java - Jackson Deserialization: How to map specific properties to getters and setters as well as loading all the properties into map of a same POJO? -

i need deserialize json string pojo class following scenario:

• some basic json properties should mapped getters , setters fields in pojo class.
• and again json properties should loaded map filed of same pojo class.

for example have following json string:

"entry":[    {         "id": "1",         "name": "type",         "type": "general",         "updated": "tue, 12 aug 2014 05:24:01.397z",         "summary": {             "lang": "en",             "value": "testing content"         }     },     {         "id": "1",         "name": "type",         "type": "general",         "updated": "tue, 12 aug 2014 05:24:01.397z",         "summary": {             "lang": "en",          "value": "testing content"         }       }   ] 

now need deserialize above json string following pojo class:

public class entrytype {     private string id;      private string name;      private string type;      private string updated;      private map<string,object> alljsonproperties;      public string getid() {         return id;     }      public void setid(string id) {         this.id = id;     }      public string getname() {         return name;     }      public void setname(string name) {         this.name = name;     }      public string gettype() {         return type;     }      public void settype(string type) {         this.type = type;     }      public string getupdated() {         return updated;     }      public void setupdated(string updated) {         this.updated = updated;     }      public map<string, object> getalljsonproperties() {         return alljsonproperties;     }      public void setalljsonproperties(map<string, object> alljsonproperties) {         this.alljsonproperties = alljsonproperties;     }  } 

i able map id,name,type,updated appropriate pojo class fields. don not know how load id,name,type,updated,summary properties again map(alljsonproperties) field. can 1 guide me how work out this?.

note: use jackson api version 2.2.2

you can consider deserialising object twice. firstly, create instance using constructor map parameter marked @jsoncreator annotation. secondly, populate newly created instance json values using objectmapper.readerforupdating method.

here example:

public class jacksonforupdate {      public static class bean {         private string name;         private map<string, object> properties;          public void setname(string name) {             this.name = name;         }          @jsoncreator         public bean(map<string, object> properties) {             this.properties = properties;         }          @override         public string tostring() {             return "bean{" +                     "name='" + name + '\'' +                     ", properties=" + properties +                     '}';         }     }     public static void main(string[] args) throws ioexception {         objectmapper mapper = new objectmapper();         final string json = "{\"name\":\"value\"}";         bean object = mapper.readvalue(json, bean.class);         system.out.println(mapper.readerforupdating(object).readvalue(json));     } } 

output:

bean{name='value', properties={name=value}} 

update: solution above wont work deserialisation of array of objects. 1 possible workaround construct object out of jsonnode, set properties map using objectmapper.convertvalue conversion, , populate field value before.

note objectmapper needs accessible inside bean class can done using the jackson value injection.

here example:

public class jacksonforupdate2 {      public static class bean {         private string name;         private map<string, object> properties;          public void setname(string name) {             this.name = name;         }          @jsoncreator         public bean(jsonnode node, @jacksoninject objectmapper mapper) throws ioexception {             this.properties = mapper.convertvalue(node, map.class);             mapper.readerforupdating(this).readvalue(node);         }          @override         public string tostring() {             return "bean{" +                     "name='" + name + '\'' +                     ", properties=" + properties +                     '}';         }     }     public static void main(string[] args) throws ioexception {         objectmapper mapper = new objectmapper();         // make mapper available bean         mapper.setinjectablevalues(new injectablevalues.std().addvalue(objectmapper.class, mapper));         final string json = "[{\"name\":\"value\"},{\"name\":\"value2\"}]";         system.out.println( mapper.readvalue(json, new typereference<list<bean>>() {}));     } } 

output:

[bean{name='value', properties={name=value}}, bean{name='value2', properties={name=value2}}] 

this doesn't longer elegant though.