kotlin - 通过POJO伪装QueryMap的用法

Question

我在FEIGN-README中发现可以执行以下操作:

interface MarketDataRestClient {
    @RequestLine("GET /api/v1/depth")
    fun getOrderBook(@QueryMap orderBookQuery: OrderBookQuery) : OrderBook
}

OrderBookQuery:

data class OrderBookQuery(val symbol: String, val limit: Int? = 100)

Feign应该生成查询参数: /api/v1/depth?symbol={symbol}&limit={limit}
不幸的是，我得到的只是:

Exception in thread "main" java.lang.IllegalStateException: QueryMap parameter must be a Map: class OrderBookQuery
at feign.Util.checkState(Util.java:128)
at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:126)
at feign.Contract$BaseContract.parseAndValidatateMetadata(Contract.java:64)
at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:146)
at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:53)
at feign.Feign$Builder.target(Feign.java:198)
at feign.Feign$Builder.target(Feign.java:194)

Answer 1

此功能将在9.7中可用。撰写本文时，当前的发行版本是9.6。如果您不想等待，请克隆存储库并运行构建项目。