/*
* Copyright 2002-2007 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.mock.web;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import javax.activation.FileTypeMap;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
import org.springframework.web.util.WebUtils;
/**
* Mock implementation of the {@link javax.servlet.ServletContext} interface.
*
* <p>Used for testing the Spring web framework; only rarely necessary for testing
* application controllers. As long as application components don't explicitly
* access the ServletContext, ClassPathXmlApplicationContext or
* FileSystemXmlApplicationContext can be used to load the context files for testing,
* even for DispatcherServlet context definitions.
*
* <p>For setting up a full WebApplicationContext in a test environment, you can
* use XmlWebApplicationContext (or GenericWebApplicationContext), passing in an
* appropriate MockServletContext instance. You might want to configure your
* MockServletContext with a FileSystemResourceLoader in that case, to make your
* resource paths interpreted as relative file system locations.
*
* <p>A common setup is to point your JVM working directory to the root of your
* web application directory, in combination with filesystem-based resource loading.
* This allows to load the context files as used in the web application, with
* relative paths getting interpreted correctly. Such a setup will work with both
* FileSystemXmlApplicationContext (which will load straight from the file system)
* and XmlWebApplicationContext with an underlying MockServletContext (as long as
* the MockServletContext has been configured with a FileSystemResourceLoader).
*
* @author Rod Johnson
* @author Juergen Hoeller
* @since 1.0.2
* @see #MockServletContext(org.springframework.core.io.ResourceLoader)
* @see org.springframework.web.context.support.XmlWebApplicationContext
* @see org.springframework.web.context.support.GenericWebApplicationContext
* @see org.springframework.context.support.ClassPathXmlApplicationContext
* @see org.springframework.context.support.FileSystemXmlApplicationContext
*/
public class MockServletContext implements ServletContext {
private static final String TEMP_DIR_SYSTEM_PROPERTY = "java.io.tmpdir";
private final Log logger = LogFactory.getLog(getClass());
private final ResourceLoader resourceLoader;
private final String resourceBasePath;
private String contextPath = "";
private final Map contexts = new HashMap();
private final Properties initParameters = new Properties();
private final Hashtable attributes = new Hashtable();
private String servletContextName = "MockServletContext";
/**
* Create a new MockServletContext, using no base path and a
* DefaultResourceLoader (i.e. the classpath root as WAR root).
* @see org.springframework.core.io.DefaultResourceLoader
*/
public MockServletContext() {
this("", null);
}
/**
* Create a new MockServletContext, using a DefaultResourceLoader.
* @param resourceBasePath the WAR root directory (should not end with a slash)
* @see org.springframework.core.io.DefaultResourceLoader
*/
public MockServletContext(String resourceBasePath) {
this(resourceBasePath, null);
}
/**
* Create a new MockServletContext, using the specified ResourceLoader
* and no base path.
* @param resourceLoader the ResourceLoader to use (or null for the default)
*/
public MockServletContext(ResourceLoader resourceLoader) {
this("", resourceLoader);
}
/**
* Create a new MockServletContext.
* @param resourceBasePath the WAR root directory (should not end with a slash)
* @param resourceLoader the ResourceLoader to use (or null for the default)
*/
public MockServletContext(String resourceBasePath, ResourceLoader resourceLoader) {
this.resourceLoader = (resourceLoader != null ? resourceLoader : new DefaultResourceLoader());
this.resourceBasePath = (resourceBasePath != null ? resourceBasePath : "");
// Use JVM temp dir as ServletContext temp dir.
String tempDir = System.getProperty(TEMP_DIR_SYSTEM_PROPERTY);
if (tempDir != null) {
this.attributes.put(WebUtils.TEMP_DIR_CONTEXT_ATTRIBUTE, new File(tempDir));
}
}
/**
* Build a full resource location for the given path,
* prepending the resource base path of this MockServletContext.
