public InputStream loadInputStream() throws IOException {
InputStream in = null;
ServletContextResource resource = new ServletContextResource(servletContext, path);
{
if (resource.exists()) {
in = resource.getInputStream();
}
}
return in;
}
/**
* Creates an {@link InputStream} to the requested path. This will look in both the defined
* classpath and within the META-INF of the application.
*
* @param path The path to generate an {@link InputStream} to.
* @return The {@link InputStream} for the requested resource and <code>null</code> if the
* resource could not be found.
* @throws IOException Thrown when an error occurs attempting to generate an {@link InputStream}
*/
public InputStream getResourceInputStream(String path) throws IOException {
InputStream in = null;
// TODO: Check the sentinel isn't returned...
ResourceInfo resourceInfo = getCachedResourceInfo(path);
if (resourceInfo == getResourceInfoSentinel()) {
// No action required - the ResourceInfoSentinel indicates that we've previously searched
// for this path and the resource couldn't be found.
} else if (resourceInfo != null) {
in = resourceInfo.getInputStream();
} else {
// Generate a list of paths that should be checked for the current mode...
List<String> pathsToCheck = generatePathsForClientMode(path);
Iterator<String> paths;
if (this.webFrameworkConfigElement.isRemoteResourceResolvingEnabled()) {
paths = pathsToCheck.iterator();
while (in == null && paths.hasNext()) {
String currPath = paths.next();
in = this.remoteResourcesHandler.getRemoteResource(currPath);
if (in != null) {
addResourceInfoToCache(path, new RemoteResource(currPath));
in = this.getCachedResourceInfo(path).getInputStream();
}
}
}
paths = pathsToCheck.iterator();
while (in == null && paths.hasNext()) {
String currPath = paths.next();
Resource r = applicationContext.getResource("classpath*:" + currPath);
if (r != null && r.exists()) {
addResourceInfoToCache(path, new ApplicationContextResource(currPath));
in = this.getCachedResourceInfo(path).getInputStream();
}
}
paths = pathsToCheck.iterator();
while (in == null && paths.hasNext()) {
String currPath = paths.next();
if (currPath.startsWith("/")) {
currPath = currPath.substring(1);
}
URL resourceUrl = ClassUtils.getDefaultClassLoader().getResource("META-INF/" + currPath);
if (resourceUrl != null) {
addResourceInfoToCache(path, new ClassLoaderResource(currPath));
in = this.getCachedResourceInfo(path).getInputStream();
}
}
paths = pathsToCheck.iterator();
while (this.servletContext != null && in == null && paths.hasNext()) {
final String p = paths.next();
// servlet resource paths cannot start with a relative operator - they should always begin
// at the root - note that ServletContextResource() will prepend "/" automatically to all
// paths
// and "/../something" is invalid for most modern containers
if (!StringUtils.cleanPath(p).startsWith("..")) {
ServletContextResource resource = new ServletContextResource(this.servletContext, p);
{
if (resource.exists()) {
addResourceInfoToCache(path, new ServletContextRes(p));
in = this.getCachedResourceInfo(path).getInputStream();
}
}
}
}
}
// If the input stream is still null, add a sentinel...
if (in == null) {
addResourceInfoToCache(path, getResourceInfoSentinel());
}
return in;
}