Retrieving The source code of a web.
Hi,
Sorry if this is not the place fro this post but I didn�t know where to put it.
I need to connect to a web page and get the page source code to retrieve the text it has to preprocess it and insert in my BD. Is there any way to do this in java?.
Thanks in advance,
HexDump.
Sure.
http://java.sun.com/docs/books/tutorial/networking/urls/readingURL.html
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DATA: http_client TYPE REF TO if_http_client .
DATA: w_string TYPE string ,
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16:24:08 Start of test
Source code has syntax error: /usr/sap/XD1/DVEBMGS30/j2ee/cluster/server0/./temp/classpath_resolver/Map283041f0edf311dd960b0003bacd2461/source/com/sap/xi/tf/_MM_INT012_INVOICE_DET_.java:598: 'class' or 'interface' expected public void TaxValues$(String[] a,String[] b,ResultList result,Container container){ ^ /usr/sap/XD1/DVEBMGS30/j2ee/cluster/server0/./temp/classpath_resolver/Map283041f0edf311dd960b0003bacd2461/source/com/sap/xi/tf/_MM_INT012_INVOICE_DET_.java:618: 'class' or 'interface' expected } ^ /usr/sap/XD1/DVEBMGS30/j2ee/cluster/server0/./temp/classpath_resolver/Map283041f0edf311dd960b0003bacd2461/source/com/sap/xi/tf/_MM_INT012_INVOICE_DET_.java:619: 'class' or 'interface' expected ^ 3 errors Source code has syntax error: /usr/sap/XD1/DVEBMGS30/j2ee/cluster/server0/./temp/classpath_resolver/Map283041f0edf311dd960b0003bacd2461/source/com/sap/xi/tf/_MM_INT012_INVOICE_DET_.java:598: 'class' or 'interface' expected public void TaxValues$(String[] a,String[] b,ResultList result,Container container){ ^ /usr/sap/XD1/DVEBMGS30/j2ee/cluster/server0/./temp/classpath_resolver/Map283041f0edf311dd960b0003bacd2461/source/com/sap/xi/tf/_MM_INT012_INVOICE_DET_.java:618: 'class' or 'interface' expected } ^ /usr/sap/XD1/DVEBMGS30/j2ee/cluster/server0/./temp/classpath_resolver/Map283041f0edf311dd960b0003bacd2461/source/com/sap/xi/tf/_MM_INT012_INVOICE_DET_.java:619: 'class' or 'interface' expected ^ 3 errors
16:24:11 End of test.Hi Potharaju,
Why don't you try this, that really works:
If you are using PI 7.1:
http://help.sap.com/saphelp_nwpi71/helpdata/en/33/1ec6ced273493a993a80c2301c03da/frameset.htm
If you are using XI 3.0, PI 7.0
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a03e7b02-eea4-2910-089f-8214c6d1b439
Try with these.
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Juan -
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-"Will code for foo."
package org.opencyc.webserver;
* Class WebServer is simple multithreaded HTTP server
* with CGI limited to a Cyc connection on default port 3600.
* <p>
import java.net.*;
import java.io.*;
import java.util.*;
import java.util.jar.*;
import java.text.*;
import org.opencyc.util.*;
public class WebServer extends Thread {
* Singleton WebServer instance.
public static WebServer current;
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protected static int DEFAULT_PORT = 80;
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protected static int DEFAULT_CYC_PORT = 3600;
* Default directory to serve files from on non-Windows OS.
protected static String DEFAULT_DIR = "/";
* Default directory to serve files from on Windows.
