create sequence seq_blobmodel_id start with 1 increment by 1 nocache;create table blobmodel(blobid number(10) primary key not null,image blob); 將文件寫入數據庫/*** 將圖片文件存入數據庫* @throws SQLException* @throws IOException*/public int writeBlob(String path) throws SQLException, IOException{int result = 0;String sql = "insert into blobmodel(blobid,image) values(seq_blobmodel_id.nextval,?)";//1.創建BlobBlob image = DBHelper.getConnection().createBlob();//2.將流放入blobOutputStream out = image.setBinaryStream(1);//3.讀取圖片,并寫入輸出流FileInputStream fis = new FileInputStream(path);byte []buf = new byte[1024];int len = 0;while((len=fis.read(buf))!=-1){out.write(buf, 0, len);}result = DBHelper.executeUpdate2(sql, new Object[]{image});//自己簡單封裝了jdbc操作fis.close();out.close();return result;}

/*** 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();}}