java - How to deserialize json string into object -

{    "locallocationid [id=1]":{       "type":"folderlocation",       "id":{          "type":"locallocationid",          "id":1       },       "parentid":{          "type":"locallocationid",          "id":0       },       "name":"test",       "accessibletouser":true,       "defaultlocation":false,       "timezoneid":"asia/calcutta",       "children":[]    },    "locallocationid [id=0]":{       "type":"folderlocation",       "id":{          "type":"locallocationid",          "id":0       },       "parentid":null,       "name":"locations",       "accessibletouser":false,       "defaultlocation":false,       "timezoneid":"asia/calcutta",       "children":[{          "type":"locallocationid",          "id":1       }]    },    "allallowedchildren":[{       "type":"locallocationid",       "id":1    }] } 

how deserialize above string java object.

class im using is

public class tree {      @serializedname("allallowedchildren")     private list<id> allallowedchildren;      @serializedname("locallocationid")     private map<string, locallocationid> locallocationid;      public class locallocationid {         @serializedname("type")         private string type;          @serializedname("name")         private string name;          @serializedname("accessibletouser")         private boolean accessibletouser;          @serializedname("defaultlocation")         private boolean defaultlocation;          @serializedname("timezoneid")         private string timezoneid;          @serializedname("id")         private id id;          @serializedname("parentid")         private id parentid;          @serializedname("children")         private list<id> children;          public string gettype() {             return type;         }         public string getname() {             return name;         }         public boolean isaccessibletouser() {             return accessibletouser;         }         public boolean isdefaultlocation() {             return defaultlocation;         }         public string gettimezoneid() {             return timezoneid;         }         public id getid() {             return id;         }         public id getparentid() {             return parentid;         }         public list<id> getchildren() {             return children;         }     }      public class id {         private string type;         private integer id;          public string gettype() {             return type;         }         public integer getid() {             return id;         }     }      public list<id> getallallowedchildren() {         return allallowedchildren;     }     public map<string, locallocationid> getlocallocationid() {         return locallocationid;     } } 

@kedar

i'll assume in control of how json input string created. think json string not formatted correctly default gson deserialization of map types.

i have modified input string consideration , results in non null locallocationid

{    "locallocationid":[    [      "1",        {           "type":"folderlocation",           "id":{              "type":"locallocationid",              "id":1           },           "parentid":{              "type":"locallocationid",              "id":0           },           "name":"test",           "accessibletouser":true,           "defaultlocation":false,           "timezoneid":"asia/calcutta",           "children":[]        }    ],    [      "2",        {           "type":"folderlocation",           "id":{              "type":"locallocationid",              "id":0           },           "parentid":null,           "name":"locations",           "accessibletouser":false,           "defaultlocation":false,           "timezoneid":"asia/calcutta",           "children":[{              "type":"locallocationid",              "id":1           }]        }    ]    ],    "allallowedchildren":[{       "type":"locallocationid",       "id":1    }] } 

please comment if assumption input string incorrect.

edit 1: since input cannot modified, consider writing custom deserializer. below way register custom deserialisation class

gsonbuilder gsonb = new gsonbuilder();         gsonb.registertypeadapter(tree.class, new treedeserializer());         gson gson = gsonb.create(); 

below treedeserializer

public class treedeserializer implements jsondeserializer<tree> {      public tree deserialize(jsonelement json, type typeoft,             jsondeserializationcontext context) throws jsonparseexception {         tree out = new tree();          if (json != null) {             jsonobject obj  = json.getasjsonobject();             set<map.entry<string,jsonelement>> entries = obj.entryset();             (map.entry<string, jsonelement> e: entries) {                 if (e.getkey().equals("allallowedchildren")) {                     type ft = list.class;                     system.out.println(context.deserialize(e.getvalue(), ft));                     // todo add tree out object                 } else {                     // locallocationid                     system.out.println(e.getkey());                     system.out.println(context.deserialize(e.getvalue(), tree.locallocationid.class));                      // todo add tree out object                 }             }         }          return out;     }  } 

here console output sysouts.

locallocationid [id=1] org.test.stackoverflowanswers.tree$locallocationid@464bee09 locallocationid [id=0] org.test.stackoverflowanswers.tree$locallocationid@f6c48ac [{type=locallocationid, id=1.0}] org.test.stackoverflowanswers.tree@589838eb 

i have left todos in deserialiser you'll need write custom code inject values deserialisation tree class created. hope helps. can't provide full implementation, think partial solution