ADD file via upload

code/DynamicServlet.java

@@ -0,0 +1,113 @@
+package com.demo;
+
+import java.io.IOException;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.*;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import com.dao.Dao;
+import com.dao.DynamicDao;
+import com.dao.DynamicDaoImpl;
+import com.domain.Dynamic;
+
+
+
+/**
+ * Servlet implementation class PostCheckServlet
+ */
+@WebServlet(name ="DynamicServlet",urlPatterns={"/Dynamic.do"})
+public class DynamicServlet extends HttpServlet implements Dao {
+	private static final long serialVersionUID = 1L;
+	
+//	public void init() {   
+//		   String driver = "com.mysql.cj.jdbc.Driver";
+//		      String dburl = "jdbc:mysql://127.0.0.1:3306/tooth?useSSL=true";
+//		      String username = "root";
+//		      String password = "root";
+//		      try{
+//		          Class.forName(driver); // 加载驱动程序
+//		          // 创建连接对象
+//		          dbconn = DriverManager.getConnection(
+//		      	                     dburl,username,password);
+//		      }catch(ClassNotFoundException e1){
+//		          System.out.println(e1);
+//		          getServletContext().log("驱动程序类找不到！");   
+//		      }catch(SQLException e2){
+//		    	  System.out.println(e2);
+//		      }
+//	}
+//	 java.sql.Connection dbconn = null; public void init() { String driver =
+//	 "com.mysql.jdbc.Driver"; String dburl =
+//	"jdbc:mysql://127.0.0.1:3306/xinxin?useSSL=true"; String username = "root";
+//	 String password = "zhao157"; try{ Class.forName(driver); // 加载驱动程序 // 创建连接对象
+//	  dbconn = DriverManager.getConnection(dburl,username,password);
+//	 }catch(ClassNotFoundException e1){ System.out.println(e1);
+//	  getServletContext().log("驱动程序类找不到！"); }catch(SQLException e2){
+//	 System.out.println(e2); } }
+	 
+       
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	public void doGet(HttpServletRequest request,
+            HttpServletResponse response)
+            throws ServletException,IOException{
+		doPost(request,response);
+		
+	}
+	
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+			  String action = request.getParameter("action");
+			     if(action!=null&&action.equals("remove")){
+			         removeDynamic(request,response);
+			     } 
+			     else if (action.equals("list")){
+			         listDynamic(request,response);
+			     }else {
+			    	 System.out.println("失败");
+			     }
+		
+	}
+	
+	 private void listDynamic(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
+    	 // TODO Auto-generated method stub
+		 
+		 DynamicDao dao = new DynamicDaoImpl();
+		 try{
+			 
+			 List<Dynamic> list= dao.listDynamic();
+			 request.setAttribute("DynamicList",list);
+			 
+		 }catch(SQLException e) {}
+		RequestDispatcher rd = request.getRequestDispatcher("da-dynamic.jsp");
+		
+		rd.forward(request, response);
+
+     }
+
+
+			private void removeDynamic(HttpServletRequest request, HttpServletResponse response)  throws ServletException, IOException{
+				// TODO Auto-generated method stub
+				int Dyid=Integer.parseInt(request.getParameter("Dyid"));
+				DynamicDao dao=new DynamicDaoImpl();
+				try {
+					int success=dao.removeDynamic(Dyid);
+					if(success>0) {
+						listDynamic(request,response);
+						}
+					}catch(SQLException e) {}
+				}
+}