Fix Rest API: no wrapper needed

src/main/kotlin/mobildata/ApiApplication.kt

 package mobildata
 
+import com.fasterxml.jackson.annotation.JsonRootName
+import com.fasterxml.jackson.core.JsonParseException
+import com.fasterxml.jackson.core.JsonParser
+import com.fasterxml.jackson.databind.*
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module
 import mobildata.jwt.ExposeResponseInterceptor
 import org.springframework.boot.SpringApplication
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.cache.annotation.EnableCaching
 import org.springframework.context.annotation.Bean
@@ -9,10 +15,15 @@ import org.springframework.context.annotation.Configuration
 import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean
 import org.springframework.validation.beanvalidation.MethodValidationPostProcessor
 import org.springframework.web.servlet.config.annotation.*
+import com.fasterxml.jackson.annotation.JsonInclude
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder
+
+
 
 
 @Configuration
 @EnableCaching
+@EnableAutoConfiguration
 @SpringBootApplication
 class ApiApplication : WebMvcConfigurer {
 
@@ -52,6 +63,19 @@ class ApiApplication : WebMvcConfigurer {
 
     @Bean
     fun validator() = LocalValidatorFactoryBean()
+
+
+    @Bean
+    fun objectMapperBuilder(): Jackson2ObjectMapperBuilder {
+        val builder = Jackson2ObjectMapperBuilder()
+        val mapper = ObjectMapper()
+        mapper.configure(SerializationFeature.WRAP_ROOT_VALUE, false)
+        mapper.configure(DeserializationFeature.UNWRAP_ROOT_VALUE, true)
+        mapper.registerModule(Jdk8Module())
+        builder.configure(mapper)
+        return builder
+    }
+
 }
 
 fun main(args: Array<String>) {

src/main/kotlin/mobildata/client/TagClient.kt

-package mobildata.client
-
-import feign.Headers
-import feign.RequestLine
-import mobildata.client.response.OutTag
-
-interface TagClient {
-    @RequestLine("GET /api/tags")
-    @Headers("Content-Type: application/json")
-    fun tags(): OutTag
-}

src/main/kotlin/mobildata/client/response/OutTag.kt

-package mobildata.client.response
-
-data class OutTag(var tags: List<String> = listOf())

src/main/kotlin/mobildata/model/inout/Register.kt

@@ -5,6 +5,8 @@ import javax.validation.constraints.NotNull
 import javax.validation.constraints.Pattern
 import javax.validation.constraints.Size
 
+
+
 @JsonRootName("user")
 class Register {
     @NotNull(message = "can't be missing")

src/test/kotlin/mobildata/ApiApplicationTests.kt

@@ -4,7 +4,6 @@ import feign.Feign
 import feign.gson.GsonDecoder
 import feign.gson.GsonEncoder
 import mobildata.client.ProfileClient
-import mobildata.client.TagClient
 import mobildata.client.UserClient
 import mobildata.client.response.InLogin
 import mobildata.client.response.InRegister