java - 找不到类型 : java. lang.Long :No validator could be found for type: java. lang.Long 的 validator

Question

我有一个对象类，除了 Id 之外没有必填字段。这是代码:

Entity
@XmlRootElement
@Table(name = "T_HOST_SPEC")
@Cacheable(false)
@NamedQueries({
    @NamedQuery(name = HostSpec.FIND_ALL, query = "SELECT m FROM HostSpec m")
    ,@NamedQuery(name = HostSpec.FIND_BY_IP_CONTEXT_PATH_PORT, query = "SELECT m FROM HostSpec m WHERE m.ip = :ip AND m.contextPath =:contextPath AND m.port =:port ")})
public class HostSpec extends AbstractEntity {



    @Id
    @SequenceGenerator(name = "HOST_SPEC_SEQUENCE_GENERATOR", sequenceName = "HOST_SPEC_SEQ", initialValue = 1, allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "HOST_SPEC_SEQUENCE_GENERATOR")
    @XmlElement(name = "id")
    @NotNull
    @Column(name = "ID", nullable = false)
    private Long id;

    @Size(max =200 )
    @Column(name = "APP_NAME",length = 25)
    @XmlElement(name = "APP_NAME")
    private String appName;

    @Size(max =1000 )
    @Column(name = "APP_SERVER_INFO",length = 25)
    @XmlElement(name = "APP_SERVER_INFO")
    private String serverInfo;

    @Size(max =100 )
    @Column(name = "CONTEXT_PATH",length = 25)
    @XmlElement(name = "CONTEXT_PATH")
    private String contextPath;

    @Size(max =255 )
    @Column(name = "BUILD_DATE",length = 25)
    @XmlElement(name = "BUILD_DATE")
    private String buildDate;

    @Size(max =4000 )
    @Column(name = "DESCRIPTION",length = 25)
    @XmlElement(name = "DESCRIPTION")
    private String description;


    @Size(max =50 )
    @Column(name = "IP",length = 25)
    @XmlElement(name = "IP")
    private String ip;

    @Size(max =200 )
    @Column(name = "MODULE_NAME",length = 25)
    @XmlElement(name = "MODULE_NAME")
    private String moduleName;

    @Size(max =100 )
    @Column(name = "NAME",length = 25)
    @XmlElement(name = "NAME")
    private String name;

    @Size(max = 10)
    @XmlElement(name = "PORT")
    @Column(name = "PORT")
    private Long port;

    @Size(max =20 )
    @Column(name = "PROTOCOL",length = 25)
    @XmlElement(name = "PROTOCOL")
    private String protocol;


    @Size(max = 10)
    @XmlElement(name = "VERSION_CODE")
    @Column(name = "VERSION_CODE")
    private Long versionCode;

    @Size(max =100 )
    @Column(name = "VERSION_NAME",length = 25)
    @XmlElement(name = "VERSION_NAME")
    private String versionName;

    @Size(max =100 )
    @Column(name = "VIRTUAL_SERVER_NAME",length = 25)
    @XmlElement(name = "VIRTUAL_SERVER_NAME")
    private String serverName;

//getters & setters

当我尝试运行它时，抛出此异常:javax.validation.UnexpectedTypeException:HV000030:找不到类型的 validator :java.lang.Long请帮忙

Answer 1

@Size 不适用于 Long 类型(在这种情况下，您应使用 @Max)。

因此，您应该将 port 和 versionCode 字段上的 @Size(max = 10) 替换为相应的 @Max 注释

根据 javadoc，@Size 可用于以下类型:

• 字符串(评估字符串长度)
• 集合(评估集合大小)
• map (评估 map 大小)
• 数组(计算数组长度)
• null 元素被视为有效。