JdbcTemplate - 使用 SQL MERGE 插入或更新 Oracle BLOB
JdbcTemplate - Insert or update Oracle BLOB using SQL MERGE
使用 JdbcTemplate 我想调用 MERGE SQL 语句，它将向 table 插入一条新记录，或者如果具有特定键的行已经存在则进行更新。关键部分是其中一列是Oracle BLOB类型。
这是我到目前为止尝试过的方法：
尝试 1。
Sql 语句：
String sql = ""
+ "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = tmp.thumbnail_image "
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)";
数据库调用：
List<Object[]> x = fileList.stream().map(file -> {
byte[] thumbnail = file.getThumbnail();
SqlLobValue sqlLobValue = new SqlLobValue(new ByteArrayInputStream(thumbnail), thumbnail.length, new DefaultLobHandler());
return new Object[] { file.getFileCId(), file.getType().toString(), sqlLobValue};
}).collect(Collectors.toList());
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB});
异常：
Caused by: org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [MERGE INTO file_thumbnails USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp ON (file_thumbnails.file_c_id = tmp.file_c_id AND file_thumbnails.thumbnail_type = tmp.thumbnail_type) WHEN MATCHED THEN UPDATE SET thumbnail_image = tmp.thumbnail_image ,thumbnail_date = SYSDATE WHEN NOT MATCHED THEN INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)]; SQL state [72000]; error code [1461]; ORA-01461: can bind a LONG value only for insert into a LONG column
; nested exception is java.sql.BatchUpdateException: ORA-01461: can bind a LONG value only for insert into a LONG column
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:649) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:662) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.BatchUpdateUtils.executeBatchUpdate(BatchUpdateUtils.java:32) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:1000) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository.saveThumbnails(EdmsFileRepository.java:61) ~[classes/:na]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$FastClassBySpringCGLIB$$e3d79386.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$EnhancerBySpringCGLIB$f43ba5.saveThumbnails(<generated>) ~[classes/:na]
at cern.edms.thumbnails.generator.Application.run(Application.java:58) [classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
... 6 common frames omitted
Caused by: java.sql.BatchUpdateException: ORA-01461: can bind a LONG value only for insert into a LONG column
at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10401) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:230) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:966) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 21 common frames omitted
尝试 2。
Sql statement:
String sql = ""
+ "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = ? "
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, ?, SYSDATE)";
数据库调用：
List<Object[]> x = fileList.stream().map(file -> {
byte[] thumbnail = file.getThumbnail();
SqlLobValue sqlLobValue = new SqlLobValue(new ByteArrayInputStream(thumbnail), thumbnail.length, new DefaultLobHandler());
SqlLobValue sqlLobValue2 = new SqlLobValue(new ByteArrayInputStream(thumbnail), thumbnail.length, new DefaultLobHandler());
return new Object[] { file.getFileCId(), file.getType().toString(), sqlLobValue, sqlLobValue2 };
}).collect(Collectors.toList());
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB, OracleTypes.BLOB });
异常：
Caused by: org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [MERGE INTO file_thumbnails USING (SELECT ? as file_c_id, ? as thumbnail_type FROM DUAL) tmp ON (file_thumbnails.file_c_id = tmp.file_c_id AND file_thumbnails.thumbnail_type = tmp.thumbnail_type) WHEN MATCHED THEN UPDATE SET thumbnail_image = ? ,thumbnail_date = SYSDATE WHEN NOT MATCHED THEN INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, ?, SYSDATE)]; SQL state [63000]; error code [3106]; ORA-03106: fatal two-task communication protocol error
; nested exception is java.sql.BatchUpdateException: ORA-03106: fatal two-task communication protocol error
