Java EclipseLink MySQLSyntaxErrorException可以'；我找不到错误
我有一个这样运行的代码：Java EclipseLink MySQLSyntaxErrorException可以'；我找不到错误,java,mysql,jpa,eclipselink,Java,Mysql,Jpa,Eclipselink,我有一个这样运行的代码： S3Logs s3Logs = new S3Logs(); s3Logs.setBucketOwner(a.getBucketOwner()); s3Logs.setBucket(a.getBucket()); s3Logs.setTime(a.getTime().toString());
S3Logs s3Logs = new S3Logs();
s3Logs.setBucketOwner(a.getBucketOwner());
s3Logs.setBucket(a.getBucket());
s3Logs.setTime(a.getTime().toString());
s3Logs.setRemoteIpAddress(a.getRemoteIpAddress());
s3Logs.setRequester(a.getRequester());
s3Logs.setRequestId(a.getRequestId());
s3Logs.setOperation(a.getOperation());
s3Logs.setKey(a.getKey());
s3Logs.setRequestUri(a.getRequestUri());
s3Logs.setHttpStatus(a.getHttpStatus());
s3Logs.setErrorCode(a.getErrorCode());
s3Logs.setBytesSent(a.getBytesSent());
s3Logs.setObjectSize(a.getObjectSize());
s3Logs.setTotalTime(a.getTotalTime());
s3Logs.setTurnAroundTime(a.getTurnAroundTime());
if(a.getReferrer() == "-"){
s3Logs.setReferrer(null);
}else{
s3Logs.setReferrer(a.getReferrer());}
if(a.getUserAgent().contains(",")){
String s = a.getUserAgent().replace(",", "");
s3Logs.setUserAgent(s);
}else{
s3Logs.setUserAgent(a.getUserAgent());
}
s3Logs.setVersionId(a.getVersionId());
LogsDAO.em.persist(s3Logs);
LogsDAO.em.getTransaction().commit();
private String operation;
@Column(name="`key`")
private String key;
private String requestUri;
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'KEY, OBJECTSIZE, OPERATION, REFERRER, REMOTEIPADDRESS, REQUESTID, REQUESTURI, RE' at line 1
Error Code: 1064
Call: INSERT INTO S3LOGS (BUCKET, BUCKETOWNER, BYTESSENT, ERRORCODE, EXTRAS, HTTPSTATUS, KEY, OBJECTSIZE, OPERATION, REFERRER, REMOTEIPADDRESS, REQUESTID, REQUESTURI, REQUESTER, TIME, TOTALTIME, TURNAROUNDTIME, USERAGENT, VERSIONID) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
bind => [seminar2017, 5abc648552c5f, 0, null, null, 200, null, 0, REST.PUT.LOGGING_STATUS, -, 10.0.0.100, C785888F31E34747, PUT /seminar2017?logging= HTTP/1.1, 5abc648552c5f, 2017-05-10T15:42:40.000Z, 198, 0, aws-internal/3 S3Console/0.4, null]
Query: InsertObjectQuery(de.logsparsing.S3Logs@74ea2410)
Exception in thread "main" javax.persistence.RollbackException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.6.4.v20160829-44060b6): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'KEY, OBJECTSIZE, OPERATION, REFERRER, REMOTEIPADDRESS, REQUESTID, REQUESTURI, RE' at line 1
Error Code: 1064
Call: INSERT INTO S3LOGS (BUCKET, BUCKETOWNER, BYTESSENT, ERRORCODE, EXTRAS, HTTPSTATUS, KEY, OBJECTSIZE, OPERATION, REFERRER, REMOTEIPADDRESS, REQUESTID, REQUESTURI, REQUESTER, TIME, TOTALTIME, TURNAROUNDTIME, USERAGENT, VERSIONID) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
bind => [cpabecloudseminar2017, 5abc648552c5f, 0, null, null, 200, null, 0, REST.PUT.LOGGING_STATUS, -, 54.239.6.71, C785888F31E34747, PUT /seminar2017?logging= HTTP/1.1, 5abc648552c5f, 2017-05-10T15:42:40.000Z, 198, 0, aws-internal/3 S3Console/0.4, null]
Query: InsertObjectQuery(de.logsparsing.S3Logs@74ea2410)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:159)
at de.awsmonitor.AWSLogsMapper.main(AWSLogsMapper.java:176)
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.6.4.v20160829-44060b6): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'KEY, OBJECTSIZE, OPERATION, REFERRER, REMOTEIPADDRESS, REQUESTID, REQUESTURI, RE' at line 1
Error Code: 1064
Call: INSERT INTO S3LOGS (BUCKET, BUCKETOWNER, BYTESSENT, ERRORCODE, EXTRAS, HTTPSTATUS, KEY, OBJECTSIZE, OPERATION, REFERRER, REMOTEIPADDRESS, REQUESTID, REQUESTURI, REQUESTER, TIME, TOTALTIME, TURNAROUNDTIME, USERAGENT, VERSIONID) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
bind => [seminar2017, 5abc648552c5f291cc61eb5cbcb347c3074ed816d2a8bd140e598b3e30595338, 0, null, null, 200, null, 0, REST.PUT.LOGGING_STATUS, -, 10.0.0.100, C785888F31E34747, PUT /seminar2017?logging= HTTP/1.1, 5abc648552c5f291cc61eb5cbcb347c3074ed816d2a8bd140e598b3e30595338, 2017-05-10T15:42:40.000Z, 198, 0, aws-internal/3 S3Console/0.4, null]
Query: InsertObjectQuery(de.logsparsing.S3Logs@74ea2410)
