java - com.fasterxml.jackson.databind.node.ObjectNode cannot be converted to org.codehaus.jackson.node.ObjectNode -


i'm using play2.2.1 , facing error:

com.fasterxml.jackson.databind.node.objectnode cannot converted org.codehaus.jackson.node.objectnode

the code this:

package controllers;  import play.*; import play.data.*; import play.mvc.*; import play.db.ebean.*;  import views.html.*;  import java.util.*; import models.*; import com.avaje.ebean.expressionlist;  import play.data.validation.constraints.required;  import scala.*;  import play.libs.json; import org.codehaus.jackson.node.objectnode; public class application extends controller {  //create json data public static result ajax() {     string input = request().body().asformurlencoded().get("input")[0];     objectnode result = json.newobject();     if(input == null) {         result.put("status", "bad");         result.put("message", "can't sending data...");         return badrequest(result);     } else {         result.put("status", "ok");         result.put("message", input);         return ok(result);     } }

and error occurs @ objectnode result = json.newobject();. however, confirmed return value of static method newobject() org.codehaus.jackson.node.objectnode [][1]https://playframework.com/documentation/2.0/api/java/play/libs/json.html

the version of api reference 2.0, not 2.2, different exists here? profoundly, when import com.fasterxml.jackson.databind.node.objectnode , delete import org.codehaus.jackson.node.objectnode;, application works well. can explain behavior? why error message contradict api reference?

i assume there 2 versions of jackson library mixed in 1 project. old versions use org.codehaus.jackson namespace, while newer versions use com.fasterxml.jackson, because moved codehaus. had same problem, when used newer version of jackson , refactoring did not work properly. classes not compatible, have use com.fasterxml.jackson consistently.


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