CRM关系系统一些重点模块的实现

在添加城市页面,其中有下拉菜单,下拉菜单中要加载所有的省:

public ActionForward preadd(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
	throws Exception {
	// TODO Auto-generated method stub
	List pro=ps.browseProvince();
	Vector provinces=new Vector();
	Iterator it=pro.iterator();
	while(it.hasNext()){
		Province p=(Province) it.next();
		String s=String.valueOf(p.getProvinceid());
	                provinces.add(new  LabelValueBean    (p.getProvincename(),s));
	}
	request.setAttribute("provinces",provinces);
	return mapping.findForward("addCity");
	}

 

在修改城市页面,其中同样有省的下拉菜单,需要加载所有的省的信息,同时,还要从后台向前台传数据,在页面上设置默认值:

 

	public ActionForward load(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		// TODO Auto-generated method stub
		
		String id=request.getParameter("id");
		City city=cs.loadCity(Integer.parseInt(id));
		form=new CityForm();
		//向前台页面设置默认值
		((CityForm) form).setcityid(city.getCityid());
		((CityForm) form).setcityCode(city.getCitycode());
		((CityForm) form).setcityName(city.getCityname());
		//form.setProvinceid(city.getProvince().getProvinceid());
		request.setAttribute("cityForm", form);
		List pro=ps.browseProvince();
		Vector provinces=new Vector();
		Iterator it=pro.iterator();
		//加载所有的省的信息
		while(it.hasNext()){
			Province p=(Province) it.next();
			String s=String.valueOf(p.getProvinceid());
			provinces.add(new  LabelValueBean(p.getProvincename(),s));
		}
		request.setAttribute("provinces",provinces);
		request.setAttribute("theprovince",city.getProvince().getProvinceid());
		return mapping.findForward("modifyCity");

	}

在 一个省的某个城市中添加某个人,首先此页面需要加载省的信息,以及市的信息,而且需要实现的是选择省的同时,相应的市会在下拉列表中显示,这就需要容器来实现,容器的嵌套使用,以及尤其要注意的就是容器的初始化:

 

 public ActionForward preadd(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {
  // TODO Auto-generated method stub
  //如何获取市的信息??????????
  //利用的是容器的嵌套
  List pp=new ArrayList();
   pp=ps.browseProvince();
  Vector provinces=new Vector();
  Iterator it=pp.iterator();
  List cityes=new ArrayList();
  Map mapPC=null;
  Map map=null;
  List cityesPC=null;
  //把每个省和城市放在同一个map中,可以实现的是查询省时城市也会自动显示出来
  while(it.hasNext()){
   Province province=(Province) it.next();
   String provinceId=String.valueOf(province.getProvinceid());
   provinces.add(new LabelValueBean(province.getProvincename(),provinceId));
   Iterator iter=province.getCityes().iterator();//遍历一个省份中所有的城市
   mapPC=new HashMap();
   cityesPC=new ArrayList();
   while(iter.hasNext()){
    City city=(City) iter.next();
    
    map=new HashMap();
    String id=String.valueOf(city.getCityid());
    map.put("value",id );
    map.put("label", city.getCityname());
    cityesPC.add(map);//获取每个省相对应的城市
   }
   
   mapPC.put("province", cityesPC);
   cityes.add(mapPC);
  }
  request.setAttribute("provinces",provinces);//给页面发送省的信息
  
  request.setAttribute("citys",cityes);
  
  return new ActionForward("/addClient.jsp");
  
 }

 

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