Db, cookie, passing hidden param

maheshp1987 · Mar 11, 2017 · 8f0eb98 · 8f0eb98
1 parent 83fd8ce
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diff --git a/AdvanceJava/10 Database Connection using Servlets/DBServlet.java b/AdvanceJava/10 Database Connection using Servlets/DBServlet.java
@@ -0,0 +1,70 @@
+package com.db;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+
+public class DBServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public DBServlet() {
+        super();
+        Connection conn=null;
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		 response.setContentType("text/html");
+	        PrintWriter out = response.getWriter();
+
+	        String n = request.getParameter("id");
+	        String p = request.getParameter("name");
+
+	        try {
+	            Class.forName("com.mysql.jdbc.Driver");
+	            Connection con = DriverManager.getConnection(
+	                    "jdbc:mysql://localhost:3306/demo", "root", "root");
+
+	            PreparedStatement ps = con
+	                    .prepareStatement("insert into emp values(?,?)");
+
+	            ps.setString(1, n);
+	            ps.setString(2, p);
+
+	            int i = ps.executeUpdate();
+	            if (i > 0)
+	                out.print("You are successfully registered...");
+
+	        } catch (Exception e2) {
+	            System.out.println(e2);
+	        }
+
+	        out.close();
+	    }
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		doGet(request, response);
+	}
+
+}
diff --git a/AdvanceJava/10 Database Connection using Servlets/DemoDBConnect.html b/AdvanceJava/10 Database Connection using Servlets/DemoDBConnect.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<title>Insert title here</title>
+</head>
+<body>
+<form action="DBServlet" method="get">
+
+        EmpID:<input type="text" name="id"/><br/>
+        Name:<input type="text" name="name"/><br/>
+        <input type="submit" value="Submit"/>
+</form>
+</body>
+</html>
diff --git a/AdvanceJava/8 Cookies Servlet/CookieDemo.html b/AdvanceJava/8 Cookies Servlet/CookieDemo.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<title>Insert title here</title>
+</head>
+<body>
+<form action="FirstCookieServlet" method="post">  
+Name:<input type="text" name="userName"/><br/>  
+<input type="submit" value="Proceed"/>  
+</form> 
+</body>
+</html>
diff --git a/AdvanceJava/8 Cookies Servlet/FirstCookieServlet.java b/AdvanceJava/8 Cookies Servlet/FirstCookieServlet.java
@@ -0,0 +1,57 @@
+package com.cookies;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+
+public class FirstCookieServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public FirstCookieServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		response.getWriter().append("Served at: ").append(request.getContextPath());
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try{  
+
+		    response.setContentType("text/html");  
+		    PrintWriter out = response.getWriter();  
+
+		    String name=request.getParameter("userName");  
+		    out.print("Welcome "+name);  
+
+		    Cookie ck=new Cookie("uname",name);//creating cookie object  
+		    response.addCookie(ck);//adding cookie in the response  
+
+		    //creating submit button  
+		    out.print("<form action='SecondCookieServlet' method='post'>");  
+		    out.print("<input type='submit' value='Submit'>");  
+		    out.print("</form>");  
+
+		    out.close();  
+
+		        }catch(Exception e){System.out.println(e);}  
+		  }  
+
+}
diff --git a/AdvanceJava/8 Cookies Servlet/SecondCookieServlet.java b/AdvanceJava/8 Cookies Servlet/SecondCookieServlet.java
@@ -0,0 +1,48 @@
+package com.cookies;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+
+public class SecondCookieServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public SecondCookieServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		response.getWriter().append("Served at: ").append(request.getContextPath());
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		 try{  
+
+			    response.setContentType("text/html");  
+			    PrintWriter out = response.getWriter();  
+
+			    Cookie ck[]=request.getCookies();  
+			    out.print("Hello "+ck[2].getValue());  
+
+			    out.close();  
+
+			         }catch(Exception e){System.out.println(e);}  
+			    }  
+}
diff --git a/AdvanceJava/9 Passing Hidden Variable/FirstHiddenServlet.java b/AdvanceJava/9 Passing Hidden Variable/FirstHiddenServlet.java
@@ -0,0 +1,54 @@
+package com.hidden;
+
+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;
+
+
+public class FirstHiddenServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public FirstHiddenServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try{  
+
+	        response.setContentType("text/html");  
+	        PrintWriter out = response.getWriter();  
+
+	        String name=request.getParameter("userName");  
+	        out.print("Welcome "+name);  
+
+	        //creating form that have invisible textfield  
+	        out.print("<form action='SecondHiddenServlet'>");  
+	        out.print("<input type='hidden' name='uname' value='"+name+"'>");  
+	        out.print("<input type='submit' value='Submit'>");  
+	        out.print("</form>");  
+	        out.close();  
+
+	                }catch(Exception e){System.out.println(e);}  
+
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		doGet(request, response);
+	}
+
+}
diff --git a/AdvanceJava/9 Passing Hidden Variable/HiddenParamDemo.html b/AdvanceJava/9 Passing Hidden Variable/HiddenParamDemo.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<title>Insert title here</title>
+</head>
+<body>
+<form action="FirstHiddenServlet" method="post">  
+Name:<input type="text" name="userName"/><br/>  
+<input type="submit" value="Proceed"/>  
+</form> 
+</body>
+</html>
diff --git a/AdvanceJava/9 Passing Hidden Variable/SecondHiddenServlet.java b/AdvanceJava/9 Passing Hidden Variable/SecondHiddenServlet.java
@@ -0,0 +1,47 @@
+package com.hidden;
+
+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;
+
+
+public class SecondHiddenServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public SecondHiddenServlet() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try{  
+	        response.setContentType("text/html");  
+	        PrintWriter out = response.getWriter();  
+
+	        //Getting the value from the hidden field  
+	        String name=request.getParameter("uname");  
+	        out.print("Hello "+name);  
+
+	        out.close();  
+	                }catch(Exception e){System.out.println(e);}  
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		doGet(request, response);
+	}
+
+}