易买网的一些增删改查
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易买网的一些增删改查
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???? 正如題目所說的一樣,今天就來說說易買網(wǎng)中的一些增刪改查,主要的功能有注冊(cè)、用戶管理以及商品分類等！
???? 1.注冊(cè)
?????1.1 注冊(cè)涉及到了一個(gè)ajax遠(yuǎn)端技術(shù),主要是用來控制注冊(cè)用戶在數(shù)據(jù)庫(kù)中是否存在：
<script>$(function(){//焦點(diǎn)移出表單時(shí)$("#userId").blur(function(){ajax();});});function ajax(){//獲取用戶名var uname=$("#userId").val();if(uname!=""){$.ajax({url:'<%=path%>/servlet/DuCheckDoc',type:'POST',data:'name='+uname,//data是從servlet回送的內(nèi)容 success:function(data){if(data=="true"){$("#msg").html("不能注冊(cè),該用戶名已存在").addClass("error");}else{$("#msg").html("可以注冊(cè),用戶名尚未被注冊(cè)").addClass("error");} } }); } } </script>
???? 需要發(fā)送到下面這個(gè)servlet去判定是否存在
package servlet;import java.io.IOException; import java.util.List;import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import dao.impl.UserNameImpl_wjl; import entity.User;public class DuCheckDoc extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}//ajax的遠(yuǎn)端控制public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//解決中文亂碼request.setCharacterEncoding("utf-8");//實(shí)現(xiàn)usernameimpl類的對(duì)象UserNameImpl_wjl impl=new UserNameImpl_wjl();String uName=request.getParameter("name");//String uName="admin111";String msg=null;if (uName!=null) {try {List<User> list=impl.getUserName();for (User user : list) {if (uName.equals(user.getUserId())) {msg="true";break;}else {msg="false";}} } catch (Exception e) {// 異常抓取 e.printStackTrace();}}response.getWriter().print(msg);}}
?
? 1.2 注冊(cè)還有一個(gè)自己的servlet
?????
package servlet;import java.io.IOException; import java.text.ParseException; import java.text.SimpleDateFormat; import java.sql.Date;import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import dao.impl.Registerimpl_wjl; import entity.User;public class RegisterServelt_wjl extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//處理亂碼request.setCharacterEncoding("utf-8");Registerimpl_wjl rdao=new Registerimpl_wjl();String userId=request.getParameter("userId");String userName=request.getParameter("userName");String password=request.getParameter("password");//String confirmPassword=request.getParameter("confirmPassword");String sex=request.getParameter("sex");String flag="T";if (sex.equals("male")){flag="F";}String btime=request.getParameter("birthday");//轉(zhuǎn)化為日期SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");Date date = null;try {date=new Date(format.parse(btime).getTime());} catch (ParseException e1) {// TODO Auto-generated catch block e1.printStackTrace();}String identityCode=request.getParameter("identityCode");String email=request.getParameter("email");String mobile=request.getParameter("mobile");String address=request.getParameter("address");User user=new User();user.setAddress(address);user.setUserId(userId);user.setUserName(userName);user.setEmail(email);user.setMale(flag);user.setIdentityCode(identityCode);user.setPassword(password);user.setMobile(mobile);user.setBirthday(date);boolean result=rdao.addRegister(user);if (result) {request.getRequestDispatcher("/reg-result.jsp").forward(request, response);}else{response.sendRedirect("/EasyBuy_H/register.jsp");}}}
?? 注冊(cè)sql語句
