grails - Grails 4:自定义域模型编码不适用于Grails 4

Question

我当前的当前问题是自grails 2.4.5 到grails 3.3.0以来创建的自定义对象编码器，而grails 4.0.0 上不起作用。 Grails 4默认情况下响应域模型，而不是我创建的自定义模型。

以下是我的代码。请查看，如果发现有问题，请告诉我，如果您能帮助我，我会很高兴。

ResponseSender.groovy

package com.problem.solve.common

import org.springframework.http.HttpStatus

trait ResponseSender {

 void sendResponse() {
 render status: HttpStatus.NO_CONTENT
 }

 void sendResponse(def responseData) {
 respond (responseData)
 }

 void sendResponse(HttpStatus status, def responseData) {
 response.status = status.value()
 respond (responseData)
 }
}

此 ResponseSender.groovy 特性在 Controller 上实现。

MarshallerInitializer.groovy

package com.problem.solve.marshaller

class MarshallerInitializer {

    CustomObjectMarshallers customObjectMarshallers

    void initialize() {
        customObjectMarshallers.register()
    }
}

bootstrap 初始化时，将调用此 MarshallerInitializer.groovy 。

package com.problem.solve.marshaller

class CustomObjectMarshallers {

    List marshallers = []

    void register() {
        marshallers.each {
            it.register()
        }
    }
}

此 CustomObjectMarshallers.groovy 将注册所有编码。

UserMarshaller.groovy

package com.problem.solve.marshaller.marshalls

import com.problem.solve.security.User
import grails.converters.JSON

class UserMarshaller {
    void register() {
        JSON.registerObjectMarshaller(User) { User user ->
            return [
                    id: user.id,
                    fullName: user.fullName,
                    username: user.username,
                    emailAddress: user.emailAddress,
                    roles: user.authorities.authority,
                    dateCreated: user.dateCreated,
                    lastUpdated: user.lastUpdated,
                    _entityType: 'User'
            ]
        }
    }

这个 UserMarshaller.groovy 是一个示例域模型，我想将其从域模型转换为json响应。

resources.groovy

import com.problem.solve.marshaller.CustomObjectMarshallers
import com.problem.solve.marshaller.MarshallerInitializer
import com.problem.solve.marshaller.marshalls.*

// Place your Spring DSL code here
beans = {
    customObjectMarshallers(CustomObjectMarshallers) {
        marshallers = [
                new UserMarshaller()
        ]
    }

    marshallerInitializer(MarshallerInitializer) {
        customObjectMarshallers = ref('customObjectMarshallers')
    }
}

此设置的问题不适用于grails 4，但此设置适用于grails 2.4.5和grails 3.3.0。

我真的需要你们的帮助。

非常感谢 :)

Answer 1

我通过创建DomainModelResponseDto作为响应域模型来解决此编码器问题。

例:

class UserResponseDto {
    String id
    String username
    String email

    UserResponseDto(User user) {
        id = user.id
        username = user.username
        email = user.email
    }
}