使用ojdbc6.jar
在/META-INF/MANIFEST.MF裡可以看到Specification-Version: 4.0
create sequence seq_blobmodel_id start with 1 increment by 1 nocache; create table blobmodel ( blobid number(10) primary key not null, image blob );
1 /** 2 * 將圖片文件存入數據庫 3 * @throws SQLException 4 * @throws IOException 5 */ 6 public int writeBlob(String path) throws SQLException, IOException{ 7 int result = 0; 8 String sql = "insert into blobmodel(blobid,image) values(seq_blobmodel_id.nextval,?)"; 9 //1.創建Blob 10 Blob image = DBHelper.getConnection().createBlob(); 11 //2.將流放入blob 12 OutputStream out = image.setBinaryStream(1); 13 //3.讀取圖片,並寫入輸出流 14 FileInputStream fis = new FileInputStream(path); 15 byte []buf = new byte[1024]; 16 int len = 0; 17 while((len=fis.read(buf))!=-1){ 18 out.write(buf, 0, len); 19 } 20 result = DBHelper.executeUpdate2(sql, new Object[]{image});//自己簡單封裝了jdbc操作 21 22 fis.close(); 23 out.close(); 24 return result; 25 }
/** * 將數據庫中的圖片文件讀出來 * @throws SQLException * @throws IOException */ public void readBlob() throws SQLException, IOException{ String sql = "select image from blobmodel where blobid=?"; DBHelper.getConnection();// ResultSet rs = DBHelper.executeQuery(sql, new Object[]{1}); while(rs.next()){ Blob image = rs.getBlob(1); InputStream is = image.getBinaryStream(); BufferedInputStream bis = new BufferedInputStream(is); String path = "img/"+new Date().getTime()+".jpg";//指定輸出的目錄為項目下的img文件夾 BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(path)); byte []buf = new byte[1024]; int len = 0; while((len=bis.read(buf))!=-1){ bos.write(buf,0,len); } bos.close(); bis.close(); } }