java如何使用rest模板中的Json，并在Spring Boot中将每个元素映射到另一个Json

Question

我无法在SpringBoot中使用REST模板将一个已消费的json映射到另一个json到每个元素

控制器代码：

public List<Getrequests> getallrequests() {
List<Getrequests> list=Serviceobj.allrequestdata(); 
return list;
}

服务代码：

public List<Getrequests> allrequestdata() {
String urlGETList = "http://localhost:8082/myapp/userinfo/getusertype/asd454";//get by id call
ResponseEntity<Usertype[]> responseEntity =resttemplateobj.getForEntity(urlGETList, Usertype[].class);
Usertype[]objects = responseEntity.getBody();
List results = admininfoDaoobj.getallrequestsdata();
//results.add(objects);if i un comment this line of code i am getting 1 output means it just add to the list only
return results;
}

Dao代码：

public List<Getrequests> getallrequestsdata(){
String hql = "FROM Createrequest";
HttpHeaders headers = new HttpHeaders();
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
Query<Createrequest> query = getSession().createQuery(hql,Createrequest.class);
List resultlist= query.getResultList();
return resultlist;
}

Getrequests pojo类：

public class Getrequests{
        private String userid;
        private String username;
        private String userphoneno;

     .......getters and setters.....
}

用户类型pojo类：

public class Usertype{
private String usertype;
private String useraddress;

 .......getters and setters.....
}

1输出：

[
  {
    "userid":"asd454",
    "username":"satya",
    "userphoneno":"1234567890"
   },
  {
    "userid":"asd455",
    "username":"satya",
    "userphoneno":"1234567890"
   }
    [
    {
     "usertype":"admin,agent",
     "useraddress:"dsadasd,asdasdsa"
     },
     {
     "usertype":"agent",
     "useraddress:"asdasdsa"
     },
    ]
]

2输出

如果我在服务代码中注释resultlist.add(objects)意味着它没有添加到getrequest列表中，那么我将得到以下输出：

[
  {
    "userid":"asd454",
    "username":"satya",
    "userphoneno":"1234567890"
   },
  {
    "userid":"asd455",
    "username":"satya",
    "userphoneno":"1234567890"
   }
]

但是我需要映射每个用户ID，我需要显示用户类型和用户地址，如下面的输出

3输出

[
  {
    "userid":"asd454",
          [
            {
             "usertype":"admin,agent",
             "useraddress:"dsadasd,asdasdsa"
             }  ]  
    "username":"satya",
    "userphoneno":"1234567890"
   },
  {
    "userid":"asd455",
        [
           {
            "usertype":"agent",
            "useraddress:"asdasdsa"
            }
        ]
    "username":"satya",
    "userphoneno":"1234567890"
   }
]

我还尝试了在Dao中调用rest模板，但也没有得到响应

如何映射每个userid以显示usertype和用户地址，如上图3所示

Answer 1

从您的代码片段来看，您似乎想要生成特定的POJO签名。 有很多工具可以为您提供示例json请求的存根

从你的例子中，我想改变Getrequests就可以了， 比如：

public class Getrequests{
        private String userid;
        private String username;
        private String userphoneno;
        private Usertype userType;

     .......getters and setters.....
}

您可能还需要将其更改为列表引用，这取决于您的模式和总体需求

编辑

public class Getrequests{
    private String userid;
    private String username;
    private String userphoneno;
    private List<Usertype> userType;
}

如果我将引用作为列表，则以下示例为输出：

单个对象：

{
   "userid":"69",
   "username":"asd",
   "userphoneno":"09876",
   "userType":[
      {
         "usertype":"01",
         "useraddress":"1234"
      }
   ]
}

作为一个数组：

[
   {
      "userid":"94",
      "username":"asd",
      "userphoneno":"09876",
      "userType":[
         {
            "usertype":"01",
            "useraddress":"1234"
         }
      ]
   },
   {
      "userid":"53",
      "username":"asd",
      "userphoneno":"09876",
      "userType":[
         {
            "usertype":"01",
            "useraddress":"1234"
         }
      ]
   }
]