How to convert the following json string to java object

Question

I want to convert the following JSON string to a java object   String jsonString       libraryname   My Library    mymusic     Artist Name   Aaron   Song Name   Beautiful      Artist Name   Britney   Song Name   Oops I did It Again      Artist Name   Britney   Song Name   Stronger        My goal is to access it easily something like    e g  MyJsonObject myobj   new MyJsonObject jsonString  myobj mymusic 0  id would give me the ID  myobj libraryname gives me  My Library      I ve heard of Jackson  but I am unsure how to use it to fit the json string I have since its not just key value pairs due to the  mymusic  list involved  How can I accomplish this with Jackson or is there some easier way I can accomplish this if Jackson is not the best for this

User · Answer

Gson is also good for it  http   code google com p google-gson     Gson is a Java library that can be used to convert Java Objects into their JSON representation  It can also be used to convert a JSON string to an equivalent Java object  Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of     Check the API examples  https   sites google com site gson gson-user-guide TOC-Overview More examples  http   www mkyong com java how-do-convert-java-object-to-from-json-format-gson-api

User · Answer

No need to go with GSON for this  Jackson can do either plain Maps Lists   ObjectMapper mapper   new ObjectMapper    Map lt String Object gt  map   mapper readValue json  Map class     or more convenient JSON Tree   JsonNode rootNode   mapper readTree json     By the way  there is no reason why you could not actually create Java classes and do it  IMO  more conveniently   public class Library      JsonProperty  libraryname     public String name      JsonProperty  mymusic     public List lt Song gt  songs    public class Song      JsonProperty  Artist Name   public String artistName     JsonProperty  Song Name   public String songName     Library lib   mapper readValue jsonString  Library class

User · Answer

Check out Google s Gson  http   code google com p google-gson   From their website   Gson gson   new Gson       Or use new GsonBuilder   create    MyType target2   gson fromJson json  MyType class      deserializes json into target2   You would just need to make a MyType class  renamed  of course  with all the fields in the json string  It might get a little more complicated when you re doing the arrays  if you prefer to do all of the parsing manually  also pretty easy  check out http   www json org  and download the Java source for the Json parser objects

User · Answer

Gson gson   new Gson    JsonParser parser   new JsonParser    JsonObject object    JsonObject  parser parse response     response will be the json String YourPojo emp   gson fromJson object  YourPojo class

[java] How to convert the following json string to java object?

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