NanoHTTPD的官方代码如下
import java.io.BufferedReader;import java.io.ByteArrayInputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintStream;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;import java.net.URLEncoder;import java.util.Date;import java.util.Enumeration;import java.util.Vector;import java.util.Hashtable;import java.util.Locale;import java.util.Properties;import java.util.StringTokenizer;import java.util.TimeZone;import java.io.ByteArrayOutputStream;import java.io.FileOutputStream;/** * A simple, tiny, nicely embeddable HTTP 1.0 (partially 1.1) server in Java * * NanoHTTPD version 1.25, * Copyright © 2001,2005-2012 Jarno Elonen (elonen@iki.fi, http://iki.fi/elonen/) * and Copyright © 2010 Konstantinos Togias (info@ktogias.gr, http://ktogias.gr) * *
Features + limitations:
* * - Only one Java file
* - Java 1.1 compatible
* - Released as open source, Modified BSD licence
* - No fixed config files, logging, authorization etc. (Implement yourself if you need them.)
* - Supports parameter parsing of GET and POST methods (+ rudimentary PUT support in 1.25)
* - Supports both dynamic content and file serving
* - Supports file upload (since version 1.2, 2010)
* - Supports partial content (streaming)
* - Supports ETags
* - Never caches anything
* - Doesn't limit bandwidth, request time or simultaneous connections
* - Default code serves files and shows all HTTP parameters and headers
* - File server supports directory listing, index.html and index.htm
* - File server supports partial content (streaming)
* - File server supports ETags
* - File server does the 301 redirection trick for directories without '/'
* - File server supports simple skipping for files (continue download)
* - File server serves also very long files without memory overhead
* - Contains a built-in list of most common mime types
* - All header names are converted lowercase so they don't vary between browsers/clients
* *
* *
Ways to use:
* * - Run as a standalone app, serves files and shows requests
* - Subclass serve() and embed to your own program
* - Call serveFile() from serve() with your own base directory
* *
* * See the end of the source file for distribution license * (Modified BSD licence) */public class NanoHTTPD{ // ================================================== // API parts // ================================================== /** * Override this to customize the server.
* * (By default, this delegates to serveFile() and allows directory listing.) * * @param uri Percent-decoded URI without parameters, for example "/index.cgi" * @param method "GET", "POST" etc. * @param parms Parsed, percent decoded parameters from URI and, in case of POST, data. * @param header Header entries, percent decoded * @return HTTP response, see class Response for details */ public Response serve( String uri, String method, Properties header, Properties parms, Properties files ) { myOut.println( method + " '" + uri + "' " ); Enumeration e = header.propertyNames(); while ( e.hasMoreElements()) { String value = (String)e.nextElement(); myOut.println( " HDR: '" + value + "' = '" + header.getProperty( value ) + "'" ); } e = parms.propertyNames(); while ( e.hasMoreElements()) { String value = (String)e.nextElement(); myOut.println( " PRM: '" + value + "' = '" + parms.getProperty( value ) + "'" ); } e = files.propertyNames(); while ( e.hasMoreElements()) { String value = (String)e.nextElement(); myOut.println( " UPLOADED: '" + value + "' = '" + files.getProperty( value ) + "'" ); } return serveFile( uri, header, myRootDir, true ); } /** * HTTP response. * Return one of these from serve(). */ public class Response { /** * Default constructor: response = HTTP_OK, data = mime = 'null' */ public Response() { this.status = HTTP_OK; } /** * Basic constructor. */ public Response( String status, String mimeType, InputStream data ) { this.status = status; this.mimeType = mimeType; this.data = data; } /** * Convenience method that makes an InputStream out of * given text. */ public Response( String status, String mimeType, String txt ) { this.status = status; this.mimeType = mimeType; try { this.data = new ByteArrayInputStream( txt.getBytes("UTF-8")); } catch ( java.io.UnsupportedEncodingException uee ) { uee.printStackTrace(); } } /** * Adds given line to the header. */ public void addHeader( String name, String value ) { header.put( name, value ); } /** * HTTP status code after processing, e.g. "200 OK", HTTP_OK */ public String status; /** * MIME type of content, e.g. "text/html" */ public String mimeType; /** * Data of the response, may be null. */ public InputStream data; /** * Headers for the HTTP response. Use addHeader() * to add lines. */ public Properties header = new Properties(); } /** * Some HTTP response status codes */ public static final String HTTP_OK = "200 OK", HTTP_PARTIALCONTENT = "206 Partial Content", HTTP_RANGE_NOT_SATISFIABLE = "416 Requested Range Not Satisfiable", HTTP_REDIRECT = "301 Moved Permanently", HTTP_NOTMODIFIED = "304 Not Modified", HTTP_FORBIDDEN = "403 Forbidden", HTTP_NOTFOUND = "404 Not Found", HTTP_BADREQUEST = "400 Bad Request", HTTP_INTERNALERROR = "500 Internal Server Error", HTTP_NOTIMPLEMENTED = "501 Not Implemented"; /** * Common mime types for dynamic content */ public static final String MIME_PLAINTEXT = "text/plain", MIME_HTML = "text/html", MIME_DEFAULT_BINARY = "application/octet-stream", MIME_XML = "text/xml"; // ================================================== // Socket & server code // ================================================== /** * Starts a HTTP server to given port.
