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java宠物医院管理系统

萌宠菠菠乐园
2024-12-04 16:06

package ph.servlet; import java.io.IOException; import java.util.regex.Matcher; import java.util.regex.Pattern; import javax.servlet.ServletException; import javax.servlet.annotation.MultipartConfig; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.Part; import java.util.List; import ph.dao.PetDAO; import ph.po.Pet; import ph.dao.UserDAO; import ph.po.User; @MultipartConfig @WebServlet("/PetServlet") public class PetServlet extends HttpServlet { private static final long serialVersionUID = 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String m = request.getParameter("m"); if("toAdd".equals(m)) { request.getRequestDispatcher("/petadd.jsp").forward(request, response); } else if("delete".equals(m)) { delete(request, response); } else if("deletePet".equals(m)) { deletePet(request, response); } else if("newPetAdd".equals(m)) { newPetAdd_doGet(request, response); } } //增加宠物的处理逻辑,用于处理点击petSearch.jsp页面的增加宠物超链接后的Get操作，by hlzhang 20180131 private void newPetAdd_doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { UserDAO userDAO = new UserDAO(); List<User> users = userDAO.getAllCustomer(); request.setAttribute("users", users); request.getRequestDispatcher("/newPetAdd.jsp").forward(request, response); } catch (Exception e) { request.setAttribute("msg", e.getMessage()); request.getRequestDispatcher("/petSearch.jsp").forward(request, response); } } //查询宠物的处理逻辑，by hlzhang 20180130 private void searchPet(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException { String petName = request.getParameter("petName"); String ownerName = request.getParameter("ownerName"); try { List<Pet> pets = new PetDAO().search(petName, ownerName); if(0==pets.size()) { request.setAttribute("msg", "没有查到宠物信息"); request.getRequestDispatcher("/petSearch.jsp").forward(request, response); } else { request.setAttribute("pets", pets); request.getRequestDispatcher("/petSearchResult.jsp").forward(request, response); } } catch (Exception e) { request.setAttribute("msg", e.getMessage()); request.getRequestDispatcher("/petSearch.jsp").forward(request, response); } } private void delete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { new PetDAO().delete(Integer.parseInt(request.getParameter("pid"))); request.getRequestDispatcher("/CustomerServlet?id=" + request.getParameter("cid")).forward(request, response); } catch (Exception e) { request.setAttribute("msg", e.getMessage()); request.getRequestDispatcher("/CustomerServlet?id=" + request.getParameter("cid")).forward(request, response); } } //在单独的宠物管理页面执行删除宠物操作 by hlzhang，20180131 private void deletePet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { new PetDAO().delete(Integer.parseInt(request.getParameter("petId"))); request.setAttribute("msg", "成功删除宠物："+request.getParameter("petName")); request.getRequestDispatcher("/petSearch.jsp").forward(request, response); } catch (Exception e) { request.setAttribute("msg", e.getMessage()); request.getRequestDispatcher("/petSearch.jsp").forward(request, response); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //doPost方法会被多个表单调用，查询宠物、增加宠物,因此这里需要根据不同表单传递的标示参数调用不同的方法 String m = request.getParameter("m"); if("search".equals(m)) { searchPet(request, response); } else if("addPet".equals(m)) { addPet(request, response); } else if("newPetAdd".equals(m)) { newPetAdd_doPost(request, response); } } //增加宠物的处理逻辑，by hlzhang 20180130 private void addPet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String name = request.getParameter("name"); if("".equals(name))//宠物姓名不能为空 { request.setAttribute("msg", "请输入宠物姓名"); request.getRequestDispatcher("/petadd.jsp").forward(request, response);//这里可以直接转发到 petadd.jsp return;// petadd.jsp后，函数直接返回，add by hlzhang, 20180122 } Part p = request.getPart("photo"); String oldname = getFileName(p); //这里需要上传文件，就需要得到上传文件的目标路径 //这里的文件保存路径不能是任意路径，只能放到当前应用根目录及其子目录下，才能够通过浏览器访问 //如何得到这个当前应用根目录，一般情况下不能写死路径，应该通过代码动态得到路径 //System.out.println(getRuntimePath());//路径有了差文件名 //如果使用原文件名，可能出现重名文件，若非要使用原文件名，则可以分文件夹或将文件名改为时间毫秒数 String photo="photo/default.jpg"; if(!oldname.equals(""))//如果旧文件名不为空表示用户上传了照片，则需要保存照片，否则可以省略这个步骤 { String type = oldname.substring(oldname.lastIndexOf("."));//xxxx.xx String newname = System.currentTimeMillis() + type; String saveFile = getRuntimePath() + newname; photo = "photo/" + newname; p.write(saveFile);//上传文件 } Pet pet = new Pet(); pet.setName(request.getParameter("name")); pet.setBirthdate(request.getParameter("birthdate")); pet.setOwnerId(Integer.parseInt(request.getParameter("cid"))); pet.setPhoto(photo); try { new PetDAO().save(pet); //response.sendRedirect("CustomerServlet?id="+pet.getOwnerId());//这里使用重定向是因为客户查看页面的对应地址是一个get方式的请求地址,且需要一个id值 response.sendRedirect("CustomerServlet?id="+pet.getOwnerId()+"&mode=savePet");//用一个mode参数，表示是否是save了一个新宠物,by hlzhang } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } //增加宠物的处理逻辑,用于处理newPetAdd.jsp页面的Post提交操作，by hlzhang 20180131 private void newPetAdd_doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String name = request.getParameter("name");