Question

我正在尝试实施User-Auth。应用程序...我需要验证，如果用户已经在我的数据库中，那么他可以登录并运行某些操作。

我使用Wildfly作为App。服务器和JSF。我已经安装了H2 DB本地。我的认证代码：

@SuppressWarnings("javadoc")
// @Stateless
@SessionScoped
@ManagedBean
@WebServlet(description = "Authentification", urlPatterns = { "/Authentification" })
public class Authentification extends HttpServlet implements Serializable {

    private static final long serialVersionUID = 1L;

    private String username;
    private String password;
    private String originalURL;

    @Inject
    private EntityService<Employee> userService;

    @Override
    public void init() throws ServletException {

    }

    @Override
    protected void doPost(final HttpServletRequest request, final HttpServletResponse response)
            throws ServletException, IOException {
        if (this.username != null && this.password != null) {
            final List<Employee> employees = userService.loadAll(Employee.FINDALL, Employee.class);

            for (final Employee employee : employees) {
                if (employee.getLastName() == this.username) {
                    System.out.println(this.username + " found!");
                    response.sendRedirect("index.xhtml");
                } else {
                    System.out.println(this.username + " not found!");
                }
            }
        }
    }

    public void lotout() {
        final FacesContext context = FacesContext.getCurrentInstance();
        final HttpServletRequest request = (HttpServletRequest) context.getExternalContext().getRequest();
        try {
            // TODO: Abmelden
            request.logout();
        } catch (final ServletException e) {
            // TODO: Exceptionsbehandlung
            context.addMessage(null, new FacesMessage("Logout failed."));
        }
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(final String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(final String password) {
        this.password = password;
    }

    public String getOriginalURL() {
        return originalURL;
    }

    public void setOriginalURL(final String originalURL) {
        this.originalURL = originalURL;
    }
}

现在是我的xhtml页面：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:h="http://java.sun.com/jsf/html">

    <h:form>
        <h:outputLabel for="username" value="Username" />
        <h:inputText id="username" value="#{Authentification.username}" 
        maxsize="20" required="true" />
        <br />
        <h:outputLabel for="password" value="Password" />
        <h:inputSecret id="password" value="#{Authentification.password}" 
        maxsize="10" required="true" />
        <br />
        <h:commandButton value="Login"
                    action="#{Authentification.doPost}" />
    </h:form>
</html>

一旦我启动了应用程序。我从Wildfly那里得到了这个错误：

16:41:31,760 ERROR [io.undertow.request] (default task-30) UT005023: Exception handling request to /sep-gruppe-5/login.xhtml;jsessionid=sDqBv4bcos5dJznjwBhmQv2nXxPlWt9HVlsYwXXl.w1289: javax.servlet.ServletException: /login.xhtml @10,37 value="#{Authentification.username}": Target Unreachable, identifier 'Authentification' resolved to null
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:667)
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:86)
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

我认为最重要的部分是：

Caused by: javax.el.PropertyNotFoundException: /login.xhtml @10,37 value="#{Authentification.username}": Target Unreachable, identifier 'Authentification' resolved to null
    at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:100)
    at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:95)

我不知道我现在失踪了什么......应用程序。无法获得Class Authentification ...为什么这样？请帮忙。

用户身份验证不起作用

0 个答案: