Hibernate-Spatial，JPA，Spring，MySQL 5.7（無法檢索Point）

Question

我正在使用主題中所述的框架。

這是我在application.yml for spring中的jpa屬性的一部分

jpa:
  database: mysql
  hibernate:
    naming:
      physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl 
  properties:
    hibernate:
      dialect: org.hibernate.spatial.dialect.mysql.MySQL56InnoDBSpatialDialect
      globally_quoted_identifiers: true
  show-sql: true

我不確定這是否是觸發SpatialDialect for MySQL5.7的正確方法

我的實體的Point方法

@Type(type = "com.iheartcity.apiapp.geometry.MySQLGeometryType")
@Column(name = "location", nullable = false)
public Point getLocation() {
    return this.location;
}
public void setLocation(Point location) {
    this.location = location;
}

我創建了一個類MySQLGeometryType.java：

package com.iheartcity.apiapp.geometry;

import org.hibernate.spatial.JTSGeometryType;
import org.hibernate.spatial.dialect.mysql.MySQLGeometryTypeDescriptor;

public class MySQLGeometryType extends JTSGeometryType {

    public MySQLGeometryType() {
        super(MySQLGeometryTypeDescriptor.INSTANCE);
    }
}

使用@Type（type =“com.iheartcity.apiapp.geometry.MySQLGeometryType”）

它完美地運作。 但是，當我評論它時，我在運行代碼以檢索數據時開始出錯。

這是一個例外：

java.io.StreamCorruptedException: invalid stream header: 00000000
    at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:808) ~[na:1.8.0_111]
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:301) ~[na:1.8.0_111]
at org.hibernate.internal.util.SerializationHelper$CustomObjectInputStream.<init>(SerializationHelper.java:309) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.internal.util.SerializationHelper$CustomObjectInputStream.<init>(SerializationHelper.java:299) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.internal.util.SerializationHelper.doDeserialize(SerializationHelper.java:218) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.internal.util.SerializationHelper.deserialize(SerializationHelper.java:287) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.fromBytes(SerializableTypeDescriptor.java:139) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.wrap(SerializableTypeDescriptor.java:114) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.descriptor.java.SerializableTypeDescriptor.wrap(SerializableTypeDescriptor.java:28) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.descriptor.sql.VarbinaryTypeDescriptor$2.doExtract(VarbinaryTypeDescriptor.java:60) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.descriptor.sql.BasicExtractor.extract(BasicExtractor.java:47) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:258) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:254) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:244) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.type.AbstractStandardBasicType.hydrate(AbstractStandardBasicType.java:327) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2775) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1741) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1667) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.getRow(Loader.java:1556) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:740) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.processResultSet(Loader.java:985) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.doQuery(Loader.java:943) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:349) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2615) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2598) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2430) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.Loader.list(Loader.java:2425) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:502) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:371) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1458) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1426) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1398) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]
at org.hibernate.Query.getResultList(Query.java:417) ~[hibernate-core-5.2.2.Final.jar:5.2.2.Final]at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:808) ~[na:1.8.0_111]

Answer 1

實際的解決方案是刪除@Type並使用@Column(name = "location", nullable = false, columnDefinition = "Point")

請注意，這是針對MySQL的

Answer 2

您可以使用com.vividsolutions.jts.geom.Point類，然后您不需要明確地對@Type進行spcify。

在Hibernate用戶指南中查看此示例。