use*_*352 5 java authentication jsf-2
我正在尝试使用基于表单的身份验证的HttpServletRequest.login.
一切都好(容器告诉登录/密码是否良好),除了在用户输入登录后,我不知道如何将用户重定向到他要求的受保护页面(重新显示登录表单).怎么做？
在此先感谢您的帮助.
代码:
web.xml中:
<login-config>
<auth-method>FORM</auth-method>
<realm-name>security</realm-name>
<form-login-config>
<form-login-page>/faces/loginwithlogin.xhtml</form-login-page>
<form-error-page>/faces/noaut.xhtml</form-error-page>
</form-login-config>
</login-config>
页面loginwithlogin.xhtml
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Authentication</title>
</h:head>
<h:body>
<h:form>
Login :
<h:inputText value="#{login.login}" required="true" />
<p/>
Mot de passe :
<h:inputSecret value="#{login.password}" required="true" />
<p/>
<h:commandButton value="Connexion" action="#{login.submit}">
<f:ajax execute="@form" render="@form" />
</h:commandButton>
<h:messages />
</h:form>
</h:body>
</html>
更新:没有Ajax它不起作用.
支持豆:
@Named
@SessionScoped
public class Login implements Serializable {
private String login;
private String password;
// getters and setters
...
public void submit() {
FacesContext context = FacesContext.getCurrentInstance();
HttpServletRequest request =
(HttpServletRequest) context.getExternalContext().getRequest();
try {
request.login(login, mdp);
context.addMessage(null,
new FacesMessage(FacesMessage.SEVERITY_INFO,
"OK", null));
} catch (ServletException e) {
context.addMessage(null,
new FacesMessage(FacesMessage.SEVERITY_ERROR,
"Bad login", null));
}
}
}
在基于容器管理表单的身份验证的情况下,登录页面位于由a打开的封面下,RequestDispatcher#forward()因此原始请求URI可用作具有由其标识的名称的请求属性RequestDispatcher#FORWARD_REQUEST_URI.请求属性(基本上,请求范围)在JSF中可用ExternalContext#getRequestMap().
因此,这应该做:
private String requestedURI;
@PostConstruct
public void init() {
requestedURI = FacesContext.getCurrentInstance().getExternalContext()
.getRequestMap().get(RequestDispatcher.FORWARD_REQUEST_URI);
if (requestedURI == null) {
requestedURI = "some/default/home.xhtml";
}
}
public void submit() throws IOException {
// ...
try {
request.login(username, password);
externalContext.redirect(requestedURI);
} catch (ServletException e) {
context.addMessage(null,
new FacesMessage(FacesMessage.SEVERITY_ERROR,
"Bad login", null));
}
}
您只需要创建bean @ViewScoped(JSF)或@ConversationScoped(CDI)而不是@SessionScoped(绝对不是@RequestScoped;否则需要使用不同的方法<f:param>和<f:viewParam>).
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