原因: oracle 11g r2不再支持blob 的getString方法 Oracle JDBC Driver 11g Release 2 (11.2) no longer supports getString method for retrieving BLOB column values 解决方法: Do not use "select *" and select only none-blob type columns in the select statement. (OR) Downgrade Oracle client to 11g R1 其实只要用byte[]映射blob类型即可 pr...
oracle.sql Class BLOB This class implements the java.sql.Blob interface in JDBC 2.0 Field Summary static java.lang.StringBUILD_DATE static intDURATION_CALL static intDURATION_SESSION static intMAX_CHUNK_SIZE 1907584: Changed MAX_CHUNK_SIZE from 32512 to 32768. ...
您将base64图像字符串转换为byte [],如下所示: byte[] decodedByte = Base64.decode(yourBase64String, 0); 之后,你也可以将其转换为位图: Bitmap bitmap = BitmapFactory.decodeByteArray(decodedByte, 0, decodedByte.length); You convert a base64 image string to byte[] like : byte[] deco ... ...
connectString = "jdbc:oracle:thin:@192.168.1.134:1521:zhpt"; conn = (OracleConnection) DriverManager.getConnection(connectString, "dzjc","dzjc"); stmt = conn.createStatement(); } public void sendToDb() { int amount = 0; OutputStream out = null; BufferedInputStream in = null; JFileChooser ...
V2.2.xV2.4.xOceanBase Connector/JHow-to 租户白名单和 OceanBase JDBC 驱动的配置关系 驱动和中间件OceanBase 驱动 本文主要介绍在 OceanBase Connector/J V1.x 和 V2.x 版本对于在使用 F5 场景下, 租户白名单的配置关系。 V2.2.xV2.4.xOceanBase Connector/JTechNote Oracle 模式应用报错 invalid fetch siz...
ps.setBytes(3, baos.toByteArray()); ps.executeUpdate(); in.close(); }catch(Exception e){ e.printStackTrace(); }finally{ JDBCUtils.release(conn, ps,null); } } 4、从Oracle数据库中读取Blob类型的数据并通过IO流写入文件中: publicvoidreadBlobData(){ ...
问在oracle中将blob(image)转换为varcharEN我正在尝试从oracle db读取blob (图像)并将其显示在html中。
问Oracle 10:使用HEXTORAW填充blob数据EN对于 Blob，前端开发中可能比较少遇到；数据库中可使用 Blob 概念...
Defining and Viewing BLOB Data in Oracle Application Express 3.1 Purpose This tutorial shows you how to create a report and form that inserts and views BLOB data in the database using Oracle Application Express 3.1. Time to Complete Approximately 30 minutes Topics This tutorial covers the ...
in the OracleBlob byte[] pattern = new byte[2] {1, 2}; long posFound = blob.Search(pattern, 0, 2); // Prints "posFound = 5" Console.WriteLine("posFound = " + posFound); // Erase 4 bytes of data starting at byte offset 1 // Sets bytes to zero blob.Erase(1, 4); byte...