java - Parse incoming JSON and remove wrapping boilerplate -


within program i'm calling api returns list of users. result wrapped in boilerplate this.

{   "d": {     "result" : [ ... here actual lsit ... ]   } }

i want parse result, cannot find easy way remove "d" , "result" incoming json string

i started creating own class staging user entity, because resultset not match users entity

class staginguser {     // same props api response per user }

my thought parse useres this

private list<staginguser> parseresult(@requestbody list<staginguser> stagingusers) {     return stagingusers; }

however require me rid of boilerplate result

you can use gson library. gson-2.8.0.jar

ignoring "d":

enter image description here

maven:

<dependency>     <groupid>com.google.code.gson</groupid>     <artifactid>gson</artifactid>     <version>2.8.0</version> </dependency>

staginguser:

public class staginguser {     private string hi;     private string name;     private string lastname;      public staginguser()     {      }      public string gethi ( )     {         return hi;     }      public void sethi ( string hi )     {         this.hi = hi;     }      public string getname ( )     {         return name;     }      public void setname ( string name )     {         this.name = name;     }      public string getlastname ( )     {         return lastname;     }      public void setlastname ( string lastname )     {         this.lastname = lastname;     }       @override     public string tostring ( )     {         return "staginguser [hi=" + hi + ", name=" + name + ", lastname=" + lastname + "]";     }   }

jsontest:

this getting json string format, parsing ignoring d wrapper, , set attributes stagingusers. printing informational purposes

import com.google.gson.jsonarray; import com.google.gson.jsonelement; import com.google.gson.jsonobject; import com.google.gson.jsonparser;  public class jsontest {      public static void main ( string [ ] args )     {         string jsoninstring = "{ \"d\": { \"result\" : [ \"hello\", \"frank\", \"provost\" ] } }";          system.out.println ( "printing json string" );         system.out.println ( jsoninstring );         system.out.println (  );          jsonparser parser =  new jsonparser();         jsonobject jsonobject = parser.parse(jsoninstring).getasjsonobject().get("d").getasjsonobject();         jsonarray jsonarray =  jsonobject.get("result").getasjsonarray();          system.out.println ( "printing result elements" );         for( jsonelement property : jsonarray)         {             system.out.println ( property.getasstring ( ));         }         system.out.println (  );           staginguser user = new staginguser ( );         user.sethi ( jsonarray.get ( 0 ).getasstring ( ) );         user.setname ( jsonarray.get ( 1 ).getasstring ( ) );         user.setlastname ( jsonarray.get ( 2 ).getasstring ( ) );          system.out.println ( "printing pojo: " );         system.out.println ( user.tostring ( ) );     }  }

output:

printing json string

{ "d": { "result" : [ "hello", "frank", "provost" ] } }

printing result elements

hello

frank

provost

printing pojo:

staginguser [hi=hello, name=frank, lastname=provost]


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