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  • SQL Server 对 Image字段进行操作

    将图片写入数据库

     public void testUploadPicture() {
        String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";   
       String url = "jdbc:sqlserver://192.168.0.108:1433;databasename=music";   
       String user = "sa";   
       String password = "mmiku";   
       try {   
         Class.forName(driver);   
       } catch (ClassNotFoundException e) {   
         System.out.println("ClassNotFoundException   ->" + e);   
       }   
       try {   
         Connection conn = DriverManager.getConnection(url, user, password);   


      PreparedStatement ps = conn   
               .prepareStatement("update webdb_prod_song set song_picture=? where song_id=12313");   
         //  ps.setString(1, "123.jpg");   
           InputStream input = new FileInputStream("D:\\123.jpg");  
           
           ps.setBinaryStream(1, input, input.available());   
           ps.executeUpdate();
           ps.close();
           
        // 取出图片
           ps = conn   
               .prepareStatement("select   *   from     webdb_prod_song   where   song_id   =   ?");   
           ps.setString(1, "12313");   
           ResultSet rs = ps.executeQuery();   
           rs.next();   
           InputStream in = rs.getBinaryStream("song_picture"); 
           System.out.println(in.available());   
           FileOutputStream out = new FileOutputStream("D:\\12.jpg");   
           byte[] b = new byte[1024];   
           int len = 0;   
           while ((len = in.read(b)) != -1) {   
             out.write(b, 0, len);   
             out.flush();   
           }   
           out.close();   
           in.close();   
           rs.close();   
           ps.close();   
    } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    } catch (SQLException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    }
        }

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  • 原文地址:https://www.cnblogs.com/anee/p/2675888.html
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