银行营业网点管理系统——Servlet包（CityAreaServlet ）

package BranchesMgr.servlet;
/**
 * 城区表的Servlet
 */
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import BranchesMgr.dao.CityAreaDao;
import BranchesMgr.dao.impl.CityAreaDaoImpl;
import BranchesMgr.entity.CityArea;
public class CityAreaServlet extends HttpServlet {
  CityAreaDao citydao=new CityAreaDaoImpl();
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html;charset=utf-8");
    PrintWriter out = response.getWriter();
    request.setCharacterEncoding("utf-8");
    String cityname=request.getParameter("cityname");
      //查询所有的城区
      getAllCity(request,response);
      request.setAttribute("cityname", cityname);
    request.getRequestDispatcher("updateBreaches.jsp").forward(request, response);
  }
  //查询所有
  private void getAllCity(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
    PrintWriter out = response.getWriter();
    List<CityArea>clist=citydao.getCityArea();
    request.setAttribute("clist", clist);
  }
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    doGet(request, response);
  }
}