(NativeEntryEntityPersister.java:1650)- Add
MappingContextBeanPostProcessorinsrc/main/groovy
class MappingContextBeanPostProcessor implements BeanPostProcessor, BeanFactoryAware {
private BeanFactory beanFactory
@Override
Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (beanName == 'mongoMappingContext') {
def mappingContext = this.beanFactory.getBean(beanName, MongoMappingContext)
mappingContext.addTypeConverter(new Converter<String, LocalDate>() {
@Override
LocalDate convert(String source) {
return LocalDate.parse(source, DateTimeFormatter.ofPattern("yyyy-MM-dd"))
}
})
mappingContext.addTypeConverter(new Converter<String, ZonedDateTime>() {
@Override
ZonedDateTime convert(String source) {
return ZonedDateTime.parse(source, DateTimeFormatter.ISO_OFFSET_DATE_TIME)
}
})
}
}
@Override
void setBeanFactory(BeanFactory beanFactory) throws BeansException {
this.beanFactory = beanFactory
}
}- Define bean in
grails-app/conf/spring/resources.groovy
// Place your Spring DSL code here
beans = {
mappingContextBeanPostProcessor(MappingContextBeanPostProcessor)
}- Check it again
➜ ~ http :8080/post
HTTP/1.1 200
Connection: keep-alive
Content-Language: en-CN
Content-Type: application/json;charset=UTF-8
Date: Tue, 19 Jul 2022 14:07:11 GMT
Keep-Alive: timeout=60
Transfer-Encoding: chunked
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers
[
{
"createdDate": "2020-10-01T10:10:00+08:00",
"day": "2020-10-01",
"id": 1,
"title": "Abc"
}
]In gorm-mogodb, there are some converters for Java 8 time types missing in MongoMappingContext, we can add these converters to fix the issue.
private void initialize(Class[] classes) {
...
converterRegistry.addConverter(new Converter<String, LocalDate>() {
@Override
public LocalDate convert(String source) {
return LocalDate.parse(source, DateTimeFormatter.ofPattern("yyyy-MM-dd"));
}
});
converterRegistry.addConverter(new Converter<String, ZonedDateTime>() {
@Override
public ZonedDateTime convert(String source) {
return ZonedDateTime.parse(source, DateTimeFormatter.ISO_OFFSET_DATE_TIME);
}
});
...
}
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