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:331)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:902)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:964)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:633)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:560)
at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:2056)
at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:306)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:242)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:228)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.insertObject(DatasourceCallQueryMechanism.java:377)
at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:165)
at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:180)
at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.insertObjectForWrite(DatabaseQueryMechanism.java:489)
at org.eclipse.persistence.queries.InsertObjectQuery.executeCommit(InsertObjectQuery.java:80)
at org.eclipse.persistence.queries.InsertObjectQuery.executeCommitWithChangeSet(InsertObjectQuery.java:90)
at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.executeWriteWithChangeSet(DatabaseQueryMechanism.java:301)
at org.eclipse.persistence.queries.WriteObjectQuery.executeDatabaseQuery(WriteObjectQuery.java:58)
at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:904)
at org.eclipse.persistence.queries.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:803)
at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWorkObjectLevelModifyQuery(ObjectLevelModifyQuery.java:108)
at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWork(ObjectLevelModifyQuery.java:85)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2896)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1857)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1839)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1790)
at org.eclipse.persistence.internal.sessions.CommitManager.commitNewObjectsForClassWithChangeSet(CommitManager.java:227)
at org.eclipse.persistence.internal.sessions.CommitManager.commitAllObjectsWithChangeSet(CommitManager.java:126)
at org.eclipse.persistence.internal.sessions.AbstractSession.writeAllObjectsWithChangeSet(AbstractSession.java:4264)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabase(UnitOfWorkImpl.java:1441)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1531)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:278)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1169)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:134)
... 1 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'KEY, OBJECTSIZE, OPERATION, REFERRER, REMOTEIPADDRESS, REQUESTID, REQUESTURI, RE' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.Util.getInstance(Util.java:408)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3970)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3906)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2524)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2677)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2549)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)
at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2073)
at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2009)
at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5098)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1994)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:892)
... 32 more
@Entity
public class S3Logs {
public S3Logs() {
}
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE)
public long id;
private String bucketOwner;
private String bucket;
private String time;
private String remoteIpAddress;
private String requester;
private String requestId;
private String operation;
private String key;
private String requestUri;
private int httpStatus;
private String errorCode;
private long bytesSent;
private long objectSize;
private long totalTime;
private long turnAroundTime;
private String referrer;
private String userAgent;
private String versionId;
}
问题 MySQL向您提示了问题所在，如下所示： 错误代码：1064 您的SQL语法有错误；查看与您的MySQL服务器版本对应的手册，了解要使用的正确语法
“第1行的键、对象大小、操作、引用者、REMOTEIPADDRESS、REQUESTID、REQUESTURI、RE”
KEY
是MySQL中的保留字。并且保留字不能用作标识符（例如表名、列名）
若要使用保留字作为标识符（或使用包含无效字符的字符串，如空格），可以通过将标识符包含在反勾号字符中来转义该标识符
例如：
INSERT INTO `mytable` (`mycol`, `key`, ...
