[英]Feign Client: DecodeException: Error while extracting response
我在我的微服务架构中使用 Open Feign 和 Hateos。 当我使用 Feign 客户端获取内容时,出现以下错误:
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is feign.codec.DecodeException: Error while extracting response for type [java.util.List<com.nyota.nyotaplatform.model.asset.Product>] and content type [application/json;charset=UTF-8]; nested exception is org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize instance of `java.time.LocalDateTime` out of START_ARRAY token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.time.LocalDateTime` out of START_ARRAY token
at [Source: (PushbackInputStream); line: 1, column: 1582] (through reference chain: java.util.ArrayList[1]->com.nyota.nyotaplatform.model.asset.Product["vendor"]->com.nyota.nyotaplatform.model.asset.Vendor["kyc"]->java.util.ArrayList[0]->com.nyota.nyotaplatform.model.fsp.Kyc["document"]->com.nyota.nyotaplatform.model.fsp.Document["uploadDateTime"])] with root cause
com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.time.LocalDateTime` out of START_ARRAY token
at [Source: (PushbackInputStream); line: 1, column: 1582] (through reference chain: java.util.ArrayList[1]->com.nyota.nyotaplatform.model.asset.Product["vendor"]->com.nyota.nyotaplatform.model.asset.Vendor["kyc"]->java.util.ArrayList[0]->com.nyota.nyotaplatform.model.fsp.Kyc["document"]->com.nyota.nyotaplatform.model.fsp.Document["uploadDateTime"])
以下是我的假客户:
@FeignClient(name="asset-market")
public interface AssetMarketClient {
@RequestMapping(path = "/product/filterProduct", method = RequestMethod.POST)
Page<Product> getfilterProduct(@RequestBody ProductFilter filter);
@RequestMapping(path = "/product/getProducts", method = RequestMethod.GET)
List<Product> getProducts();
}
下面我提供 Feign 客户端配置:
@Bean
public ClientCredentialsResourceDetails clientCredentialsResourceDetails() {
ClientCredentialsResourceDetails resource = new ClientCredentialsResourceDetails();
resource.setAccessTokenUri(serverUrl);
resource.setClientId(clientId);
resource.setClientSecret(secret);
return resource;
}
@Bean
public RequestInterceptor oauth2FeignRequestInterceptor(){
return new OAuth2FeignRequestInterceptor(new DefaultOAuth2ClientContext(), clientCredentialsResourceDetails());
}
@Bean
public RestTemplate oAuthRestTemplate() {
DefaultOAuth2ClientContext clientContext = new DefaultOAuth2ClientContext();
OAuth2RestTemplate restTemplate = new OAuth2RestTemplate(clientCredentialsResourceDetails(), clientContext);
return restTemplate;
}
@Bean
public RequestContextListener requestContextListener() {
return new RequestContextListener();
}
谁能告诉我哪里出错了,或者我还需要配置什么来实现这一目标?
很抱歉发布这个答案晚了。 在玩杂耍之后,我发现feign client
工作得很好。 主要问题在于解析收到的 JSON 对象。 当我详细检查日志时。
Cannot deserialize instance of `java.time.LocalDateTime` out of START_ARRAY token
它包含一个Jackson
无法解析的实体,所以我在我的文档类中使用了以下一段代码。
@JsonSerialize(using = LocalTimeSerializer.class)
@JsonDeserialize(using = LocalTimeDeserializer.class)
private LocalTime sendOn;
那解决了我的问题。 希望它也能帮助其他人......!
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