集成测试中的 InvalidDefinitionException 页面

Question

我有一个返回Page<MyDto>的端点。 一切正常，但在集成测试中我收到：

Type definition error: [simple type, class org.springframework.data.domain.Page]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `org.springframework.data.domain.Page` (no Creators, like default constructor, exist): abstract types either need to be mapped to concrete types, have custom deserializer, or contain additional type information
 at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 1]
feign.codec.DecodeException: Type definition error: [simple type, class org.springframework.data.domain.Page]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `org.springframework.data.domain.Page` (no Creators, like default constructor, exist): abstract types either need to be mapped to concrete types, have custom deserializer, or contain additional type information
 at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 1]

我看到了为PageImpl添加包装器的解决方案，但我不想创建一个包装器只是为了能够测试代码。 还有其他简单的解决方案吗？

Answer 1

将以下配置添加到您的项目中：

@Configuration
public class FeignDecodeConfiguration {

    @Bean
    public Module pageJacksonModule() {
        return new PageJacksonModule();
    }
}

有关更多详细信息，请参阅https://github.com/spring-cloud/spring-cloud-openfeign/issues/205 。