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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.servlet.imageservlet; |
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import org.litesoft.commonfoundation.typeutils.*; |
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import org.litesoft.configuration.*; |
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import javax.servlet.*; |
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import javax.servlet.http.*; |
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import java.io.*; |
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public class ImageServlet extends HttpServlet { |
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private static final long serialVersionUID = 1L; |
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private static final String IMAGES_BASE_PATH = "ImagesBasePath"; |
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private File mImagesBasePath = null; |
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@Override |
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public void init() |
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throws ServletException { |
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super.init(); |
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if ( !Configuration.isInstantiated() ) { |
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new ServerConfiguration( new MapConfigDataAccessorFactory( "No Config File - Testing?", IMAGES_BASE_PATH, "/TestImages" ) ); |
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} |
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String zImagesBasePath = Configuration.getStringRequired( IMAGES_BASE_PATH ); |
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File zDir = new File( zImagesBasePath ); |
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if ( !zDir.exists() ) { |
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if ( !zDir.mkdir() ) { |
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throw new ServletException( "Unable to create Image Base Path (" + zImagesBasePath + ") Directory!" ); |
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} |
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} |
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if ( !zDir.isDirectory() ) { |
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throw new ServletException( "Image Base Path (" + zImagesBasePath + "), not a Directory!" ); |
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} |
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if ( !zDir.canWrite() ) { |
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throw new ServletException( "Image Base Path (" + zImagesBasePath + ") Directory NOT writable!" ); |
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} |
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mImagesBasePath = zDir; |
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} |
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private String normalize( String pPathInfo ) |
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throws FileNotFoundException { |
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if ( pPathInfo != null ) { |
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// switch any separators and insure that we start w/ a '/' |
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pPathInfo = "/" + Strings.noSpaces( pPathInfo.replace( '\\', '/' ) ); |
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// change all "//"s to '/' |
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for ( int at; -1 != (at = pPathInfo.indexOf( "//" )); ) { |
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pPathInfo = pPathInfo.substring( 0, at + 1 ) + pPathInfo.substring( at + 2 ); |
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} |
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// change all "/./"s to '/' |
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for ( int at; -1 != (at = pPathInfo.indexOf( "/./" )); ) { |
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pPathInfo = pPathInfo.substring( 0, at + 1 ) + pPathInfo.substring( at + 3 ); |
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} |
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if ( !pPathInfo.contains( "/../" ) ) // No Up Dirs! |
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{ |
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while ( pPathInfo.startsWith( "/" ) ) { |
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pPathInfo = pPathInfo.substring( 1 ); |
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} |
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File zFile = new File( mImagesBasePath, pPathInfo ); |
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if ( zFile.isFile() ) { |
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if ( zFile.canRead() ) { |
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return zFile.getAbsolutePath(); |
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} |
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throw new FileNotFoundException( "Can't Read: " + pPathInfo + " -> " + zFile.getAbsolutePath() ); |
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} |
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} |
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} |
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throw new FileNotFoundException( "No Resource of: " + pPathInfo ); |
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} |
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// This method is called by the servlet container to process a GET request. |
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public void doGet( HttpServletRequest pReq, HttpServletResponse pResp ) |
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throws IOException { |
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// http://localhost:8080/Images/Fred.jpg -> /Fred.jpg |
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String filename = normalize( pReq.getPathInfo() ); |
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ServletContext sc = getServletContext(); |
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// Get the MIME type of the image |
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String mimeType = sc.getMimeType( filename.toLowerCase() ); |
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if ( mimeType == null ) { |
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sc.log( "Could not get MIME type of " + filename ); |
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pResp.setStatus( HttpServletResponse.SC_INTERNAL_SERVER_ERROR ); |
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return; |
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} |
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// Set content type |
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pResp.setContentType( mimeType ); |
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// Set content size |
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File file = new File( filename ); |
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pResp.setContentLength( (int) file.length() ); |
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// Open the file and output streams |
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InputStream in = new FileInputStream( file ); |
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try { |
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OutputStream out = pResp.getOutputStream(); |
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try { |
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// Copy the contents of the file to the output stream |
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byte[] buf = new byte[1024]; |
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for ( int count; (count = in.read( buf )) > 0; ) { |
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out.write( buf, 0, count ); |
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} |
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Closeable zCloseable = out; |
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out = null; |
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zCloseable.close(); |
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} |
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finally { |
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if ( out != null ) { |
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try { |
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out.close(); |
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} |
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catch ( IOException e ) { |
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// Whatever |
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} |
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} |
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} |
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} |
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finally { |
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try { |
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in.close(); |
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} |
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catch ( IOException e ) { |
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// Whatever |
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} |
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} |
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} |
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} |
