Date index

src/servlet/search_fly.java

@@ -10,7 +10,6 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
 
-
 import javabean.db_conn;
 import javabean.flight;
 
@@ -32,28 +31,44 @@ public class search_fly extends HttpServlet {
 	
 	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
 		req.setCharacterEncoding("utf-8");
-		String url=null;
+		String url = "default/index.jsp";
-			url="default/index.jsp";
 		
-		String departure=null;
+		String departure = req.getParameter("departure");
-		String destination=null;
+		String destination = req.getParameter("destination");
-		departure=req.getParameter("departure");
+		String departureYear = req.getParameter("departureYear");
-		destination=req.getParameter("destination");
+		String departureMonth = req.getParameter("departureMonth");
+		String departureDay = req.getParameter("departureDay");
 		String sql = null;
 		
-		
+		if (departure.isEmpty() && destination.isEmpty() && departureYear.isEmpty() && departureMonth.isEmpty() && departureDay.isEmpty()) {
-		if(departure==""&&destination=="") {
+			// 如果所有字段都为空，重定向到原页面
-			//如果始发地和目的地都为空则跳转回原页面
 			resp.sendRedirect(url);
-		}else if (departure!=""&&destination=="") {
+		} else {
-			sql="select * from flight where f_s_p='"+departure+"'";
+			sql = "SELECT * FROM flight WHERE 1=1";
-		}else if (departure==""&&destination!="") {
+			
-			sql="select * from flight where f_a_p='"+destination+"'";
+			if (!departure.isEmpty()) {
-		}else if (departure!=""&&destination!="") {
+				sql += " AND f_s_p='" + departure + "'";
-			sql="select * from flight where f_s_p='"+departure+"' and f_a_p='"+destination+"'";
+			}
+			if (!destination.isEmpty()) {
+				sql += " AND f_a_p='" + destination + "'";
 			}
-		if(departure==""&&destination=="") {
+			if (!departureYear.isEmpty() && !departureMonth.isEmpty() && !departureDay.isEmpty()) {
+				// 验证日期格式
+				try {
+					int year = Integer.parseInt(departureYear);
+					int month = Integer.parseInt(departureMonth);
+					int day = Integer.parseInt(departureDay);
+					if (year >= 1900 && year <= 9999 && month >= 1 && month <= 12 && day >= 1 && day <= 31) {
+						String departureDate = String.format("%04d-%02d-%02d", year, month, day);
+						sql += " AND DATE(f_Date)='" + departureDate + "'";
 					} else {
+						req.setAttribute("errorMsg", "日期格式不正确，请输入有效的年、月、日");
+					}
+				} catch (NumberFormatException e) {
+					req.setAttribute("errorMsg", "日期格式不正确，请输入数字");
+				}
+			}
+			
 			db_conn conn = new db_conn();
 			ArrayList<flight> flightlist = new ArrayList<flight>();
 			
@@ -70,16 +85,14 @@ public class search_fly extends HttpServlet {
 					flight_info.setF_a_t(res.getString(7));
 					flight_info.setF_p(res.getString(8));
 					flightlist.add(flight_info);           
-						
 				}
 				req.setAttribute("flightlist", flightlist);
 			} catch (SQLException e) {
-				System.out.println("错误信息："+e);
+				System.out.println("错误信息：" + e);
 			} finally {
 				conn.closeDB();
 			}
 			req.getRequestDispatcher("default/search.jsp").forward(req, resp);
 		}
-		
 	}
 }