Struts开发指南之工作流程 - 编程入门网
作者 佚名技术
来源 NET编程
浏览
发布时间 2012-06-22
| request);
MessageResources messages = getResources(request);
User user = null;
// Validate the request parameters specified by the user
ActionErrors errors = new ActionErrors();
String username = (String)
PropertyUtils.getSimpleProperty(form, "username");
String password = (String)
PropertyUtils.getSimpleProperty(form, "password");
UserDatabase database = (UserDatabase)
servlet.getServletContext().getAttribute(Constants.DATABASE_KEY);
if (database == null)
errors.add(ActionErrors.GLOBAL_ERROR,
new ActionError("error.database.missing"));
else {
user = getUser(database, username);
if ((user != null) && !user.getPassword().equals(password))
user = null;
if (user == null)
errors.add(ActionErrors.GLOBAL_ERROR,
new ActionError("error.password.mismatch"));
}
// Report any errors we have discovered back to the original form
if (!errors.isEmpty()) {
saveErrors(request, errors);
return (mapping.getInputForward());
}
// Save our logged-in user in the session
HttpSession session = request.getSession();
session.setAttribute(Constants.USER_KEY, user);
if (log.isDebugEnabled()) {
log.debug("LogonAction: User ''" + user.getUsername() +
"'' logged on in session " + session.getId());
}
// Remove the obsolete form bean
if (mapping.getAttribute() != null) {
if ("request".equals(mapping.getScope()))
request.removeAttribute(mapping.getAttribute());
else
session.removeAttribute(mapping.getAttribute());
}
// Forward control to the specified success URI
return (mapping.findForward("success"));
}
/**
* Look up the user, throwing an exception to simulate business logic
* rule exceptions.
*
* @param database Database in which to look up the user
* @param username Username specified on the logon form
*
* @exception ModuleException if a business logic rule is violated
*/
public User getUser(UserDatabase database, String username)
throws ModuleException {
// Force an ArithmeticException which can be handled explicitly
if ("arithmetic".equals(username)) {
throw new ArithmeticException();
}
// Force an application-specific exception which can be handled
if ("expired".equals(username)) {
throw new ExpiredPasswordException(username);
}
// Look up and return the specified user
return ((User) database.findUser(username));
}
} |
凌众科技专业提供服务器租用、服务器托管、企业邮局、虚拟主机等服务，公司网站：http://www.lingzhong.cn 为了给广大客户了解更多的技术信息，本技术文章收集来源于网络,凌众科技尊重文章作者的版权，如果有涉及你的版权有必要删除你的文章，请和我们联系。以上信息与文章正文是不可分割的一部分,如果您要转载本文章,请保留以上信息，谢谢! |
你可能对下面的文章感兴趣
关于Struts开发指南之工作流程 - 编程入门网的所有评论
