package business; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.text.*; import java.sql.ResultSet; public class Article extends HttpServlet { String ID,Title,Content,Author,AddDate; private static final long serialVersionUID = 3617859655330969141L; //数据库操作对象 DBUtil Conn; /** * Constructor of the object. */ public Article() { super(); Conn = new DBUtil(); } public String getAddDate() { return AddDate; } public void setAddDate(String addDate) { AddDate = addDate; } public String getAuthor() { return Author; } public void setAuthor(String author) { Author = author; } public String getContent() { return Content; } public void setContent(String content) { Content = content; } public String getTitle() { return Title; } public void setTitle(String title) { Title = title; } public String getID() { return ID; } public void setID(String id) { ID = id; } /** * Destruction of the servlet. <br> */ public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here Conn.destroy(); } /** */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try{ request.setCharacterEncoding("GBK"); response.setContentType("text/html"); response.setCharacterEncoding("GBK"); PrintWriter out = response.getWriter(); out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">"); out.println("<HTML>"); out.println(" <HEAD><TITLE>保存文章</TITLE></HEAD>"); out.println(" <BODY>"); String Action=request.getParameter("Action"); ID = request.getParameter("ID"); if(Action=="Del"){ if(!ID.matches("[0-9]+")){ out.print("参数错误！"); } boolean blnTemp = delete(); if(blnTemp){ } }else{ out.print("错误的请求！"); } out.println(" </BODY>"); out.println("</HTML>"); out.flush(); out.close(); }catch(Exception e){ System.out.print("Article doGet:" + e.getMessage()); } } /** POST取值 */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try{ request.setCharacterEncoding("GBK"); response.setCharacterEncoding("GBK"); response.setContentType("text/html"); PrintWriter out = response.getWriter(); //取得客户端数据 String Action=request.getParameter("Action"); ID = request.getParameter("ID"); Title = request.getParameter("Title"); Content = request.getParameter("Content"); Author = request.getParameter("Author"); AddDate = GetDate(); //根据Action执行操作 int intTemp = 0; if(Action.equals("SaveAdd")){ intTemp = Insert(request); }else if(Action.equals("SaveEdit")){ if(ID.matches("[0-9]+")){ intTemp = Update(request); } } //输出结果 out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">"); out.println("<HTML>"); out.println(" <HEAD><TITLE>保存文章</TITLE></HEAD>"); out.println(" <BODY>"); if(intTemp>0){ out.print("保存数据成功！"); out.print("<a href=../index.jsp>返回</a>"); }else{ } out.println(" </BODY>"); out.println("</HTML>"); out.flush(); out.close(); }catch(Exception e){ System.out.print("Article doPost:" + e.getMessage()); } } //写入 private int Insert(HttpServletRequest request){ String sql; int intTemp=0; sql = ""; try{ request.setCharacterEncoding("GBK"); sql = "Insert Into Articles (Title,Content,Author,AddDate) Values ('"; sql += Title; sql += "','" + Content; sql += "','" + Author; sql += "','" + AddDate; sql += "')"; intTemp = Conn.Update(sql); }catch(Exception e){ System.out.print("Article Insert:" + e.getMessage()); } return intTemp; } //更新 private int Update(HttpServletRequest request){ String sql; int intTemp=0; try{ request.setCharacterEncoding("GBK"); sql = "Update Articles Set "; sql += "Title='" + Title; sql += "',Content='" + Content; sql += "',Author='" + Author; sql += "' where ID=" + ID; intTemp = Conn.Update(sql); }catch(Exception e){ System.out.print("Article Insert:" + e.getMessage()); } return intTemp; } //删除 private boolean delete() throws Exception{ boolean blnTemp = false; select(); if(Title!=null){ String sql = "delete From Articles where ID=" + ID; int intTemp = 0; intTemp = Conn.Execute(sql, intTemp); if(intTemp>0){blnTemp = true;} } return blnTemp; } //查询 public void select(){ try{ String sql; sql = "select * From Articles where ID=" + ID; ResultSet rs = Conn.Execute(sql); while(rs.next()){ ID = rs.getString("ID"); Title = rs.getString("Title"); Content = rs.getString("Content"); Author = rs.getString("Author"); } }catch(Exception e){ System.out.print("Article Select:" + e.getMessage()); } } /** * Initialization of the servlet. <br> * * @throws ServletException if an error occure */ public void init() throws ServletException { try{ }catch(Exception e){ System.out.print("Article Init:" + e.getMessage()); } } private String GetDate(){ SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); java.util.Date currentTime = new java.util.Date();//得到当前系统时间 String str_date1 = formatter.format(currentTime); //将日期时间格式化 //String str_date2 = currentTime.toString(); //将Date型日期时间转换成字符串形式 return str_date1; } }