ADD file via upload

code/QueryProductionServlet.java

@@ -0,0 +1,114 @@
+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.ArrayList;
+
+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.domain.Production;
+
+/**
+ * Servlet implementation class TuserServlet
+ */
+@WebServlet(name = "queryproductionServlet", urlPatterns = { "/query-production" })
+public class QueryProductionServlet extends HttpServlet {
+	 private static final long serialVersionUID = 1L; 
+	   Connection dbconn=null;
+	   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);
+		      }
+		   }
+	   
+	 
+	public void doGet(HttpServletRequest request,
+              HttpServletResponse response)
+              throws ServletException,IOException{
+		
+		
+ArrayList<Production> productionList = null; 
+productionList = new ArrayList<Production>();
+try{
+	 String sql="SELECT * FROM Production";
+     PreparedStatement pstmt = dbconn.prepareStatement(sql);
+ResultSet rst = pstmt.executeQuery();
+while(rst.next()){
+	Production s = new Production();
+  s.setPid(rst.getInt("pid"));
+     s.setPrice(rst.getString("price"));
+    s.setProm(rst.getString("prom"));
+     s.setClassify(rst.getString("classify"));
+     s.setStore(rst.getString("store"));
+     
+  productionList.add(s);
+}
+if(!productionList.isEmpty()){
+    request.getSession().setAttribute("productionList",productionList);
+    response.sendRedirect("da-production.jsp");
+}else{
+  response.sendRedirect("error.jsp");
+}
+}catch(SQLException e){
+  e.printStackTrace();
+}
+	}
+
+//	public void doPost(HttpServletRequest request,
+//	                       HttpServletResponse response)
+//	                 throws ServletException,IOException{
+//		  String id=request.getParameter("Doid");
+//	       try{
+//	    	   String sql="SELECT * FROM Schedule WHERE Doid = ?";
+//	         PreparedStatement pstmt=dbconn.prepareStatement(sql);
+//	         pstmt.setString(1,id);
+//	         ResultSet rst=pstmt.executeQuery();
+//	        if(rst.next()){
+//	           Tuser tuser = new Tuser();
+//	           tuser.setUid(rst.getString("Uid"));
+//	           tuser.setUname(rst.getString("uname"));
+//	           tuser.setUpassword(rst.getString("upassword"));
+//	           tuser.setUsex(rst.getString("usex"));
+//	           tuser.setUage(rst.getString("uage"));
+//	           tuser.setUtel(rst.getString("utel"));
+//	           tuser.setCid(rst.getString("cid"));
+//	        
+//	           request.getSession().setAttribute("tuser", tuser);
+//	           response.sendRedirect("displaySchedule.jsp");
+//	        }else{
+//	           response.sendRedirect("error.jsp");
+//	        }	
+//	      }catch(SQLException e){
+//	  	      e.printStackTrace();
+//	      }
+//	   }
+	      public void destory() {
+	          try {
+	 	         dbconn.close();
+	 	      }catch(Exception e){
+	 		     e.printStackTrace();
+	         }
+	      }
+	   }
+	  
+