sqlserver日期转换错误：Timestamp format must be yyyymmdd hh:mm:ss[.fffffffff] 东师理想

今天用java开发sqlserver2008数据库时，将结果存入bean时报错Timestamp format must be yyyy-mm-dd hh:mm:ss[.fffffffff]，后来发现，是数据库字段格式不对，日期格式应该使用datetiem，如果实在是用date类型，需要将其结果读取存入map集合中，在java前台通过dateformat转换后存入bean中即可。

如果服务器是CENTOS系统，则服务器的日期格式与数据库sqlserver的日期格式是不对应的，设计数据库时需要将datetime类型改为varchar类型，bean中对应的也需要改为String类型，保存时，将数据通过DataFormat转换

 /*属性 */
    private String ydid;  //编码
    private RsEmployee jgbm;  //人员编码
    private String ydlxbm;  //异动类型编码
    private String ydxq;  //异动学期
    private String ydsj;  //异动时间
    private String ydsm;  //异动说明
    private int lrr;  //录入人
    private String lrsj;  //录入时间
    private int buse;  //是否可用 0：不好用 1：可用
    private int school_id;

public String addSaveRSYd() throws Exception {
        
        //rsEmployeeyd.setYdid(0);
        
        HttpSession session = request.getSession();
        
        int school_id = Integer.parseInt(session.getAttribute("schoolid").toString()); 
        DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        Date now = new Date();
        rsEmployeeyd.setJgbm(rsEmployeeyd.getJgbm());
        rsEmployeeyd.setYdlxbm(rsEmployeeyd.getYdlxbm());
        rsEmployeeyd.setLrsj(format.format(now));
        rsEmployeeyd.setYdsj(format.format(rsEmployeeyd.getYdsj()));
        rsEmployeeyd.setYdsm(rsEmployeeyd.getYdsm());
        rsEmployeeyd.setBuse(1);
        rsEmployeeyd.setSchool_id(school_id);
        rsEmployeeydService.addInfo(rsEmployeeyd);
        
        return SUCCESS;
        
    }