JSON请求到Java数据结构

Question

I have following JSON request:

{
    "one":{
        "key":"value",
        "key":"value",
        "key":"value"
    },
    "two":[
        "value"
    ],
    "three":[
        "value"
    ],
    "four":[
        "value"
    ]
}

How can I represent it as a Java object/data structure? I can normally take JSON starting from "two" and handle it as follows:

@RequestBody Map<String, List<String>> inputParams

any suggestions?

Answer 1

Try this...

 Map<String, Object> inputParams;

 InnerObj innerObj = (InnerObj)inputParams.get("one");
 List<String> secondList = (List)inputParams.get("two");
 List<String> thirdLisr = (List)inputParams.get("three");
 '''

where

class InnerObj {
    String key1;
    String key2;
}

Answer 2

You can use Google GSON https://github.com/google/gson and parse your json to POJO and than use it. For example:

{ "key1":"value1", "key2":"value2", "key3":"value3" }

Gson gson = new Gson();
MyObj myObj = gson.fromJson(jsonObj, MyObj.class);

Where MyObj.java:

public class MyObj {
    String key1;
    String key2;
    String key3;
}

And in your controller you can use @RequestParam(value = "jsonObjFromClient") String jsonObj annotation.