类型转换

 

 

  //由clob类型转换为String类型

            String content = null;
            Clob clob = (Clob) map.get("DOCCONTENT");
            Reader rd = clob.getCharacterStream();
            char [] str = new char[12];
            while(rd.read(str) != -1) {
                System.out.print(str);
                content += str;

            }

 //由日期的string转换为long

 
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
            Date date = dateFormat.parse((String) map.get("DOCPUBTIME"));
            Long publishTime = date.getTime();//发布时间