JSP中SQL数据库编程技术

getDouble()
  DOUBLE                   Double                                          double getDouble()
  BINARY                     byte                                              byte getBytes()
  VARBINARY              byte                                              byte getBytes()
  LONGVARBINARY   byte                                              InputStream getBinaryStream()
  DATE                          java.sql.Date                               java.sql.Date getDate()
  TIME                           java.sql.Time                               java.sql.Time getTime()
  TIMESTAMP              java.sql.Timestamp                   java.sql.Timestamp getTimestamp()
  
3，null
  int i=rs.getInt("age");
  if(!rs.wasNull()).//RecordSet::wasNull()用来检查null
4,存取大字符串和二进制文本
  对于数据库中longvarchar和langvarbinary进行流操作
  ResultSet rs=stmt.executeQueryString("select ");
  BufferedReader br=new Buffe