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:649) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:662) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.BatchUpdateUtils.executeBatchUpdate(BatchUpdateUtils.java:32) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:1000) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository.saveThumbnails(EdmsFileRepository.java:62) ~[classes/:na]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$FastClassBySpringCGLIB$$e3d79386.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$EnhancerBySpringCGLIB$7b6598.saveThumbnails(<generated>) ~[classes/:na]
at cern.edms.thumbnails.generator.Application.run(Application.java:58) [classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
... 6 common frames omitted
Caused by: java.sql.BatchUpdateException: ORA-03106: fatal two-task communication protocol error
at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10401) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:230) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:966) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 21 common frames omitted
补充说明。
在数据库调用的第二次尝试中，我无法使用相同的 SqlLobValue 对象两次，因为我遇到异常：
原因：java.sql.SQLException：重复的流参数：4
如果我要进行第二次尝试，但只将 BLOB 输入参数放入一次（例如，仅放入 MERGE 语句的 INSERT 部分），它会正常工作。但当然这并不能解决我的问题。
你能帮忙吗？
我不是真正的 Spring 框架专家，但我可以重现并稍微调试您的问题。它与您传递的 DefaultLobHandler 有关，它似乎被错误地绑定为 LONG 数据类型而不是 BLOB。
这是您上述调用的简化测试用例，批量大小为 1：
String sql = "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = tmp.thumbnail_image "
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)";
byte[] content = Files.readAllBytes(Paths.get("/Users/gvenzl/Downloads/image1.JPG"));
ByteArrayInputStream bin = new ByteArrayInputStream(content);
SqlLobValue sqlLobValue = new SqlLobValue(bin, content.length, new DefaultLobHandler());
List<Object []> x = new ArrayList<Object []>();
x.add(new Object [] { 1, "Test", sqlLobValue});
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB});
System.out.print("Successful!");
我正在读取图像，然后创建一个单项数组并按照与您相同的方式执行并出现错误：
Exception in thread "main" org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [MERGE INTO file_thumbnails USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp ON (file_thumbnails.file_c_id = tmp.file_c_id AND file_thumbnails.thumbnail_type = tmp.thumbnail_type) WHEN MATCHED THEN UPDATE SET thumbnail_image = tmp.thumbnail_image ,thumbnail_date = SYSDATE WHEN NOT MATCHED THEN INSERT (file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) VALUES (tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)]; SQL state [72000]; error code [1461]; ORA-01461: can bind a LONG value only for insert into a LONG column
; nested exception is java.sql.BatchUpdateException: ORA-01461: can bind a LONG value only for insert into a LONG column
现在我将 LOB 处理程序从 DefaultLobHandler 更改为已弃用的 OracleLobHandler:
byte[] content = Files.readAllBytes(Paths.get("/Users/gvenzl/Downloads/image1.JPG"));
ByteArrayInputStream bin = new ByteArrayInputStream(content);
SqlLobValue sqlLobValue = new SqlLobValue(bin, content.length, new OracleLobHandler());
List<Object []> x = new ArrayList<Object []>();
x.add(new Object [] { 1, "Test", sqlLobValue});
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB});
System.out.print("Successful!");
我的出局是：
Successful!
通过它调试，我可以看到的区别是 OracleLobHandler 使用 ps.setBlob() 方法，而 DefaultLobHandler 使用 ps.setBinaryStream() 这似乎导致了变量被绑定为 LONG 而不是 BLOB。希望这对您有所帮助！
感谢@gvenzi 的回答，我解决了这个问题，但决定post我自己的回答，因为我有一些额外的评论。
所以，是的，OracleLobHandler 解决了这个问题。但实际上我们并不是被迫使用deprecated class。在 OracleLobHandler documentation 我找到了
Deprecated. in favor of DefaultLobHandler for the Oracle 10g driver
and higher. Consider using the 10g/11g driver even against an Oracle
9i database! DefaultLobHandler.setCreateTemporaryLob(boolean) is the
direct equivalent of this OracleLobHandler's implementation strategy,
just using standard JDBC 4.0 API. That said, in most cases, regular
DefaultLobHandler setup will work fine as well.
