JDBC를 이용해서 BLOB COLUMN 에 파일 INSERT하는 SAMPLE

Question

제품 : JAVA
작성날짜 : 2003-01-15
JDBC를 이용해서 BLOB COLUMN 에 파일 INSERT하는 SAMPLE
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Purpose
JDBC를 이용해서 BLOB COLUMN 에 파일 INSERT하는 방법을
알아 봅니다.
Explanation
- 다음 sample은 Oracle DB v8.1.7에서 JDBC(V8.1.7)을
이용해서 TEST한 것입니다.
Example
import java.sql.*;
import java.io.*;
import java.util.*;
import oracle.jdbc.driver.*;
//needed for new CLOB and BLOB classes
import oracle.sql.*;
public class Insert_File_BLOB
public static void main (String args [])
throws Exception
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn =
DriverManager.getConnection ("jdbc:oracle:oci8:@krint-7", "scott", "tiger");
conn.setAutoCommit (false);
Statement stmt = conn.createStatement ();
// Drop the basic_lob_table
try
stmt.execute ("drop table basic_lob_table");
catch (SQLException e)
// An exception could be raised here if the table did not exist already
// but we gleefully ignore it
// Create a table containing a BLOB and a CLOB
stmt.execute ("create table basic_lob_table (x varchar2 (30), b blob, c clob)");
// Populate the table
stmt.execute ("insert into basic_lob_table values ('one',empty_blob(), 'clob column data !!!')");
// Select the lobs
OracleResultSet rset = (OracleResultSet)stmt.executeQuery("select b from basic_lob_table where x='one' for update");
while (rset.next ())
// Get the lobs
BLOB blob = ((OracleResultSet)rset).getBLOB (1);
          try
File file = new File("c:\\temp\\bokim.txt");
long fileLength = (long) file.length();
System.out.println("File Size : " + fileLength + " bytes");
FileInputStream instream = new FileInputStream(file);
OutputStream outstream = blob.getBinaryOutputStream();
int size = blob.getBufferSize();
System.out.println("BufferSize: " + size + " bytes (#)\n");
byte[] buffer = new byte[size];
int length = -1;
while ((length = instream.read(buffer)) != -1)
outstream.write(buffer, 0, length);
System.out.print("#");
System.out.println();
instream.close();
outstream.close();
System.out.println("\nUpdate Done.");
catch (java.io.FileNotFoundException fe) {
System.err.println ("thrown: java.io.FileNotFoundException\n");
fe.printStackTrace ();
System.err.println (fe.getMessage ());
stmt.close();
conn.commit();
conn.close();
결과
SQL> select dbms_lob.getlength(b) from basic_lob_table;
no rows selected
SQL> /
DBMS_LOB.GETLENGTH(B)
4328
Reference Documment
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Answer 1