public boolean addRegister(User user) {//insert into EASYBUY_USER values//('杰克','普通用戶','ss','T','1983-02-14','130406198302141869',//'hello@bdqn.com','15812345678','北京市海淀區(qū)成府路207號(hào)','1',DEFAULT)String sql="insert into EASYBUY_USER values(?,?,?,?,?,?,?,?,?,?,default)";Object[] paras={user.getUserId(),user.getUserName(),user.getPassword(),user.getMale(),user.getBirthday(),user.getIdentityCode(),user.getEmail(),user.getMobile(),user.getAddress(),user.getStatus()};return executeUpdate(sql, paras);}
?????2.用戶管理
?????2.1 根據(jù)上面的注冊(cè)用戶,新注冊(cè)用戶就會(huì)添加到用戶管理中,
???? 2.2 用戶管理的增刪改查sql語句
//利用分頁進(jìn)行查詢出整個(gè)表public List<User> getAllUser(int pageIndex,int pageSize) throws Exception {List<User> list=new ArrayList<User>();String sql="select top "+pageSize+" * from EASYBUY_USER where identity_ID not in(select top "+(pageIndex-1)*pageSize+" identity_ID from EASYBUY_USER)";ResultSet rs=executeSelect(sql);if (rs!=null) {while(rs.next()){User user=new User();user.setId(rs.getInt("identity_ID"));user.setUserId(rs.getString("EU_USER_ID"));user.setUserName(rs.getString("EU_USER_NAME"));user.setMale(rs.getString("EU_SEX"));user.setEmail(rs.getString("EU_EMAIL"));user.setMobile(rs.getString("EU_MOBILE"));user.setBirthday(rs.getDate("EU_BIRTHDAY"));user.setAddress(rs.getString("EU_ADDRESS"));user.setPassword(rs.getString("EU_PASSWORD"));list.add(user);}}return list;}//按用戶id查詢public List<User> getAllUserToUserId(int id) throws Exception {List<User> list=new ArrayList<User>();String sql="select * from EASYBUY_USER where identity_ID=?";Object[] paras={id};ResultSet rs=executeSelect(sql,paras);if (rs!=null) {while(rs.next()){User user=new User();user.setUserId(rs.getString("EU_USER_ID"));user.setUserName(rs.getString("EU_USER_NAME"));user.setMale(rs.getString("EU_SEX"));user.setEmail(rs.getString("EU_EMAIL"));user.setMobile(rs.getString("EU_MOBILE"));user.setBirthday(rs.getDate("EU_BIRTHDAY"));user.setAddress(rs.getString("EU_ADDRESS"));user.setPassword(rs.getString("EU_PASSWORD"));list.add(user);}}return list;}//修改用戶信息public boolean getAllToUpdate(User user) throws Exception {String sql="update EASYBUY_USER set EU_USER_ID=?,EU_USER_NAME=?,EU_SEX=?,EU_MOBILE=?,EU_ADDRESS=?,EU_PASSWORD=?,EU_BIRTHDAY=? where identity_ID=?";Object[] paras={user.getUserId(),user.getUserName(),user.getMale(),user.getMobile(),user.getAddress(),user.getPassword(),user.getBirthday(),user.getId()};return executeUpdate(sql,paras);}//按用戶編號(hào)刪除用戶public boolean getAllToDelete(int id) {String sql="delete from EASYBUY_USER where identity_ID=?";Object[] paras={id};return executeUpdate(sql, paras);}//總記錄數(shù)public int getAllCount() throws Exception {String sql="select COUNT(1) as num from EASYBUY_USER";ResultSet rs=executeSelect(sql);int result=0;if (rs!=null) {while(rs.next()){result=rs.getInt("num");}}return result;}
??? 2.3 用戶管理的servlet
package servlet;import java.io.IOException; import java.text.DateFormat; import java.util.Date; import java.util.List; import java.util.Locale;import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import util.Page_hyj;import dao.impl.Registerimpl_wjl; import entity.News; import entity.User;public class UpdateUserServlet extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}/*** 修改用戶信息 */public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//處理亂碼request.setCharacterEncoding("utf-8");Registerimpl_wjl impl=new Registerimpl_wjl();String opr=request.getParameter("opr");if (opr.equals("list")) {try{// 開始分頁// 實(shí)例化Page對(duì)象Page_hyj page_hyj = new Page_hyj();// .