//protected static String DEFAULT_WIN_DIR = "C:\\";
protected static String DEFAULT_WIN_DIR = "k:\\opencyc\\run\\httpd\\htdocs";
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protected static final int CACHE_CAPACITY = 100;
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protected static long nbrFilesServed = 0;
* Number of files served from this web server that were found in the cache.
protected static long nbrCacheHits = 0;
* Server socket for accepting connections.
protected ServerSocket server;
* Directories to serve files from.
protected ArrayList dirs;
* Map from String (jar root) to JarFile[] (jar class path).
protected HashMap map;
* Webserver HTTP port.
protected int port;
* Cyc HTML host.
protected String cycHost = "localhost";
* Cyc HTML port.
protected int cycPort;
* Expand jar tress.
protected boolean trees;
* Requests flag.
protected boolean traceRequests;
* Constructs a WebServer object.
* @param port the port to use
* @param directories the directory to serve files from
* @param trees true if files within jar files should be served up
* @param traceRequests true if client's request text should be logged.
* @exception IOException if the listening socket cannot be opened, or problem opening jar files.
public WebServer() throws IOException {
getProperties();
server = new ServerSocket(port);
processDirectories();
* Class Task processes a single HTTP request.
protected class Task extends Thread {
* Socket for the incoming request.
protected Socket sock;
* Client socket to the Cyc KB HTML server.
protected Socket cycHtmlSocket;
* Output tcp stream.
protected DataOutputStream out;
* Contains the file request path for a not-found error message.
protected String notFoundPath;
* Contains the first line of a request message.
protected String methodLine;
* Contains the body of a POST method.
protected String bodyLine;
* Constructs a Task object.
* @param sock the socket assigned for this request.
public Task(Socket sock) {
this.sock = sock;
* Processes the HTTP request.
public void run() {
if (traceRequests)
Log.current.println("connection accepted from " + sock.getInetAddress());
notFoundPath = "";
try {
out = new DataOutputStream(sock.getOutputStream());
try {
getBytes();
catch (Exception e) {
Log.current.println("file not found: " + notFoundPath);
try {
out.writeBytes("HTTP/1.1 404 Not Found\r\n");
out.writeBytes("Server: Cyc WebServer\r\n");
out.writeBytes("Connection: close\r\n");
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out.writeBytes("<HTML><HEAD>\n");
out.writeBytes("<TITLE>404 Not Found</TITLE>\n");
out.writeBytes("</HEAD><BODY>\n");
out.writeBytes("<H1>404 - Not Found</H1>\n");
out.writeBytes("</BODY></HTML>");
out.flush();
catch (SocketException se) {
catch (Exception e) {
Log.current.printStackTrace(e);
finally {
try {
sock.close();
catch (IOException e) {
* Reads the HTTP request and obtains the response.
* @exception IOException when HTTP request has an invalid format.
private void getBytes() throws IOException {
// Below logic is complex because web browsers do not close the
// socket after sending the request, so must parse message to find
// the end.
BufferedReader in = new BufferedReader(new InputStreamReader(sock.getInputStream()));
ArrayList inBytes = new ArrayList(200);
int ch = 0;
boolean postMethod;
methodLine = in.readLine();
//if (traceRequests)
// Log.current.println("methodLine=" + methodLine);
bodyLine = "";
if (methodLine.startsWith("POST /"))
postMethod = true;
else
postMethod = false;
//if (traceRequests)
// Log.current.println("postMethod=" + postMethod);
int ch1 = -1;
int ch2 = -1;
int ch3 = -1;
int ch4 = -1;
// Read the HTTP request headers.
