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简单商城javaweb项目源码，javaweb程序设计任务教程网上蛋糕商城实训前台开发代码

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1，javaweb程序设计任务教程网上蛋糕商城实训前台开发代码很抱歉 ， 我无法直接提供完整的代码，但我可以提供一些关于网上蛋糕商城前台开发的基本思路和代码片段 。首先需要设计数据库，包括蛋糕的种类、价格、图片等信息，并建立相应的数据表 。在Java中使用JDBC连接数据库，并将数据提取到Java对象中 。下面是一个简单的例子：public class Cake private int id;private String name;private double price;private String image;// 构造函数、Getter和Setter方法// 查询数据库中所有蛋糕信息的方法public static List<Cake> getAllCakes() Connection conn = null;Statement stmt = null;ResultSet rs = null;List<Cake> list = new ArrayList<Cake>();try conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/cake_shop?useSSL=false&serverTimezone=UTC", "root", "123456");stmt = conn.createStatement();rs = stmt.executeQuery("SELECT * FROM cake");while (rs.next()) Cake cake = new Cake();cake.setId(rs.getInt("id"));cake.setName(rs.getString("name"));cake.setPrice(rs.getDouble("price"));cake.setImage(rs.getString("image"));list.add(cake);}} catch (SQLException e) e.printStackTrace();} finally try if (rs != null) rs.close();if (stmt != null) stmt.close();if (conn != null) conn.close();} catch (SQLException e) e.printStackTrace();}}return list;}}使用JSP和Servlet编写前端页面，并在Servlet中调用上述方法获取蛋糕信息并传递给前端页面 。下面是一个简单的例子：@WebServlet("/CakeListServlet")public class CakeListServlet extends HttpServlet private static final long serialVersionUID = 1L;protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException List<Cake> cakeList = Cake.getAllCakes();request.setAttribute("cakeList", cakeList);request.getRequestDispatcher("cake_list.jsp").forward(request, response);}protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException doGet(request, response);}}在前端页面中展示蛋糕信息 。下面是一个简单的例子：public class Singleton private static Singleton instance = null;private Singleton() System.out.println("创建Singleton实例");}public static Singleton getInstance() if (instance == null) 【简单商城javaweb项目源码，javaweb程序设计任务教程网上蛋糕商城实训前台开发代码】
2，求一套完整的JAVA WEB项目的网络购物网站源代码123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418/** * @description: * @author chenshiqiang E-mail:csqwyyx@163.com * @date 2014年9月7日 下午2:51:50 * @version 1.0 */package com.example.baidumap; import java.util.ArrayList;import java.util.Collections;import java.util.HashSet;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.support.v4.view.PagerAdapter;import android.support.v4.view.PagerTabStrip;import android.support.v4.view.ViewPager;import android.text.Editable;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ExpandableListView;import android.widget.ListView;import com.baidu.mapapi.map.offline.MKOLSearchRecord;import com.baidu.mapapi.map.offline.MKOLUpdateElement;import com.baidu.mapapi.map.offline.MKOfflineMap;import com.baidu.mapapi.map.offline.MKOfflineMapListener;import com.example.baidumap.adapters.OfflineExpandableListAdapter;import com.example.baidumap.adapters.OfflineMapAdapter;import com.example.baidumap.adapters.OfflineMapManagerAdapter;import com.example.baidumap.interfaces.OnOfflineItemStatusChangeListener;import com.example.baidumap.models.OfflineMapItem;import com.example.baidumap.utils.CsqBackgroundTask;import com.example.baidumap.utils.ToastUtil;import com.example.system.R; public class BaiduOfflineMapActivity extends Activity implements MKOfflineMapListener, OnOfflineItemStatusChangeListener // ------------------------ Constants ------------------------ // ------------------------- Fields -------------------------- private ViewPager viewpager; private PagerTabStrip pagertab; private MySearchView svDown; private ListView lvDown; private MySearchView svAll; private ExpandableListView lvWholeCountry; private ListView