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XXX: Remove another old servlet class.

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Harald Kuhr
2021-05-09 18:08:56 +02:00
parent f63a33d541
commit 94eac2d6e5
2 changed files with 0 additions and 421 deletions
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132
servlet/src/main/java/com/twelvemonkeys/servlet/StaticContentServlet.java
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/*
* Copyright (c) 2011, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.servlet;
import com.twelvemonkeys.io.FileUtil;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* A minimal servlet that can serve static files. Also from outside the web application.
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @author last modified by $Author: haraldk$
* @version $Id: StaticContentServlet.java,v 1.0 12.12.11 15:09 haraldk Exp$
*
* @see #setRoot(java.io.File)
*/
public final class StaticContentServlet extends HttpServlet {
private File root;
/**
* Configures the file system {@code root} for this servlet.
* If {@code root} is a directory, files will be served relative to the directory.
* If {@code root} is a file, only this file may be served
*
* @param root the file system root.
*/
@InitParam(name = "root")
public void setRoot(final File root) {
this.root = root;
}
@Override
public void init() throws ServletException {
if (root == null) {
throw new ServletConfigException("File system root not configured, check 'root' init-param");
}
else if (!root.exists()) {
throw new ServletConfigException(
String.format("File system root '%s' does not exist, check 'root' init-param", root.getAbsolutePath())
);
}
log(String.format("Serving %s '%s'", root.isDirectory() ? "files from directory" : "single file", root.getAbsolutePath()));
}
@Override
protected long getLastModified(final HttpServletRequest request) {
File file = findFileForRequest(request);
return file.exists() ? file.lastModified() : -1L;
}
@Override
protected void doGet(final HttpServletRequest request, final HttpServletResponse response) throws IOException {
File file = findFileForRequest(request);
if (file.isFile() && file.canRead()) {
// Normal file, all ok
response.setStatus(HttpServletResponse.SC_OK);
String contentType = getServletContext().getMimeType(file.getName());
response.setContentType(contentType != null ? contentType : "application/octet-stream");
if (file.length() <= Integer.MAX_VALUE) {
response.setContentLength((int) file.length());
}
else {
response.setHeader("Content-Length", String.valueOf(file.length()));
}
response.setDateHeader("Last-Modified", file.lastModified());
InputStream in = new FileInputStream(file);
try {
FileUtil.copy(in, response.getOutputStream());
}
finally {
in.close();
}
}
else {
if (file.exists()) {
// Attempted directory listing or non-readable file
response.sendError(HttpServletResponse.SC_FORBIDDEN, request.getRequestURI());
}
else {
// No such file
response.sendError(HttpServletResponse.SC_NOT_FOUND, request.getRequestURI());
}
}
}
private File findFileForRequest(final HttpServletRequest request) {
String relativePath = request.getPathInfo();
return relativePath != null ? new File(root, relativePath) : root;
}
}