Question

我在生成之后得到了一个错过的字段（添加到我的JsonArray）。我通过ObjectInputStream接收下面的Json String。

[{"firstName":"Vasile","lastName":"Petraru","department":"Management","salary":5600},{"firstName":"Ion","lastName":"Andronic","department":"Finante","salary":3222}]

 Gson gson = new Gson();
 String a =  new String(inputStream.readObject().toString());
 JsonParser parser = new JsonParser();
 JsonArray jArray = parser.parse(a).getAsJsonArray();

 ArrayList<Employee> employees = new ArrayList<>();
 for(JsonElement obj : jArray){
      Employee b = gson.fromJson(obj,Employee.class);
      employees.add(b);
 }

在我添加到JsonArray之后：

public String generateJSON() {
    JSONObject object = new JSONObject();
    JSONArray array = new JSONArray();
    try {
        object.put("Employees", employees);
        array.put(object); // <-- here is the probem...
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return array.toString();
}

a = generateJSON();
System.out.println("\nAfter generating: " + a);
// --->

[{"Employees":[{"lastName":"Petraru","salary":5600,"department":"Management"},{"lastName":"Andronic","salary":3222,"department":"Finante"}]}]

生成后我收到了所需的字符串，但没有＆＃34; firstName＆＃34;元素... 为什么以及如何解决这个问题？感谢

员工类：

public class Employee implements Serializable {
public String firstName;
public String lastName;
public String department;
public int salary;

public Employee(String firstName, String lastName, String department, int salary){
    this.firstName = firstName;
    this.lastName = lastName;
    this.department = department;
    this.salary = salary;
}

Answer 1

不是直接使用员工类，而是可以尝试这样的事情：

JSONObject jo = new JSONObject();
jo.put("firstName", employee.getFirstName);
jo.put("lastName", employee.getLastName);

JSONArray ja = new JSONArray();
ja.put(jo);

JSONObject mainObj = new JSONObject();
mainObj.put("employees", ja);

并在Employee类中声明getter和setter。如果有效，请告诉我。

添加到缺少元素的JsonArray结果

1 个答案: