java - 复杂 Json 到嵌套 POJO spring MVC

Question

我正在尝试使用 @RequestBody Instance instance 将以下 Json 导入 POJOS

{
  "service_id": "service-id-here",
  "plan_id": "plan-id-here",
  "context": {
    "platform": "cloudfoundry",
    "some_field": "some-contextual-data"
  },
  "organization_guid": "org-guid-here",
  "space_guid": "space-guid-here",
  "parameters": {
    "agent_name": 1,
    "url": "foo",
    "credential": "asdasd",
    "ia_url": "asdasd"
  }
}

下面是我的 POJO

实例

public class Instance {
    @JsonProperty(value = "service_id")
    String serviceId;
    @JsonProperty(value = "plan_id")
    String planId;
    //TODO : Replace with Context class when the spec defines things clearly
    @JsonProperty(value = "context")
    Object context;
    @JsonProperty(value = "organization_guid")
    String organizationGuid;
    @JsonProperty(value = "space_guid")
    String spaceGuid;
    @JsonProperty(value = "parameters")
    Parameters parameters;
}

参数

    public class Parameters {
        @JsonProperty(value = "agent_name")
        String agentName;
        @JsonProperty(value = "url")
        String url;
        @JsonProperty(value = "credential")
        String credential;
        @JsonProperty(value = "ia_url")
        String iaUrl;
}

我使用@JsonProperty到处。有没有办法将下划线分隔的json键放入java的变量命名约定(Camelcase)中？

我尝试使用@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)到我的 POJO 类而不是 @JsonProperty对于每个参数。我只是得到一个空的 json {}在instance 。我在这里缺少什么？

Answer 1

是的，通过 JsonNaming 注释使用 PropertyNamingStrategy 类是否可以实现这一点

例如:

@JsonNaming(PropertyNamingStartergy.LowerCaseWithUnderscoresStrategy.class)
class Class_name{
  ...
}

//----以下代码已更新。在该代码中我使用

PropertyNamingStrategy.SnakeCaseStrategy

工作代码(已测试)。

getter 和 setter 对于此工作非常重要。但 @JsonProperty 不需要它们

用户.java

@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
public class User {
    private int id;
    private String beanName;
    private Role role;


    public Role getRole() {
        return role;
    }
    public void setRole(Role role) {
        this.role = role;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getBeanName() {
        return beanName;
    }
    public void setBeanName(String beanName) {
        this.beanName = beanName;
    }

}

角色.java

@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
public class Role {
    private int id;
    private String roleName;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getRoleName() {
        return roleName;
    }
    public void setRoleName(String roleName) {
        this.roleName = roleName;
    }

}

这是 Controller

@RestController
@RequestMapping("/test")
public class NamingController {

    @RequestMapping(value="/jsontopojo", method = RequestMethod.POST)
    public ResponseEntity<User> jsontopojo(@RequestBody User nam) {
        return new ResponseEntity<User>( nam, HttpStatus.OK);
    }

}