[GitHub] guowdxp commented on issue #1910: blob column insert exception: Unknown exception: INSERT INTO column size mismatch value size

[GitBox <gi...@apache.org>]

guowdxp commented on issue #1910: blob column insert exception: Unknown exception: INSERT INTO column size mismatch value size
URL: https://github.com/apache/incubator-shardingsphere/issues/1910#issuecomment-466351547
 
 
   query blob column no problem。
   
   query java code as follows:
   
       /**
        * blob字段查询测试
        * @param args
        * @throws Exception
        */
       @Test
       public void blobQueryTest() throws Exception {
           Class.forName("com.mysql.jdbc.Driver");
           String sql = "select id,image from images";
           Connection conn = DriverManager.getConnection(url, username, password);
           PreparedStatement ps = conn.prepareStatement(sql);
   
           ResultSet rs = ps.executeQuery(sql);
           if(rs.next()) {
           	Integer id = rs.getInt("id");
           	Blob image = rs.getBlob("image");
           	System.out.println(id);        	
           	InputStream in = image.getBinaryStream();
               OutputStream out = new FileOutputStream("f://3.jpg");
               byte[] buffer = new byte[1024*1024];
               int len = 0;
               int i=0;
               while((len = in.read(buffer)) != -1){
                      out.write(buffer, 0, len);
                      i++;
               }    
               out.close();
               in.close();
           }
           rs.close();
           ps.close();
           conn.close();
       }

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