* Throws an IOException if the socket is already in use */ public NanoHTTPD( int port, File wwwroot ) throws IOException { myTcpPort = port; this.myRootDir = wwwroot; myServerSocket = new ServerSocket( myTcpPort ); myThread = new Thread( new Runnable() { public void run() { try { while( true ) new HTTPSession( myServerSocket.accept()); } catch ( IOException ioe ) {} } }); myThread.setDaemon( true ); myThread.start(); } /** * Stops the server. */ public void stop() { try { myServerSocket.close(); myThread.join(); } catch ( IOException ioe ) {} catch ( InterruptedException e ) {} } /** * Starts as a standalone file server and waits for Enter. */ public static void main( String[] args ) { myOut.println( "NanoHTTPD 1.25 (C) 2001,2005-2011 Jarno Elonen and (C) 2010 Konstantinos Togias\n" + "(Command line options: [-p port] [-d root-dir] [--licence])\n" ); // Defaults int port = 80; File wwwroot = new File(".").getAbsoluteFile(); // Show licence if requested for ( int i=0; i
0) { rlen += read; splitbyte = findHeaderEnd(buf, rlen); if (splitbyte > 0) break; read = is.read(buf, rlen, bufsize - rlen); } } // Create a BufferedReader for parsing the header. ByteArrayInputStream hbis = new ByteArrayInputStream(buf, 0, rlen); BufferedReader hin = new BufferedReader( new InputStreamReader( hbis )); Properties pre = new Properties(); Properties parms = new Properties(); Properties header = new Properties(); Properties files = new Properties(); // Decode the header into parms and header java properties decodeHeader(hin, pre, parms, header); String method = pre.getProperty("method"); String uri = pre.getProperty("uri"); long size = 0x7FFFFFFFFFFFFFFFl; String contentLength = header.getProperty("content-length"); if (contentLength != null) { try { size = Integer.parseInt(contentLength); } catch (NumberFormatException ex) {} } // Write the part of body already read to ByteArrayOutputStream f ByteArrayOutputStream f = new ByteArrayOutputStream(); if (splitbyte < rlen) f.write(buf, splitbyte, rlen-splitbyte); // While Firefox sends on the first read all the data fitting // our buffer, Chrome and Opera send only the headers even if // there is data for the body. We do some magic here to find // out whether we have already consumed part of body, if we // have reached the end of the data to be sent or we should // expect the first byte of the body at the next read. if (splitbyte < rlen) size -= rlen-splitbyte+1; else if (splitbyte==0 || size == 0x7FFFFFFFFFFFFFFFl) size = 0; // Now read all the body and write it to f buf = new byte[512]; while ( rlen >= 0 && size > 0 ) { rlen = is.read(buf, 0, 512); size -= rlen; if (rlen > 0) f.write(buf, 0, rlen); } // Get the raw body as a byte [] byte [] fbuf = f.toByteArray(); // Create a BufferedReader for easily reading it as string. ByteArrayInputStream bin = new ByteArrayInputStream(fbuf); BufferedReader in = new BufferedReader( new InputStreamReader(bin)); // If the method is POST, there may be parameters // in data section, too, read it: if ( method.equalsIgnoreCase( "POST" )) { String contentType = ""; String contentTypeHeader = header.getProperty("content-type"); StringTokenizer st = new StringTokenizer( contentTypeHeader , "; " ); if ( st.hasMoreTokens()) { contentType = st.nextToken(); } if (contentType.equalsIgnoreCase("multipart/form-data")) { // Handle multipart/form-data if ( !st.hasMoreTokens()) sendError( HTTP_BADREQUEST, "BAD REQUEST: Content type is multipart/form-data but boundary missing. Usage: GET /example/file.html" ); String boundaryExp = st.nextToken(); st = new StringTokenizer( boundaryExp , "=" ); if (st.countTokens() != 