Авторизация. Тестовый проект.

login.java

package ru.brbpm.lecm.wm.login.client;

import com.google.common.base.Strings;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.*;
import ru.brbpm.lecm.wm.styles.client.MainStyleResources;
import ru.brbpm.lecm.wm.styles.client.StandardStyleResources;

public class LoginController extends PopupPanel implements EntryPoint {
	private static LoginUiBinder ourUiBinder = GWT.create(LoginUiBinder.class);
	private static Messages messages = GWT.create(Messages.class);
	@UiField(provided = true)
	MainStyleResources res;

	@UiField(provided = true)
	FormPanel formPanel;
	@UiField
	TextBox userEdit;
	@UiField
	PasswordTextBox passwordEdit;

	public LoginController() {
		res = GWT.create(MainStyleResources.class);
        StandardStyleResources standard = GWT.create(StandardStyleResources.class);
		res.styles().ensureInjected();
        standard.styles().ensureInjected();

		String targetIFrame = null;
		formPanel = new FormPanel(targetIFrame);
		formPanel.setAction("j_security_check");
		formPanel.setMethod(FormPanel.METHOD_POST);
		formPanel.setEncoding(FormPanel.ENCODING_URLENCODED);
		setWidget(ourUiBinder.createAndBindUi(this));
	}

	public void onModuleLoad() {
		center();
	}

	@UiHandler("clearButton")
	void clickClear(ClickEvent event) {
		clearCredentials();
	}

	@UiHandler("enterButton")
	void clickLogin(ClickEvent event) {
		proceedLogin();
	}

	private void proceedLogin() {
		String username = userEdit.getValue();
		String password = passwordEdit.getValue();

		if (!Strings.isNullOrEmpty(username) && !Strings.isNullOrEmpty(password)) {
			try {
				formPanel.submit();
			} catch (Exception e) {
				GWT.log("EXCEPTION", e);
			}
		}
	}

	@UiHandler("passwordEdit")
	void passwordKeyPressed(KeyDownEvent event) {
		if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER) {
			proceedLogin();
		}
	}

	private void clearCredentials() {
		userEdit.setValue("");
		passwordEdit.setValue("");
		userEdit.setFocus(true);
	}

	interface LoginUiBinder extends UiBinder<Widget, LoginController> {
	}
}

web_production.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
		 version="3.0">

	<servlet>
		<servlet-name>gateway</servlet-name>
		<servlet-class>ru.brbpm.lecm.webapp.server.GatewayServlet</servlet-class>
	</servlet>

	<servlet-mapping>
		<servlet-name>gateway</servlet-name>
		<url-pattern>*.rpc</url-pattern>
	</servlet-mapping>

	<welcome-file-list>
		<welcome-file>MainWebapp.html</welcome-file>
	</welcome-file-list>

	<error-page>
		<location>/Error.html</location>
	</error-page>

	<security-role>
		<description>Все пользователи</description>
		<role-name>Everyone</role-name>
	</security-role>
	<security-role>
		<description>Все авторизованные пользователи</description>
		<role-name>Users</role-name>
	</security-role>

	<security-constraint>
		<web-resource-collection>
			<web-resource-name>Unrestricted</web-resource-name>
			<url-pattern>/Error.html</url-pattern>
			<url-pattern>/images/*</url-pattern>
			<url-pattern>/Login/*</url-pattern>
			<url-pattern>/Login.html</url-pattern>
			<url-pattern>/LoginError.html</url-pattern>
			<url-pattern>/MainWebapp.css</url-pattern>
			<url-pattern>/version.jsp</url-pattern>
		</web-resource-collection>
		<auth-constraint>
			<role-name>Everyone</role-name>
		</auth-constraint>
	</security-constraint>

	<security-constraint>
		<web-resource-collection>
			<web-resource-name>Restricted</web-resource-name>
			<url-pattern>/*</url-pattern>
			<url-pattern>/MainWebapp.html</url-pattern>
			<url-pattern>/MainWebapp/*</url-pattern>
		</web-resource-collection>
		<auth-constraint>
			<role-name>Users</role-name>
		</auth-constraint>
	</security-constraint>

	<login-config>
		<auth-method>FORM</auth-method>
		<form-login-config>
			<form-login-page>/Login.html</form-login-page>
			<form-error-page>/LoginError.html</form-error-page>
		</form-login-config>
	</login-config>

</web-app>