REST 和 JSON - 使用 jackson 将字符串转换为 JSON 数组 [重复]

Question

我是 JSON 和 REST 的新手。我正在测试一个返回如下字符串的rest API：

[{
    "Supervisor_UniqueName": "adavis",
    "Active": "true",
    "DefaultCurrency_UniqueName": "USD",
    "arches_type": "x-zensar/primary",
    "Groups": "",
    "TimeZoneID": "US/Pacific-New",
    "UniqueName": "!!pl-10958-611879240",
    "EmailAddress": "!!pl-10958-611879240@devmail.zensar.com",
    "LocaleID_UniqueName": "en_US",
    "Name": "!!pl-10958-611879240"
}, {
    "Supervisor_UniqueName": "adavis",
    "Active": "true",
    "DefaultCurrency_UniqueName": "USD",
    "arches_type": "x-zensar/primary",
    "Groups": "",
    "TimeZoneID": "US/Pacific-New",
    "UniqueName": "!!pl-10958-789764779",
    "EmailAddress": "!!pl-10958-789764779@devmail.zensar.com",
    "LocaleID_UniqueName": "en_US",
    "Name": "!!pl-10958-789764779"
}, {
    "Supervisor_UniqueName": "adavis",
    "Active": "true",
    "DefaultCurrency_UniqueName": "USD",
    "arches_type": "x-zensar/primary",
    "Groups": "Report User",
    "TimeZoneID": "US/Pacific-New",
    "UniqueName": "105838945",
    "EmailAddress": "105838945@devmail.zensar.com",
    "LocaleID_UniqueName": "en_US",
    "Name": "105838945"
}, {
    "Supervisor_UniqueName": "adavis",
    "Active": "true",
    "DefaultCurrency_UniqueName": "USD",
    "arches_type": "x-zensar/primary",
    "Groups": "Report User, Report Manager, Report Administrator",
    "TimeZoneID": "US/Pacific-New",
    "UniqueName": "112352755",
    "EmailAddress": "112352755@devmail.zensar.com",
    "LocaleID_UniqueName": "en_US",
    "Name": "112352755"
}]

我调用rest API如下：

final ResponseEntity<String> responseEntity = restTemplate.getForEntity(resourceUrl , String.class);

其中restTemplate 的类型为RestTemplate

我想将它们转换为 JSON 数组，访问每个 Json 对象并获取每个对象的字段和值。

是否可以使用杰克逊来做到这一点？

Answer 1

您可以使用Jackson。

这是您的 JSON 的（一部分）：

[  
   {  
      "Supervisor_UniqueName":"adavis",
      "Active":"true",
      "DefaultCurrency_UniqueName":"USD",
      "arches_type":"x-zensar/primary",
      "Groups":"",
      "TimeZoneID":"US/Pacific-New",
      "UniqueName":"!!pl-10958-611879240",
      "EmailAddress":"!!pl-10958-611879240@devmail.zensar.com",
      "LocaleID_UniqueName":"en_US",
      "Name":"!!pl-10958-611879240"
   },
   {  
      "Supervisor_UniqueName":"adavis",
      "Active":"true",
      "DefaultCurrency_UniqueName":"USD",
      "arches_type":"x-zensar/primary",
      "Groups":"",
      "TimeZoneID":"US/Pacific-New",
      "UniqueName":"!!pl-10958-789764779",
      "EmailAddress":"!!pl-10958-789764779@devmail.zensar.com",
      "LocaleID_UniqueName":"en_US",
      "Name":"!!pl-10958-789764779"
   }
]

只是给你一个想法：

public MyClass {

  @JsonProperty("Supervisor_UniqueName")
  private String superVisorUniqueName;

  @JsonProperty("Active")
  private String active;

  // etc

  // getters and setters    
}

将 JSON 映射到您的 MyClass:

ObjectMapper mapper = new ObjectMapper();
List<MyClass> obj = mapper.readValue(json, new TypeReference<List<MyClass>>() {});