如何在Java中将此JSON解析为我的POJO

Question

我有这个JSON结构，我试图解析为一个Java对象，但不知道我在这里错过了什么。

{
   "response":{
      "status":1,
      "httpStatus":200,
      "data":{
         "94":{
            "Offer":{
               "id":"94",
               "name":"Survey Junkie Panel - US, CA, AU (SOI)",
               "description":"<b>Description:</b> Start earning cash and rewards by doing surveys.<br><br>\r\n<b>Requirement:</b> Email Submit<br><br>\r\n<b>Country(ies):</b> US, CA, AU<br><br>\r\n<b>Media:</b> Display, Email<br><br>\r\n<b>Restrictions:</b> No incentives; no search; no pops; no brokering; no users under 18; no SnapChat<br><br>\r\n<b>Other:</b> New pubs need to pause at 300 leads and ask to be evaluated (if higher test cap is necessary, contact your affiliate manager to discuss). If traffic quality is good, Advertiser will lift lead cap as long as quality remains consistent. New partners should not start on weekends. Contact [e-mail] when you reach your assigned lead cap.<br><br>",
               "require_approval":"0",
               "require_terms_and_conditions":0,
               "terms_and_conditions":null,
               "preview_url":"https://www.surveyjunkie.com/",
               "currency":null,
               "default_payout":"1.20000",
               "protocol":"server",
               "status":"active",
               "expiration_date":"2030-12-23 04:59:59",
               "payout_type":"cpa_flat",
               "percent_payout":"0.00",
               "featured":null,
               "conversion_cap":"0",
               "monthly_conversion_cap":"0",
               "payout_cap":"0.00",
               "monthly_payout_cap":"0.00",
               "allow_multiple_conversions":"0",
               "allow_website_links":"0",
               "allow_direct_links":"0",
               "show_custom_variables":"0",
               "session_hours":"24",
               "show_mail_list":"0",
               "dne_list_id":"0",
               "email_instructions":"0",
               "email_instructions_from":"",
               "email_instructions_subject":"",
               "enforce_secure_tracking_link":"1",
               "has_goals_enabled":"0",
               "default_goal_name":"",
               "modified":1622672025,
               "use_target_rules":"0",
               "use_payout_groups":"0",
               "link_platform":"",
               "is_expired":"0",
               "dne_download_url":null,
               "dne_unsubscribe_url":null,
               "dne_third_party_list":false,
               "approval_status":"approved"
            },
            "Country":{
               "US":{
                  "id":"840",
                  "code":"US",
                  "name":"United States",
                  "regions":[
                     
                  ]
               },
               "AU":{
                  "id":"36",
                  "code":"AU",
                  "name":"Australia",
                  "regions":[
                     
                  ]
               },
               "CA":{
                  "id":"124",
                  "code":"CA",
                  "name":"Canada",
                  "regions":[
                     
                  ]
               }
            }
         }
      }
   }
}

我有报价数据：

@Getter @Setter
@JsonIgnoreProperties(ignoreUnknown = true)
public class OfferData {

  @JsonProperty("Offer")
  Offer offer;

  @JsonProperty("Country")
  Country country;

}

我已经恢复正常了，问题出在Country object上。

国家：

@Getter
@Setter
@JsonIgnoreProperties(ignoreUnknown = true)
public class Country {
  Map<String, CountryData> countryData;
}

国家数据：

@Getter
@Setter
@JsonIgnoreProperties(ignoreUnknown = true)
public class CountryData {
  @JsonProperty("id")
  private String id;
  @JsonProperty("code")
  private String code;
  @JsonProperty("name")
  private String name;
  @JsonProperty("regions")
  List<Region> regions;
}

我收到以下错误：

Servlet。路径为[]的上下文中的servlet[dispatcherServlet]的service（）引发了异常[请求处理失败；嵌套异常为org.springframework.web.client.RestClientException:提取类型[class com.sample.surveydemo.model.dto.OfferMapper]和内容类型[应用程序/json]的响应时出错]；嵌套异常为org。springframework。http。转换器。HttpMessageNoteableException：JSON解析错误：无法反序列化com类型的值。样品surveydemo。模型dto。来自数组值的国家/地区（tokenJsonToken.START\u Array）；嵌套异常为com。fasterxml。杰克逊。数据绑定。exc.MismatchedInputException：无法反序列化com类型的值。样品surveydemo。模型dto。国家（Country）来自[源：（org.springframework.util.StreamUtils$nonclosingputstream）；行：1，列：92576]（通过引用链：com.sample.surveydemo.model.dto.OfferMapper[“response”]-




Answer 1

去https://www.jsonschema2pojo.org/.复制并粘贴JSON数据并调整参数（生成getter和setter，toString e.t.c）。单击preview查看以POJO格式转换的JSON数据，或者您可以下载包含POJO类的zip文件。