給定每頁要顯示幾條數(shù)據(jù)int pagesize=3;page_hyj.setPageSize(pagesize);// .給總頁數(shù)賦值int pageSum=0;//總記錄數(shù)int total=impl.getAllCount();if (total%pagesize==0) {pageSum=total/pagesize;}else {pageSum=total/pagesize+1;}page_hyj.setPageCount(pageSum);// 當(dāng)用戶還沒有點(diǎn)擊下一頁是默認(rèn)顯示第一頁數(shù)據(jù)int pageIndex = 1;// 獲取下一頁超鏈接設(shè)置的pageIndex的值String uindex = request.getParameter("pageIndex");if (uindex != null) {// 給page類中的pageIndex賦值：（uindex不為空的時(shí)候就證明了用戶點(diǎn)擊了下一頁，隨之頁面顯示的數(shù)據(jù)也就改變了）pageIndex = Integer.parseInt(uindex);}//判斷是否符合顯示條件if (pageIndex<1) {pageIndex=1;}else if (pageIndex>page_hyj.getPageCount()) {pageIndex=page_hyj.getPageCount();}//當(dāng)前頁數(shù) page_hyj.setPageIndex(pageIndex);// 給集合賦值 page_hyj.setListu(impl.getAllUser(page_hyj.getPageIndex(),page_hyj.getPageSize()));// 設(shè)置作用域request.setAttribute("pageIndex", pageIndex);request.setAttribute("page", page_hyj);request.getRequestDispatcher("/manage/user.jsp").forward(request, response);} catch (Exception e) {// 異常抓取 e.printStackTrace();}} //點(diǎn)擊修改將數(shù)據(jù)加載到用戶修改界面if (opr.equals("update")) {String userid=request.getParameter("id");int id=0;if (!userid.equals("")&&userid!=null) {id=Integer.parseInt(userid);}List<User> listf = null;try {listf = impl.getAllUserToUserId(id);request.setAttribute("id",id);request.setAttribute("listf",listf);} catch (Exception e) {// 異常抓取 e.printStackTrace();}request.getRequestDispatcher("/manage/user-modify.jsp").forward(request, response);}}}
package servlet;import java.io.IOException; import java.text.ParseException; import java.text.SimpleDateFormat; import java.sql.Date;import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import dao.impl.Registerimpl_wjl; import entity.User;public class UpdateUserInfoServlet extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}/*** 修改用戶信息 */public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//處理亂碼request.setCharacterEncoding("utf-8");//調(diào)度 實(shí)例化 對(duì)象Registerimpl_wjl impl=new Registerimpl_wjl();String opr=request.getParameter("opr");//修改if (opr.equals("update")) {String id=request.getParameter("sid");//用戶名String nameid=request.getParameter("userName");//真實(shí)姓名String name=request.getParameter("name");//密碼String passWord=request.getParameter("passWord");//性別String male=request.getParameter("sex");//出生日期String byear=request.getParameter("birthday");//轉(zhuǎn)化為日期SimpleDateFormat sim = new SimpleDateFormat("yyyy-MM-dd");Date date =null;User us=new User();try {date=new Date(sim.parse(byear).getTime());us.setBirthday(date);} catch (ParseException e1) {// 抓取異常 e1.printStackTrace();}//手機(jī)String mobile=request.getParameter("mobile");//地址String address=request.getParameter("address");us.setId(Integer.parseInt(id));us.setUserId(nameid);us.setUserName(name);us.setPassword(passWord);us.setMale(male);us.setMobile(mobile);us.setAddress(address);us.setStatus(1);try {boolean flag=impl.getAllToUpdate(us);if (flag) {//轉(zhuǎn)到更新界面request.getRequestDispatcher("/manage/manage-result.jsp").forward(request, response);}else {//重定向到用戶管理界面在重新選擇response.sendRedirect("/EasyBuy_H/manage/user.jsp");}} catch (Exception e) {// 異常抓取 e.printStackTrace();}}//獲取當(dāng)前頁數(shù)int pageIndex=1;String uindex=request.getParameter("pageIndex");if (uindex!=null) {pageIndex = Integer.parseInt(uindex);}//刪除if (opr.equals("del")) {String userid=request.getParameter("id");int uid=0;if (userid!=null&&!(userid.equals(""))) {uid=Integer.parseInt(userid);}boolean flag=impl.getAllToDelete(uid);if (flag) {//成功轉(zhuǎn)發(fā)request.getRequestDispatcher("/servlet/UpdateUserServlet?opr=list&pageIndex="+pageIndex).forward(request, response); }else{//失敗轉(zhuǎn)發(fā)response.getWriter().print("<script type='text/javascript'>"+ "alert('刪除失敗');"+"location.href='"+request.getContextPath() + "/servlet/UpdateUserServlet?opr=list&pageIndex="+pageIndex+"';"+ "</script>"); }}}}