while (true) {
ch = in.read();
inBytes.add(new Integer(ch));
ch1 = ch2;
ch2 = ch3;
ch3 = ch4;
ch4 = ch;
if (ch1 == '\r' && ch2 == '\n' && ch3 == '\r' && ch4 == '\n')
break;
if ((! postMethod) &&
(! in.ready()) &&
ch1 == -1 &&
ch2 == -1 &&
ch3 == '\r' &&
ch4 == '\n') {
inBytes.add(new Integer('\r'));
inBytes.add(new Integer('\n'));
break;
byte[] byteArray = new byte[inBytes.size()];
for (int i = 0; i < inBytes.size(); i++) {
Integer ich = (Integer) inBytes.get(i);
byteArray[i] = ich.byteValue();
String headers = new String(byteArray);
if (postMethod) {
String lcHeaders = headers.toLowerCase();
int i = lcHeaders.indexOf("content-length: ");
String contentLength = lcHeaders.substring(i + 16);
int j = contentLength.indexOf("\r\n");
contentLength = contentLength.substring(0, j);
int bodyLen = (new Integer(contentLength)).intValue();
for (int k = 0; k < bodyLen; k++) {
bodyLine = bodyLine + (new Character((char) in.read())).toString();
String line = methodLine + "\r\n" + headers + bodyLine;
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Log.current.println(line);
if (postMethod)
processHttpPost();
else
if (line.startsWith("GET /"))
processHttpGet(line.substring(4));
else {
Log.current.println("Invalid request = " + line);
throw new IOException();
* Processes an HTTP GET method.
* @param httpGetPath the path of the file to get.
* @exception IOException if the file is not found.
private void processHttpGet(String httpGetPath) throws IOException {
int i = httpGetPath.indexOf(' ');
if (i > 0)
httpGetPath = httpGetPath.substring(0, i);
Log.current.println(methodLine + " from " + sock.getInetAddress().getHostName());
i = httpGetPath.indexOf("cg?");
if (i > 0) {
cycHtmlRequest(httpGetPath.substring(i + 3));
return;
notFoundPath = httpGetPath;
i = httpGetPath.indexOf('/');
if (i < 0 || map == null) {
if (map == null || httpGetPath.endsWith(".jar")) {
for (int j = 0; j < dirs.size(); j++) {
String dir = (String) dirs.get(j);
String nativePath = dir + httpGetPath;
nativePath = nativePath.replace('/', File.separatorChar);
if (fileCache.containsKey(nativePath)) {
writeDataBytes((byte[]) fileCache.get(nativePath));
Log.current.println("...cached");
nbrCacheHits++;
nbrFilesServed++;
return;
try {
File f = new File(nativePath);
byte[] fileBytes = getBytes(new FileInputStream(f), f.length());
writeDataBytes(fileBytes);
if (fileCache.size() >= CACHE_CAPACITY)
fileCache.clear();
fileCache.put(nativePath, fileBytes);
Log.current.println("...from " + nativePath);
nbrFilesServed++;
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catch (IOException e) {
throw new IOException();
String jar = httpGetPath.substring(0, i);
httpGetPath = httpGetPath.substring(i + 1);
JarFile[] jfs = (JarFile[]) map.get(jar);
if (jfs == null)
throw new IOException();
for (i = 0; i < jfs.length; i++) {
JarEntry je = jfs.getJarEntry(httpGetPath);
if (je == null)
continue;
writeDataBytes(getBytes(jfs[i].getInputStream(je), je.getSize()));
nbrFilesServed++;
return;
throw new IOException();
* Processes an HTTP POST method.
* @exception IOException if the file is not found.
private void processHttpPost() throws IOException {
Log.current.println("POST " + bodyLine + " from " + sock.getInetAddress().getHostName());
cycHtmlRequest(bodyLine);
* Reads the specified number of bytes and always close the stream.
* @param in the file to be read for subsequent downloading.
* @param length the number of bytes to read from the file.
* @return An array of bytes from the file.
* @exception IOException if an error occurs when processing the file.
private byte[] getBytes(InputStream in, long length) throws IOException {
DataInputStream din = new DataInputStream(in);
byte[] bytes = new byte[ (int) length];
try {
din.readFully(bytes);
finally {
din.close();
return bytes;
* Sends the HTML request to Cyc.