^ ^ ^ ^ ^ ^
修复程序
解决此问题的一种快速方法是在源代码中添加一个JPA 2.0指令，以覆盖默认列名，并指定包含在反勾号中的列名，如下所示：
S3Logs s3Logs = new S3Logs();
s3Logs.setBucketOwner(a.getBucketOwner());
s3Logs.setBucket(a.getBucket());
s3Logs.setTime(a.getTime().toString());
s3Logs.setRemoteIpAddress(a.getRemoteIpAddress());
s3Logs.setRequester(a.getRequester());
s3Logs.setRequestId(a.getRequestId());
s3Logs.setOperation(a.getOperation());
s3Logs.setKey(a.getKey());
s3Logs.setRequestUri(a.getRequestUri());
s3Logs.setHttpStatus(a.getHttpStatus());
s3Logs.setErrorCode(a.getErrorCode());
s3Logs.setBytesSent(a.getBytesSent());
s3Logs.setObjectSize(a.getObjectSize());
s3Logs.setTotalTime(a.getTotalTime());
s3Logs.setTurnAroundTime(a.getTurnAroundTime());
if(a.getReferrer() == "-"){
s3Logs.setReferrer(null);
}else{
s3Logs.setReferrer(a.getReferrer());}
if(a.getUserAgent().contains(",")){
String s = a.getUserAgent().replace(",", "");
s3Logs.setUserAgent(s);
}else{
s3Logs.setUserAgent(a.getUserAgent());
}
s3Logs.setVersionId(a.getVersionId());
LogsDAO.em.persist(s3Logs);
LogsDAO.em.getTransaction().commit();
private String operation;
@Column(name="`key`")
private String key;
private String requestUri;
将列名更改为保留字以外的其他名称将是另一个（首选）选择
有些人会（正确地）认为这是一个特定于MySQL的修复程序。（MySQL使用单反勾号，SQL Server使用方括号转义标识符，Oracle使用双引号，等等），因此这个“修复”与数据库的可移植性背道而驰
JPA配置中应该有一些常规设置，有效地表示“转义所有标识符”，这不是特定于数据库的。问题出在哪里
MySQL向您提示了问题所在，如下所示：
错误代码：1064
您的SQL语法有错误；查看与您的MySQL服务器版本对应的手册，了解要使用的正确语法
“第1行的键、对象大小、操作、引用者、REMOTEIPADDRESS、REQUESTID、REQUESTURI、RE”
KEY
是MySQL中的保留字。并且保留字不能用作标识符（例如表名、列名）
若要使用保留字作为标识符（或使用包含无效字符的字符串，如空格），可以通过将标识符包含在反勾号字符中来转义该标识符
例如：
INSERT INTO `mytable` (`mycol`, `key`, ...
^ ^ ^ ^ ^ ^
修复程序
解决此问题的一种快速方法是在源代码中添加一个JPA 2.0指令，以覆盖默认列名，并指定包含在反勾号中的列名，如下所示：
S3Logs s3Logs = new S3Logs();
s3Logs.setBucketOwner(a.getBucketOwner());
s3Logs.setBucket(a.getBucket());
s3Logs.setTime(a.getTime().toString());
s3Logs.setRemoteIpAddress(a.getRemoteIpAddress());
s3Logs.setRequester(a.getRequester());
s3Logs.setRequestId(a.getRequestId());
s3Logs.setOperation(a.getOperation());
s3Logs.setKey(a.getKey());
s3Logs.setRequestUri(a.getRequestUri());
s3Logs.setHttpStatus(a.getHttpStatus());
s3Logs.setErrorCode(a.getErrorCode());
s3Logs.setBytesSent(a.getBytesSent());
s3Logs.setObjectSize(a.getObjectSize());
s3Logs.setTotalTime(a.getTotalTime());
s3Logs.setTurnAroundTime(a.getTurnAroundTime());
if(a.getReferrer() == "-"){
s3Logs.setReferrer(null);
}else{
s3Logs.setReferrer(a.getReferrer());}
if(a.getUserAgent().contains(",")){
String s = a.getUserAgent().replace(",", "");
s3Logs.setUserAgent(s);
}else{
s3Logs.setUserAgent(a.getUserAgent());
}
s3Logs.setVersionId(a.getVersionId());
LogsDAO.em.persist(s3Logs);
LogsDAO.em.getTransaction().commit();
private String operation;
@Column(name="`key`")
private String key;
private String requestUri;
将列名更改为保留字以外的其他名称将是另一个（首选）选择
有些人会（正确地）认为这是一个特定于MySQL的修复程序。（MySQL使用单反勾号，SQL Server使用方括号转义标识符，Oracle使用双引号，等等），因此这个“修复”与数据库的可移植性背道而驰
JPA配置中应该有一些常规设置，有效地表示“转义所有标识符”，这不是特定于数据库的。键是保留字。查询时使用反勾号进行转义，最好避免像保留SQL关键字那样命名数据库中的表/列。或者使用JPA提供程序为您这样做，这样您就不必妥协…键是保留字。查询时使用反勾号进行转义，最好避免像保留SQL关键字那样命名数据库中的表/列。或者使用JPA提供程序为您命名，这样您就不必妥协……JPA规范定义使用@Column（name=“\”key\”）（JPA 2.0，第2.13节）在每个名称的基础上使用分隔符。这将转换为特定于数据库的表示法，使用变通方法可能会导致本机查询出现问题，其中返回的列名可能与列定义不匹配。JPA规范使用@column（name=“\”key\”）（JPA 2.0，第2.13节）定义在每个名称的基础上使用分隔符。这将转换为特定于数据库的表示法，使用变通方法可能会导致本机查询出现问题，其中返回的列名可能与列定义不匹配。