我测试了它并且有效。
但是我在 PreparedStatementSetter 中将 SqlLobValue 与 OracleTypes.BLOB 一起使用时遇到了另一个问题（这里有描述 ClassCastException: SqlLobValue cannot be cast to oracle.sql.BLOB using PreparedStatementSetter）
我的最终工作代码如下：
public void saveThumbnails(List<Thumbnail> fileList) throws SQLException, IOException {
BatchPreparedStatementSetter b = new BatchPreparedStatementSetter() {
@Override
public void setValues(PreparedStatement ps, int i) throws SQLException {
Thumbnail thumbnail = fileList.get(i);
byte[] thumbnailBytes = thumbnail.getThumbnail();
ps.setObject(1, thumbnail.getFileCId(), OracleTypes.NUMBER);
ps.setObject(2, thumbnail.getType().toString(), OracleTypes.VARCHAR);
DefaultLobHandler lobHandler = new DefaultLobHandler();
lobHandler.setCreateTemporaryLob(true);
lobHandler.getLobCreator().setBlobAsBytes(ps, 3, thumbnailBytes);
}
@Override
public int getBatchSize() {
return fileList.size();
}
};
jdbcTemplate.batchUpdate(getSaveThumbnailSql(), b);
}
private String getSaveThumbnailSql() {
// @formatter:off
String sql = ""
+ "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? AS thumbnail_image FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = tmp.thumbnail_image"
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image , SYSDATE)";
//@formatter:on
return sql;
}
使用 JdbcTemplate 我想调用 MERGE SQL 语句，它将向 table 插入一条新记录，或者如果具有特定键的行已经存在则进行更新。关键部分是其中一列是Oracle BLOB类型。
这是我到目前为止尝试过的方法：
尝试 1。
Sql 语句：
String sql = ""
+ "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = tmp.thumbnail_image "
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)";
数据库调用：
List<Object[]> x = fileList.stream().map(file -> {
byte[] thumbnail = file.getThumbnail();
SqlLobValue sqlLobValue = new SqlLobValue(new ByteArrayInputStream(thumbnail), thumbnail.length, new DefaultLobHandler());
return new Object[] { file.getFileCId(), file.getType().toString(), sqlLobValue};
}).collect(Collectors.toList());
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB});
异常：
Caused by: org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [MERGE INTO file_thumbnails USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp ON (file_thumbnails.file_c_id = tmp.file_c_id AND file_thumbnails.thumbnail_type = tmp.thumbnail_type) WHEN MATCHED THEN UPDATE SET thumbnail_image = tmp.thumbnail_image ,thumbnail_date = SYSDATE WHEN NOT MATCHED THEN INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)]; SQL state [72000]; error code [1461]; ORA-01461: can bind a LONG value only for insert into a LONG column
; nested exception is java.sql.BatchUpdateException: ORA-01461: can bind a LONG value only for insert into a LONG column
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:649) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:662) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.BatchUpdateUtils.executeBatchUpdate(BatchUpdateUtils.java:32) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:1000) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository.saveThumbnails(EdmsFileRepository.java:61) ~[classes/:na]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$FastClassBySpringCGLIB$$e3d79386.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$EnhancerBySpringCGLIB$f43ba5.saveThumbnails(<generated>) ~[classes/:na]
at cern.edms.thumbnails.generator.Application.run(Application.java:58) [classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
... 6 common frames omitted
Caused by: java.sql.BatchUpdateException: ORA-01461: can bind a LONG value only for insert into a LONG column
at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10401) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:230) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:966) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 21 common frames omitted
尝试 2。
Sql statement:
String sql = ""
+ "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = ? "
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, ?, SYSDATE)";
数据库调用：
List<Object[]> x = fileList.stream().map(file -> {
byte[] thumbnail = file.getThumbnail();
SqlLobValue sqlLobValue = new SqlLobValue(new ByteArrayInputStream(thumbnail), thumbnail.length, new DefaultLobHandler());
SqlLobValue sqlLobValue2 = new SqlLobValue(new ByteArrayInputStream(thumbnail), thumbnail.length, new DefaultLobHandler());
return new Object[] { file.getFileCId(), file.getType().toString(), sqlLobValue, sqlLobValue2 };
}).collect(Collectors.toList());
