java - Jackson Serializing Enums And Non Traditional Setters/Getters -

i trying serialize class has enum 1 of members. setters , getters enum in class trying serialize not follow classic format. below example of mean

public class myobj {      private stateenum state;      public string getstate() { // problem getter         return state == null ? null : state.name();     }      public void setstate(string state) { // problem setter         this.state = stateenum.valueof(state);     } }  public enum stateenum implements cloneable {     active("active"),      preprocess("preprocessing"),      select("selecting");      private final string description;      entitystate(string description) {         this.description = description;     }      @override     public string tostring() {         return "entitystate: " + this.description;     } 

}

currently serialize/deserialize using similar following.

myobj obj = new myobj(); objectmapper omap = new objectmapper(); string payload = omap.writevalueasstring(obj); myobj deserializedobj = omap.readvalue(obj); 

and error: com.fasterxml.jackson.databind.jsonmappingexception: name null

how can go serializing/deserializing without changing setter , getter (adding @json tags okay)?

the problem has nothing jackson. has setter not handling null correctly, , throwing nullpointerexception.

if had read full stack trace of exception (and posted it, avoid forcing guess problem), have noticed it:

caused by: java.lang.nullpointerexception: name null     @ java.lang.enum.valueof(enum.java:236)     @ com.foo.stateenum.valueof(stateenum.java:3)     @ com.foo.myobj.setstate(myobj.java:15)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:483)     @ com.fasterxml.jackson.databind.deser.impl.methodproperty.set(methodproperty.java:113) 

replace by

this.state = state == null ? null : stateenum.valueof(state);