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TPToss payments 개발자 커뮤니티
Created by 조갱 on 5/19/2023 in #❓┃연동개발-문의
XPayClient 응답값 문의
안녕하세요, 토스페이 알파환경 연동중에 문의드립니다. 구매 confirm 요청을 보내고, Response를 받아오는 과정에서 Exception이 발생합니다. XPayClient의 Response를 수집하는 코드는 아래와 같습니다. 
 kotlin
    private fun XPayClient.toResponseMap(): Map<String, String> {
        val result = HashMap<String, String>()
        log.info("====== [DEBUG] : ResponseNameCount: ${this.ResponseNameCount()}")
        log.info("====== [DEBUG] : ResponseCount: ${this.ResponseCount()}")

        for (i in 0 until this.ResponseNameCount()) {
            log.info("===== [DEBUG] this.Responsename(i) = ${this.ResponseName(i)} ===== ")
            log.info("===== [DEBUG] this.ResponseCount() - 1 = ${this.ResponseCount() - 1} =====")
            result[this.ResponseName(i)] = this.Response(this.ResponseName(i), this.ResponseCount() - 1)
            log.info("===== [DEBUG] $i 번까지 수행 완료")
        }
        return result
    }
 kotlin
    private fun XPayClient.toResponseMap(): Map<String, String> {
        val result = HashMap<String, String>()
        log.info("====== [DEBUG] : ResponseNameCount: ${this.ResponseNameCount()}")
        log.info("====== [DEBUG] : ResponseCount: ${this.ResponseCount()}")

        for (i in 0 until this.ResponseNameCount()) {
            log.info("===== [DEBUG] this.Responsename(i) = ${this.ResponseName(i)} ===== ")
            log.info("===== [DEBUG] this.ResponseCount() - 1 = ${this.ResponseCount() - 1} =====")
            result[this.ResponseName(i)] = this.Response(this.ResponseName(i), this.ResponseCount() - 1)
            log.info("===== [DEBUG] $i 번까지 수행 완료")
        }
        return result
    }
그리고, 위 코드에서 출력되는 로그는 아래와 같습니다. 
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] 38 번까지 수행 완료
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.Responsename(i) = LGD_BUYERID ===== 
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.ResponseCount() - 1 = 0 =====
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] 39 번까지 수행 완료
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.Responsename(i) = LGD_ORDERS_METADATA ===== 
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.ResponseCount() - 1 = 0 =====
20:47:14.186 [NioDispatcher-2 @coroutine#1] ERROR c.n.p.c.GlobalErrorWebExceptionHandler - Internal Error
java.lang.NullPointerException: this.Response(this.Respo…this.ResponseCount() - 1) must not be null
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] 38 번까지 수행 완료
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.Responsename(i) = LGD_BUYERID ===== 
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.ResponseCount() - 1 = 0 =====
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] 39 번까지 수행 완료
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.Responsename(i) = LGD_ORDERS_METADATA ===== 
20:47:14.136 [NioDispatcher-2 @coroutine#1] INFO  c.n.p.g.t.TossPaymentsClient - ===== [DEBUG] this.ResponseCount() - 1 = 0 =====
20:47:14.186 [NioDispatcher-2 @coroutine#1] ERROR c.n.p.c.GlobalErrorWebExceptionHandler - Internal Error
java.lang.NullPointerException: this.Response(this.Respo…this.ResponseCount() - 1) must not be null
즉, LGD_ORDERS_METADATA 이 ResponseName의 값이 없는것 같은데, 이유가 궁금합니다. (리얼(운영) 환경에서는 정상 동작하는데, 알파환경만 발생합니다..)
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