2) sendError( HTTP_BADREQUEST, "BAD REQUEST: Content type is multipart/form-data but boundary syntax error. Usage: GET /example/file.html" ); st.nextToken(); String boundary = st.nextToken(); decodeMultipartData(boundary, fbuf, in, parms, files); } else { // Handle application/x-www-form-urlencoded String postLine = ""; char pbuf[] = new char[512]; int read = in.read(pbuf); while ( read >= 0 && !postLine.endsWith("\r\n") ) { postLine += String.valueOf(pbuf, 0, read); read = in.read(pbuf); } postLine = postLine.trim(); decodeParms( postLine, parms ); } } if ( method.equalsIgnoreCase( "PUT" )) files.put("content", saveTmpFile( fbuf, 0, f.size())); // Ok, now do the serve() Response r = serve( uri, method, header, parms, files ); if ( r == null ) sendError( HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: Serve() returned a null response." ); else sendResponse( r.status, r.mimeType, r.header, r.data ); in.close(); is.close(); } catch ( IOException ioe ) { try { sendError( HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage()); } catch ( Throwable t ) {} } catch ( InterruptedException ie ) { // Thrown by sendError, ignore and exit the thread. } } /** * Decodes the sent headers and loads the data into * java Properties' key - value pairs **/ private void decodeHeader(BufferedReader in, Properties pre, Properties parms, Properties header) throws InterruptedException { try { // Read the request line String inLine = in.readLine(); if (inLine == null) return; StringTokenizer st = new StringTokenizer( inLine ); if ( !st.hasMoreTokens()) sendError( HTTP_BADREQUEST, "BAD REQUEST: Syntax error. Usage: GET /example/file.html" ); String method = st.nextToken(); pre.put("method", method); if ( !st.hasMoreTokens()) sendError( HTTP_BADREQUEST, "BAD REQUEST: Missing URI. Usage: GET /example/file.html" ); String uri = st.nextToken(); // Decode parameters from the URI int qmi = uri.indexOf( '?' ); if ( qmi >= 0 ) { decodeParms( uri.substring( qmi+1 ), parms ); uri = decodePercent( uri.substring( 0, qmi )); } else uri = decodePercent(uri); // If there's another token, it's protocol version, // followed by HTTP headers. Ignore version but parse headers. // NOTE: this now forces header names lowercase since they are // case insensitive and vary by client. if ( st.hasMoreTokens()) { String line = in.readLine(); while ( line != null && line.trim().length() > 0 ) { int p = line.indexOf( ':' ); if ( p >= 0 ) header.put( line.substring(0,p).trim().toLowerCase(), line.substring(p+1).trim()); line = in.readLine(); } } pre.put("uri", uri); } catch ( IOException ioe ) { sendError( HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage()); } } /** * Decodes the Multipart Body data and put it * into java Properties' key - value pairs. **/ private void decodeMultipartData(String boundary, byte[] fbuf, BufferedReader in, Properties parms, Properties files) throws InterruptedException { try { int[] bpositions = getBoundaryPositions(fbuf,boundary.getBytes()); int boundarycount = 1; String mpline = in.readLine(); while ( mpline != null ) { if (mpline.indexOf(boundary) == -1) sendError( HTTP_BADREQUEST, "BAD REQUEST: Content type is multipart/form-data but next chunk does not start with boundary. Usage: GET /example/file.html" ); boundarycount++; Properties item = new Properties(); mpline = in.readLine(); while (mpline != null && mpline.trim().length() > 0) { int p = mpline.indexOf( ':' ); if (p != -1) item.put( mpline.substring(0,p).trim().toLowerCase(), mpline.substring(p+1).trim()); mpline = in.readLine(); } if (mpline != null) { String contentDisposition = item.getProperty("content-disposition"); if (contentDisposition == null) { sendError( HTTP_BADREQUEST, "BAD REQUEST: Content type is multipart/form-data but no content-disposition info found. Usage: GET /example/file.html" ); } StringTokenizer st = new StringTokenizer( contentDisposition , "; " ); Properties disposition = new Properties(); while ( st.hasMoreTokens()) { String token = st.nextToken(); int p = token.indexOf( '=' ); if (p!