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CT390 Spring '14 Submission #2
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package lab3.servlets; | |
import java.io.IOException; | |
import java.io.PrintWriter; | |
import javax.servlet.ServletException; | |
import javax.servlet.annotation.WebServlet; | |
import javax.servlet.http.*; | |
import javax.servlet.http.HttpServlet; | |
import javax.servlet.http.HttpServletRequest; | |
import javax.servlet.http.HttpServletResponse; | |
/** | |
* Servlet implementation class HelloName | |
*/ | |
@WebServlet("/HelloName") | |
public class HelloName extends HttpServlet { | |
private static final long serialVersionUID = 1L; | |
/** | |
* @see HttpServlet#HttpServlet() | |
*/ | |
public HelloName() { | |
super(); | |
// TODO Auto-generated constructor stub | |
} | |
/** | |
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) | |
*/ | |
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { | |
String name = request.getParameter("name"); | |
// if statement to check for name parameter | |
if (name != null){ | |
PrintWriter out = response.getWriter(); | |
out.println("Hello " + name); | |
// Set the session | |
HttpSession session = request.getSession(true); | |
String param = (String) session.getAttribute("name"); | |
session.setAttribute("name", param); | |
} | |
// else statement if there is no parameter that is passed | |
else{ | |
PrintWriter out = response.getWriter(); | |
out.println("Hello World"); | |
} | |
} | |
/** | |
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) | |
*/ | |
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { | |
String name = request.getParameter("name"); | |
PrintWriter out = response.getWriter(); | |
out.println("Hello " + name); | |
// Set the session | |
HttpSession session = request.getSession(true); | |
String param = (String) session.getAttribute("name"); | |
session.setAttribute("name", param); | |
// Read the request header for cookies into an Array | |
Cookie[] requestCookie = request.getCookies(); | |
// Count the Cookies by using a for loop | |
int count = 0; | |
for(Cookie cookie:requestCookie){ | |
count++; | |
} | |
// Set the request header with info from the request and cookie for loop | |
response.setHeader("Cookie-Count","Hi " + name + " you have " + count + " cookies for this session."); | |
} | |
} |
There is actually an error in here, anyone?
Oh, I think the "count" variable will throw an error because it hasn't been converted to a String. String.valueOf(count)
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The code is supposed to perform the same operations, regardless of request method. Both post/get methods could be combined and defined in a separate method that's called from each method.
Your code could be reduced by not programmatically counting cookies, but accessing the count through: request.getCookies().length;
Good commenting and naming conventions of variables.