基于Java web的新闻管理系统（源码+数据库）.zip

package org.news.servlet; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.sql.SQLException; import java.util.Arrays; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.FileUploadBase; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.news.entity.Comment; import org.news.entity.News; import org.news.entity.Topic; import org.news.service.CommentsService; import org.news.service.NewsService; import org.news.service.TopicsService; import org.news.service.impl.CommentsServiceImpl; import org.news.service.impl.NewsServiceImpl; import org.news.service.impl.TopicsServiceImpl; import org.news.util.Page; public class NewsServlet extends HttpServlet { private static final long serialVersionUID = 7679716260193021854L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); String contextPath = request.getContextPath(); String opr = request.getParameter("opr"); TopicsService topicService = new TopicsServiceImpl(); NewsService newsService = new NewsServiceImpl(); CommentsService commentsService = new CommentsServiceImpl(); try { if (opr.equals("addComment")) {// 添加评论 String cauthor = request.getParameter("cauthor"); String cnid = request.getParameter("nid"); String cip = request.getParameter("cip"); String ccontent = request.getParameter("ccontent"); Comment comment = new Comment(); comment.setCnid(Integer.parseInt(cnid)); comment.setCcontent(ccontent); comment.setCdate(new java.util.Date()); comment.setCip(cip); comment.setCauthor(cauthor); try { commentsService.addComment(comment); out.print("<script type=\"text/javascript\">"); out.print("alert(\"评论成功，点击确认返回原来页面\");"); out.print("location.href=\"" + contextPath + "/util/news?opr=readNew&nid=" + cnid + "\";"); out.print("</script>"); } catch (Exception e) { out.print("<script type=\"text/javascript\">"); out.print("alert(\"评论添加失败！请联系管理员查找原因！点击确认返回原来页面\");"); out.print("location.href=\"" + contextPath + "/util/news?opr=readNew&nid=" + cnid + "\";"); out.print("</script>"); } } else if ("readNew".equals(opr)) {// 读取某条新闻 String nid = request.getParameter("nid"); News news = newsService.findNewsByNid(Integer.parseInt(nid)); news.setComments(commentsService.findCommentsByNid(Integer .parseInt(nid))); Map<Integer, Integer> topics = new HashMap<Integer, Integer>(); topics.put(1, 5); topics.put(2, 5); topics.put(5, 5); List<List<News>> latests = newsService .findLatestNewsByTid(topics); request.setAttribute("news", news); request.setAttribute("list1", latests.get(0));// 左侧国内新闻 request.setAttribute("list2", latests.get(1));// 左侧国际新闻 request.setAttribute("list3", latests.get(2));// 左侧娱乐新闻 request.getRequestDispatcher("/newspages/news_read.jsp") .forward(request, response); } else if ("listTitle".equals(opr)) { Map<Integer, Integer> topics = new HashMap<Integer, Integer>(); topics.put(1, 5); topics.put(2, 5); topics.put(5, 5); List<List<News>> latests = newsService .findLatestNewsByTid(topics); List<Topic> list = topicService.findAllTopics(); List<News> list4 = null; String tid = request.getParameter("tid"); String pageIndex = request.getParameter("pageIndex");// 获得当前页数 if (pageIndex == null || (pageIndex = pageIndex.trim()).length() == 0) { pageIndex = "1"; } int currPageNo = Integer.parseInt(pageIndex); if (currPageNo < 1) currPageNo = 1; Page pageObj = new Page(); pageObj.setCurrPageNo(currPageNo); // 设置当前页码 pageObj.setPageSize(15); // 设置每页显示条数 if (tid == null || (tid = tid.trim()).length() == 0) { newsService.findPageNews(pageObj); // 分页查询新闻 list4 = pageObj.getNewsList(); } else // 查询指定主题下的新闻 list4 = newsService.findAllNewsByTid(Integer.parseInt(tid)); request.setAttribute("list1", latests.get(0));// 左侧国内新闻 request.setAttribute("list2", latests.get(1));// 左侧国际新闻 request.setAttribute("list3", latests.get(2));// 左侧娱乐新闻 request.setAttribute("list", list); // 所有的主题 request.setAttribute("list4", list4);// 中间的新闻 request.setAttribute("pageObj", pageObj); request.getRequestDispatcher("/index.jsp").forward(request, response); } else if ("list".equals(opr)) {// 编辑新闻时对新闻的查找 List<News> list = newsService.findAllNews(); request.getSession().setAttribute("list", list); response.sendRedirect(contextPath + "/newspages/admin.jsp"); } else if ("delete".equals(opr)) { // 删除新闻及评论 String nid = request.getParameter("nid"); try { int result = newsService.deleteNews(Integer.parseInt(nid)); if (result == 0) { out.print("<script type=\"text/javascript\">"); out.print("alert(\"未找到相关新闻，点击确认返回新闻列表\");"); out.print("location.href=\"" + contextPath + "/util/news?opr=list\";"); out.print("</script>"); } else { out.print("<script type=\"text/javascript\">"); out.print("alert(\"已经成功删除新闻，点击确认返回新闻列表\");"); out.print("location.href=\"" + contextPath + "/util/news?opr=list\";"); out.print("</script>"); } } catch (Exception e) { out.print("<script type=\"text/javascript\">"); out.print("alert(\"删除失败，请联系管理员！点击确认返回新闻列表\");"); out.print("location.href=\""