=-1) disposition.put( token.substring(0,p).trim().toLowerCase(), token.substring(p+1).trim()); } String pname = disposition.getProperty("name"); pname = pname.substring(1,pname.length()-1); String value = ""; if (item.getProperty("content-type") == null) { while (mpline != null && mpline.indexOf(boundary) == -1) { mpline = in.readLine(); if ( mpline != null) { int d = mpline.indexOf(boundary); if (d == -1) value+=mpline; else value+=mpline.substring(0,d-2); } } } else { if (boundarycount> bpositions.length) sendError( HTTP_INTERNALERROR, "Error processing request" ); int offset = stripMultipartHeaders(fbuf, bpositions[boundarycount-2]); String path = saveTmpFile(fbuf, offset, bpositions[boundarycount-1]-offset-4); files.put(pname, path); value = disposition.getProperty("filename"); value = value.substring(1,value.length()-1); do { mpline = in.readLine(); } while (mpline != null && mpline.indexOf(boundary) == -1); } parms.put(pname, value); } } } catch ( IOException ioe ) { sendError( HTTP_INTERNALERROR, "SERVER INTERNAL ERROR: IOException: " + ioe.getMessage()); } } /** * Find byte index separating header from body. * It must be the last byte of the first two sequential new lines. **/ private int findHeaderEnd(final byte[] buf, int rlen) { int splitbyte = 0; while (splitbyte + 3 < rlen) { if (buf[splitbyte] == '\r' && buf[splitbyte + 1] == '\n' && buf[splitbyte + 2] == '\r' && buf[splitbyte + 3] == '\n') return splitbyte + 4; splitbyte++; } return 0; } /** * Find the byte positions where multipart boundaries start. **/ public int[] getBoundaryPositions(byte[] b, byte[] boundary) { int matchcount = 0; int matchbyte = -1; Vector matchbytes = new Vector(); for (int i=0; i 0) { String tmpdir = System.getProperty("java.io.tmpdir"); try { File temp = File.createTempFile("NanoHTTPD", "", new File(tmpdir)); OutputStream fstream = new FileOutputStream(temp); fstream.write(b, offset, len); fstream.close(); path = temp.getAbsolutePath(); } catch (Exception e) { // Catch exception if any myErr.println("Error: " + e.getMessage()); } } return path; } /** * It returns the offset separating multipart file headers * from the file's data. **/ private int stripMultipartHeaders(byte[] b, int offset) { int i = 0; for (i=offset; i * For example: "an+example%20string" -> "an example string" */ private String decodePercent( String str ) throws InterruptedException { try { StringBuffer sb = new StringBuffer(); for( int i=0; i 0) { int read = data.read( buff, 0, ( (pending>theBufferSize) ? theBufferSize : pending )); if (read <= 0) break; out.write( buff, 0, read ); pending -= read; } } out.flush(); out.close(); if ( data != null ) data.close(); } catch( IOException ioe ) { // Couldn't write? No can do. try { mySocket.close(); } catch( Throwable t ) {} } } private Socket mySocket; } /** * URL-encodes everything between "/"-characters. * Encodes spaces as '%20' instead of '+'. */ private String encodeUri( String uri ) { String newUri = ""; StringTokenizer st = new StringTokenizer( uri, "/ ", true ); while ( st.hasMoreTokens()) { String tok = st.nextToken(); if ( tok.equals( "/" )) newUri += "/"; else if ( tok.equals( " " )) newUri += "%20"; else { newUri += URLEncoder.encode( tok ); // For Java 1.4 you'll want to use this instead: // try { newUri += URLEncoder.encode( tok, "UTF-8" ); } catch ( java.io.UnsupportedEncodingException uee ) {} } } return newUri; } private int myTcpPort; private final ServerSocket myServerSocket; private Thread myThread; private File myRootDir; // ================================================== // File server code // ================================================== /** * Serves file from homeDir and its' subdirectories (only). * Uses only URI, ignores all headers and HTTP parameters. */ public Response serveFile( String uri, Properties header, File homeDir, boolean allowDirectoryListing ) { Response res = null; // Make sure we won't die of an exception later if ( !homeDir.isDirectory()) res = new Response( HTTP_INTERNALERROR, MIME_PLAINTEXT, "INTERNAL ERRROR: serveFile(): given homeDir is not a directory." ); if ( res == null ) { // Remove URL arguments uri = uri.trim().replace( File.separatorChar, '/' ); if ( uri.indexOf( '?' ) >= 0 ) uri = uri.substring(0, uri.indexOf( '?' )); // Prohibit getting out of current directory if ( uri.startsWith( ".." ) || uri.endsWith( ".." ) || uri.indexOf( "../" ) >= 0 ) res = new Response( HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: Won't serve ../ for security reasons." ); } File f = new File( homeDir, uri ); if ( res == null && !f.exists()) res = new Response( HTTP_NOTFOUND, MIME_PLAINTEXT, "Error 404, file not found." ); // List the directory, if necessary if ( res == null && f.isDirectory()) { // Browsers get confused without '/' after the // directory, send a redirect. if ( !uri.endsWith( "/" )) { uri += "/"; res = new Response( HTTP_REDIRECT, MIME_HTML, "Redirected: " + uri + ""); res.addHeader( "Location", uri ); } if ( res == null ) { // First try index.html and index.htm if ( new File( f, "index.html" ).exists()) f = new File( homeDir, uri + "/index.html" ); else if ( new File( f, "index.htm" ).exists()) f = new File( homeDir, uri + "/index.htm" ); // No index file, list the directory if it is readable else if ( allowDirectoryListing && f.canRead() ) { String[] files = f.list(); String msg = " Directory " + uri + "
"; if ( uri.length() > 1 ) { String u = uri.substring( 0, uri.length()-1 ); int slash = u.lastIndexOf( '/' ); if ( slash >= 0 && slash < u.length()) msg += "
.."; } if (files!=null) { for ( int i=0; i
" + files[i] + ""; // Show file size if ( curFile.isFile()) { long len = curFile.length(); msg += " ("; if ( len < 1024 ) msg += len + " bytes"; else if ( len < 1024 * 1024 ) msg += len/1024 + "." + (len%1024/10%100) + " KB"; else msg += len/(1024*1024) + "." + len%(1024*1024)/10%100 + " MB"; msg += ")"; } msg += " "; if ( dir ) msg += ""; } } msg += ""; res = new Response( HTTP_OK, MIME_HTML, msg ); } else { res = new Response( HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: No directory listing." ); } } } try { if ( res == null ) { // Get MIME type from file name extension, if possible String mime = null; int dot = f.getCanonicalPath().lastIndexOf( '.' ); if ( dot >= 0 ) mime = (String)theMimeTypes.get( f.getCanonicalPath().substring( dot + 1 ).toLowerCase()); if ( mime == null ) mime = MIME_DEFAULT_BINARY; // Calculate etag String etag = Integer.toHexString((f.getAbsolutePath() + f.lastModified() + "" + f.length()).hashCode()); // Support (simple) skipping: long startFrom = 0; long endAt = -1; String range = header.getProperty( "range" ); if ( range != null ) { if ( range.startsWith( "bytes=" )) { range = range.substring( "bytes=".length()); int minus = range.indexOf( '-' ); try { if ( minus > 0 ) { startFrom = Long.parseLong( range.substring( 0, minus )); endAt = Long.parseLong( range.substring( minus+1 )); } } catch ( NumberFormatException nfe ) {} } } // Change return code and add Content-Range header when skipping is requested long fileLen = f.length(); if (range != null && startFrom >= 0) { if ( startFrom >= fileLen) { res = new Response( HTTP_RANGE_NOT_SATISFIABLE, MIME_PLAINTEXT, "" ); res.addHeader( "Content-Range", "bytes 0-0/" + fileLen); res.addHeader( "ETag", etag); } else { if ( endAt < 0 ) endAt = fileLen-1; long newLen = endAt - startFrom + 1; if ( newLen < 0 ) newLen = 0; final long dataLen = newLen; FileInputStream fis = new FileInputStream( f ) { public int available() throws IOException { return (int)dataLen; } }; fis.skip( startFrom ); res = new Response( HTTP_PARTIALCONTENT, mime, fis ); res.addHeader( "Content-Length", "" + dataLen); res.addHeader( "Content-Range", "bytes " + startFrom + "-" + endAt + "/" + fileLen); res.addHeader( "ETag", etag); } } else { if (etag.equals(header.getProperty("if-none-match"))) res = new Response( HTTP_NOTMODIFIED, mime, ""); else { res = new Response( HTTP_OK, mime, new FileInputStream( f )); res.addHeader( "Content-Length", "" + fileLen); res.addHeader( "ETag", etag); } } } } catch( IOException ioe ) { res = new Response( HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: Reading file failed." ); } res.addHeader( "Accept-Ranges", "bytes"); // Announce that the file server accepts partial content requestes return res; } /** * Hashtable mapping (String)FILENAME_EXTENSION -> (String)MIME_TYPE */ private static Hashtable theMimeTypes = new Hashtable(); static { StringTokenizer st = new StringTokenizer( "css text/css "+ "htm text/html "+ "html text/html "+ "xml text/xml "+ "txt text/plain "+ "asc text/plain "+ "gif image/gif "+ "jpg image/jpeg "+ "jpeg image/jpeg "+ "png image/png "+ "mp3 audio/mpeg "+ "m3u audio/mpeg-url " + "mp4 video/mp4 " + "ogv video/ogg " + "flv video/x-flv " + "mov video/quicktime " + "swf application/x-shockwave-flash " + "js application/javascript "+ "pdf application/pdf "+ "doc application/msword "+ "ogg application/x-ogg "+ "zip application/octet-stream "+ "exe application/octet-stream "+ "class application/octet-stream " ); while ( st.hasMoreTokens()) theMimeTypes.put( st.nextToken(), st.nextToken()); } private static int theBufferSize = 16 * 1024; // Change these if you want to log to somewhere else than stdout protected static PrintStream myOut = System.out; protected static PrintStream myErr = System.err; /** * GMT date formatter */ private static java.text.SimpleDateFormat gmtFrmt; static { gmtFrmt = new java.text.SimpleDateFormat( "E, d MMM yyyy HH:mm:ss 'GMT'", Locale.US); gmtFrmt.setTimeZone(TimeZone.getTimeZone("GMT")); } /** * The distribution licence */ private static final String LICENCE = "Copyright (C) 2001,2005-2011 by Jarno Elonen \n"+ "and Copyright (C) 2010 by Konstantinos Togias \n"+ "\n"+ "Redistribution and use in source and binary forms, with or without\n"+ "modification, are permitted provided that the following conditions\n"+ "are met:\n"+ "\n"+ "Redistributions of source code must retain the above copyright notice,\n"+ "this list of conditions and the following disclaimer. Redistributions in\n"+ "binary form must reproduce the above copyright notice, this list of\n"+ "conditions and the following disclaimer in the documentation and/or other\n"+ "materials provided with the distribution. The name of the author may not\n"+ "be used to endorse or promote products derived from this software without\n"+ "specific prior written permission. \n"+ " \n"+ "THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n"+ "IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\n"+ "OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n"+ "IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,\n"+ "INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\n"+ "NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"+ "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"+ "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"+ "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"+ "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.";} 这代码有BUG
1 public Response serveFile(String uri, Properties header, File homeDir,
boolean allowDirectoryListing)
里面有点问题
最重要的是没有考虑uri是null的情况,应该是url解码异常造成的
另一个我们给它设置了网页编码
改为
public Response serveFile( String uri, Properties header, File homeDir, boolean allowDirectoryListing ) { Response res = null; // Make sure we won't die of an exception later if ( !homeDir.isDirectory()) res = new Response( HTTP_INTERNALERROR, MIME_PLAINTEXT, "INTERNAL ERRROR: serveFile(): given homeDir is not a directory." ); if ( uri == null ){ res = new Response( HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: Parameter ERROR." ); return res; } if ( res == null ) { // Remove URL arguments uri = uri.trim().replace( File.separatorChar, '/' ); if ( uri.indexOf( '?' ) >= 0 ) uri = uri.substring(0, uri.indexOf( '?' )); // Prohibit getting out of current directory if ( uri.startsWith( ".." ) || uri.endsWith( ".." ) || uri.indexOf( "../" ) >= 0 ) res = new Response( HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: Won't serve ../ for security reasons." ); } File f = new File( homeDir, uri ); if ( res == null && !f.exists()) res = new Response( HTTP_NOTFOUND, MIME_PLAINTEXT, "Error 404, file not found." ); // List the directory, if necessary if ( res == null && f.isDirectory()) { // Browsers get confused without '/' after the // directory, send a redirect. if ( !uri.endsWith( "/" )) { uri += "/"; res = new Response( HTTP_REDIRECT, MIME_HTML, " uriRedirected: " + uri + ""); res.addHeader( "Location", uri ); } if ( res == null ) { // First try index.html and index.htm if ( new File( f, "index.html" ).exists()) f = new File( homeDir, uri + "/index.html" ); else if ( new File( f, "index.htm" ).exists()) f = new File( homeDir, uri + "/index.htm" ); // No index file, list the directory if it is readable else if ( allowDirectoryListing && f.canRead() ) { String[] files = f.list(); String msg = " 文件服务Directory " + uri + "
"; if ( uri.length() > 1 ) { String u = uri.substring( 0, uri.length()-1 ); int slash = u.lastIndexOf( '/' ); if ( slash >= 0 && slash < u.length()) msg += ".."; } if (files!=null) { for ( int i=0; i " + files[i] + ""; // Show file size if ( curFile.isFile()) { long len = curFile.length(); msg += " ("; if ( len < 1024 ) msg += len + " bytes"; else if ( len < 1024 * 1024 ) msg += len/1024 + "." + (len%1024/10%100) + " KB"; else msg += len/(1024*1024) + "." + len%(1024*1024)/10%100 + " MB"; msg += ")"; } msg += " "; if ( dir ) msg += ""; } } msg += ""; res = new Response( HTTP_OK, MIME_HTML, msg ); } else { res = new Response( HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: No directory listing." ); } } } try { if ( res == null ) { // Get MIME type from file name extension, if possible String mime = null; int dot = f.getCanonicalPath().lastIndexOf( '.' ); if ( dot >= 0 ) mime = (String)theMimeTypes.get( f.getCanonicalPath().substring( dot + 1 ).toLowerCase()); if ( mime == null ) mime = MIME_DEFAULT_BINARY; // Calculate etag String etag = Integer.toHexString((f.getAbsolutePath() + f.lastModified() + "" + f.length()).hashCode()); // Support (simple) skipping: long startFrom = 0; long endAt = -1; String range = header.getProperty( "range" ); if ( range != null ) { if ( range.startsWith( "bytes=" )) { range = range.substring( "bytes=".length()); int minus = range.indexOf( '-' ); try { if ( minus > 0 ) { startFrom = Long.parseLong( range.substring( 0, minus )); endAt = Long.parseLong( range.substring( minus+1 )); } } catch ( NumberFormatException nfe ) {} } } // Change return code and add Content-Range header when skipping is requested long fileLen = f.length(); if (range != null && startFrom >= 0) { if ( startFrom >= fileLen) { res = new Response( HTTP_RANGE_NOT_SATISFIABLE, MIME_PLAINTEXT, "" ); res.addHeader( "Content-Range", "bytes 0-0/" + fileLen); res.addHeader( "ETag", etag); } else { if ( endAt < 0 ) endAt = fileLen-1; long newLen = endAt - startFrom + 1; if ( newLen < 0 ) newLen = 0; final long dataLen = newLen; FileInputStream fis = new FileInputStream( f ) { public int available() throws IOException { return (int)dataLen; } }; fis.skip( startFrom ); res = new Response( HTTP_PARTIALCONTENT, mime, fis ); res.addHeader( "Content-Length", "" + dataLen); res.addHeader( "Content-Range", "bytes " + startFrom + "-" + endAt + "/" + fileLen); res.addHeader( "ETag", etag); } } else { if (etag.equals(header.getProperty("if-none-match"))) res = new Response( HTTP_NOTMODIFIED, mime, ""); else { res = new Response( HTTP_OK, mime, new FileInputStream( f )); res.addHeader( "Content-Length", "" + fileLen); res.addHeader( "ETag", etag); } } } } catch( IOException ioe ) { res = new Response( HTTP_FORBIDDEN, MIME_PLAINTEXT, "FORBIDDEN: Reading file failed." ); } res.addHeader( "Accept-Ranges", "bytes"); // Announce that the file server accepts partial content requestes return res; } 2这个问题是,系统多次用到了UTF-8编码,utf-8贯穿真个程序了的,我在测试时,文件出现了中文名,结果造成中文名的文件无法访问!
仔细研究发现url解码的方法中出现了ans2解码的算法,这里不得其解,可能外国人都用english吧,所以一直都没有发现这个问题,也或许是我理解错了,望各位前辈见谅,小生不才了,好了废话不多说,这个方法在
class HTTPSession中,方法为private String decodePercent(String str)
这个方法我改成这样的了
private String decodePercent(String str) throws InterruptedException { //System.out.println(str); try { StringBuffer sb = new StringBuffer(); for (int i = 0; i < str.length(); i++) { char c = str.charAt(i); if(c=='+') sb.append(' '); else sb.append(c); } return URLDecoder.decode(sb.toString(), "utf-8"); } catch (Exception e) { sendError(HTTP_BADREQUEST, "BAD REQUEST: Bad percent-encoding."); return null; } } 到此NanoHTTPD类修改完成
怎么个使用法呢?
先把原来类中的main方法去掉!!
Activity中使用
准备这几个私有成员,其中hostaddres是用来显示服务器的IP的,这个IP可能是局域网也可能是外网,看你用什么的网络,这个服务器主要是连接第三方路由器使用,当然开放自己的热点也是可以的,在使用外网的情况没测试过,基本行不通的吧
public class MainActivity extends Activity { NanoHTTPD nanoHTTPD; int port = 8080; File wwwroot; String hostaddres; }
startServer()开始
public void startServer() { try { nanoHTTPD = new NanoHTTPD(port, wwwroot); } catch (IOException ioe) { } } stopServer()结束
public void stopServer() { if (nanoHTTPD != null) nanoHTTPD.stop(); } 怎么知道服务器的地址呢?使用下面的方法,返回形式为:192.168.1.100
public String getLocalIpAddress() { try { // 遍历网络接口 Enumeration infos = NetworkInterface .getNetworkInterfaces(); while (infos.hasMoreElements()) { // 获取网络接口 NetworkInterface niFace = infos.nextElement(); Enumeration enumIpAddr = niFace.getInetAddresses(); while (enumIpAddr.hasMoreElements()) { InetAddress mInetAddress = enumIpAddr.nextElement(); // 所获取的网络地址不是127.0.0.1时返回得得到的IP if (!mInetAddress.isLoopbackAddress() && InetAddressUtils.isIPv4Address(mInetAddress .getHostAddress())) { return mInetAddress.getHostAddress().toString(); } } } } catch (SocketException e) { } return null; } 好了,其他那些弄界面,界面美化的活就自己动手丰衣足食吧!
