JSON字符串到Java中的JSON对象

Question

Here is my JSON String

"[{"name":"3214657890RootSAPSSE","children":[{"name":"672BENIAMEEN .Sales Base Market SectionCustomer Representative"},{"name":"672BENIAMEEN .Sales Base Market SectionPeão"}]}]"

When I parse it to json object in java I get null. This Field is coming from HTML hidden field where it is coming from java script.

Here is my java code

String x = request.getParameter("JSONString");
System.out.println(x);
        JSONArray jsonObject = (JSONArray) JSONValue.parse(x);
        Gson gson = new Gson(); 
        java.lang.reflect.Type type = new TypeToken<List<EmployeeJSONObj>>(){}.getType();
        List<EmployeeJSONObj>l = gson.fromJson(jsonObject.toJSONString(), type);
        System.out.println(l.get(0).getName());

Here is my Java Class

public  class EmployeeJSONObj {
    private String name;
    private List<EmployeeJSONObj> children = new LinkedList<>();
    EmployeeJSONObj()
    {

    }
    public String getName()
    {
        return name;
    }

    public String toString() {
        return "name: " + name + ", children = " + children;
    }

}

Answer 1

Don't double-parse the string like that; it doesn't make sense to do so. Pass x directly to GSON.

String x = request.getParameter("JSONString");
Gson gson = new Gson(); 
java.lang.reflect.Type type = new TypeToken<List<EmployeeJSONObj>>(){}.getType();
List<EmployeeJSONObj>l = gson.fromJson(x, type);
System.out.println(l.get(0).getName());