json request not parsed in controller correctly - json

Question

i am struggling with something that should work but doesn't...
i have this mapping in my controller:
#RequestMapping(value = "/keys", method = RequestMethod.POST)
#Consumes(MediaType.APPLICATION_JSON)
public ResponseEntity<Void> parseKeyList(keyList keyList) {
return new ResponseEntity<Void>(HttpStatus.OK);
}
with the simple class
#XmlRootElement
public class keyList {
private String keys;
public String getKeys() {
return keys;
}
public void setKeys(String keys) {
this.keys = keys;
}
}
And I am sending this simple JSON post:
{"keys": "This is my key list"}
but I am getting null in the keys.
As requested the original dispatcher-servlet:
<context:component-scan base-package="com.api" />
<!-- <mvc:resources mapping="/*" location="/WEB-INF/pages/" /> -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>

Answer 1

You haven't attached your keyList param to the request body, change the method to:
#RequestMapping(value = "/keys", method = RequestMethod.POST)
#Consumes(MediaType.APPLICATION_JSON)
public ResponseEntity<Void> parseKeyList(#RequestBody keyList keyList) {
return new ResponseEntity<Void>(HttpStatus.OK);
}
Btw.: Class keyList should rather be KeyList (with big K).
Also there is (look at the chat) a
<mvc:annotation-driven/>
missing from your dispatcher-servlet.xml. That's the one that is registering the jackson mapper/marshaller.