public final class RegistrationServlet extends HttpServlet {
private Log log = LogFactory.getLog(RegistrationServlet.class);

/**
* Route the user to the execute method
*
* @param request The HTTP request we are processing
* @param response The HTTP response we are creating
* @throws IOException if an input/output error occurs
* @throws ServletException if a servlet exception occurs
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
execute(request, response);
}

/**
* Route the user to the execute method
*
* @param request The HTTP request we are processing
* @param response The HTTP response we are creating
* @throws IOException if an input/output error occurs
* @throws ServletException if a servlet exception occurs
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
execute(request, response);
}

/**
* Process the specified HTTP request, and create the corresponding HTTP
* response (or forward to another web component that will create it).
*
* @param request The HTTP request we are processing
* @param response The HTTP response we are creating
* @throws IOException if an input/output error occurs
* @throws ServletException if a servlet exception occurs
*/
public void execute(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
if (log.isDebugEnabled()) {
log.debug("processing servletPath '" + request.getServletPath() +
"'");
}

MessageResources resources =
((MessageResources) getServletContext().getAttribute(Globals.MESSAGES_KEY));
request.setAttribute(Globals.MESSAGES_KEY, resources);

// check the servletPath to see if they user is requesting a passwordHint
if (StringUtils.equalsIgnoreCase(request.getServletPath(),
"/passwordHint")) {
sendPasswordHint(request, response);

return;
}

if (log.isDebugEnabled()) {
log.debug("registering user...");
}

User user = new User();

// populate the user object with request parameters
RequestUtils.populate(user, request);
UserFormEx userForm = new UserFormEx();
ActionErrors errors = new ActionErrors();
try {
BeanUtils.copyProperties(userForm, user);
} catch (Exception e) {
log.error("error converting user to userForm: " + e.getMessage());
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("errors.conversion"));
}
request.setAttribute(Constants.USER_EDIT_KEY, userForm);

errors = userForm.validate(null, request);

if (!errors.isEmpty()) {
request.setAttribute(Globals.ERROR_KEY, errors);
dispatch(request, response, "signup.jsp");

return;
}

String algorithm =
(String) getServletContext().getAttribute(Constants.ENC_ALGORITHM);

// Set the default user role on this new user
user.addRole(Constants.USER_ROLE);

try {

if (algorithm == null) { // should only happen for test case
log.debug("assuming testcase, setting algorigthm to 'SHA'");
algorithm = "SHA";
}

user.setPassword(StringUtil.encodePassword(user.getPassword(),
algorithm));

WebApplicationContext ctx =
(WebApplicationContext) getServletContext()
.getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);
UserManager mgr = (UserManager) ctx.getBean("userManager");
user = mgr.saveUser(user);

// Set cookies for auto-magical login ;-)
String loginCookie = mgr.createLoginCookie(user.getUsername());
RequestUtil.setCookie(response, Constants.LOGIN_COOKIE,
loginCookie, request.getContextPath());
} catch (Exception e) {
if ((e.getMessage() != null) &&
(e.getMessage().indexOf("Duplicate entry") != -1)) {
// user already exists!
log.warn("User already exists: " + e.getMessage());
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("errors.existing.user",
userForm.getUsername(),
userForm.getEmail()));
request.setAttribute(Globals.ERROR_KEY, errors);

dispatch(request, response, "signup.jsp");
}

e.printStackTrace();
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("errors.general"));

while (e != null) {
// catch duplicate entry exceptions
String msg = e.getMessage();

if ((msg.indexOf("Duplicate entry") != -1) ||
(msg.indexOf("could not insert") != -1)) {
log.warn("User already exists: " + e.getMessage());
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("errors.existing.user",
userForm.getUsername(),
userForm.getEmail()));

break;
}

errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("errors.detail", e.getMessage()));

e = (Exception) e.getCause();
}

request.setAttribute(Globals.ERROR_KEY, errors);

dispatch(request, response, "signup.jsp");

return;
}

// Removed logic to set cookies for auto-login - why complicate things?
ActionMessages messages = new ActionMessages();

messages.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("user.registered", userForm.getUsername()));