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB, OracleTypes.BLOB });
异常：
Caused by: org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [MERGE INTO file_thumbnails USING (SELECT ? as file_c_id, ? as thumbnail_type FROM DUAL) tmp ON (file_thumbnails.file_c_id = tmp.file_c_id AND file_thumbnails.thumbnail_type = tmp.thumbnail_type) WHEN MATCHED THEN UPDATE SET thumbnail_image = ? ,thumbnail_date = SYSDATE WHEN NOT MATCHED THEN INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, ?, SYSDATE)]; SQL state [63000]; error code [3106]; ORA-03106: fatal two-task communication protocol error
; nested exception is java.sql.BatchUpdateException: ORA-03106: fatal two-task communication protocol error
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:649) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:662) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.BatchUpdateUtils.executeBatchUpdate(BatchUpdateUtils.java:32) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:1000) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository.saveThumbnails(EdmsFileRepository.java:62) ~[classes/:na]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$FastClassBySpringCGLIB$$e3d79386.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) ~[spring-aop-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at cern.edms.thumbnails.generator.repository.EdmsFileRepository$$EnhancerBySpringCGLIB$7b6598.saveThumbnails(<generated>) ~[classes/:na]
at cern.edms.thumbnails.generator.Application.run(Application.java:58) [classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
... 6 common frames omitted
Caused by: java.sql.BatchUpdateException: ORA-03106: fatal two-task communication protocol error
at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10401) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:230) ~[ojdbc6-11.2.0.3.0.jar:11.2.0.3.0]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:966) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:950) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633) ~[spring-jdbc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 21 common frames omitted
补充说明。
在数据库调用的第二次尝试中，我无法使用相同的
SqlLobValue对象两次，因为我遇到异常：原因：java.sql.SQLException：重复的流参数：4
如果我要进行第二次尝试，但只将 BLOB 输入参数放入一次（例如，仅放入 MERGE 语句的 INSERT 部分），它会正常工作。但当然这并不能解决我的问题。
你能帮忙吗？
我不是真正的 Spring 框架专家，但我可以重现并稍微调试您的问题。它与您传递的 DefaultLobHandler 有关，它似乎被错误地绑定为 LONG 数据类型而不是 BLOB。
这是您上述调用的简化测试用例，批量大小为 1：
String sql = "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = tmp.thumbnail_image "
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)";
byte[] content = Files.readAllBytes(Paths.get("/Users/gvenzl/Downloads/image1.JPG"));
ByteArrayInputStream bin = new ByteArrayInputStream(content);
SqlLobValue sqlLobValue = new SqlLobValue(bin, content.length, new DefaultLobHandler());
List<Object []> x = new ArrayList<Object []>();
x.add(new Object [] { 1, "Test", sqlLobValue});
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB});
System.out.print("Successful!");
我正在读取图像，然后创建一个单项数组并按照与您相同的方式执行并出现错误：
Exception in thread "main" org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [MERGE INTO file_thumbnails USING (SELECT ? as file_c_id, ? as thumbnail_type, ? as thumbnail_image FROM DUAL) tmp ON (file_thumbnails.file_c_id = tmp.file_c_id AND file_thumbnails.thumbnail_type = tmp.thumbnail_type) WHEN MATCHED THEN UPDATE SET thumbnail_image = tmp.thumbnail_image ,thumbnail_date = SYSDATE WHEN NOT MATCHED THEN INSERT (file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) VALUES (tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image, SYSDATE)]; SQL state [72000]; error code [1461]; ORA-01461: can bind a LONG value only for insert into a LONG column
; nested exception is java.sql.BatchUpdateException: ORA-01461: can bind a LONG value only for insert into a LONG column
现在我将 LOB 处理程序从 DefaultLobHandler 更改为已弃用的 OracleLobHandler:
byte[] content = Files.readAllBytes(Paths.get("/Users/gvenzl/Downloads/image1.JPG"));
ByteArrayInputStream bin = new ByteArrayInputStream(content);
SqlLobValue sqlLobValue = new SqlLobValue(bin, content.length, new OracleLobHandler());
List<Object []> x = new ArrayList<Object []>();
x.add(new Object [] { 1, "Test", sqlLobValue});
jdbcTemplate.batchUpdate(sql, x, new int[] { OracleTypes.NUMBER, OracleTypes.VARCHAR, OracleTypes.BLOB});
System.out.print("Successful!");
我的出局是：
Successful!
