java – 插入“Krakow”和“Kraków”时的“重复输入…用于键PRIMARY”
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我有一个Entity LocationsCoordinates用于保存具有唯一位置和国家(制作复合主键)的数据库中位置的坐标,其定义如下：
@Entity
@Table(name = "LOCATIONS_COORDINATES")
@IdClass(LocationsCoordinatesPK.class)
public class LocationsCoordinates implements Serializable {
private static final long serialVersionUID = -4580217081464519853L;
@Id
@Column(name = "LOCATION")
String location;
@Id
@Column(name = "COUNTRY")
String country;
@Column(name = "LATITUDE")
Double latitude;
@Column(name = "LONGITUDE")
Double longitude;
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public Double getLatitude() {
return latitude;
}
public void setLatitude(Double latitude) {
this.latitude = latitude;
}
public Double getLongitude() {
return longitude;
}
public void setLongitude(Double longitude) {
this.longitude = longitude;
}
}
–
public class LocationsCoordinatesPK implements Serializable
{
private static final long serialVersionUID = -4675306358956719620L;
String location;
String country;
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
例如,在带有坐标的utf-8字符集的位置的jpa中插入批处理
public class SampleDAO {
protected EntityManager entityManager;
@PersistenceContext
public void setEntityManager(EntityManager entityManager) {
this. entityManager = entityManager;
}
public void saveCoordinates(){
ArrayList<LocationsCoordinates> coordinates = new ArrayList<LocationsCoordinates>();
LocationsCoordinates coordinate = new LocationsCoordinates();
coordinate.setLocation("Krakow");
coordinate.setCountry("Poland");
coordinate.setLatitude(25.25817);
coordinate.setLongitude(55.30472);
coordinates.add(coordinate);
coordinate = new LocationsCoordinates();
coordinate.setLocation("Kraków");
coordinate.setCountry("Poland");
coordinate.setLatitude(25.25817);
coordinate.setLongitude(55.30472);
coordinates.add(coordinate);
save(coordinates);
}
@Transactional
public <LocationsCoordinates> List<LocationsCoordinates > save(List<LocationsCoordinates > list) {
List<LocationsCoordinates > returnList = new ArrayList<LocationsCoordinates >();
for(LocationsCoordinates ob : list){
returnList.add(entityManager.merge(ob));
}
return returnList;
}
}
}
在调用save函数时,我收到以下异常
2013-10-09 19:42:41,892 [ERROR ][pool-1-thread-1] JDBCExceptionReporter - Duplicate entry 'Poland-Krak?3w' for key 'PRIMARY'
2013-10-09 19:42:41,984 [ERROR ][pool-1-thread-1] TaskUtils$LoggingErrorHandler - Unexpected error occurred in scheduled task.
org.springframework.dao.DataIntegrityViolationException: could not insert: [com.reppify.core.dto.LocationsCoordinates]; SQL [insert into LOCATIONS_COORDINATES (LATITUDE, LONGITUDE, COUNTRY, LOCATION) values (?, ?, ?, ?)]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not insert: [com.reppify.core.dto.LocationsCoordinates]
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:643)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:104)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:516)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:392)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy28.save(Unknown Source)
at com.reppify.accenture.scoring.ScoreConnections.scoreConnections(ScoreConnections.java:308)
at com.reppify.parser.job.accenture.JobLoader.synchronizeJob(JobLoader.java:155)
at com.reppify.parser.job.accenture.JobLoader.startJobLoader(JobLoader.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:64)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.exception.ConstraintViolationException: could not insert: [com.reppify.core.dto.LocationsCoordinates]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:96)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2454)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2874)
at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:79)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:184)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:76)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:512)
... 25 more
Caused by: java.sql.BatchUpdateException: Duplicate entry 'Poland-Krak?3w' for key 'PRIMARY'
at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2024)
at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1449)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
at org.hibernate.jdbc.BatchingBatcher.addToBatch(BatchingBatcher.java:56)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2434)
... 37 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'Poland-Krak?3w' for key 'PRIMARY'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
at com.mysql.jdbc.Util.getInstance(Util.java:382)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1039)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3603)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3535)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1989)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2150)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2626)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2119)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2415)
at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1976)
... 41 more
由于“Krakow”和“Kraków”是不同的字符串值,因此这些不被认为是重复的,但正如我们在异常中看到的那样,它们被视为相同的值.请帮忙.
解决方法:
尝试使用utf8_general_ciutf8_bin作为MySQL中列的排序规则.
这似乎不是Java问题,而是MySQL问题.
了解有关排序规则here的更多信息
这是正确的CREATE TABLE
CREATE TABLE `locations_coordinates` (
`COUNTRY` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '',
`LOCATION` varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT '',
`LATITUDE` double DEFAULT NULL,
`LONGITUDE` double DEFAULT NULL,
PRIMARY KEY (`COUNTRY`,`LOCATION`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
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