HttpSession session = request.getSession();
session.setAttribute(Globals.MESSAGE_KEY, messages);
session.setAttribute(Constants.REGISTERED, Boolean.TRUE);

// Send user an e-mail
if (log.isDebugEnabled()) {
log.debug("Sending user '" + userForm.getUsername()
+ "' an account information e-mail");
}

StringBuffer msg = new StringBuffer();
msg.append(resources.getMessage("signup.email.message"));
msg.append("\n\n" + resources.getMessage("userFormEx.username"));
msg.append(": " + userForm.getUsername() + "\n");
msg.append(resources.getMessage("userFormEx.password") + ": ");
msg.append(userForm.getPassword());
msg.append("\n\nLogin at: " + RequestUtils.serverURL(request) +
request.getContextPath());

String subject = resources.getMessage("signup.email.subject");

try {
// From,to,cc,subject,content
MailSender.sendTextMessage(Constants.DEFAULT_FROM,
userForm.getEmail(), null,
subject, msg.toString());
} catch (MessagingException me) {
log.warn("Failed to send Account Information e-mail");
}

// send to welcome page
String route = request.getContextPath() + "/mainMenu.html";

if (log.isDebugEnabled()) {
log.debug("routing user to: " + route);
}

response.sendRedirect(response.encodeRedirectURL(route));
}

/**
* Process the user's request to get their password e-mailed to them.
*
* @param request The HTTP request we are processing
* @param response The HTTP response we are creating
* @throws IOException if an input/output error occurs
* @throws ServletException if a servlet exception occurs
*/
public void sendPasswordHint(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
MessageResources resources =
(MessageResources) request.getAttribute(Globals.MESSAGES_KEY);
ActionMessages messages = new ActionMessages();
String userId = request.getParameter("username");
String failure = "/login.jsp";

// ensure that the username has been sent
if (userId == null) {
log.warn("Username not specified, notifying user that it's a required field.");

ActionErrors errors = new ActionErrors();
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("errors.required",
resources.getMessage("userFormEx.username")));
request.setAttribute(Globals.ERROR_KEY, errors);
dispatch(request, response, failure);

return;
}

if (log.isDebugEnabled()) {
log.debug("Processing Password Hint...");
}

// look up the user's information
try {
WebApplicationContext ctx =
(WebApplicationContext) getServletContext().getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);
UserManager userMgr = (UserManager) ctx.getBean("userManager");

User user = (User) userMgr.getUser(userId);

StringBuffer msg = new StringBuffer();
msg.append("Your password hint is: " + user.getPasswordHint());
msg.append("\n\nLogin at: " + RequestUtils.serverURL(request) +
request.getContextPath());

// From,to,cc,subject,content
MailSender.sendTextMessage(Constants.DEFAULT_FROM,
user.getEmail(), null,
"Password Hint", msg.toString());

messages.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("login.passwordHint.sent", userId,
user.getEmail()));
} catch (Exception e) {
//If exception is expected do not rethrow
ActionErrors errors = new ActionErrors();
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("login.passwordHint.error", userId));

request.setAttribute(Globals.ERROR_KEY, errors);
dispatch(request, response, failure);

return;
}

// report messages back to the user
if (!messages.isEmpty()) {
request.setAttribute(Globals.MESSAGE_KEY, messages);
}

dispatch(request, response, failure);

return;
}

/**
* Dispatch request to common JSP
*
* @param request
* @param response
* @throws IOException
* @throws ServletException
*/
public void dispatch(HttpServletRequest request,
HttpServletResponse response, String jsp)
throws IOException, ServletException {
// forward back to the register.jsp
RequestDispatcher dispatcher = request.getRequestDispatcher("/" + jsp);
dispatcher.forward(request, response);
}
}

整个团队水平OK,它并没有坏处,不适合可以不用.像这里的使用偶觉得是比较灵活的,没有

被任何一种框架限定死.非得如何使用,不可以与标准的东西一并来使用.总之团队的水平很

重要,团队的水平不行,干啥啥不成.这个就不是框架的原因了.

************************************
另外偶的水平一般的很.欢迎拍砖.