* @param cycPath the portion of the URL which is given to the Cyc HTML server.
private void cycHtmlRequest(String cycPath) {
String request = sock.getInetAddress().getHostName() + "&" + cycPath + "#";
System.out.println("request=" + request);
ArrayList bytes = new ArrayList(10000);
try {
cycHtmlSocket = new Socket(cycHost, cycPort);
System.out.println("cycHost=" + cycHost + " cycPort=" + cycPort);
BufferedReader cycIn = new BufferedReader(new InputStreamReader(cycHtmlSocket.getInputStream()));
PrintWriter cycOut = new PrintWriter(cycHtmlSocket.getOutputStream(), true);
cycOut.println(request);
cycOut.flush();
int ch = 0;
while (ch >= 0) {
ch = cycIn.read();
bytes.add(new Integer(ch));
catch (Exception e) {
Log.current.printStackTrace(e);
byte[] byteArray = new byte[bytes.size()];
for (int i = 0; i < bytes.size() - 1; i++) {
Integer ich = (Integer) bytes.get(i);
byteArray[i] = ich.byteValue();
try {
writeTextBytes(byteArray);
catch (Exception e) {
Log.current.println(e.getMessage());
* Responds to the HTTP client with data content from the requested URL.
* @param bytes the array of bytes from the URL.
* @exception IOException if there is an error writing to the HTTP client.
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out.writeBytes("HTTP/1.1 200 OK\r\n");
out.writeBytes("Server: Cyc WebServer\r\n");
out.writeBytes("Connection: close\r\n");
out.writeBytes("Content-Length: " + bytes.length + "\r\n");
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if (prefix.indexOf("<html>") > -1)
out.writeBytes("Content-Type: text/html\r\n\r\n");
else
out.writeBytes("Content-Type: application/java\r\n\r\n");
out.write(bytes);
out.flush();
* Respond to the HTTP client with text content from the requested URL.
* @param bytes the array of bytes from the URL.
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public void writeTextBytes(byte[] bytes) throws IOException {
out.writeBytes("HTTP/1.1 200 OK\r\n");
out.writeBytes("Server: Cyc WebServer\r\n");
out.writeBytes("Connection: close\r\n");
out.writeBytes("Content-Length: " + bytes.length + "\r\n");
out.writeBytes("Content-Type: text/html\r\n\r\n");
out.write(bytes);
out.flush();
* Gets properties governing the web server's behavior.
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port = DEFAULT_PORT;
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if (! portProperty.equalsIgnoreCase(""))
port = (new Integer(portProperty)).intValue();
Log.current.println("Listening on port " + port);
cycPort = DEFAULT_CYC_PORT;
String cycPortProperty = System.getProperty("org.opencyc.webserver.cycPort", "");
if (! cycPortProperty.equalsIgnoreCase(""))
cycPort = (new Integer(cycPortProperty)).intValue();
Log.current.println("Cyc connections directed to port " + cycPort);
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dirs = new ArrayList(3);
StringTokenizer st = new StringTokenizer(dirsProperty, ";", false);
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String dir = st.nextToken();
dirs.add(dir);
trees = false;
String treesProperty = System.getProperty("org.opencyc.webserver.trees", "");
if (! treesProperty.equalsIgnoreCase(""))
trees = true;
traceRequests = false;
String traceRequestsProperty = System.getProperty("org.opencyc.webserver.traceRequests", "");
if (! traceRequestsProperty.equalsIgnoreCase("")) {
traceRequests = true;
Log.current.println("tracing requests");
* Adds transitive Class-Path jars to jfs.
* @param jar the jar file
* @param jfs the list of jar files to serve.
* @param dir the jar file directory.
* @exception IOException if an I/O error has occurred with the jar file.
private void addJar(String jar, ArrayList jfs, String dir) throws IOException {
Log.current.println("Serving jar files from: " + dir + jar);
JarFile jf = new JarFile(dir + jar);
jfs.add(jf);
Manifest man = jf.getManifest();
if (man == null)
return;
Attributes attrs = man.getMainAttributes();
if (attrs == null)
return;
String val = attrs.getValue(Attributes.Name.CLASS_PATH);
if (val == null)
return;
dir = dir + jar.substring(0, jar.lastIndexOf(File.separatorChar) + 1);
StringTokenizer st = new StringTokenizer(val);
while (st.hasMoreTokens()) {
addJar(st.nextToken().replace('/', File.separatorChar), jfs, dir);
* Administrative accessor method that obtains list of directories from which files are served.
public ArrayList getDirs() {
return dirs;
* Administrative method that updates the list of directories from which files are served.
public synchronized void setDirs(ArrayList dirs) throws IOException {
this.dirs = dirs;
fileCache.clear();
processDirectories();
* Administrative accessor method that obtains number of files served.
