I´m new working with Spring Boot v2.3.0.RELEASE, Java 8, JUnit 5, and Swagger OAS 3, I try to test the integration of the API Controller (generated with swagger-codegen) with my service, this controller contains a unique method that allows upload file a gallery, but when I run the test this throws an exception at the moment that converts the file by the mapper.
I don´t understand why this is happening, I´m generating wrong the mock test of MultipartFile?
How to solve this problem?
Class GaleriaAPIControllerTest
package com.navastud.apibackendcuentos.swagger.api;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.navastud.apibackendcuentos.builder.ArchivoBuilder;
import com.navastud.apibackendcuentos.builder.GaleriaBuilder;
import com.navastud.apibackendcuentos.builder.MultipartFileBuilder;
import com.navastud.apibackendcuentos.service.GaleriaService;
import com.navastud.apibackendcuentos.swagger.model.ArchivoDTO;
import com.navastud.apibackendcuentos.swagger.model.GaleriaDTO;
import com.navastud.apibackendcuentos.swagger.model.TipoGaleriaEnum;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.http.MediaType;
import org.springframework.mock.web.MockMultipartFile;
import org.springframework.web.multipart.MultipartFile;
import java.util.Collections;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.BDDMockito.given;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
class GaleriaApiControllerTest extends BaseControllerTest {
@MockBean
@Qualifier("GaleriaServiceImpl")
private GaleriaService galeriaServiceImpl;
@Autowired
private GaleriaBuilder galeriaBuilder;
@Autowired
private ArchivoBuilder archivoBuilder;
@Autowired
private MultipartFileBuilder multipartFileBuilder;
@BeforeEach
void setUp() {
MultipartFile multipartFile = multipartFileBuilder.create().build();
archivoBuilder = archivoBuilder.createWithId().multipartFile(multipartFile);
galeriaBuilder = galeriaBuilder.createWithId().tipo(TipoGaleriaEnum.GENERICA)
.archivos(Collections.singletonList(archivoBuilder.build()));
}
@Test
void createArchivoInGaleriaTest() throws Exception {
GaleriaDTO galeria = galeriaBuilder.buildDTO();
ArchivoDTO archivo = archivoBuilder.buildDTO();
given(galeriaServiceImpl.addArchivoInGaleria(anyLong(), anyLong(), any())).willReturn(archivo);
MockMultipartFile file = new MockMultipartFile("file", "prueba.txt", "text/plain",
multipartFileBuilder.build().getInputStream());
mvc.perform(multipart("/galeria/" + galeria.getId() + "/archivo")
.file(file)
.param("archivoId", archivo.getId().toString())
.contentType(MediaType.MULTIPART_FORM_DATA))
.andExpect(status().isOk()).andDo(print());
}
}
Class BaseControllerTest
package com.navastud.apibackendcuentos.swagger.api;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import org.junit.jupiter.api.BeforeEach;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.web.servlet.MockMvc;
@SpringBootTest
@AutoConfigureMockMvc
public class BaseControllerTest {
@Autowired
protected MockMvc mvc;
@Autowired
protected ObjectMapper objectMapper;
@BeforeEach
void setUpBase() {
objectMapper = new ObjectMapper();
objectMapper.registerModule(new JavaTimeModule());
}
}
Class GaleriaAPI (class created with swagger-codegen)
package com.navastud.apibackendcuentos.swagger.api;
import com.navastud.apibackendcuentos.swagger.model.ArchivoDTO;
import com.navastud.apibackendcuentos.swagger.model.GaleriaDTO;
import com.navastud.apibackendcuentos.swagger.model.MessageResponseDTO;
import org.springframework.core.io.Resource;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.swagger.annotations.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.bind.annotation.CookieValue;
import javax.servlet.http.HttpServletRequest;
import javax.validation.Valid;
import javax.validation.constraints.*;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Optional;
@Api(value = "galeria", description = "the galeria API")
public interface GaleriaApi {
Logger log = LoggerFactory.getLogger(GaleriaApi.class);
default Optional<ObjectMapper> getObjectMapper(){
return Optional.empty();
}
default Optional<HttpServletRequest> getRequest(){
return Optional.empty();
}
default Optional<String> getAcceptHeader() {
return getRequest().map(r -> r.getHeader("Accept"));
}
@ApiOperation(value = "Registar o actualiza un archivo", nickname = "createArchivoInGaleria", notes = "", response = ArchivoDTO.class, tags={ "galeria-api-controller", })
@ApiResponses(value = {
@ApiResponse(code = 200, message = "Archvio registrado y/o actualizado correctamente", response = ArchivoDTO.class),
@ApiResponse(code = 409, message = "Error de negocio", response = MessageResponseDTO.class),
@ApiResponse(code = 500, message = "Error interno", response = MessageResponseDTO.class) })
@RequestMapping(value = "/galeria/{galeriaId}/archivo",
produces = { "application/json" },
consumes = { "multipart/form-data" },
method = RequestMethod.POST)
default ResponseEntity<ArchivoDTO> createArchivoInGaleria(@ApiParam(value = "", required=true) @RequestParam(value="archivoId", required=true) Long archivoId
,@ApiParam(value = "file detail") @Valid @RequestPart("file") MultipartFile file
,@ApiParam(value = "ID de la galeria",required=true) @PathVariable("galeriaId") Long galeriaId
) {
if(getObjectMapper().isPresent() && getAcceptHeader().isPresent()) {
if (getAcceptHeader().get().contains("application/json")) {
try {
return new ResponseEntity<>(getObjectMapper().get().readValue("{\r\n \"tipo\" : \"tipo\",\r\n \"file\" : \"\",\r\n \"length\" : 1,\r\n \"id\" : 6,\r\n \"nombre\" : \"nombre\"\r\n}", ArchivoDTO.class), HttpStatus.NOT_IMPLEMENTED);
} catch (IOException e) {
log.error("Couldn't serialize response for content type application/json", e);
return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
} else {
log.warn("ObjectMapper or HttpServletRequest not configured in default GaleriaApi interface so no example is generated");
}
return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
}
}
Class ArchivoDTO (class created with swagger-codegen)
package com.navastud.apibackendcuentos.swagger.model;
