找不到类型的验证器：java.lang.Long ：找不到类型的验证器：java.lang.Long

Question

我有一个对象 class，它除了 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：找不到类型的验证器：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 @Size(max = 10) 替换为字段 port 和 versionCode

上相应的 @Max 注释

根据 javadoc，@Size 可用于以下类型：

字符串（计算字符串长度）
Collection（collection尺寸评估）
地图（评估地图大小）
数组（计算数组长度）
空元素被认为是有效的。

找不到类型的验证器：java.lang.Long ：找不到类型的验证器：java.lang.Long

No validator could be found for type: java.lang.Long :No validator could be found for type: java.lang.Long

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