* @return The number of files served.
public long getNbrFilesServed() {
return nbrFilesServed;
* Administrative accessor method that obtains number of files served from cache.
* @return The number of files served from the cache.
public long getNbrCacheHits() {
return nbrCacheHits;
* Administrative method that clears the file cache.
public synchronized void clearFileCache() {
Log.current.println("Clearing file cache");
fileCache.clear();
nbrFilesServed = 0;
nbrCacheHits = 0;
* Processes the directories from which files are served, expanding jar trees if
* directed.
* @exception IOException if problem occurs while processing the jar files.
private void processDirectories() throws IOException {
if (dirs.size() == 0)
if (File.separatorChar == '\\')
dirs.add(DEFAULT_WIN_DIR);
else
dirs.add(DEFAULT_DIR);
Iterator directories = dirs.iterator();
while (directories.hasNext())
Log.current.println("Serving from " + directories.next());
if (trees) {
map = new HashMap();
for (int j = 0; j < dirs.size(); j++) {
String dir = (String) dirs.get(j);
String[] files = new File(dir).list();
for (int i = 0; i < files.length; i++) {
String jar = files[i];
if (!jar.endsWith(".jar"))
continue;
ArrayList jfs = new ArrayList(1);
addJar(jar, jfs, dir);
map.put(jar.substring(0, jar.length() - 4), jfs.toArray(new JarFile[jfs.size()]));
* Provides the command line interface for creating an HTTP server.
* The properties are:
* <pre>
* org.opencyc.webserver.port=<HTTP listening port>
* </pre>
* which defaults to 80.
* <pre>
* org.opencyc.webserver.cycPort=<Cyc connection port>
* </pre>
* which defaults to 3600.
* <pre>
* org.opencyc.webserver.dirs=<path>;<path> ... ;<path>
* </pre>
* with the argument enclosed in quotes if any path contains an
* embedded space.
* The default directory on Windows is C:
* and the default on other systems is / the default
* can be overridden with this property. By default, all files
* under this directory (including all subdirectories) are served
* up via HTTP. If the pathname of a file is <var>path</var> relative
* to the top-level directory, then the file can be downloaded using
* the URL
* <pre>
* http://<var>host</var>:<var>port</var>/<var>path</var>
* </pre>
* Caching of file contents is performed.
* <pre>
* org.opencyc.util.log=all
* </pre>
* If the all value is given, then all attempts to download files
* are output.
* <pre>
* org.opencyc.webserver.traceRequests
* </pre>
* If this property has any value, then the client HTTP requests are
* output.<p>
* <pre>
* org.opencyc.webserver.trees
* </pre>
* This property can be used to serve up individual files stored
* within jar files in addition to the files that are served up by
* default. If the property has any value, the server finds all jar files
* in the top-level directory (not in subdirectories). For each
* jar file, if the name of the jar file is <var>name</var>.jar, then any
* individual file named <var>file</var> within that jar file (or within
* the jar or zip files referenced transitively in the Class-Path manifest
* attribute, can be downloaded using a URL of the form:
* <pre>
* http://<var>host</var>:<var>port</var>/<var>name</var>/<var>file</var>
* </pre>
* When this property has any value, an open file descriptor and cached
* information are held for each jar file, for the life of the process.
