question

Hello,

In this application I have followed the FFDC Spring Boot example.

Please find below the environment, Entity, FFDC API Class, and the error stack trace:

I get the error when I try to call addCustomer method from FFDC Api class only (getCustomer works fine).

Please let me know if you need any other details.

====== Environment ======

Java 8

Spring Boot 2.3.3

Spring web

Spring Security Oauth2 2.1.0

httpClient 4.5.9

====== Entity =======

@AllArgsConstructor
 @NoArgsConstructor
 @Data
 @Builder
 public class FFDCCustomer {
     //private String id;
     private String branch;
     private String country;
     private String legalName;
     private String shortName;
     private String externalId;
     private String customerStatus;
     private boolean specialLoan;
     private boolean restricted;
     private boolean majorUnderwriter;
     private LegalAddress legalAddress;
 }

====== FFDC API =======

@Component
 public class FfdcApi {
 
     @Value("${ffdcapi.baseUrl}")
     private String baseUrl;
 
     @Autowired
     private OAuth2RestTemplate restTemplate;
 
     @Autowired
     private OAuth2ClientContext oAuth2ClientContext;

public FFDCCustomer getCustomer(String id) {
     UriComponents uriBuilder = UriComponentsBuilder
             .fromUriString(baseUrl + "/corporate/lending/customer/v1/customers/" + id)
             .build();
     ResponseEntity<FFDCCustomer> response = restTemplate.exchange(uriBuilder.toUri(), HttpMethod.GET, null, FFDCCustomer.class);
     return response.getBody();
 }
 
 public FFDCCustomer addCustomer(FFDCCustomer ffdcCustomer) {
     UriComponents uriBuilder = UriComponentsBuilder
             .fromUriString(baseUrl + "/corporate/lending/customer/v1/customers")
             .build();
     ffdcCustomer.setExternalId("92933");
     ObjectMapper mapper = new ObjectMapper();
     ResponseEntity<FFDCCustomer> response = null;
     try {
         HttpHeaders headers = new HttpHeaders();
         headers.setBearerAuth(oAuth2ClientContext.getAccessToken().getValue());
         headers.setContentType(MediaType.APPLICATION_JSON);
         headers.setAccept(Arrays.asList(MediaType.ALL));
         headers.set("Host", baseUrl);
         String jsonCustomer = mapper.writeValueAsString(ffdcCustomer);
         HttpEntity<String> requestEntity = new HttpEntity<>(jsonCustomer, headers);
         response = restTemplate.postForEntity(uriBuilder.toUri(),requestEntity, FFDCCustomer.class);
     } catch (JsonProcessingException e) {
         e.printStackTrace();
     } catch (Exception e) {
         e.printStackTrace();
     }
 
     return response == null ? new FFDCCustomer() : ffdcCustomer;
   }

}

getCustomer method works without any problem.

addCustomer method throws the below error.

====== Error stack trace =======

org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://api.fusionfabric.cloud/corporate/lending/customer/v1/customers": Connection reset; nested exception is javax.net.ssl.SSLException: Connection reset

at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:748)

at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:714)

at org.springframework.web.client.RestTemplate.postForEntity(RestTemplate.java:467)

..

..

..

Caused by: java.net.SocketException: Connection reset

at java.base/java.net.SocketInputStream.read(SocketInputStream.java:186)

at java.base/java.net.SocketInputStream.read(SocketInputStream.java:140)

at java.base/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:467)

at java.base/sun.security.ssl.SSLSocketInputRecord.readHeader(SSLSocketInputRecord.java:461)

at java.base/sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:70)

at java.base/sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1145)

at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:832)

Thank you in advance for your help.