我不知道我是否理解了你的问题。但是，你可以尝试将所有可能的JSON对象定义为一个对象，然后使用GSON或其他JSON转换工具序列化它们。像这样：

public class Parent {
    private AddressDetails addressDetails;
    private PersonalDetails personalDetails;
    private PersonalDetails confidentialDetails;
}
class AddressDetails{
    private List<HomeAddresses> homeAddresses;
    private List<CurrentAddress> currentAddresses;
}
class Addresses{
    private String houseNo;
    private String city;
}
class BirthDetails{
    private String birthDetails;
    private String birthMonth;
}
class HomeAddresses extends Addresses{
}
class CurrentAddress extends Addresses{
}
class PersonalDetails extends BirthDetails{
}

或者，如果要定义的类型太多，您可以简单地将JSON字符串转换为JSON对象，以便像这样使用：

String jsonStr = "{\n" +
            "  \"addressDetails\": {\n" +
            "    \"homeAddresses\": [\n" +
            "      {\n" +
            "        \"houseNo\": \"1\",\n" +
            "        \"city\": \"2\"\n" +
            "      }\n" +
            "    ],\n" +
            "    \"currentAddress\": {\n" +
            "      \"houseNo\": \"1\",\n" +
            "      \"city\": \"2\"\n" +
            "    }\n" +
            "  },\n" +
            "  \"personalDetails\": {\n" +
            "    \"birthDetails\": {\n" +
            "      \"birthPlace\": \"1\",\n" +
            "      \"birthMonth\": \"2\"\n" +
            "    }\n" +
            "  },\n" +
            "  \"confidentialDetails\": {\n" +
            "    \"birthDetails\": {\n" +
            "      \"birthPlace\": \"1\",\n" +
            "      \"birthMonth\": \"2\"\n" +
            "    }\n" +
            "  },\n" +
            "  \"bankingDetails\": {\n" +
            "    \"bankName\": \"1\",\n" +
            "    \"bankAccountNo\": 2\n" +
            "  }\n" +
            "}";
    JSONObject jsonObject = JSONUtil.parseObj(jsonStr);
    JSONObject addressDetails = jsonObject.get("addressDetails", JSONObject.class);
    JSONArray homeAddresses = addressDetails.get("homeAddresses", JSONArray.class);
    JSONObject object = homeAddresses.get(0, JSONObject.class);
    System.out.println(object.get("houseNo"));
    System.out.println(object.get("city"));

用Jackson库可以做到这一点，只需读取JSON并用addressDetails和bankingDetails键删除数据。

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.node.ObjectNode;
import java.io.IOException;

public class JavaApplication {

    public static void main(String[] args) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        mapper.enable(SerializationFeature.INDENT_OUTPUT);

        ObjectNode jsonData = (ObjectNode) mapper.readTree("{\"addressDetails\":{\"homeAddresses\":[{\"houseNo\":\"1\",\"city\":\"2\"}],\"currentAddress\":{\"houseNo\":\"1\",\"city\":\"2\"}},\"personalDetails\":{\"birthDetails\":{\"birthPlace\":\"1\",\"birthMonth\":\"2\"}},\"confidentialDetails\":{\"birthDetails\":{\"birthPlace\":\"1\",\"birthMonth\":\"2\"}},\"bankingDetails\":{\"bankName\":\"1\",\"bankAccountNo\":2}}");
        jsonData.remove("addressDetails");
        jsonData.remove("bankingDetails");
        System.out.println(mapper.writeValueAsString(jsonData));
    }
}

输出将为：

{
  "personalDetails" : {
    "birthDetails" : {
      "birthPlace" : "1",
      "birthMonth" : "2"
    }
  },
  "confidentialDetails" : {
    "birthDetails" : {
      "birthPlace" : "1",
      "birthMonth" : "2"
    }
  }
}

您可以将其反序列化为Map<String,Object>

public static void main(String[] args) throws JsonProcessingException {
    ObjectMapper objectMapper = new ObjectMapper(); // This is an expensive operation. objectMapper is thread-safe so it cane be shared
    String inboundJsonStr = "{\"name\":\"Jane Doe\",\"id\":2,\"is_active\":null}";
    Map<String,Object> jsonObject = objectMapper.readValue(inboundJsonStr, Map.class);
}

ObjectMapper来自Jackson库
sidenote：Java是一种类型化语言，如果你这样做，你将失去语言提供的类型检查的一些好处