生成的 OpenAPI golang 客户端似乎无法正确处理日期？

Question

我正在开发一个提供事务列表的API。我是用Java/Kotlin-Spring编写的，但对于CLI，我更喜欢golang，所以我为它生成了一个golang客户端。API在Swagger UI中运行良好。

API科特林：

@GetMapping
fun listTransactions() : ResponseEntity<List<Transaction>> {
val transactions = ArrayList<Transaction>()
transactionRepository.findAll().mapTo(transactions) { fromEntity(it) }
return ResponseEntity.ok(transactions)
}

Kotlin对象：

data class Transaction(
val id: Long,
val transactionDate: Date, // Java SQL date
val postedDate: Date?, // Java SQL date
val amount: BigDecimal,
val category: Category,
val merchant: Merchant,
val merchantDescription: String?
)

生成的架构：

{
"openapi": "3.0.1",
"info": {
"title": "BFI Swagger Title",
"description": "BFI description",
"version": "0.1"
},
"servers": [{
"url": "http://localhost:8080",
"description": "Generated server url"
}],
"paths": {
"/transaction": {
"get": {
"tags": ["transaction-router"],
"operationId": "listTransactions",
"responses": {
"200": {
"description": "OK",
"content": {
"*/*": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Transaction"
}
}
}
}
}
}
},
"post": {
"tags": ["transaction-router"],
"operationId": "createTransaction",
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/CreateTransactionRequest"
}
}
},
"required": true
},
"responses": {
"200": {
"description": "OK",
"content": {
"*/*": {
"schema": {
"$ref": "#/components/schemas/Transaction"
}
}
}
}
}
}
},
"/hello": {
"get": {
"tags": ["category-router"],
"summary": "Hello there!",
"operationId": "hello",
"responses": {
"200": {
"description": "OK",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Category"
}
}
}
}
}
}
}
},
"components": {
"schemas": {
"CreateTransactionRequest": {
"type": "object",
"properties": {
"transactionDate": {
"type": "string",
"format": "date-time"
},
"postedDate": {
"type": "string",
"format": "date-time"
},
"amount": {
"type": "number"
},
"categoryId": {
"type": "integer",
"format": "int64"
},
"merchantId": {
"type": "integer",
"format": "int64"
},
"merchantDescription": {
"type": "string"
}
}
},
"Category": {
"type": "object",
"properties": {
"id": {
"type": "integer",
"format": "int64"
},
"name": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"Merchant": {
"type": "object",
"properties": {
"id": {
"type": "integer",
"format": "int64"
},
"name": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"Transaction": {
"type": "object",
"properties": {
"id": {
"type": "integer",
"format": "int64"
},
"transactionDate": {
"type": "string",
"format": "date-time"
},
"postedDate": {
"type": "string",
"format": "date-time"
},
"amount": {
"type": "number"
},
"category": {
"$ref": "#/components/schemas/Category"
},
"merchant": {
"$ref": "#/components/schemas/Merchant"
},
"merchantDescription": {
"type": "string"
}
}
}
}
}
}

Golang客户端对象：

type Transaction struct {
Id *int64 `json:"id,omitempty"`
TransactionDate *time.Time `json:"transactionDate,omitempty"`
PostedDate *time.Time `json:"postedDate,omitempty"`
Amount *float32 `json:"amount,omitempty"`
Category *Category `json:"category,omitempty"`
Merchant *Merchant `json:"merchant,omitempty"`
MerchantDescription *string `json:"merchantDescription,omitempty"`
}

所有这些似乎都足够正确。然而，当我使用OpenAPI客户端时，反序列化似乎无法正常工作：

Error when calling `TransactionRouterApi.ListTransactions``: parsing time ""2022-10-28"" as ""2006-01-02T15:04:05Z07:00"": cannot parse """ as "T"
Full HTTP response: &{200  200 HTTP/1.1 1 1 map[Content-Type:[application/json] Date:[Sat, 29 Oct 2022 04:03:31 GMT]] {[{"id":1,"transactionDate":"2022-10-28","postedDate":"2022-10-28","amount":0.00,"category":{"id":1,"name":"test","note":"test"},"merchant":{"id":1,"name":"test","note":"test"},"merchantDescription":null},{"id":2,"transactionDate":"2022-10-28","postedDate":"2022-10-28","amount":0.00,"category":{"id":1,"name":"test","note":"test"},"merchant":{"id":1,"name":"test","note":"test"},"merchantDescription":null},{"id":3,"transactionDate":"2022-10-28","postedDate":"2022-10-28","amount":0.00,"category":{"id":1,"name":"test","note":"test"},"merchant":{"id":1,"name":"test","note":"test"},"merchantDescription":null}]} -1 [chunked] false false map[] 0x140001daf00 <nil>}
Response from `TransactionRouterApi.ListTransactions`: [{0x140000aa218 0001-01-01 00:00:00 +0000 UTC <nil> <nil> <nil> <nil> <nil>}]

我是否做了一些错误的事情，导致反序列化失败？或者这是一个客户端错误(看起来很可疑，但谁知道呢(。

我已经查看了我使用的生成参数和端点上可用的模式，它们看起来都是正确的。

执行的脚本：openapi-generator-cli generate -g go -i http://localhost:8080/v3/api-docs

Answer 1

两个选项：

1. 创建一个自定义类型并实现日期字段的Unmarshaler接口
2. 从API返回有效的RFC 3339日期/时间