???? 2.4 在jsp中通過作用域轉(zhuǎn)發(fā)過來的數(shù)據(jù)
?????2.4.1 用戶管理的顯示界面、刪除界面
<div class="main"><h2>用戶管理</h2><div class="manage"><table class="list"><tr><th>用戶名</th><th>真實(shí)姓名</th><th>性別</th><th>Email</th><th>手機(jī)</th><th>操作</th></tr><c:forEach items="${page.listu}" var="item"><tr><td class="first w4 c">${item.userId}</td><td class="w1 c">${item.userName}</td><td class="w2 c"><c:choose><c:when test="${item.male eq 'T'}">男</c:when><c:when test="${item.male eq 'F'}">女</c:when></c:choose></td><td>${item.email}</td><td class="w4 c">${item.mobile}</td><td class="w1 c"><a href="<%=path %>/servlet/UpdateUserServlet?opr=update&id=${item.id}">修改</a> <a id="manageDel" href="<%=path %>/servlet/UpdateUserInfoServlet?id=${item.id}&opr=del&pageIndex=${pageIndex}">刪除</a></td></tr></c:forEach></table></div></div><div class="clear"></div><div class="pager"><ul class="clearfix"> <li><a href="<%=path%>/servlet/UpdateUserServlet?opr=list&pageIndex=1">首頁</a></li><li class="current"><a href="<%=path%>/servlet/UpdateUserServlet?opr=list&pageIndex=${page.pageIndex-1}">上一頁</a></li><li>${page.pageIndex}/${page.pageCount}</li><li class="current"><a href="<%=path%>/servlet/UpdateUserServlet?opr=list&pageIndex=${page.pageIndex+1}">下一頁</a></li><li><a href="<%=path%>/servlet/UpdateUserServlet?opr=list&pageIndex=${page.pageCount}">尾頁</a></li></ul></div></div>
?
???? 2.4.2 修改界面
<form action="<%=path %>/servlet/UpdateUserInfoServlet?opr=update&sid=${id}" method="post"><c:forEach items="${listf}" var="item"><table class="form"><tr><td class="field">用戶名(*)：</td><td><input type="text" class="text" name="userName" value="${item.userId}" readonly="readonly" /></td></tr><tr><td class="field">真實(shí)姓名(*)：</td><td><input type="text" class="text" name="name" value="${item.userName}" /></td></tr><tr><td class="field">登錄密碼(*)：</td><td><input type="text" class="text" name="passWord" value="${item.password}" /></td></tr><tr><td class="field">確認(rèn)密碼(*)：</td><td><input type="text" class="text" name="passWord" value="${item.password}" /></td></tr><tr><td class="field">性別(*)：</td><td><c:choose><c:when test="${item.male eq 'T'}"><input type="radio" name="sex" value="T" checked="checked" />男 <input type="radio" name="sex" value="F" />女</c:when><c:otherwise><input type="radio" name="sex" value="T" />男 <input type="radio" name="sex" value="F" checked="checked"/>女</c:otherwise></c:choose></td> </tr><tr><td class="field">出生日期：</td><td><input id="birthday" class="text" type="text" name="birthday" value="${item.birthday}"/><span></span></td></tr><tr><td class="field">手機(jī)(*)：</td><td><input type="text" class="text" name="mobile" value="${item.mobile}" /></td></tr><tr><td class="field">地址(*)：</td><td><input type="text" class="text" name="address" value="${item.address}" /></td></tr> <tr><td></td><td><label class="ui-blue"><input type="submit" name="submit" value="更新" /></label></td></tr></table></c:forEach></form>
????
