| package net.qysoft; |
|
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.sql.Blob; |
| import java.sql.Connection; |
| import java.sql.SQLException; |
|
|
| /** |
| *
java 涓Blob鏁版嵁鐨勬搷浣滄暟鎹簱鐨勫垱寤轟唬鐮? |
|
| * (1)db2 => create table blobTest (
id int not null generated always as identity, image blob ) |
|
| *娣誨姞鐢ㄦ埛java,瀵嗙爜java |
|
| *
(2) db2=>! net |
| *
user java java /add java鍒嗛厤鏉冮檺 |
|
| *(3)db2 => grant
select,insert,update,delete on |
| *
table weihuachao.blobTest to user java |
| * |
| * |
| *
@author weihuachao |
| *
浠ヤ笅浠ｇ爜鍦╩icrosoft 2003 緋葷粺,DB2 9.0涓祴璇曟垚鍔? |
| * |
| */ |
|
| //綾葷殑瀹氫箟寮濮?----------------------------------------------------------- |
|
| public class Test { |
|
| public static void main(String[] args)
throws Exception { |
|
|
Test test = new Test(); |
|
Connection conn = test.createConnection(); |
|
|
|
// Blob瀵硅薄鐨勬彃鍏ョ殑鏂規(guī)硶: |
|
try { |
|
|
|
// 鍒涘緩鎻掑叆璇彞. |
|
java.sql.PreparedStatement preparedStatement = conn |
|
.prepareStatement("insert into
weihuachao.blobTest(image)values(?)"); |
|
|
|
//鍒涘緩鏂囦歡瀵硅薄: |
| |
|
File file=new File("c:/a.jpg"); |
|
|
|
// 鍒涘緩嫻佸璞? |
|
java.io.BufferedInputStream imageInput = new
java.io.BufferedInputStream( |
|
new java.io.FileInputStream(file)); |
|
|
|
//鍙傛暟璧嬪? |
|
preparedStatement.setBinaryStream(1, imageInput,(int) file.length()); |
|
|
|
//鎵ц璇彞 |
|
preparedStatement.executeUpdate(); |
| |
| |
| |
|
//------------------------------------------------------------------ |
|
//Blob鐨勮鍙栧伐浣? |
|
|
|
java.sql.Statement st=conn.createStatement(); |
|
|
|
java.sql.ResultSet rs=st.executeQuery("select image from
weihuachao.blobTest"); |
|
|
|
while(rs.next()) |
|
{ |
|
//璇誨彇Blob瀵硅薄 |
|
Blob blob= (Blob) rs.getBlob(1); |
|
|
|
//Blob瀵硅薄杞寲涓篒nputStream嫻?/td>
|
|
java.io.InputStream inputStream =blob.getBinaryStream(); |
|
|
|
//瑕佸啓鍏ョ殑鏂囦歡 |
|
File fileOutput = new File("c:/backa.jpg"); |
|
|
|
//鏂囦歡鐨勫啓鍏ユ祦鐨勫畾涔?/td>
|
|
FileOutputStream fo = new FileOutputStream(fileOutput); |
|
|
|
int c; |
|
//璇誨彇嫻佸茍鍐欏叆鍒版枃浠朵腑 |
|
while ((c = inputStream.read()) != -1) |
|
fo.write(c); |
|
|
|
//嫻佺殑鍏抽棴: |
|
fo.close(); |
|
|
} |
|
|
} catch (SQLException e) { |
|
|
|
// TODO 鑷姩鐢熸垚 catch 鍧?/td>
|
|
e.printStackTrace(); |
|
}catch(java.io.FileNotFoundException ex) |
| |
|
{ |
| |
|
ex.printStackTrace(); |
|
}catch(java.io.IOException ex) |
|
{ |
| |
|
ex.printStackTrace(); |
|
} |
|
finally |
|
{ |
|
try { |
|
conn.close(); |
|
} catch (SQLException e) { |
|
|
|
// TODO 鑷姩鐢熸垚 catch 鍧?/td>
|
|
e.printStackTrace(); |
|
} |
| |
|
} |
|
| } |
|
| /** |
|
* 瀹氫箟鏁版嵁搴撹繛鎺ョ殑鏂規(guī)硶 |
|
* |
|
* @return |
|
*/ |
| private Connection createConnection() { |
|
Connection conn = null; |
|
try { |
|
|
|
Class.forName("COM.ibm.db2.jdbc.app.DB2Driver"); |
|
|
conn =
java.sql.DriverManager.getConnection("jdbc:db2:sample", |
|
"java", "java"); |
|
|
|
} catch (SQLException ex1) { |
|
ex1.printStackTrace(); |
|
|
|
} catch (ClassNotFoundException ex) { |
|
ex.printStackTrace(); |
|
} |
|
return conn; |
| } |
|
| }//緇撴潫. |
|
| |
|
| 鎬葷粨: JAVA
瀵笵B2涓殑BLOB瀵硅薄鐨勬搷浣?涓昏鏄嬌鐢ㄦ祦鐨勬妧鏈疄鐜?瀵笲LOB鐨勫疄鐜頒富瑕佹楠ゆ湁: |
|
| (1)瀹氫箟瑕佸啓鍏ョ殑鏂囦歡 File file=new File("c:/a.jpg"); |
|
| (2)瀹氫箟鏂囦歡鐨勫啓鍏ユ祦 |
|
|
java.io.BufferedInputStream imageInput = new
java.io.BufferedInputStream( |
|
new java.io.FileInputStream(file)); |
|
| (3)浣跨敤鍑芥暟鍐欏叆: |
|
|
preparedStatement.setBinaryStream(1, imageInput,(int) file.length()); |
|
| (4)鎵цSQL璇彞: |
|
| 瀵笲LOB鐨勮鍙栭噰鍙栫殑姝ラ鏈? |
|
| (1)璇誨彇Blob鐨勫璞? Blob blob= (Blob) rs.getBlob(1); |
|
| (2)鎶夿lob鐨勫璞¤漿鍖栦負(fù)嫻? |
|
|
java.io.InputStream inputStream =blob.getBinaryStream(); |
| (3)瀹氫箟瑕佸啓鍏ョ殑鏂囦歡 |
|
File fileOutput = new File("c:/backa.jpg"); |
| (4)鏂囦歡鐨勫啓鍏ユ祦鐨勫畾涔?/td>
|
|
FileOutputStream fo = new FileOutputStream(fileOutput); |
|
| (5)鍐欏叆鏂囦歡(嫻佺殑鍐欏叆鎶鏈?灝變笉澶氳浜? |
|
int c; |
|
while ((c = inputStream.read()) != -1) |
|
|
{ |
|
fo.write(c); |
|
|
} |
|
//END |
|