JsonMappingException：找不到类型[simple type，class com.fasterxml.jackson.databind.node.ObjectNode]的合适构造函数

Question

I have read JSONMappingException for External Object , JSONMappingException for Class but can't found solution for ObjectNode class.

By Reading JSONMappingException for External Object I understand that you have to register Object in mapper but I have not created any ObjectMapper class as I am calling web service

mapper.registerModule(new GeoModule());

I am trying to call web service of My POJO ( ReportQueryData.java ) which contain ObjectNode (com.fasterxml.jackson.databind.node.ObjectNode) instance variable.

ReportQueryData.java

import com.fasterxml.jackson.databind.node.ObjectNode;

public class ReportQueryData {
    private ObjectNode parentsData;

    public ObjectNode getParentsData() {
        return parentsData;
    }

    public void setParentsData(ObjectNode parentsData) {
        this.parentsData = parentsData;
    }
}

Now I am calling web service containing ReportQueryData in request and I am facing below exception

org.codehaus.jackson.map.JsonMappingException: No suitable constructor found for type [simple type, class com.fasterxml.jackson.databind.node.ObjectNode]: can not instantiate from JSON object (need to add/enable type information?)
[INFO] [talledLocalContainer]  at [Source: org.apache.catalina.connector.CoyoteInputStream@3da45801; line: 1, column: 155] (through reference chain: com.atlassian.qtm.model.ReportQueryData["parentsData"])
[INFO] [talledLocalContainer]   at org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163)
[INFO] [talledLocalContainer]   at org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromObjectUsingNonDefault(BeanDeserializer.java:740)
[INFO] [talledLocalContainer]   at org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:683)

Answer 1

You have to write default constructor for this class also like this

public ReportQueryData (){

}

Edit: : try to wrap that class in your and use your class.

 class A{

    A(String s){

    }
}

class B extends A{

    B(){
        super("str");
    }
}