?????? 3. 商品分類
??????? 3.1 用于顯示
//解決中文亂碼問題request.setCharacterEncoding("utf-8");//查詢商品分類的對(duì)象ProoductCategoryDaoImpl_hyj impl=new ProoductCategoryDaoImpl_hyj();ProductImpl_wjl dao=new ProductImpl_wjl();String opr=request.getParameter("opr");if (opr.equals("listinfo")) {try {//List<ProductCategory> listfrist=impl.getAllOneLeveInfo(0);List<ProductCategory> listsecond=impl.getAllTowLeveInfo(0);//request.setAttribute("levellist",listfrist);request.setAttribute("levelslist",listsecond);// 開始分頁// 實(shí)例化Page對(duì)象Page_hyj page_hyj = new Page_hyj();// .給定每頁要顯示幾條數(shù)據(jù)int pagesize=1;page_hyj.setPageSize(pagesize);// .給總頁數(shù)賦值int pageSum=0;//總記錄數(shù)int total=dao.getAllCount();if (total%pagesize==0) {pageSum=total/pagesize;}else {pageSum=total/pagesize+1;}page_hyj.setPageCount(pageSum);// 當(dāng)用戶還沒有點(diǎn)擊下一頁是默認(rèn)顯示第一頁數(shù)據(jù)int pageIndex = 1;// 獲取下一頁超鏈接設(shè)置的pageIndex的值String uindex = request.getParameter("pageIndex");if (uindex != null) {// 給page類中的pageIndex賦值：（uindex不為空的時(shí)候就證明了用戶點(diǎn)擊了下一頁，隨之頁面顯示的數(shù)據(jù)也就改變了）pageIndex = Integer.parseInt(uindex);}//判斷是否符合顯示條件if (pageIndex<1) {pageIndex=1;}else if (pageIndex>page_hyj.getPageCount()) {pageIndex=page_hyj.getPageCount();}//當(dāng)前頁數(shù) page_hyj.setPageIndex(pageIndex);// 給集合賦值 page_hyj.setListc(dao.getAllTowLeveInfo(page_hyj.getPageIndex(),page_hyj.getPageSize()));// 設(shè)置作用域request.setAttribute("pageIndex",pageIndex);request.setAttribute("page", page_hyj);request.getRequestDispatcher("/manage/productClass.jsp").forward(request,response);} catch (Exception e) {// TODO Auto-generated catch block e.printStackTrace();}}//修改將數(shù)據(jù)加載到修改頁面if (opr.equals("update")) {String id=request.getParameter("id");String epcid=request.getParameter("epcid");try {List<ProductCategory> listfrist=impl.getAllOneLeveInfo(0);request.setAttribute("levellist",listfrist); request.setAttribute("rid",id);List<ProductCategory> listsecond = impl.getAllTowLeveInfo(0);request.setAttribute("levelslist",listsecond);request.setAttribute("epcid",epcid);request.getRequestDispatcher("/manage/productClass-modify.jsp").forward(request,response);} catch (Exception e) {// TODO Auto-generated catch block e.printStackTrace();}}//新增二級(jí)分類if (opr.equals("add")) {try {List<ProductCategory> listfrist=impl.getAllOneLeveInfo(0);request.setAttribute("levellist",listfrist); request.getRequestDispatcher("/manage/productClass-add.jsp").forward(request,response);} catch (Exception e) {// 錯(cuò)誤異常 e.getMessage();}}
?
??????3.2 返回list泛型的dao方法
??