通过它调试，我可以看到的区别是 OracleLobHandler 使用 ps.setBlob() 方法，而 DefaultLobHandler 使用 ps.setBinaryStream() 这似乎导致了变量被绑定为 LONG 而不是 BLOB。希望这对您有所帮助！
感谢@gvenzi 的回答，我解决了这个问题，但决定post我自己的回答，因为我有一些额外的评论。
所以，是的，OracleLobHandler 解决了这个问题。但实际上我们并不是被迫使用deprecated class。在 OracleLobHandler documentation 我找到了
Deprecated. in favor of DefaultLobHandler for the Oracle 10g driver and higher. Consider using the 10g/11g driver even against an Oracle 9i database! DefaultLobHandler.setCreateTemporaryLob(boolean) is the direct equivalent of this OracleLobHandler's implementation strategy, just using standard JDBC 4.0 API. That said, in most cases, regular DefaultLobHandler setup will work fine as well.
我测试了它并且有效。
但是我在 PreparedStatementSetter 中将 SqlLobValue 与 OracleTypes.BLOB 一起使用时遇到了另一个问题（这里有描述 ClassCastException: SqlLobValue cannot be cast to oracle.sql.BLOB using PreparedStatementSetter）
我的最终工作代码如下：
public void saveThumbnails(List<Thumbnail> fileList) throws SQLException, IOException {
BatchPreparedStatementSetter b = new BatchPreparedStatementSetter() {
@Override
public void setValues(PreparedStatement ps, int i) throws SQLException {
Thumbnail thumbnail = fileList.get(i);
byte[] thumbnailBytes = thumbnail.getThumbnail();
ps.setObject(1, thumbnail.getFileCId(), OracleTypes.NUMBER);
ps.setObject(2, thumbnail.getType().toString(), OracleTypes.VARCHAR);
DefaultLobHandler lobHandler = new DefaultLobHandler();
lobHandler.setCreateTemporaryLob(true);
lobHandler.getLobCreator().setBlobAsBytes(ps, 3, thumbnailBytes);
}
@Override
public int getBatchSize() {
return fileList.size();
}
};
jdbcTemplate.batchUpdate(getSaveThumbnailSql(), b);
}
private String getSaveThumbnailSql() {
// @formatter:off
String sql = ""
+ "MERGE INTO file_thumbnails "
+ " USING (SELECT ? as file_c_id, ? as thumbnail_type, ? AS thumbnail_image FROM DUAL) tmp "
+ " ON (file_thumbnails.file_c_id = tmp.file_c_id AND "
+ " file_thumbnails.thumbnail_type = tmp.thumbnail_type) "
+ " WHEN MATCHED THEN "
+ " UPDATE "
+ " SET thumbnail_image = tmp.thumbnail_image"
+ " ,thumbnail_date = SYSDATE "
+ " WHEN NOT MATCHED THEN "
+ " INSERT (c_id, file_c_id, thumbnail_type, thumbnail_image, thumbnail_date) "
+ " VALUES (cedar_c_id_seq.nextval, tmp.file_c_id, tmp.thumbnail_type, tmp.thumbnail_image , SYSDATE)";
//@formatter:on
return sql;
}