Springboot API 返回空响应。

huangapple
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英文:

Springboot API returns null response

问题

This API works fine; I can see it hits the server and returns 200. But the response captured in the client code is null. I have checked the response via postman and I can see the status code. Not Sure why the client is not able to decode the response

API interface

Implementation

  1. @Test
  2. fun test() {
  3.     try {
  4.         val response = client.submit(request)
  5.         if (response.statusCodeValue == 200) {
  6.             logger.info("Success")
  7.             return
  8.         } else {
  9.             throw Exception("Internal Server Error")
  10.         }
  11.     } catch (e: Exception) {
  12.         throw Exception("Exception occurred while calling the submit API", e)
  13.     }
  14. }
英文:

This API works fine; I can see it hits the server and returns 200. But the response captured in the client code is null. I have checked the response via postman and I can see the status code. Not Sure why client is not able to decode the response

  1. @Bean
  2.         fun buildClient(
  3.             objectMapper: ObjectMapper,
  4.             @Value("${cbase-uri}") url: String
  5.         ): Client {
  6.             return FeignApiBuilder.builder(Client::class.java, url) { it }
  7.                 .build()
  8.         }

API interface

  1. @Headers(
  2.     "Accept: ${MimeTypeUtils.APPLICATION_JSON_VALUE}",
  3.     "Content-Type: ${MimeTypeUtils.APPLICATION_JSON_VALUE}"
  4. )
  5. interface Client {
  6.     @RequestLine("POST /v1/test")
  7.     fun submit(
  8.         request: body
  9.     ): ResponseEntity<Unit>
  10. }

Implementation

  1. override fun test(request: body) {
  2.         try {
  3.             val response = client.submit(request)
  4.             if (response.statusCodeValue == 200) {
  5.                 logger.info("Success")
  6.                 return
  7.             } else {
  8.                 throw Exception("Internal Server Error")
  9.             }
  10.         } catch (e: Exception) {
  11.             throw Exception("Exception occurred while calling submit api", e)
  12.         }
  13.     }

答案1

得分: 1

问题似乎是由API接口方法的返回类型引起的。您正在返回"ResponseEntity<Unit>"，您可以将返回类型更改为预期的类型，然后检查是否解决了问题。

英文:

Looks like the issue is due to return type of API interface method. You are returning "ResponseEntity<Unit>", can you change the return type to the expected type and check if that fixes the issue

huangapple
  • 本文由 发表于 2023年4月4日 10:47:21
  • 转载请务必保留本文链接：https://go.coder-hub.com/75925147.html
  • java
  • kotlin
  • rest
  • spring-boot
  • web-services
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