public List<ProductCategory> getAllTowLeveInfo(int epcid)throws Exception {List<ProductCategory> list=new ArrayList<ProductCategory>();String sql="";ResultSet rs=null;if(epcid==0){sql+="select EPC_ID,EPC_NAME ,EPC_PARENT_ID from EASYBUY_PRODUCT_CATEGORY where EPC_ID!=EPC_PARENT_ID";rs= executeSelect(sql);}else{sql+="select * from EASYBUY_PRODUCT_CATEGORY where EPC_ID=?";Object[] paObjects={epcid};rs= executeSelect(sql,paObjects);}if(rs!=null){while(rs.next()){ProductCategory pc=new ProductCategory();pc.setId(rs.getInt("EPC_ID"));pc.setName(rs.getString("EPC_NAME"));pc.setParentId(rs.getInt("EPC_PARENT_ID"));list.add(pc);}}closeAll();return list;}
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???3.3 ?執(zhí)行具體的修改以及刪除
public class ProductSonServlet extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}/*** 修改單個(gè)選中商品分類*/public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//解決中文亂碼問題request.setCharacterEncoding("utf-8");response.setContentType("text/html; charset=utf-8");//查詢商品分類的對(duì)象ProductImpl_wjl dao=new ProductImpl_wjl();String opr=request.getParameter("opr");//點(diǎn)擊修改 將數(shù)據(jù)加載到商品分類中if (opr.equals("updateName")) {System.out.println(opr);String name=request.getParameter("className"); //獲取商品分類名稱String parentId=request.getParameter("parentId");//一級(jí)分類的選中數(shù)據(jù)//二級(jí)分類String sid=request.getParameter("sid");int parentid=0;if (parentId!=null&&(!parentId.equals(""))){parentid=Integer.parseInt(parentId);}ProductCategory pro=new ProductCategory();pro.setId(Integer.parseInt(sid));pro.setName(name);pro.setParentId(parentid);boolean flag=dao.getProductToEpcid(pro);if (flag) {request.getRequestDispatcher("/manage/manage-result.jsp").forward(request,response);}} //獲取選中條的epcidString id=request.getParameter("epcid");int epcid=0;if (id!=null&&(!id.equals(""))) {epcid=Integer.parseInt(id);}//獲取當(dāng)前頁數(shù)int pageIndex=1;String uindex=request.getParameter("pageIndex");if (uindex != null) {pageIndex = Integer.parseInt(uindex);}//刪除子類if (opr.equals("delete")) {try {int count=dao.getCountTwo(epcid);String name=dao.twoName(epcid);if (count<1) {boolean flag=dao.delProductToEpcid(epcid);if (flag) {request.getRequestDispatcher("/servlet/ProductServletInfo_wjl?opr=listinfo&pageIndex="+pageIndex).forward(request,response);}}else{response.getWriter().print("<script type='text/javascript'>"+ "alert('當(dāng)前"+name+"二級(jí)分類下還有商品,暫時(shí)不能刪除該類');"+"location.href='"+request.getContextPath() + "/servlet/ProductServletInfo_wjl?opr=listinfo&pageIndex="+pageIndex+"';"+ "</script>"); }} catch (Exception e) {// TODO Auto-generated catch block e.printStackTrace();}}//點(diǎn)擊刪除父類if (opr.equals("del")) {try {int count=dao.getHaveSons(epcid);String name=dao.parentName(epcid);if (count>1) {System.out.println(name);response.getWriter().print("<script type='text/javascript'>"+ "alert('當(dāng)前"+name+"分類下還有子類');"+"location.href='"+request.getContextPath() + "/servlet/ProductServletInfo_wjl?opr=listinfo&pageIndex="+pageIndex+"';"+ "</script>"); }else{boolean flag=dao.delAllProduct(epcid);if (flag) {request.getRequestDispatcher("/servlet/ProductServletInfo_wjl?opr=listinfo&pageIndex="+pageIndex).forward(request,response);}}} catch (Exception e) {// TODO Auto-generated catch block e.printStackTrace();}}//新增二級(jí)分類if (opr.equals("addinfo")) {String parentId=request.getParameter("parentId");String className=request.getParameter("className");//一級(jí)分類idint pid=0;//二級(jí)分類idint sid=0;try {if (parentId!=null&&(!parentId.equals(""))) {pid=Integer.parseInt(parentId);}ProductCategory pro=new ProductCategory();pro.setName(className);pro.setParentId(pid);boolean flag=dao.addOneClass(pro);if (pid==0) {System.out.println("新增一級(jí)分類");List<ProductCategory> list=dao.getAllTowLeveInfo();for (ProductCategory item : list) {sid=item.getId();}pro.setId(sid);flag=dao.addParentClass(pro);}if (flag) {request.getRequestDispatcher("/manage/manage-result.jsp").forward(request,response);}} catch (Exception e) {// TODO Auto-generated catch block e.printStackTrace();}}}}
