如何在Wicket的SignInPanel中制作自定义错误反馈消息

Question

我正在用Wicket实现登录页面，但我没有得到它，如何编写自定义反馈消息，例如"密码错误"，"用户名错误"或"Acound被锁定"（最后一个例子应该有点困难，因为我认为它与Ldap/Ldap错误消息有关。但我认为第二个例子有一个更简单的方法，用我的登录页面的属性文件或类似的东西。我试图更改默认的Wicket"登录失败"消息，通过我页面的属性文件，我刚刚添加了"signFailed=登录失败测试"，它被更改了。。但是不知道如何告诉用户为什么！通行证或用户名错误！

这里的实现：

public class LoginPage extends SampleManagementPage {
private static final long serialVersionUID = -8585718500226951823L;
private SignInPanel signIn;

public LoginPage() {
    signIn = new SignInPanel("signInPanel");
    add(signIn);
}
}

我的SampleManagementPage扩展了WebPage！

这里是登录页面的属性文件：

page.title=登录样品管理

signInFailed=登录失败测试

Answer 1

您之所以只能更改signFailed错误消息，是因为wicket SignInPanel只会抛出此特定错误，以防其登录表单无法进行身份验证。要查看这一点，您可以打开SignInPanel.java的源代码。

克服这个问题并生成自己的错误消息的一种方法是编写自己的登录面板。我不是说这是唯一的方法，但它对我有效：）

public class LoginPanel extends Panel {
    private static final long serialVersionUID = -1662154893824849377L;
    private static final String SIGN_IN_FORM = "signInForm";
    private boolean includeRememberMe = true;
    private boolean rememberMe = true;
    private String password;
    private String username;
    public LoginPanel(final String id, final boolean includeRememberMe) {
        super(id);
        this.includeRememberMe = includeRememberMe;
        add(new FeedbackPanel("feedback"));
        add(new SignInForm(SIGN_IN_FORM));
    }
    @Override
    protected void onConfigure() {
        if (isSignedIn() == false) {
            IAuthenticationStrategy authenticationStrategy = getApplication().getSecuritySettings().getAuthenticationStrategy();
            String[] data = authenticationStrategy.load();
            if ((data != null) && (data.length > 1)) {
                if (signIn(data[0], data[1])) {
                    username = data[0];
                    password = data[1];
                    onSignInRemembered();
                } else {
                    authenticationStrategy.remove();
                }
            }
        }
        super.onConfigure();
    }
    private boolean signIn(String username, String password) {
        return AuthenticatedWebSession.get().signIn(username, password);
    }
    private boolean userExists(String username) {
        return ((MyWebSession) AuthenticatedWebSession.get()).userExists(username);
    }
    private boolean isSignedIn() {
        return AuthenticatedWebSession.get().isSignedIn();
    }
    protected void onSignInFailed() {
        error(getLocalizer().getString("signInFailed", this, "Wrong password"));
    }
    private void onUserExistsFailed() {
        error(getLocalizer().getString("userExistsFailed", this, "User does not exist"));
    }
    protected void onSignInSucceeded() {
        continueToOriginalDestination();
        setResponsePage(getApplication().getHomePage());
    }
    protected void onSignInRemembered() {
        continueToOriginalDestination();
        throw new RestartResponseException(getApplication().getHomePage());
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public LoginPanel(final String id) {
        this(id, true);
    }
    public final class SignInForm extends StatelessForm<LoginPanel> {
        private static final long serialVersionUID = 1L;
        public SignInForm(final String id) {
            super(id);
            setModel(new CompoundPropertyModel<LoginPanel>(LoginPanel.this));
            add(new TextField<String>("username"));
        add(new PasswordTextField("password"));
            WebMarkupContainer rememberMeRow = new WebMarkupContainer("rememberMeRow");
            add(rememberMeRow);
            rememberMeRow.add(new CheckBox("rememberMe"));
            rememberMeRow.setVisible(includeRememberMe);
        }
        @Override
        public final void onSubmit() {
            IAuthenticationStrategy strategy = getApplication().getSecuritySettings().getAuthenticationStrategy();
            if (!userExists(username)) {
                onUserExistsFailed();
                strategy.remove();
                return;
            }
            if (signIn(getUsername(), getPassword())) {
                if (rememberMe == true) {
                    strategy.save(username, password);
                } else {
                    strategy.remove();
                }
                onSignInSucceeded();
            } else {
                onSignInFailed();
                strategy.remove();
            }
        }
    }
}

public class MyWebSession extends AuthenticatedWebSession {
    private static final long serialVersionUID = -401924496527311251L;
    public MyWebSession(Request request) {
        super(request);
    }
    public boolean userExists(String username) {
        // business login
    }
    @Override
    public boolean authenticate(String username, String password) {
        // business login
    }
    @Override
    public Roles getRoles() {
        Roles roles  = new Roles();
        roles.add(Roles.USER);
        return roles;
    }
}