lvSearchResult; private List<View> views = new ArrayList<View>(2); private List<String> titles = new ArrayList<String>(2); private MKOfflineMap mOffline = null; private OfflineMapManagerAdapter downAdapter; private OfflineMapAdapter allSearchAdapter; private OfflineExpandableListAdapter allCountryAdapter; private List<OfflineMapItem> itemsDown; // 下载或下载中城市 private List<OfflineMapItem> itemsAll; // 所有城市 ， 与热门城市及下载管理对象相同 private List<OfflineMapItem> itemsProvince; private List<List<OfflineMapItem>> itemsProvinceCity; // ----------------------- Constructors ---------------------- // -------- Methods for/from SuperClass/Interfaces ----------- @Override protected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.activity_offline_map); //final String packname = this.getPackageName();//PackageInfo packageInfo;//try////packageInfo = this.getPackageManager().getPackageInfo(packname, PackageManager.GET_SIGNATURES);//////if (code == -00)//// 初始化离线地图管理 mOffline = new MKOfflineMap(); mOffline.init(this); initViews(); viewpager.setCurrentItem(1);//}//}//catch (NameNotFoundException e)////e.printStackTrace();//} } private boolean isResumed = false; @Override protected void onResume() super.onResume(); if (!isResumed) isResumed = true; loadData(); } } @Override protected void onDestroy() super.onDestroy(); mOffline.destroy(); } /** * * @author chenshiqiang E-mail:csqwyyx@163.com * @param type * 事件类型: MKOfflineMap.TYPE_NEW_OFFLINE, MKOfflineMap.TYPE_DOWNLOAD_UPDATE, MKOfflineMap.TYPE_VER_UPDATE. * @param state * 事件状态: 当type为TYPE_NEW_OFFLINE时 ， 表示新安装的离线地图数目. 当type为TYPE_DOWNLOAD_UPDATE时，表示更新的城市ID. */ @Override public void onGetOfflineMapState(int type, int state) switch (type) case MKOfflineMap.TYPE_DOWNLOAD_UPDATE: MKOLUpdateElement update = mOffline.getUpdateInfo(state); if (setElement(update, true) != null) if (itemsDown != null && itemsDown.size() > 1) Collections.sort(itemsDown); } refreshDownList(); } else downAdapter.notifyDataSetChanged(); } allSearchAdapter.notifyDataSetChanged(); allCountryAdapter.notifyDataSetChanged(); break; case MKOfflineMap.TYPE_NEW_OFFLINE: // 有新离线地图安装 Log.d("OfflineDemo", String.format("add offlinemap num:%d", state)); break; case MKOfflineMap.TYPE_VER_UPDATE: // 版本更新提示 break; } } /** * 百度下载状态改变（暂停--》恢复）居然不回调，所以改变状态时自己得增加接口监听状态改变刷新界面 * * @author chenshiqiang E-mail:csqwyyx@163.com * @param item * 有状态改变的item * @param removed * item是否被删除 */ @Override public void statusChanged(OfflineMapItem item, boolean removed) if (removed) for (int i = itemsDown.size() - 1; i >= 0; i--) OfflineMapItem temp = itemsDown.get(i); if (temp.getCityId() == item.getCityId()) itemsDown.remove(i); } } refreshDownList(); } else loadData(); downAdapter.notifyDataSetChanged(); } allSearchAdapter.notifyDataSetChanged(); allCountryAdapter.notifyDataSetChanged(); } // --------------------- Methods public ---------------------- public void toDownloadPage() viewpager.setCurrentItem(0); } // --------------------- Methods private --------------------- private void initViews() // TODO viewpager = (ViewPager) findViewById(R.id.viewpager); pagertab = (PagerTabStrip) findViewById(R.id.pagertab); LayoutInflater inf = LayoutInflater.from(this); View v1 = inf.inflate(R.layout.view_offline_download, null, false); svDown = (MySearchView) v1.findViewById(R.id.svDown); lvDown = (ListView) v1.findViewById(R.id.lvDown); views.add(v1); View v2 = inf.inflate(R.layout.view_offline_countrys, null, false); svAll = (MySearchView) v2.findViewById(R.id.svAll); lvWholeCountry = (ExpandableListView) v2.findViewById(R.id.lvWholeCountry); lvSearchResult = (ListView) v2.findViewById(R.id.lvSearchResult); views.add(v2); titles.add("下载管理"); titles.add("城市列表"); pagertab.setTabIndicatorColor(0xff00cccc); pagertab.setDrawFullUnderline(false); pagertab.setBackgroundColor(0xFF38B0DE); pagertab.setTextSpacing(50); viewpager.setOffscreenPageLimit(2); viewpager.setAdapter(new MyPagerAdapter()); svDown.setSearchListener(new MySearchView.SearchListener() @Override public void afterTextChanged(Editable text) refreshDownList(); } @Override public void search(String text) } }); svAll.setSearchListener(new MySearchView.SearchListener() @Override public void afterTextChanged(Editable text) refreshAllSearchList(); } @Override public void search(String text) } }); downAdapter = new OfflineMapManagerAdapter(this, mOffline, this); lvDown.setAdapter(downAdapter); allSearchAdapter = new OfflineMapAdapter(this, mOffline, this); lvSearchResult.setAdapter(allSearchAdapter); allCountryAdapter = new OfflineExpandableListAdapter(this, mOffline, this); lvWholeCountry.setAdapter(allCountryAdapter); lvWholeCountry.setGroupIndicator(null); } /** * 刷新下载列表, 根据搜索关键字及itemsDown 下载管理数量变动时调用 */ private void refreshDownList() String key = svDown.getInputText(); if (key == null || key.length() < 1) downAdapter.setDatas(itemsDown); } else List<OfflineMapItem> filterList = new ArrayList<OfflineMapItem>(); if (itemsDown != null && !itemsDown.isEmpty()) for (OfflineMapItem i : itemsDown) if (i.getCityName().contains(key)) filterList.add(i); } } } downAdapter.setDatas(filterList); } } /** * 刷新所有城市搜索结果 */ private void refreshAllSearchList() String key = svAll.getInputText(); if (key == null || key.length() < 1) lvSearchResult.setVisibility(View.GONE); lvWholeCountry.setVisibility(View.VISIBLE); allSearchAdapter.setDatas(null); } else lvSearchResult.setVisibility(View.VISIBLE); lvWholeCountry.setVisibility(View.GONE); List<OfflineMapItem> filterList = new ArrayList<OfflineMapItem>(); if (itemsAll != null && !itemsAll.isEmpty()) for (OfflineMapItem i : itemsAll) if (i.getCityName().contains(key)) filterList.add(i); } } } allSearchAdapter.setDatas(filterList); } } private void loadData() new CsqBackgroundTask<Void>(this) @Override protected Void onRun() // TODO Auto-generated method stub // 导入离线地图包 // 将从官网下载的离线包解压，把vmp文件夹拷入SD卡根目录下的BaiduMapSdk文件夹内 。// 把网站上下载的文件解压，将\BaiduMap\vmp\l里面的.dat_svc文件，拷贝到手机BaiduMapSDK/vmp/h目录下 int num = mOffline.importOfflineData(); if (num > 0) ToastUtil.showToastInfo(BaiduOfflineMapActivity.this, "成功导入" + num + "个离线包", false); } List<MKOLSearchRecord> all = null; try all = mOffline.getOfflineCityList(); } catch (Exception e) e.printStackTrace(); } if (all == null || all.isEmpty()) ToastUtil.showToastInfo(BaiduOfflineMapActivity.this, "未获取到离线地图城市数据 ， 可能有其他应用正在使用百度离线地图功能！", false); return null; } List<MKOLSearchRecord> hotCity = mOffline.getHotCityList(); HashSet<Integer> hotCityIds = new HashSet<Integer>(); if (!hotCity.isEmpty()) for (MKOLSearchRecord r : hotCity) hotCityIds.add(r.cityID); } } itemsAll = new ArrayList<OfflineMapItem>(); itemsDown = new ArrayList<OfflineMapItem>(); itemsProvince = new ArrayList<OfflineMapItem>(); itemsProvinceCity = new ArrayList<List<OfflineMapItem>>(); // cityType 0:全国；1：省份；2：城市,如果是省份，可以通过childCities得到子城市列表 // 全国概略图、直辖市、港澳 子城市列表 ArrayList<MKOLSearchRecord> childMunicipalities = new ArrayList<MKOLSearchRecord>(); proHot.cityName = "热门城市"; proHot.childCities = cs; List<MKOLUpdateElement> updates = mOffline.getAllUpdateInfo(); if (updates != null && updates.size() > 0) } @Override protected void onResult(Void result) // TODO Auto-generated method stub refreshDownList(); refreshAllSearchList(); allCountryAdapter.setDatas(itemsProvince, itemsProvinceCity); } }.execute(); }

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