import java.util.Objects;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonCreator;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import org.springframework.core.io.Resource;
import org.springframework.validation.annotation.Validated;
import javax.validation.Valid;
import javax.validation.constraints.*;
/**
* ArchivoDTO
*/
@Validated
public class ArchivoDTO {
@JsonProperty("id")
private Long id = null;
@JsonProperty("nombre")
private String nombre = null;
@JsonProperty("tipo")
private String tipo = null;
@JsonProperty("file")
private Resource file = null;
@JsonProperty("length")
private Long length = null;
public ArchivoDTO id(Long id) {
this.id = id;
return this;
}
/**
* Get id
* @return id
**/
@ApiModelProperty(required = true, readOnly = true, value = "")
@NotNull
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public ArchivoDTO nombre(String nombre) {
this.nombre = nombre;
return this;
}
/**
* Get nombre
* @return nombre
**/
@ApiModelProperty(required = true, value = "")
@NotNull
public String getNombre() {
return nombre;
}
public void setNombre(String nombre) {
this.nombre = nombre;
}
public ArchivoDTO tipo(String tipo) {
this.tipo = tipo;
return this;
}
/**
* Get tipo
* @return tipo
**/
@ApiModelProperty(required = true, value = "")
@NotNull
public String getTipo() {
return tipo;
}
public void setTipo(String tipo) {
this.tipo = tipo;
}
public ArchivoDTO file(Resource file) {
this.file = file;
return this;
}
/**
* Get file
* @return file
**/
@ApiModelProperty(required = true, value = "")
@NotNull
@Valid
public Resource getFile() {
return file;
}
public void setFile(Resource file) {
this.file = file;
}
public ArchivoDTO length(Long length) {
this.length = length;
return this;
}
/**
* Get length
* @return length
**/
@ApiModelProperty(required = true, value = "")
@NotNull
public Long getLength() {
return length;
}
public void setLength(Long length) {
this.length = length;
}
@Override
public boolean equals(java.lang.Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ArchivoDTO archivoDTO = (ArchivoDTO) o;
return Objects.equals(this.id, archivoDTO.id) &&
Objects.equals(this.nombre, archivoDTO.nombre) &&
Objects.equals(this.tipo, archivoDTO.tipo) &&
Objects.equals(this.file, archivoDTO.file) &&
Objects.equals(this.length, archivoDTO.length);
}
@Override
public int hashCode() {
return Objects.hash(id, nombre, tipo, file, length);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("class ArchivoDTO {\n");
sb.append(" id: ").append(toIndentedString(id)).append("\n");
sb.append(" nombre: ").append(toIndentedString(nombre)).append("\n");
sb.append(" tipo: ").append(toIndentedString(tipo)).append("\n");
sb.append(" file: ").append(toIndentedString(file)).append("\n");
sb.append(" length: ").append(toIndentedString(length)).append("\n");
sb.append("}");
return sb.toString();
}
/**
* Convert the given object to string with each line indented by 4 spaces
* (except the first line).
*/
private String toIndentedString(java.lang.Object o) {
if (o == null) {
return "null";
}
return o.toString().replace("\n", "\n ");
}
}
Test Error
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class sun.nio.ch.ChannelInputStream]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class sun.nio.ch.ChannelInputStream and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.navastud.apibackendcuentos.swagger.model.ArchivoDTO["file"]->org.springframework.core.io.FileSystemResource["inputStream"])
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:72)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:167)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:183)
at com.navastud.apibackendcuentos.swagger.api.GaleriaApiControllerTest.createArchivoInGaleriaTest(GaleriaApiControllerTest.java:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:212)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:208)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:137)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:71)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)
Caused by: org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class sun.nio.ch.ChannelInputStream]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class sun.nio.ch.ChannelInputStream and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.navastud.apibackendcuentos.swagger.model.ArchivoDTO["file"]->org.springframework.core.io.FileSystemResource["inputStream"])
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:293)
at org.springframework.http.converter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:104)
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:287)
at org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor.handleReturnValue(HttpEntityMethodProcessor.java:219)
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:82)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:123)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
... 84 more
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class sun.nio.ch.ChannelInputStream and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.navastud.apibackendcuentos.swagger.model.ArchivoDTO["file"]->org.springframework.core.io.FileSystemResource["inputStream"])
at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:77)
at com.fasterxml.jackson.databind.SerializerProvider.reportBadDefinition(SerializerProvider.java:1277)
at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400)
at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.failForEmpty(UnknownSerializer.java:71)
at com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.serialize(UnknownSerializer.java:33)
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:723)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166)
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:723)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
at com.fasterxml.jackson.databind.ObjectWriter$Prefetch.serialize(ObjectWriter.java:1513)
at com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:1005)
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:287)
... 95 more