Hi, can anyone help me to split the servlet(week02_4) so that only control code remains.I need to forward/redirect request/responses to two other servlets(VowelFrequencyServlet and WordCountServlet).I am not sure where to place the RequestDispatcher.
Week02_04 servlet:
package servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Week02_04 extends HttpServlet
{
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
String reportType = request.getParameter("reportType");
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String userString = request.getParameter("userString");
try
{
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet Week02_04</title>");
out.println("<link rel=\"stylesheet\" type=\"text/css\" href=\"Week02_04.css\">");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet Week 02, Exercise 04</h1>");
out.println("<p class=\"inline\">You typed: '<pre class=\"inline\">" +
userString + "</pre>'</p>");
if (reportType.equalsIgnoreCase("W"))
{
int numWords = countWords(userString);
out.println("<p>It has " + numWords +
" word" + (numWords == 1 ? "" : "s") + "</p>");
}
else if (reportType.equalsIgnoreCase("V"))
{
char[] vowel = {'a', 'e', 'i', 'o', 'u'};
int[] count = {0, 0, 0, 0, 0};
for (int i = 0; i < userString.length(); i++)
{
switch (userString.charAt(i))
{
case 'a':
case 'A':
count[0]++;
break;
case 'e':
case 'E':
count[1]++;
break;
case 'i':
case 'I':
count[2]++;
break;
case 'o':
case 'O':
count[3]++;
break;
case 'u':
case 'U':
count[4]++;
break;
default:
break;
}
}
out.println("<h3>Vowel usage:</h3>");
out.println("<table>");
for (int i = 0; i < vowel.length; i++)
{
out.print("<tr" + (i % 2 == 0 ? " class=\"shaded\"" : "") + ">" +
"<td class=\"vowel\">'" + vowel[i] + "'</td>" +
"<td class=\"barchart\">");
if (count[i] == 0)
{
out.print("-");
}
else
{
for (int star = 0; star < count[i]; star++)
{
out.print("*");
}
}
out.println("</td></tr>");
}
out.println("</table>");
}
out.println("</body>");
out.println("</html>");
}
finally
{
out.close();
}
}
private int countWords(String str)
{
int numWords = str.trim().length();
if (numWords > 0)
{
numWords = str.split(" ").length;
}
return numWords;
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*/
public String getServletInfo()
{
return "Short description";
}// </editor-fold>
}VowelFrequencyServlet:
package servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class VowelFrequencyServlet extends HttpServlet
{
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
PrintWriter out = response.getWriter();
String userString = request.getParameter("userString");
}WordCountServlet:
package servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class WordCountServlet extends HttpServlet
{
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
PrintWriter out = response.getWriter();
String userString = request.getParameter("userString");
}