Question

我在多个网站上搜索过，找到了一些解决方案，但这并没有解决我的问题。有人可以帮我这个。

问题： - 无法从类型[java.lang.Object []]转换为类型

我已尝试如下预测，能够从数据库中检索数据，但列值未与数据成员正确关联。列值随机映射到成员。

例如： - 实际结果：

[{ ipaddress = 1， ipaddressvalue = 256，ipnetmask = 24，ipaddresspoolid = 1， unallocatedcount = 0，ipaddresspoolrangeid = 10.101。 10.0，版本 = 174393856}]

预期结果：

[{ ipaddress = 10.101.10.0， ipaddressvalue = 174393856，ipnetmask = 24，ipaddresspoolid = 1， unallocatedcount = 256，ipaddresspoolrangeid = 1，版本 = 0}]

我的实体类： -

 @Entity
 @Table(name = "IPADDRESSALLOCATION")
public class IPAddressAllocation {
@Id
@Column(name = "ADDRESSALLOCATIONID")
@NotNull
private int addressAllocationId;

@Column(name = "IPADDRESSPOOLRANGEID")
private int ipAddressPoolrangeId;

@Column(name = "IPADDRESS")
@NotNull
private String ipAddress;

@Column(name = "COUNT")
@NotNull
private int count;

@Column(name = "SERVICEIDENTIFIER")
@NotNull
private String serviceIdentifier;

@Column(name = "USERNAME")
@NotNull
private String userName;

@Column(name = "VERSION")
@NotNull
private int version;

@Column(name = "IPADDRESSVALUE")
@NotNull
private long ipAddressValue;

  //setter/getters

  } // end of Entity

我的存储库界面： -

选择查询连接多个表[3个表]并根据给定的条件提取少量列。

 public interface PoolRepository extends JpaRepository<IPAddressAllocation, String> {

@Query(value = "SELECT r.ipaddresspoolrangeid , r.ipaddresspoolid,  r.ipaddress,"
        + "r.unallocatedcount, r.ipnetmask, r.version, r.ipaddressvalue from ippool_service_assignment s,"
        + "ipaddressPool p, ipaddress_pool_range r where p.customerid = :cidn and "
        + "p.customernetwork = :networkId and s.serviceidentifier =:serviceIdentifier and "
        + "s.ipaddresspoolid = p.ipaddresspoolid and p.ipaddresspoolid = r.ipaddresspoolid and "
        + "((r.ipaddressvalue  <=:firstIpAddress) and "
        + "((r.ipaddressvalue + power(2, 32-(r.ipnetmask))-1) >=:firstIpAddress)"
        + " or ( r.ipaddressvalue   <=:lastIpAddress ) and "
        + "((r.ipaddressvalue + power(2, 32-(r.ipnetmask))-1) >=:firstIpAddress ))"
        + " Order by p.poolname, r.ipaddressvalue", nativeQuery = true)
List<IPAddressPoolAllocations> fetchIpPoolDetails(@Param("cidn") final String cidn,
        @Param("networkId") final String networkId, @Param("serviceIdentifier") final String serviceIdentifier,
        @Param("firstIpAddress") final long firstIpAddress, @Param("lastIpAddress") final long lastIpAddress);

static interface IPAddressPoolAllocations {
    int getIpAddressPoolrangeId();
    int getIpaddresspoolid();
    String getIpAddress();
    String getUnallocatedcount();
    String getIpnetmask();
    int getVersion();
    long getIpAddressValue();
     }
  } //end of interface repository

我的ServiceImpl图层： -

@Autowired
private PoolRepository repository;  

List<IPAddressPoolAllocations> ipAddressPoolAllocationList = repository.fetchIpPoolDetails(
                    String.valueOf(ipAllocation.getCidn()), ipAllocation.getCustomerNetworkId(), ipAllocation.getServiceIdentifier(), Long.parseLong(sfirstIpAddress),
                    Long.parseLong(slastIpAddress));

不确定我在这里做错了什么。

Spring数据JPA + MySQL错误无法从类型[java.lang.Object []]转换为类型

0 个答案: