How can I deseralize json object in java pojo class? - json

Question

I have a simple JSON statement which type is very per need. like this
{
actor:{name:"kumar",mbox:"kumar#gmail.com"}
verb :"completed"
}
or
{
actor:{name:["kumar","manish"],mbox:["kumar#gmail.com","manish#gmail.com"]}
verb :{
"id" : "http://adlnet.gov/expapi/verbs/completed",
"display" : {
"en-US" : "completed"
}
}
I am using using POJO class to map this json string and pojo class code is given bleow
#JsonProperty("actor")
Actor actor;
#JsonProperty("verb")
Verb objVerb;
#JsonProperty("verb")
String verb;
public Actor getActor() {
return actor;
}
public void setActor(Actor actor) {
this.actor = actor;
}
public Verb getObjVerb() {
return objVerb;
}
public void setObjVerb(Verb objVerb) {
this.objVerb = objVerb;
}
#JsonIgnore
public String getVerb() {
return verb;
}
#JsonIgnore
public void setVerb(String verb) {
this.verb = verb;
}
public static class Actor {
String objectType;
#JsonProperty("name")
ArrayList<String> listName;
#JsonProperty("name")
String name;
#JsonProperty("mbox")
ArrayList<String> listMbox;
#JsonProperty("mbox")
String mbox;
#JsonProperty("mbox_sha1sum")
ArrayList<String> Listmbox_sha1sum;
#JsonProperty("mbox_sha1sum")
String mbox_sha1sum;
#JsonProperty("openid")
String openid;
#JsonProperty("account")
Account account;
public String getObjectType() {
return objectType;
}
public void setObjectType(String objectType) {
this.objectType = objectType;
}
public ArrayList<String> getListName() {
return listName;
}
public void setListName(ArrayList<String> listName) {
this.listName = listName;
}
#JsonIgnore
public String getName() {
return name;
}
#JsonIgnore
public void setName(String name) {
this.name = name;
}
public ArrayList<String> getListMbox() {
return listMbox;
}
public void setListMbox(ArrayList<String> listMbox) {
this.listMbox = listMbox;
}
#JsonIgnore
public String getMbox() {
return mbox;
}
#JsonIgnore
public void setMbox(String mbox) {
this.mbox = mbox;
}
public ArrayList<String> getListmbox_sha1sum() {
return Listmbox_sha1sum;
}
public void setListmbox_sha1sum(ArrayList<String> listmbox_sha1sum) {
Listmbox_sha1sum = listmbox_sha1sum;
}
#JsonIgnore
public String getMbox_sha1sum() {
return mbox_sha1sum;
}
#JsonIgnore
public void setMbox_sha1sum(String mbox_sha1sum) {
this.mbox_sha1sum = mbox_sha1sum;
}
public String getOpenid() {
return openid;
}
public void setOpenid(String openid) {
this.openid = openid;
}
public Account getAccount() {
return account;
}
public void setAccount(Account account) {
this.account = account;
}
public static class Account {
#JsonProperty("homePage")
String homePage;
#JsonProperty("name")
String name;
public String getHomePage() {
return homePage;
}
public void setHomePage(String homePage) {
this.homePage = homePage;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
}
public static class Verb {
String id;
Map<String,String> display;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Map<String, String> getDisplay() {
return display;
}
public void setDisplay(Map<String, String> display) {
this.display = display;
}
}
I am using jaxb and jakson. I am implementing the webservice to handle the json statement
so I use the bean class to map with json. But when I use to map this json then it gives the following exceptions
org.codehaus.jackson.map.JsonMappingException : property with the name "mbox" have two entry.
Define a proper bean structure so it directly mapped to the beans class

Answer 1

Try to leave only #JsonProperty("mbox") ArrayList<String> listMbox; field (don't need #JsonProperty("mbox")
String mbox;)
and add Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY=true to Jackson object mapper config.
So in deserialization it will be able to get as both array and single element.

Answer 2

you can use gson.
class cls = gson.fromJson(jsonString, clazz);
here jsonString can be stringified java script object. gson.fromJson method can map your java script key to java property.