前台传来的文件通过流stream转成bytes 再把文件写入数据库 类型是blob

//获取前台传来的文件
HttpFileCollection files = HttpContext.Current.Request.Files;
Stream st = files[0].InputStream;
byte[] bytes = new byte[st.Length];
st.Read(bytes, 0, bytes.Length);
st.Close();

string sql = "insert into jhac_tb_product_fj (JID,PDC_CODE,PDC_FJ) values (:JID,:PDC_CODE,:PDC_FJ)";
OracleParameter[] parameters = {
new OracleParameter(":JID", OracleType.VarChar,400),
new OracleParameter(":PDC_CODE", OracleType.VarChar,400),
new OracleParameter(":PDC_FJ", OracleType.Blob)
};
parameters[0].Value = "111";
parameters[1].Value = "222";
parameters[2].Value = blob;
DbHelperOra.ExecuteSql(sql, parameters);