我正在学习 Java EE，我必须记住使用四小时定时 cookie 登录的用户。
我必须以这种方式实现它，因为 cookie 部分对我的学校来说是强制性的。我知道我的 cookie 创建得很好（在 中LoginAction.java），因为我在自定义操作中对其进行了测试。（在我的login.jsp我放了一个 struts 标签<action ... executeResults="true"/>。
我创建了一个名为拦截器的拦截器LoginInterceptor来拦截访问页面的每一次尝试。
它非常正确地拦截了请求（是的！）但是我无法检查 cookie，因为我HTTPServletRequest的 is null。
我如何测试？我转到索引 ( localhost.../myProject/) 我使用“记住我”登录。
你有什么想法吗？
Index.jsp：
<% response.sendRedirect("AccueilAction.action"); %>
struts.xml：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="false"/>
<constant name="struts.devMode" value="true"/>
<package name="default" extends="struts-default">
<global-results>
<result name="login">/WEB-INF/content/login.jsp</result>
</global-results>
</package>
<package name="com.yaka.yakaaerien.actions" namespace ="/" extends ="struts-default">
<interceptors>
<interceptor name="loginInterceptor"
class="com.yaka.yakaaerien.interceptor.LoginInterceptor" />
<interceptor-stack name="globalStack">
<interceptor-ref name="loginInterceptor"/>
<interceptor-ref name="defaultStack"/>
</interceptor-stack>
</interceptors>
<action name="ActionsListAction" class="com.yaka.yakaaerien.actions.ActionsListAction">
<interceptor-ref name="globalStack"/>
<result>/index.jsp</result>
</action>
<action name="AccueilAction" class="com.yaka.yakaaerien.actions.AccueilAction">
<interceptor-ref name="globalStack"/>
<result>/WEB-INF/content/login.jsp</result>
</action>
<action name="LoginAction" class="com.yaka.yakaaerien.actions.LoginAction">
<result name="success">/WEB-INF/content/Accueil.jsp</result>
<result name="error">/WEB-INF/content/login.jsp</result>
<result name="input">/WEB-INF/content/login.jsp</result>
</action>
<action name="GenerePasswordAction" class="com.yaka.yakaaerien.actions.GenerePasswordAction">
<result>/WEB-INF/content/GenerePassword.jsp</result>
<result name="success">/WEB-INF/content/result.jsp</result>
<result name="error">/WEB-INF/content/GenerePassword.jsp</result>
<result name="input">/WEB-INF/content/GenerePassword.jsp</result>
</action>
</package>
</struts>
LoginAction.java （getter 和 setter 工作，我不展示它们，它们是自动生成的）：
//imports....
public class LoginAction extends ActionSupport implements ServletRequestAware, ServletResponseAware {
private boolean isAdmin = false;
private String message;
private String login;
private String password;
private String userID;
private String remember;
private UsersDAO usersDAO = new UsersDAO();
public ArrayList<Users> list_users = new ArrayList<Users>();
protected HttpServletRequest servletRequest;
protected HttpServletResponse servletResponse;
@Override
public String execute() throws Exception {
UsersDAO actions = new UsersDAO();
List list_users = actions.get_users(login, password);
Iterator i = list_users.iterator();
Users user;
if (list_users != null && !list_users.isEmpty()) {
while(i.hasNext()){
user = (Users)i.next();
if (user.getUserIsAdm() != null && user.getUserIsAdm()) {
isAdmin = true;
}
// Permits to save the current logged Session
//ActionContext.getContext().getSession().put("logged", user.getUserFirstName());
System.out.println("success");
if (remember.equals("true")) {
System.out.println("Registering new cookie");
Cookie userCookie = new Cookie("userID", user.getUserFirstName() + "," + user.getUserPassword());
userCookie.setMaxAge(60 * 60 * 4);
servletResponse.addCookie(userCookie);
}
return SUCCESS;
}
}else {
System.out.println("Adding actionError");
addActionError("Erreur : Nom d'utilisateur ou mot de passe érroné.");
}
return ERROR;
}
@Override
public void validate() {
System.out.println("Form validation");
System.out.println(remember);
Map<String, List<String>> fields = getFieldErrors();
fields = new HashMap<String, List<String>>();
if (login == null || login.length() == 0) {
addFieldError("coucou", "coucou");
}
if (password == null || password.length() == 0) {
addFieldError("bad password", "bad password");
}
}
@Override
public void setServletRequest(HttpServletRequest hsr) {
this.servletRequest = hsr;
}
@Override
public void setServletResponse(HttpServletResponse hsr) {
this.servletResponse = hsr;
}
}
LoginInterceptor.java：
public class LoginInterceptor implements Interceptor {
private HttpServletRequest servletRequest;
private String cookied = "false";
public void destroy() {
System.out.println("destroy");
}
public void init() {
System.out.println("init");
}
@Override
public String intercept(ActionInvocation ai) throws Exception {
if(ai.getAction() instanceof ServletRequestAware)
{
System.out.println("omg");
this.servletRequest = (HttpServletRequest)ai.getInvocationContext().
get(StrutsStatics.HTTP_REQUEST);
}
UsersDAO actions = new UsersDAO();
System.out.println("Entering LoginInterceptor");
if (getCookie("userID") != null) {
System.out.println("Looking for cookie userID");
String cookieValue = getCookie("userID").getValue();
String login = cookieValue.substring(0, cookieValue.lastIndexOf(","));
String password = cookieValue.substring(cookieValue.lastIndexOf(",") + 1);
List list_users = actions.get_users(login, password);
System.out.println("Checking cookie for user :" + login);
Iterator i = list_users.iterator();
Users currentUser;
while (i.hasNext()) {
currentUser = (Users) i.next();
System.out.println(currentUser.getUserFirstName());
System.out.println(getCookie("userID").getValue());
if (currentUser.getUserFirstName().equals(login)) {
System.out.println("Cookie found !");
cookied = "true";
return ai.invoke();
}
}
}
return "login";
}
public Cookie getCookie(String name) {
if (servletRequest != null) {
if (servletRequest.getCookies() != null) {
Cookie cookies[] = servletRequest.getCookies();
Cookie requestedCookie = null;
if (cookies != null) {
for (Cookie current : cookies) {
if (current.getName().equals(name)) {
requestedCookie = current;
break;
}
}
}
return requestedCookie;
}
}
return null;
}
public void setServletRequest(HttpServletRequest hsr) {
this.servletRequest = hsr;
}
public String getCookied() {
return cookied;
}
public void setCookied(String cookied) {
this.cookied = cookied;
}
}