CODEWITHSUNDEEP
javaspringspring-mvcjackson
Hayi
Hayi

Reputation: 6236

Content type not supported issue

When i send with Postman a post request with JSON body (application/json) i got this error in spring-mvc (i am not using spring boot)

Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/json' not supported

I tried all SO topics about this error but nothing works :(

I have include also the dependencies for Jackson in my pom.xml to map JSON objects into POJOs.

So why it keeps telling me Content type 'application/json' not supported !

My controller

@RestController
public class FooRest {
    // even with consumes=MediaType.APPLICATION_JSON_VALUE it does not work
    @RequestMapping(value = "/api/foo", method = RequestMethod.POST)
    public String foo(HttpServletRequest request, @RequestBody FooBean bean) {
        ...
    }
}

My config

@Configuration
@EnableWebMvc
@ComponentScan({"controllers"})
public class AppConfig implements WebMvcConfigurer { }

My pom.xml

<dependencies>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${springframework.version}</version>
    </dependency>


    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.13</version>
    </dependency>

    ...

</dependencies>

curl version

POST /MY-API HTTP/1.1
Host: 127.0.0.1:8080
Content-Type: application/json
Cache-Control: no-cache
Postman-Token: 89859e26-813d-fb53-8726-57900f02207e

{ 
   //JSON OBJECT
}

SOLUTION

I changed 

<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>1.9.13</version>
</dependency>

To

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.9.8</version>
</dependency>

And it works finally :) can someone explain me why ?

Upvotes: 2

Views: 21305

Answers (1)

Augusto Jimenez
Augusto Jimenez

Reputation: 71

By the way, @PostMapping is specialized version of @RequestMapping annotation that acts as a shortcut for @RequestMapping(method = RequestMethod.POST).

Without any change in the Spring configuration (content-negotiation), methods annotated with @PostMapping consumes and produces content in default media type i.e. application/json. The use of consumes and produces attributes of @PostMapping is only justified if you want to consumes and produces content in a different media type i.e. application/xml.

So, the following code should be fine to you:

@RestController
public class FooRest {

    @PostMapping("/api/foo")
    public String foo(HttpServletRequest request, @RequestBody FooBean bean) {
        ...
    }
}

And finally, you need the accepts header in the request as application/json

Can you share us the curl version of you request?

Upvotes: 3

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