Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: No converter found for return value of type: - spring

Question

I am trying to expose REST service, but while hitting it from POSTMAN i am getting below :
WARNING: Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: No converter found for return value of type: class java.util.ArrayList
Where as i have also included below jar files which are required :
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.1</version>
</dependency>
Here is my REST controller Code :
#RestController
#RequestMapping("/MayankAPI")
public class TestRestAPI {
#RequestMapping(value="/sayHello" , method = RequestMethod.POST)
public TestPojo postData(#RequestBody String payload) {
System.out.println("Hello post"+payload);
TestPojo payload1=new TestPojo();
payload1.setStudentName("Jack");
return payload1;
}
#RequestMapping(value="/sayHello" , method = RequestMethod.GET)
public List<TestPojo> getData(String payload) {
System.out.println("Hello get"+payload);
List<TestPojo> payload1=new ArrayList<TestPojo>();
TestPojo tp = new TestPojo();
tp.setStudentName("Jack");
payload1.add(tp);
return payload1;
}
Here is my bean which i am trying to return :
public class TestPojo {
private String studentName;
private String studentId;
public String getStudentName() {
return studentName;
}
public void setStudentName(String studentName) {
this.studentName = studentName;
}
public String getStudentId() {
return studentId;
}
public void setStudentId(String studentId) {
this.studentId = studentId;
}
}
Please help me where i am doing wrong.

Answer 1

I know it too late but still
Alternate Solution:
you need to enable Spring project as Web MVC as follow:
#Configuration
#EnableWebMvc
#ComponentScan("basePackages = com.test")
public class MiBenefitConfiguration
{
}

Answer 2

This is happening because MappingJackson2HttpMessageConverter is not registered in my App config file as below.
#Configuration
#ComponentScan("basePackages = com.test")
public class MiBenefitConfiguration extends WebMvcConfigurationSupport{
#Bean
public ObjectMapper getObjectMapper() {
return new ObjectMapper();
}
#Bean
public MappingJackson2HttpMessageConverter messageConverter() {
MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
converter.setObjectMapper(getObjectMapper());
return converter;
}
#Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add(messageConverter());
addDefaultHttpMessageConverters(converters);
}
}