How to set the default content type in Spring MVC in no Accept header is provided?
Solution 1
From the Spring documentation, you can do this with Java config like this:
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
configurer.defaultContentType(MediaType.APPLICATION_JSON);
}
}
If you are using Spring 5.0 or later, implement WebMvcConfigurer
instead of extending WebMvcConfigurerAdapter
. WebMvcConfigurerAdapter
has been deprecated since WebMvcConfigurer
has default methods (made possible by Java 8) and can be implemented directly without the need for an adapter.
Solution 2
If you use spring 3.2.x, just add this to spring-mvc.xml
<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" />
<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="favorPathExtension" value="false"/>
<property name="mediaTypes">
<value>
json=application/json
xml=application/xml
</value>
</property>
<property name="defaultContentType" value="application/json"/>
</bean>
user86834
Updated on May 18, 2021Comments
-
user86834 almost 3 years
If a request is sent to my API without an Accept header, I want to make JSON the default format. I have two methods in my controller, one for XML and one for JSON:
@RequestMapping(method = RequestMethod.GET,produces=MediaType.APPLICATION_ATOM_XML_VALUE) @ResponseBody public ResponseEntity<SearchResultResource> getXmlData(final HttpServletRequest request) { //get data, set XML content type in header. } @RequestMapping(method = RequestMethod.GET, produces=MediaType.APPLICATION_JSON_VALUE) @ResponseBody public ResponseEntity<Feed> getJsonData(final HttpServletRequest request){ //get data, set JSON content type in header. }
When I send a request without an Accept header the
getXmlData
method is called, which is not what I want. Is there a way to tell Spring MVC to call thegetJsonData
method if no Accept header has been provided?EDIT:
There is a
defaultContentType
field in theContentNegotiationManagerFactoryBean
that does the trick.