* @param path the path as specified
* @return the full resource path
*/
protected String getResourceLocation(String path) {
if (!path.startsWith("/")) {
path = "/" + path;
}
return this.resourceBasePath + path;
}
public void setContextPath(String contextPath) {
this.contextPath = (contextPath != null ? contextPath : "");
}
/* This is a Servlet API 2.5 method. */
public String getContextPath() {
return this.contextPath;
}
public void registerContext(String contextPath, ServletContext context) {
this.contexts.put(contextPath, context);
}
public ServletContext getContext(String contextPath) {
if (this.contextPath.equals(contextPath)) {
return this;
}
return (ServletContext) this.contexts.get(contextPath);
}
public int getMajorVersion() {
return 2;
}
public int getMinorVersion() {
return 5;
}
public String getMimeType(String filePath) {
return MimeTypeResolver.getMimeType(filePath);
}
public Set getResourcePaths(String path) {
String actualPath = (path.endsWith("/") ? path : path + "/");
Resource resource = this.resourceLoader.getResource(getResourceLocation(actualPath));
try {
File file = resource.getFile();
String[] fileList = file.list();
if (ObjectUtils.isEmpty(fileList)) {
return null;
}
Set resourcePaths = new LinkedHashSet(fileList.length);
for (int i = 0; i < fileList.length; i++) {
String resultPath = actualPath + fileList[i];
if (resource.createRelative(fileList[i]).getFile().isDirectory()) {
resultPath += "/";
}
resourcePaths.add(resultPath);
}
return resourcePaths;
}
catch (IOException ex) {
logger.warn("Couldn't get resource paths for " + resource, ex);
return null;
}
}
public URL getResource(String path) throws MalformedURLException {
Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
if (!resource.exists()) {
return null;
}
try {
return resource.getURL();
}
catch (MalformedURLException ex) {
throw ex;
}
catch (IOException ex) {
logger.warn("Couldn't get URL for " + resource, ex);
return null;
}
}
public InputStream getResourceAsStream(String path) {
Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
if (!resource.exists()) {
return null;
}
try {
return resource.getInputStream();
}
catch (IOException ex) {
logger.warn("Couldn't open InputStream for " + resource, ex);
return null;
}
}
public RequestDispatcher getRequestDispatcher(String path) {
if (!path.startsWith("/")) {
throw new IllegalArgumentException("RequestDispatcher path at ServletContext level must start with '/'");
}
return new MockRequestDispatcher(path);
}
public RequestDispatcher getNamedDispatcher(String path) {
return null;
}
public Servlet getServlet(String name) {
return null;
}
public Enumeration getServlets() {
return Collections.enumeration(Collections.EMPTY_SET);
}
public Enumeration getServletNames() {
return Collections.enumeration(Collections.EMPTY_SET);
}
public void log(String message) {
logger.info(message);
}
public void log(Exception ex, String message) {
logger.info(message, ex);
}
public void log(String message, Throwable ex) {
logger.info(message, ex);
}
public String getRealPath(String path) {
Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
try {
return resource.getFile().getAbsolutePath();
}
catch (IOException ex) {
logger.warn("Couldn't determine real path of resource " + resource, ex);
return null;
}
}
public String getServerInfo() {
return "MockServletContext";
}
public String getInitParameter(String name) {
Assert.notNull(name, "Parameter name must not be null");
return this.initParameters.getProperty(name);
}
public void addInitParameter(String name, String value) {
Assert.notNull(name, "Parameter name must not be null");
this.initParameters.setProperty(name, value);
}
public Enumeration getInitParameterNames() {
return this.initParameters.keys();
}
public Object getAttribute(String name) {
Assert.notNull(name, "Attribute name must not be null");
return this.attributes.get(name);
}
public Enumeration getAttributeNames() {
return this.attributes.keys();
}
public void setAttribute(String name, Object value) {
Assert.notNull(name, "Attribute name must not be null");
if (value != null) {
this.attributes.put(name, value);
}
else {
this.attributes.remove(name);
}
}
public void removeAttribute(String name) {
Assert.notNull(name, "Attribute name must not be null");
this.attributes.remove(name);
}
public void setServletContextName(String servletContextName) {
this.servletContextName = servletContextName;
}
public String getServletContextName() {
return this.servletContextName;
}
/**
* Inner factory class used to just introduce a Java Activation Framework
* dependency when actually asked to resolve a MIME type.
*/
private static class MimeTypeResolver {
public static String getMimeType(String filePath) {
return FileTypeMap.getDefaultFileTypeMap().getContentType(filePath);
}
}
}