petinfoservlet.java

网上购物系统

package Control_PetInfo;
import Model_PetInfo.PetInfo;
import Model_PetInfo.PetInfoBean;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.PrintWriter;
import java.io.IOException;

public class PetInfoServlet extends HttpServlet 
{
  private static final String CONTENT_TYPE = "text/html; charset=GB2312";

  public void init(ServletConfig config) throws ServletException
  {
    super.init(config);
  }

  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
  {
    response.setContentType(CONTENT_TYPE);
    this.doPost(request,response);
  }

  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
  {
    response.setContentType(CONTENT_TYPE);
    PrintWriter out = response.getWriter();
    request.setCharacterEncoding("GB2312");
    PetInfoBean pib=new PetInfoBean();
    PetInfo pi=new PetInfo();
    String action=request.getParameter("action");
    if (action!=null)
    {
      if (action.equals("add"))
      {
        pi.setPetID(request.getParameter("PetID"));
        pi.setPetName(request.getParameter("PetName"));
        pi.setTypeID(request.getParameter("TypeID"));
        pi.setPetPhoto(request.getParameter("PetPhoto"));
        pi.setDescriptions(request.getParameter("Descriptions"));
        
        String re=pib.InsertPetInfo(pi);
        if (re.equals("添加成功"))
        {
          response.sendRedirect("PetInfo.jsp");
        }
        else
        {
          response.sendRedirect("Error.jsp");
        }
      }
      else if (action.equals("update"))
      {
        pi.setPetID(request.getParameter("PetID"));
        pi.setPetName(request.getParameter("PetName"));
        pi.setTypeID(request.getParameter("TypeID"));
        pi.setPetPhoto(request.getParameter("PetPhoto"));
        pi.setDescriptions(request.getParameter("Descriptions"));
        
        String re=pib.UpdatePetInfo(pi);
        if (re.equals("修改成功"))
        {
        response.sendRedirect("PetInfo.jsp");
        }
        else
        {
          response.sendRedirect("Error.jsp");
        }
      }
      else if (action.equals("delete"))
      {
        pi.setPetID(request.getParameter("PetID"));
        
        String re=pib.DeletePetInfo(pi.getPetID());
        if (re.equals("删除成功"))
        {
        response.sendRedirect("PetInfo.jsp");
        }
        else
        {
          response.sendRedirect("Error.jsp");
        }
      }
    }
    out.close();
  }
}