import oracle.jdbc.driver.OracleResultSet;
import oracle.sql.BLOB;
BLOB blob = ((OracleResultSet)rs).getBLOB(1);
long size = blob .length();
byte[] buf = blob .getBytes(1L,(int)size);
import oracle.sql.BLOB;
BLOB blob = ((OracleResultSet)rs).getBLOB(1);
long size = blob .length();
byte[] buf = blob .getBytes(1L,(int)size);
可以在获取长度前先判断blob是否为null