java，jsp，servlet音乐在线试听源程序

package com.action; import java.io.*; import java.util.List; import java.util.StringTokenizer; import org.apache.struts.action.*; import com.dao.SongDAO; import com.model.SongForm; import com.model.SongTypeForm; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.*; import com.tools.MyPagination; import com.tools.StringUtils; public class SongAction extends Action { private SongDAO songDAO = null; MyPagination pagination = null; StringUtils su=new StringUtils(); public SongAction() { this.songDAO = new SongDAO(); } public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String action = request.getParameter("action"); // System.out.println("\nscrip*********************action="+action); if ("main".equals(action)) { return main(mapping, form, request, response); // 前台首页 } else if ("songQuery".equals(action)) { return songQuery(mapping, form, request, response); // 查询歌曲信息 } else if ("tryListen".equals(action)) { return tryListen(mapping, form, request, response); // 查询试听歌曲信息 } else if ("continuePlay".equals(action)) { return continuePlay(mapping, form, request, response); // 进行歌曲连播 } else if ("songSort".equals(action)) { return songSort(mapping, form, request, response); // 歌曲排行（试听和下载） } else if ("navigation".equals(action)) { return navigation(mapping, form, request, response); // 查询导航栏信息 } else if ("search".equals(action)) { return search(mapping, form, request, response); // 按条件查询歌曲 } else if ("download".equals(action)) { return download(mapping, form, request, response); // 文件下载 } else if ("songType".equals(action)) { return songType(mapping, form, request, response); // 查询歌曲类别 } else if ("adm_search".equals(action)) { return adm_search(mapping, form, request, response); // 后台查询歌曲信息 } else if ("add".equals(action)){ return adm_add(mapping,form,request,response); //添加歌曲信息 } else if ("checkMusic".equals(action)){ return checkMusic(mapping,form,request,response); //检测歌曲是否已经添加 } else if ("del".equals(action)) { return del(mapping, form, request, response); // 删除歌曲信息 } else { request.setAttribute("error", "操作失败！"); return mapping.findForward("error"); } } // 主页中的新歌速递 public ActionForward main(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { List<SongTypeForm> list = songDAO.queryType(); // 获取歌曲类别 int songTypeId = 0; String[][] typeName = new String[6][2]; for (int i = 0; i < list.size(); i++) { songTypeId = list.get(i).getId(); typeName[i][0] = String.valueOf(list.get(i).getId()); typeName[i][1] = list.get(i).getTypeName(); request.setAttribute("newSongList" + i, songDAO .query("WHERE songType=" + songTypeId + " ORDER BY upTime DESC",5)); // 获取最新上传的5首歌曲 } request.setAttribute("typeArray", typeName); // 保存类别信息数组到Request中 return mapping.findForward("main"); } // 歌曲排行 public ActionForward songSort(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String type = request.getParameter("sortType"); //获取表示是试听排行还是下载排行的参数值 if ("hits".equals(type)) { request.setAttribute("sortType", songDAO .query(" ORDER BY hits DESC",8)); // 获取试听排行信息 } else if ("download".equals(type)) { request.setAttribute("sortType", songDAO .query(" ORDER BY download DESC",8)); // 获取下载排行信息 } request.setAttribute("sortTypeName", type); RequestDispatcher requestDispatcher = request .getRequestDispatcher("/songSort.jsp"); //将页面重定向到歌曲排行榜页面 try { requestDispatcher.include(request, response); // 此处不能使用forward()方法 } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } // 获取导航栏信息 public ActionForward navigation(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { request.setAttribute("navigation", songDAO.queryType()); // 获取歌曲类别信息 RequestDispatcher requestDispatcher = request .getRequestDispatcher("/navigation.jsp"); try { requestDispatcher.include(request, response); // 此处不能使用forward()方法 } catch (ServletException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } // 查找歌曲列表 public ActionForward songQuery(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String strPage = (String) request.getParameter("Page"); int songType = Integer.parseInt(request.getParameter("songType_more")); // 要查看的歌曲类别 int Page = 1; List<SongForm> list = null; if (strPage == null) { pagination = new MyPagination(); list = songDAO.query(" WHERE s.songType=" + songType + " ORDER BY s.upTime DESC"); // 获取歌曲信息 int pagesize = 2; // 指定每页显示的记录数 list = pagination.getInitPage(list, Page, pagesize); // 初始化分页信息 request.getSession().setAttribute("pagination", pagination); } else { pagination = (MyPagination) request.getSession().getAttribute( "pagination"); Page = pagination.getPage(strPage); list = pagination.getAppointPage(Page); // 获取指定页数据 } if (list.size() > 0) { request.setAttribute("typeName", list.get(0).getSongType()); // 获取歌曲类别 request.setAttribute("typeID", list.get(0).getSongTypeId()); // 获取歌曲类别ID } request.setAttribute("songList", list); // 保存当前页的歌曲信息 request.setAttribute("Page", Page); // 保存的当前页码 return mapping.findForward("songQuery"); } // 按条件查询歌曲 public ActionForward search(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String strPage = (String) request.getParameter("Page"); int songType = Integer.parseInt(request.getParameter("songType_more")); // 要查看的歌曲类别 String fieldName = request.getParameter("fieldName"); // 获取查询依据 String key = request.getParameter("key"); // 获取查询关键字 System.out.println("获取的查询条件：" + key + fieldName + songType); String condition = ""; String fieldName_cn = ""; if (songType > 0 && fieldName != null) { condition = " WHERE s.songType=" + songType + " AND s." + fieldName + " LIKE '%" + key + "%' ORDER BY s.upTime DESC"; } else if (songType > 0) { condition = " WHERE s.songType=" + songType + " ORDER BY s.upTime DESC"; } else if (fieldName != null) { condition = " WHERE s." + fieldName + " LIKE '%" + key + "%' ORDER BY s.upTime DESC"; } else { condition = " ORDER BY s.upTime DESC"; } if ("songName".equals(fieldName)) { fieldName_cn = "歌曲名"; } else if ("specialName".equals(fieldName)) { fieldName_cn = "专辑"; } else if ("singer".equals(fieldName)) { fieldName_cn = "歌手"; } int Page = 1; List<SongForm> list = null; if (strPage == null) { pagination = new MyPagination(); list = songDAO.query(condition); // 获取歌曲信息 int pagesize = 2; // 指定每页显示的记录数 list = pagination.getInitPage(list, Page, pagesize); // 初始化分页信息 request.getSession().setAttribute("pagination", pagination); } else { pagination = (MyPagination) request.getSession().getAttribute( "pagination"); Page = pagination.getPage(strPage); list = pagination.getAppointPage(Page); // 获取指定页数据 } if (list.size() > 0) { if (songType > 0) { // request.set