dropwizard-giving-400-error-when-creating-new-resource using POST

Question

public class UserProfileData {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;

    @Column(name = "firstName", nullable = false)
    private String firstName;

    @Column(name = "lastName", nullable = true)
    private String lastName;

    @Column(name = "country", nullable = true)
    private String country;

    public UserProfileData() {
    }

    public UserProfileData(String firstName, String lastName, String country) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.country = country;
    }


    public long getId() {
        return id;
    }


    public void setObjectId(long id) {
        this.id = id;
    }

    @JsonProperty
    public String getFirstName() {
        return firstName;
    }

    @JsonProperty
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    @JsonProperty
    public String getLastName() {
        return lastName;
    }

    @JsonProperty
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    @JsonProperty
    public String getCountry() {
        return country;
    }

    @JsonProperty
    public void setCountry(String country) {
        this.country = country;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof UserProfileData)) return false;

        final UserProfileData that = (UserProfileData) o;

        return Objects.equals(this.id, that.id) &&
                Objects.equals(this.firstName, that.firstName) &&
                Objects.equals(this.lastName, that.lastName) &&
                Objects.equals(this.country, that.country);
    }

    @Override
    public int hashCode() {
        return Objects.hash(id, firstName, lastName, country);
    }
}

========================================================================

DAO Method

   public UserProfileData create(UserProfileData userProfileData) {
        LOGGER.info("UserProfileData: Persisting New User");
        return persist(userProfileData);        
    }

=======================================================================

Resource Call
@Path("/user")
@Produces(MediaType.APPLICATION_JSON)
public class UserProfileDataResource {

 @POST
    @Path("/create")
    @Consumes(MediaType.APPLICATION_JSON)
    @UnitOfWork
    public UserProfileData createUser(UserProfileData userProfileData) {
        //ResourceHelper.checkRequiredParams(requesterId);
        LOGGER.info("User created");
        return userProfileDataDAO.create(userProfileData);
    }
======================================================================

当我调用资源使用创建一个新的用户数据它给我的错误

curl-H“内容类型：application/json”-X POST-d“{”firstName:“Sachin”，“lastName:“Tendulkar”，“country:“India”}”http://localhost:8080/user/create

错误：{“代码”：400，“消息”：“无法处理JSON”，“详细信息”：null}

几乎所有的东西都试过了，但无法找出为什么会出现这个错误以及如何解决它？

Answer 1

您的curl请求使用引号（“”）封装JSON数据，由于JSON中的引号而中断。所以你发送给服务器的实际上是“{”。

用撇号（'）代替：

curl -H "Content-Type: application/json" -X POST -d '{"firstName":"Sachin","lastName":"Tendulkar","country":"India"}' http://localhost:8080/user/create

Answer 2

出现这种错误可能有几个原因。尝试将要调试的日志记录级别放入配置文件中，即：

logging:
    level: DEBUG

Answer 3

要获取有关400错误的有用信息，请在jersey上注册：

environment.jersey().register(new JsonProcessingExceptionMapper(true));

它将给出更详细的400条回复信息。