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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.servlet.imageservlet; |
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4 |
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import org.litesoft.commonfoundation.typeutils.*; |
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import org.litesoft.configuration.*; |
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import javax.servlet.*; |
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import javax.servlet.http.*; |
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import java.io.*; |
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public class ImageServlet extends HttpServlet { |
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private static final long serialVersionUID = 1L; |
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private static final String IMAGES_BASE_PATH = "ImagesBasePath"; |
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private File mImagesBasePath = null; |
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@Override |
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public void init() |
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throws ServletException { |
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super.init(); |
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if ( !Configuration.isInstantiated() ) { |
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new ServerConfiguration( new MapConfigDataAccessorFactory( "No Config File - Testing?", IMAGES_BASE_PATH, "/TestImages" ) ); |
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} |
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String zImagesBasePath = Configuration.getStringRequired( IMAGES_BASE_PATH ); |
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File zDir = new File( zImagesBasePath ); |
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if ( !zDir.exists() ) { |
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if ( !zDir.mkdir() ) { |
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throw new ServletException( "Unable to create Image Base Path (" + zImagesBasePath + ") Directory!" ); |
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} |
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} |
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if ( !zDir.isDirectory() ) { |
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throw new ServletException( "Image Base Path (" + zImagesBasePath + "), not a Directory!" ); |
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} |
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if ( !zDir.canWrite() ) { |
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throw new ServletException( "Image Base Path (" + zImagesBasePath + ") Directory NOT writable!" ); |
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} |
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mImagesBasePath = zDir; |
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} |
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private String normalize( String pPathInfo ) |
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throws FileNotFoundException { |
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if ( pPathInfo != null ) { |
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// switch any separators and insure that we start w/ a '/' |
|
45 |
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pPathInfo = "/" + Strings.noSpaces( pPathInfo.replace( '\\', '/' ) ); |
|
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// change all "//"s to '/' |
|
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for ( int at; -1 != (at = pPathInfo.indexOf( "//" )); ) { |
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pPathInfo = pPathInfo.substring( 0, at + 1 ) + pPathInfo.substring( at + 2 ); |
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} |
|
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// change all "/./"s to '/' |
|
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for ( int at; -1 != (at = pPathInfo.indexOf( "/./" )); ) { |
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pPathInfo = pPathInfo.substring( 0, at + 1 ) + pPathInfo.substring( at + 3 ); |
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} |
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if ( !pPathInfo.contains( "/../" ) ) // No Up Dirs! |
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{ |
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while ( pPathInfo.startsWith( "/" ) ) { |
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pPathInfo = pPathInfo.substring( 1 ); |
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} |
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File zFile = new File( mImagesBasePath, pPathInfo ); |
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if ( zFile.isFile() ) { |
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if ( zFile.canRead() ) { |
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return zFile.getAbsolutePath(); |
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} |
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throw new FileNotFoundException( "Can't Read: " + pPathInfo + " -> " + zFile.getAbsolutePath() ); |
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} |
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} |
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} |
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throw new FileNotFoundException( "No Resource of: " + pPathInfo ); |
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} |
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// This method is called by the servlet container to process a GET request. |
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public void doGet( HttpServletRequest pReq, HttpServletResponse pResp ) |
|
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throws IOException { |
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// http://localhost:8080/Images/Fred.jpg -> /Fred.jpg |
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String filename = normalize( pReq.getPathInfo() ); |
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ServletContext sc = getServletContext(); |
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// Get the MIME type of the image |
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String mimeType = sc.getMimeType( filename.toLowerCase() ); |
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if ( mimeType == null ) { |
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sc.log( "Could not get MIME type of " + filename ); |
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pResp.setStatus( HttpServletResponse.SC_INTERNAL_SERVER_ERROR ); |
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return; |
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} |
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// Set content type |
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pResp.setContentType( mimeType ); |
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// Set content size |
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File file = new File( filename ); |
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pResp.setContentLength( (int) file.length() ); |
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// Open the file and output streams |
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InputStream in = new FileInputStream( file ); |
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try { |
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OutputStream out = pResp.getOutputStream(); |
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try { |
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// Copy the contents of the file to the output stream |
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byte[] buf = new byte[1024]; |
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for ( int count; (count = in.read( buf )) > 0; ) { |
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out.write( buf, 0, count ); |
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} |
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Closeable zCloseable = out; |
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out = null; |
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zCloseable.close(); |
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} |
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finally { |
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if ( out != null ) { |
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try { |
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out.close(); |
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} |
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catch ( IOException e ) { |
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// Whatever |
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} |
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} |
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} |
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} |
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finally { |
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try { |
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in.close(); |
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} |
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catch ( IOException e ) { |
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// Whatever |
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} |
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} |
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} |
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} |