需要帮助解析这个 JSON

Question

我有以下格式的 JSON 文件。第一个对象是客户信息，第二个是订单信息，然后是 n 个对象，表示每个订购零件的详细信息。我需要将其转换为 Java POJO。

这就是 JSON 的样子。它来自外部供应商，所以我必须按原样使用它。

{
    "report_title": "title",
    "result_date": "08/12/2020 22:40:51",
    "company": "company name",
    "add1": "123 main st",
    "add2": null,
    "city": "some city",
    "state": "state",
    "country": "United States of America",
    "zip": "12345",
    "name": "first last",
    "username": "firstlast",
    "role": "Manager"
},
{
    "launch_date": "08/12/2020 19:05:19",
    "client": "client1",
    "order_number": "1",
    "total_orders": "1",
    "type": "type",
    "status": "Finished",
    "reference": "order reference",
    "fulfill": "some name",
    "duration": "00:07:12",
    "order title": "title",
    "order_groups": null,
    "part_nums": "1,2,3",
  },
  {
  "part_num": "1234",
  "name": "asdf",
  "other_name": "asdf",
  "manufacturer": "aasdf",
  "status": "asdfasf",
  "id": 12345,
  "title": "some title",
  "type": "Ig",
  "notes": "long winded notes",
  "impact": null,
  "solution": null,
  },
  {
  "part_num": "1235",
  "name": "asdf1",
  "other_name": "asdf1",
  "manufacturer": "aasdf1",
  "status": "asdfasf1",
  "id": 12346,
  "title": "some title",
  "type": "Ig",
  "notes": "long winded notes",
  "impact": null,
  "solution": null,
  }
...

我创建了四个 classes：Customer、OrderInfo、OrderDetail 并包含 class Order.

class Order {
    Customer customer
    OrderInfo orderInfo;
    List<OrderDetail> orderDetailList;
}

我正在尝试使用 ObjectMapper，但我只获得了客户对象，没有别的。任何帮助表示赞赏。

编辑：这是我试过的

public static void main (String [] args) {
      File inputFile = new File(filepath);
       String content = Files.readString(Path.of(inputFile.getPath()), StandardCharsets.US_ASCII);

       ObjectMapper mapper = new ObjectMapper();
      
        Customer customer = mapper.readValue(content, Customer.class);
        OrderInfo orderInfo = mapper.readValue(content, OrderInfo.class);
}


@Data
@NoArgsConstructor
@JsonIgnoreProperties( ignoreUnknown = true )
public class Customer {
    @JsonProperty("report_title") private String reportTitle;
    @JsonProperty("result_date") private String resultDate;
    @JsonProperty("company") private String company;
...
}

Answer 1

我想我发布问题有点太早了。

我接受了 Ajay Kr Choudhary 的建议，只是分别解析每个节点并分别映射它们。没有我想要的那么高效或自动化，但总比没有好。

 JsonNode rootNode = mapper.readTree(inputFile);
 Customer customer = mapper.treeToValue(rootNode.get(0), Customer.class);
 OrderInfo orderInfo = mapper.treeToValue(rootNode.get(1), OrderInfo.class);
 OrderDetail orderDetail = mapper.treeToValue(rootNode.get(2), OrderDetail.class);

需要帮助解析这个 JSON

Need help parsing this JSON

java

json

parsing

pojo

jackson-databind