Swagger-UI将表单参数发送为未爆炸

如何解决Swagger-UI将表单参数发送为未爆炸

我不明白为什么swagger-ui将“ columns”和“ documentIds”参数作为逗号分隔的值发送，而不是默认的爆炸式key = val1＆key = val2形式发送。

这是定义：

        RouterOperation(
            path = "$BASE_PATH/loss/excel",beanClass = ExcelExportHandler::class,beanMethod = "export",method = [POST],operation = Operation(
                operationId = "excelExport",security = [
                    SecurityRequirement(name = "Authorization")
                ],requestBody = RequestBody(
                    required = true,description = "form data",content = [
                        Content(
                            mediaType = APPLICATION_FORM_URLENCODED_VALUE,schema = Schema(implementation = ExcelExportRequest::class),encoding = [
                                Encoding(name = "columns",explode = true),Encoding(name = "documentIds",explode = true)
                            ]
                        )
                    ],),responses = [
                    ApiResponse(
                        content = [
                            Content(
                                mediaType = APPLICATION_OCTET_STREAM_VALUE
                            )
                        ]
                    ),ApiResponse(
                        responseCode = "200"
                    )
                ]
            )
        )

ExcelExportRequest：

internal class ExcelExportRequest {
    @Schema(name = "columns",required = true)
    var columns: List<String>? = null

    @Schema(name = "documentIds",required = true)
    var documentIds: List<String>? = null
}

使用swagger-2.1.2（OpenAPI v3）。