jsp action中保存和修改的关系

Action中的代码片段

public void setEpid(String epid) {
        this.epid = epid;
}

public String edit() {
        try {
            if ("save".equals(save)) {//点击保存按钮的时候执行
                return save();
            } else {
                loadInfo();
                return RETURN_EDIT;
            }
        } catch (Exception e) {
            super.printErrors(this.getRequest(), e, className);
            return RETURN_ERROR;
        }
}

private void loadInfo() throws Exception {
        epid = this.getRequest().getParameter("id");//得到单个的epid
        Long userid = getLoginUser().getUser().getUserID();
        /**
             功能:
              得到单个对象 并把各个对象 放到VO对象中
              页面中显示数据的值

        **/

        Ep ep = new Ep();
        ep.setId(Long.parseLong(epid));
        ep = epService.getEpById(ep);
        epVO.setEp(ep);
        // depart对象
        Depart depart = new Depart();
        depart.setDeptID(ep.getDeptid());
        depart.setPlateNumber(ep.getName());
        depart.setCreateBy(userid);
        depart.setJudgeType(Integer.parseInt("0"));
        String str[] = ep.getInfo().split(";");
        String s1 = "";
        for (int i = 0; i < str.length; i++) {
            s1 = str[0];
        }

        if ("".equals(s1) || null == s1) {
            depart.setRoute("暂无路线");
        } else {
            depart.setRoute(s1);
        }
        epVO.setDepart(depart);
        // dept对象
        Dept dept = new Dept();
        dept = deptService.getDeptById(ep.getDeptid());
        epVO.setDept(dept);

}

    public String save() {

        Long deptid = epVO.getDept().getDeptid();
        try {
            Depart depart = epVO.getDepart();
            depart.setDeptID(deptid);

            departService.insertDepart(depart);
            super.printMsg(this.getRequest(), "保存成功!");

            cleanObject();
        } catch (Exception e) {
            super.printErrors(this.getRequest(), e, className);
            return RETURN_ERROR;
        }

        return list();
    }
</div>

jap页面

        </