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????? 3.4? jsp界面轉(zhuǎn)發(fā)回來
????? 3.4.1 顯示、刪除的jsp
<div class="main"><h2>分類管理</h2><div class="manage"><table class="list"><tr><th>編號(hào)</th><th>分類名稱</th><th>操作</th></tr><c:forEach items="${page.listc}" var="item"><tr><td class="first w4 c">${item.id}</td><td>${item.name}</td><td class="w1 c"><a href="<%=path %>/servlet/ProductServletInfo_wjl?opr=update&&id=${item.id}&epcid=${item.id}">修改</a><a class="manageDel" href="<%=path %>/servlet/ProductSonServlet?opr=del&epcid=${item.parentId}&pageIndex=${pageIndex}">刪除</a></td></tr><c:forEach items="${levelslist}" var="itemSon"><c:choose><c:when test="${item.parentId eq itemSon.parentId }"><tr><td class="first w4 c">${itemSon.id}</td><td class="childClass">${itemSon.name}</td><td class="w1 c"><a href="<%=path %>/servlet/ProductServletInfo_wjl?opr=update&id=${itemSon.parentId}&epcid=${itemSon.id}">修改</a> <a class="manageDel" href="<%=path %>/servlet/ProductSonServlet?opr=delete&epcid=${itemSon.id}&pageIndex=${pageIndex}">刪除</a></td></tr></c:when></c:choose></c:forEach></c:forEach></table></div><div></div></div><div class="clear"></div><div class="pager"><ul class="clearfix"><li><a href="<%=path%>/servlet/ProductServletInfo_wjl?opr=listinfo&&pageIndex=1">首頁</a></li><li><a href="<%=path%>/servlet/ProductServletInfo_wjl?opr=listinfo&&pageIndex=${page.pageIndex-1}">上一頁</a></li><li>${page.pageIndex}/${page.pageCount}</li><li><a href="<%=path%>/servlet/ProductServletInfo_wjl?opr=listinfo&&pageIndex=${page.pageIndex+1}">下一頁</a></li><li><a href="<%=path%>/servlet/ProductServletInfo_wjl?opr=listinfo&&pageIndex=${page.pageCount}">尾頁</a></li></ul></div></div>
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???? 3.4.2 執(zhí)行修改
<div class="main"><h2>修改分類</h2><div class="manage"><form action="<%=path %>/servlet/ProductSonServlet?opr=updateName&sid=${epcid}" method="post"><table class="form"><tr><td class="field">父分類：</td> <td><select name="parentId"><c:forEach items="${levellist}" var="item"><c:if test="${item.id eq rid}"><option value="${item.id}" selected="selected">${item.name}</option></c:if><c:if test="${item.id != rid}"><option value="${item.id}">${item.name}</option></c:if></c:forEach></select></td></tr><tr><td class="field">分類名稱：</td><c:forEach items="${levellist}" var="item"><c:if test="${item.id eq epcid}"><td><input type="text" class="text" name="className" value="${item.name}" /></td></c:if></c:forEach><c:forEach items="${levelslist}" var="items"><c:if test="${items.parentId eq rid}"><c:if test="${items.id eq epcid}"><td><input type="text" class="text" name="className" value="${items.name}" /></td></c:if></c:if></c:forEach></tr><tr><td></td><td><label class="ui-blue"><input type="submit" name="submit" value="更新" /></label></td></tr></table></form></div></div><div class="clear"></div></div>
?? 3.4.3 執(zhí)行新增的jsp界面
?
<div class="main"><h2>添加分類</h2><div class="manage"><form action="<%=path %>/servlet/ProductSonServlet?opr=addinfo" method="post"><table class="form"><tr><td class="field">父分類：</td><td><select name="parentId"><option value="0" selected="selected">根欄目</option><c:forEach items="${levellist}" var="item"> <option value="${item.parentId}">${item.name}</option></c:forEach></select></td></tr><tr><td class="field">分類名稱：</td><td><input type="text" class="text" name="className" value="" /></td></tr><tr><td></td><td><label class="ui-blue"><input type="submit" name="submit" value="新增" /></label></td></tr></table></form></div></div><div class="clear"></div></div>
?? 好了,功能暫時(shí)就這么多了,如有不足之處,請(qǐng)多多提出你的建議,謝謝。
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轉(zhuǎn)載于:https://www.cnblogs.com/bdpsc/p/5714096.html
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