simplewebapplicationcontext.java

spring的源代码

/*
 * Copyright 2002-2005 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.web.servlet;

import java.io.IOException;
import java.util.Locale;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.BeansException;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.PropertyValue;
import org.springframework.context.support.StaticMessageSource;
import org.springframework.ui.context.Theme;
import org.springframework.ui.context.ThemeSource;
import org.springframework.ui.context.support.SimpleTheme;
import org.springframework.ui.context.support.UiApplicationContextUtils;
import org.springframework.web.context.support.StaticWebApplicationContext;
import org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver;
import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.servlet.mvc.LastModified;
import org.springframework.web.servlet.mvc.SimpleFormController;
import org.springframework.web.servlet.mvc.throwaway.ThrowawayController;
import org.springframework.web.servlet.support.RequestContextUtils;
import org.springframework.web.servlet.theme.AbstractThemeResolver;

/**
 * @author Juergen Hoeller
 * @since 21.05.2003
 */
public class SimpleWebApplicationContext extends StaticWebApplicationContext {

	public void refresh() throws BeansException {
		MutablePropertyValues pvs = new MutablePropertyValues();
		pvs.addPropertyValue(new PropertyValue("commandClass", "org.springframework.beans.TestBean"));
		pvs.addPropertyValue(new PropertyValue("formView", "form"));
		registerSingleton("/form.do", SimpleFormController.class, pvs);

		registerSingleton("/locale.do", LocaleChecker.class);

		registerPrototype("/throwaway.do", TestThrowawayController.class);

		addMessage("test", Locale.ENGLISH, "test message");
		addMessage("test", Locale.CANADA, "Canadian & test message");
		addMessage("testArgs", Locale.ENGLISH, "test {0} message {1}");
		addMessage("testArgsFormat", Locale.ENGLISH, "test {0} message {1,number,#.##} X");

		registerSingleton(UiApplicationContextUtils.THEME_SOURCE_BEAN_NAME, DummyThemeSource.class);

		super.refresh();
	}


	public static class LocaleChecker implements Controller, LastModified {

		public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
				throws ServletException, IOException {
			if (!(RequestContextUtils.getWebApplicationContext(request) instanceof SimpleWebApplicationContext)) {
				throw new ServletException("Incorrect WebApplicationContext");
			}
			if (!(RequestContextUtils.getLocaleResolver(request) instanceof AcceptHeaderLocaleResolver)) {
				throw new ServletException("Incorrect LocaleResolver");
			}
			if (!Locale.CANADA.equals(RequestContextUtils.getLocale(request))) {
				throw new ServletException("Incorrect Locale");
			}
			return null;
		}

		public long getLastModified(HttpServletRequest request) {
			return 98;
		}
	}


	public static class DummyThemeSource implements ThemeSource {

		private StaticMessageSource messageSource;

		public DummyThemeSource() {
			this.messageSource = new StaticMessageSource();
			this.messageSource.addMessage("themetest", Locale.ENGLISH, "theme test message");
			this.messageSource.addMessage("themetestArgs", Locale.ENGLISH, "theme test message {0}");
		}

		public Theme getTheme(String themeName) {
			if (AbstractThemeResolver.ORIGINAL_DEFAULT_THEME_NAME.equals(themeName)) {
				return new SimpleTheme(AbstractThemeResolver.ORIGINAL_DEFAULT_THEME_NAME, this.messageSource);
			}
			else {
				return null;
			}
		}
	}


	public static class TestThrowawayController implements ThrowawayController {

		public static int counter = 0;

		private int myInt;

		public TestThrowawayController() {
			counter++;
		}

		public void setMyInt(int myInt) {
			this.myInt = myInt;
		}

		public ModelAndView execute() throws Exception {
			return new ModelAndView("view" + this.myInt);
		}
	}

}