* @param args an unused array of command line arguments.
public static void main(String[] args) {
Log.makeLog();
System.out.println("OpenCyc Web Server");
try {
// Launch thread to accept HTTP connections.
current = new WebServer();
current.start();
catch (IOException e) {
e.printStackTrace();
* Just keep looping, spawning a new thread for each incoming request.
public void run() {
try {
while (true) {
// Launch thread to process one HTTP request.
new Task(server.accept()).start();
catch (IOException e) {
e.printStackTrace();JLundan,
I want to thank you for responding to the thread I started on the forum at java.sun.com. Your solution to my problem of needing to print the code of the html pages that the file I included generates was just what I was looking for. However, I have some further questions to ask, if you don't mind. To clarify my task I should say that your rephrasing of the problem is accurate: "You wan't to display the contents of the HTML file that the web server produces in response of client's request?"
Yes, this is what I need to do, but also it needs to display the source code of that html file that the server produces in response to the client's request. Also, in this case, I am the client requesting that the server return some html file, and I'm not sure where the server is. But the webserver.java file that I shared on the forum is on my local machine. I was wondering if I could modify this webserver.java file at my home so that any html file the server returns to me would automatically display the source code. This is a school project of mine and I am stuck on this one thing here.
Further, where would I put the "foo.html" file so it can be written to?
FileOuputStream fos = new FileOutputStream("foo.html");
fos.write(bytes);
fos.close();
Thanks so much for your help. I look forward to your response, at your convenience.
Regards -
ABAP WD, Read the source code of a html page
Hi all,
I have the URL link of .jsp page and I want to get the source code generated by this page to extract some data for my web dynpro.
How do i solve this?
ThanksHi Antonio,
not sure if i understand the question properly.
You want to read html content of http site rendered via jsp.
You can use cl_http_client
to write a simple http client tool.
This tool opens the page. The html content is available to this class.
You can extract the content here.
See the attribute 'response' after making a call.
regards
Phil. -
If I Use JavaFX to Create a Game Do I Have to Release the Source Code?
Hello,
I've asked this question before, but I just thought I would try it again now
that version 1.0 is out.
If I Use JavaFX to Create a Game Do I Have to Release the Source Code?
Thanx in advance.Could you please point me to a resource describing "the JavaFX Runtime license"? I'm trying to find answers to the following questions:
1. I'd like to use Scenario.jar from the JavaFX project in a desktop app that is not using Webstart and is not an applet. Will I be able to ship the jar with my software?
2. Can JavaFX applications be distributed as commercial software in the absence of a Web connection?
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Where to get the source code of the owa_cookie.send procedure?
I want to know where you get the source code of the owa_cookie.send procedure? I can only get the header of this package from ...\RDBMS\ADMIN\pubcook.sql. Could you paste the whole source code here and then I can modify it to set the 'httponly' attribute? I also have a problem that after changing the package, how to use the package I changed? Does it still a system package here? Or it has been changed to an user-defined package in database and I need to execute the package on the database for the web server?
Thank you!Hi Arun,
I am unable to see the pcui_gp components in the DTR ,I require this in order to get the source code of one of its component.
Can you please tell me the step by step procedure getting those pcui_gp components from J2ee engine to the dtr or NWDI.
If there are any documents on pcui_gp components exclusively please do forward to my mail id [email protected]
Thansk and Regards,
Anand. -
Where to find the source code for MenuTreeListPreviewLayoutController
Dear All!
I am desparately searching for the source code of the MenuTreeListPreviewLayoutController. I would like to
implement a similar Layout Controller than the above mentioned one, but cannot find the code.
Is anybody able to help me?
Cheers and thanks in advance
IngoHi Ingo,
you should be able to find and decompile the class com.sapportals.wcm.rendering.layout.cm.MenuTreeListPreviewLayoutController in the JAR km.appl.ui.flex.control_core.jar. This JAR is located under ...<irj-root>\WEB-INF\portal\portalapps\com.sap.km.cm.ui.flex\private\lib
Hope this helps,
Robert
PS: If you have problems to find it, gimme a mail and I'll send you the decompiled version.
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