Question

我的jsonobject如下所示

{
      "TopLevelDomainList": {
        "TopLevelId": "01",
        "DomainName": "List of Domains for e-Governance",
        "APIVersion": "1.0",
        "ListVersion": "1.1",
        "ListVersionDate": "1/10/2015 12:30:50",
        "Banner": {
          "Image": "http://localhost/image/logo.jpg"
        },
        "Footer": {
          "Image": "http://localhost/image/footer.jpg"
        },
        "ParticipatingDomains": [
          {
            "Id": "1",
            "DomainName": "toplevel1",
            "Location": "http://toplevel.com",
            "Icon": "http://toplevel.com"
          },
          {
            "Id": "2",
            "DomainName": "toplevel2",
            "Location": "http://toplevel.com",
            "Icon": "http://toplevel.com"
          }
        ]
      }
    }

我在这里写java代码我想要的是ss或

ja =[{id:1,name:toplevel},{id:2,name:toplevel2}]




   JSONObject objj = firstSport.getJSONObject("TopLevelDomainList"); 
        String ob = objj.getString("TopLevelId"); 
        System.out.println("ob is !!!=>"+ob);

                    if(firstSport.has("TopLevelDomainList"))
                    {
                       count=1;                                
                       obj1 = objj.getJSONArray("ParticipatingDomains"); 

                        System.out.println("obj value is ===>"+obj1.length());


                        for (int i = obj1.length()-1; i >=0; i--) {

                            JSONObject rec = obj1.getJSONObject(i);
                             Id = rec.getString("Id");
                             System.out.println("id is !!!!!!!!!!!!!!!!!!!!!!"+Id);
                            Name = rec.getString("DomainName");
                            banobj.put("Id", Id);
                            banobj.put("DomainName", Name);
                            banobj.put("HasChildren", "true");
                            ja.put(banobj);

                            System.out.println("ja is ===> "+ja);
                            System.out.println("banobj1 value is !!!!"+banobj);


                        }               

                    ss=ja.toString();
                    System.out.println("ss is ===> "+ss);

现在我得到的是ja或ss值 [{id:2,name:toplevel2},{id:2,name:toplevel2}] 如果我正在尝试反向for循环，也会获得与ja数组1相同的值，而不是2;

Answer 1

您似乎正在为要放入数组的每个元素使用相同的 banobj（相同的引用），因此您只需 ovveride 其值周期。

尝试使用类似

的内容

  banobj.put("Id", Id);
  banobj.put("DomainName", Name);
  banobj.put("HasChildren", "true");
  ja.put(banobj);
  banobj = new BanObj(); // I don't know what should be here exaclty

Answer 2

谢谢，所以我需要添加元素，如果我把数据覆盖现有数据。现在我正在使用JsronArrayBuilder和JsonObjectBuilder来添加元素。它的工作正常。 JsonArrayBuilder builder1 = Json.createArrayBuilder（）; JsonObjectBuilder builder = Json.createObjectBuilder（）;

                for(int i=0;i<obj1.length();i++){
                    JSONObject rec = obj1.getJSONObject(i);
                     Id = rec.getString("Id");
                    Name = rec.getString("DomainName");
                           builder.add("Id",Id)
                            .add("DomainName", Name)
                            .add("HasChildren", "true");
                    builder1.add(builder);      

                }     empObj=builder1.build();


                ss=empObj.toString();

尝试将JSONObject放入JsonArray时覆盖JsonObject的for循环条件

2 个答案: