EvalServletpublic class EvalServlet extends HttpServlet
| Fields Summary |
|---|
| public static String | EVALS_FILE | | PrintWriter | log |
| Methods Summary |
|---|
| public void | doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse resp)Service one request.
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.println("<HTML><HEAD><TITLE>Evaluation</TITLE>");
out.println("<BODY BGCOLOR=\"#0000CC\">");
if (log == null) {
out.println("<H3>Error</H3>");
out.println("Sorry, unable to log (I/O error)");
out.println("<P>Please notify your instructor at once!");
return;
}
User user = (User)request.getSession().getAttribute("jabadot.login");
if (user==null) {
out.println("<P>You must be logged in to use this servlet.");
return;
}
boolean errors = false;
String name = user.getName();
int courseGrade = -1;
String course = request.getParameter("course");
if (course == null || course.length() == 0) {
out.println("<P>Please provide a course grade");
errors = true;
}
else courseGrade = Integer.parseInt(course);
int instrGrade = 0;
String instr= request.getParameter("instr");
if (instr == null || instr.length() == 0) {
out.println("<P>Please provide an instructor grade");
errors = true;
}
else instrGrade = Integer.parseInt(instr);
String pace = request.getParameter("pace");
String best = request.getParameter("best");
String improve = request.getParameter("improve");
if (errors) {
out.println("<P>Please use the \"Back\" button and try again.");
return;
}
out.print("<H1>Thank you</H1>");
String host = request.getRemoteHost();
out.print("<P>Thanks for the comments");
if (name.length() != 0) {
out.print(", ");
out.print(name);
}
out.print('@");
out.println(host);
out.print("<P>You rated the course a ");
out.println(courseGrade);
out.print("<P>You rated the instructor's performance a ");
out.println(instrGrade);
out.print("<P>You rated the pace as ");
out.println(pace);
if (best.length() != 0) {
out.print("<P>You rated the best part as \"");
out.print(best);
out.println('\"");
}
if (improve.length() != 0) {
out.print("<P>You suggested these improvements: \"" );
out.println(improve);
out.println('\"");
}
if (request.getParameter("reviewed") != null) {
loggit(name, host, courseGrade, instrGrade, pace,
best, improve);
out.println("<H3>Done!</H3><P>Your comments have been recorded.");
} else {
out.print("<BR>");
// Kludge - seem to have to use POST here to
// let the browser "see" the query string...
out.print("<FORM METHOD=POST ACTION=");
out.print(HttpUtils.getRequestURL(request).
append("?reviewed=true&").
append(request.getQueryString()));
out.println(">");
out.print("<INPUT TYPE=submit VALUE=\"Press here to confirm\">");
out.println("</FORM>");
}
| | public void | doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
doGet(request, response);
| | public void | init()Initialize the servlet
try {
boolean append = true;
log = new PrintWriter(new FileWriter(EVALS_FILE, append));
log("Log opened, file = " + log);
} catch (IOException e) {
log("Failed to open writer");
}
| | protected synchronized void | loggit(java.lang.String name, java.lang.String host, int course, int instructor, java.lang.String pace, java.lang.String best, java.lang.String improve)
log.print("N ");
log.print(course);
log.print('\t");
log.print(instructor);
log.print('\t");
log.print(pace);
log.print(" \"");
log.print(name);
log.print("\"@");
log.print(host);
log.println();
if (best != null && best.length() != 0) {
log.print("BEST ");
log.print(best.replace('\r", ' ").replace('\n", ' "));
log.println();
}
if (improve != null && improve.length() != 0) {
log.print("IMPROVE ");
log.print(improve.replace('\r", ' ").replace('\n", ' "));
log.println();
}
log.flush();
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