异常控制和处理.doc

public class ForumExceptionHandler extends ExceptionHandler {

Logger log = Logger.getLogger(getClass());

@Override
public ActionForward execute(Exception exception, ExceptionConfig config,
ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws ServletException {

request.setAttribute("exception", exception);

log.info(exception, exception);

if (exception instanceof AccountException) {
return new ActionForward("login", "/form/person/login.jsp", false);
}

return new ActionForward("exception", "/form/exception.jsp", false);
}

}

public abstract class ForumAction extends DispatchAction {

protected Log log = LogFactory.getLog(getClass());

@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

ForumForm forumForm = (ForumForm) form;

forumForm.setTitle("轻量级 Java EE 论坛程序");

if (forumForm.getAction() == null
|| forumForm.getAction().trim().length() == 0) {

return this.list(mapping, form, request, response);
}

return super.execute(mapping, form, request, response);
}

public abstract ActionForward list(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception;

}

public class PersonAction extends ForumAction {

private IPersonService<Person> personService;

/**
* 默认方法 返回到注册页面
*/
public ActionForward list(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

// PersonForm personForm = (PersonForm) form;
//
// List<Person> personList = personService.list(" from Person ", 0, 100,
// null);
//
// request.setAttribute("personList", personList);
//
// return mapping.findForward("list");

return this.initAdd(mapping, form, request, response);
}

/**
* 显示注册页面
* @param mapping
* @param form
* @param request
* @param response
* @return
*/
public ActionForward initAdd(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户注册");

return mapping.findForward("add");
}

/**
* 显示登录页面
* @param mapping
* @param form
* @param request
* @param response
* @return
*/
public ActionForward initLogin(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户登录");

return new ActionForward("login", "/form/person/login.jsp", false);
}

/**
* 注册
* @param mapping
* @param form
* @param request
* @param response
* @return
*/
public ActionForward add(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户注册");

Person person = personForm.getPerson();
person.setIpCreated(request.getRemoteAddr());
person.setIpLastActived(request.getRemoteAddr());
person.setDateCreated(new Date());
person.setDateLastActived(new Date());

if (person.getAccount() == null
|| person.getAccount().trim().length() == 0) {

request.setAttribute("message", "请输入帐号");

return this.initAdd(mapping, form, request, response);
}

if (person.getPassword() == null
|| person.getPassword().trim().length() == 0
|| !person.getPassword().equals(personForm.getPassword())) {

request.setAttribute("message", "密码不一致");

return this.initAdd(mapping, form, request, response);
}

try {
personService.create(person);

PersonUtil.setPersonInf(request, response, person);

request.setAttribute("message", "注册成功");

return new ActionForward("success", "/form/person/success.jsp",
false);

} catch (Exception e) {

request.setAttribute("message", "注册失败，原因：" + e.getMessage());

return this.initAdd(mapping, form, request, response);
}
}

/**
* 登录
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward login(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户登录");

Person person = personService.getPerson(personForm.getPerson()
.getAccount(), personForm.getPerson().getPassword());

if (person == null)
throw new AccountException("用户名密码错误");

PersonUtil.setPersonInf(request, response, person);

person.setIpLastActived(request.getRemoteAddr());
person.setDateLastActived(new Date());

personService.save(person);

request.setAttribute("message", "欢迎回来");

return new ActionForward("success", "/form/person/success.jsp", false);
}

/**
* 注销
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward logout(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户注销");

request.getSession(true).setAttribute(PersonUtil.PERSON_INFO, null);

return new ActionForward("success", "/", true);
}

/**
* 查看用户信息
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward view(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("查看用户资料");

Person person = personService.find(Person.class, personForm.getPerson()
.getId());

request.setAttribute("person", person);

return new ActionForward("view", "/form/person/viewPerson.jsp", false);
}

public IPersonService<Person> getPersonService() {
return personService;
}

public void setPersonService(IPersonService<Person> personService) {
this.personService = personService;
}

}

public class PersonAction extends ForumAction {

private IPersonService<Person> personService;

/**
* 默认方法 返回到注册页面
*/
public ActionForward list(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

// PersonForm personForm = (PersonForm) form;
//
// List<Person> personList = personService.list(" from Person ", 0, 100,
// null);
//
// request.setAttribute("personList", personList);
//
// return mapping.findForward("list");

return this.initAdd(mapping, form, request, response);
}

/**
* 显示注册页面
* @param mapping
* @param form
* @param request
* @param response
* @return
*/
public ActionForward initAdd(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户注册");

return mapping.findForward("add");
}

/**
* 显示登录页面
* @param mapping
* @param form
* @param request
* @param response
* @return
*/
public ActionForward initLogin(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户登录");

return new ActionForward("login", "/form/person/login.jsp", false);
}

/**
* 注册
* @param mapping
* @param form
* @param request
* @param response
* @return
*/
public ActionForward add(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户注册");

Person person = personForm.getPerson();
person.setIpCreated(request.getRemoteAddr());
person.setIpLastActived(request.getRemoteAddr());
person.setDateCreated(new Date());
person.setDateLastActived(new Date());

if (person.getAccount() == null
|| person.getAccount().trim().length() == 0) {

request.setAttribute("message", "请输入帐号");

return this.initAdd(mapping, form, request, response);
}

if (person.getPassword() == null
|| person.getPassword().trim().length() == 0
|| !person.getPassword().equals(personForm.getPassword())) {

request.setAttribute("message", "密码不一致");

return this.initAdd(mapping, form, request, response);
}

try {
personService.create(person);

PersonUtil.setPersonInf(request, response, person);

request.setAttribute("message", "注册成功");

return new ActionForward("success", "/form/person/success.jsp",
false);

} catch (Exception e) {

request.setAttribute("message", "注册失败，原因：" + e.getMessage());

return this.initAdd(mapping, form, request, response);
}
}

/**
* 登录
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward login(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户登录");

Person person = personService.getPerson(personForm.getPerson()
.getAccount(), personForm.getPerson().getPassword());

if (person == null)
throw new AccountException("用户名密码错误");

PersonUtil.setPersonInf(request, response, person);

person.setIpLastActived(request.getRemoteAddr());
person.setDateLastActived(new Date());

personService.save(person);

request.setAttribute("message", "欢迎回来");

return new ActionForward("success", "/form/person/success.jsp", false);
}

/**
* 注销
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward logout(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("用户注销");

request.getSession(true).setAttribute(PersonUtil.PERSON_INFO, null);

return new ActionForward("success", "/", true);
}

/**
* 查看用户信息
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward view(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

PersonForm personForm = (PersonForm) form;
personForm.setTitle("查看用户资料");

Person person = personService.find(Person.class, personForm.getPerson()
.getId());

request.setAttribute("person", person);

return new ActionForward("view", "/form/person/viewPerson.jsp", false);
}

public IPersonService<Person> getPersonService() {
return personService;
}

public void setPersonService(IPersonService<Person> personService) {
this.personService = personService;
}

}