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View Full Version : Need help in mod_rewrite



yuvi
08-17-2010, 12:41 PM
Hello all,

I am doing my project in jsp. I need to use mod_rewrite concept in my project in order to view public user profile as in facebook.

i.e. I wrote the code to retrieve the user's public info from the database by passing userid as an argument as follows.

http://localhost/myproject/user/publicprofile.jsp?userid=username

But I have to rewrite the above to

http://localhost/myproject/username for simplicity.

I found that it can be done by using mod_rewrite.
But mod_rewrite works only in apache server not in tomcat server.
So I integrate Apache2.2 with Tomcat 6.0.29 using the tomcat connector.

I configured httpd.conf as follows:




#
# 3rd party modules
#
LoadModule autoindex_color_module modules/mod_autoindex_color.so

<IfModule !mpm_netware_module>
<IfModule !mpm_winnt_module>
#
# If you wish httpd to run as a different user or group, you must run
# httpd as root initially and it will switch.
#
# User/Group: The name (or #number) of the user/group to run httpd as.
# It is usually good practice to create a dedicated user and group for
# running httpd, as with most system services.
#
User daemon
Group daemon

</IfModule>
</IfModule>

# 'Main' server configuration
#
# The directives in this section set up the values used by the 'main'
# server, which responds to any requests that aren't handled by a
# <VirtualHost> definition. These values also provide defaults for
# any <VirtualHost> containers you may define later in the file.
#
# All of these directives may appear inside <VirtualHost> containers,
# in which case these default settings will be overridden for the
# virtual host being defined.
#

#
# ServerAdmin: Your address, where problems with the server should be
# e-mailed. This address appears on some server-generated pages, such
# as error documents. e.g. admin@your-domain.com
#
ServerAdmin postmaster@localhost

#
# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
ServerName localhost:80

#
# DocumentRoot: The directory out of which you will serve your
# documents. By default, all requests are taken from this directory, but
# symbolic links and aliases may be used to point to other locations.
#
DocumentRoot "C:/xampp/htdocs"

#
# Each directory to which Apache has access can be configured with respect
# to which services and features are allowed and/or disabled in that
# directory (and its subdirectories).
#
# First, we configure the "default" to be a very restrictive set of
# features.
#
<Directory />
Options FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
</Directory>

#
# Note that from this point forward you must specifically allow
# particular features to be enabled - so if something's not working as
# you might expect, make sure that you have specifically enabled it
# below.
#

#
# This should be changed to whatever you set DocumentRoot to.
#
<Directory "C:/xampp/htdocs">
#
# Possible values for the Options directive are "None", "All",
# or any combination of:
# Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
#
# Note that "MultiViews" must be named *explicitly* --- "Options All"
# doesn't give it to you.
#
# The Options directive is both complicated and important. Please see
# http://httpd.apache.org/docs/2.2/mod/core.html#options
# for more information.
#
Options Indexes FollowSymLinks Includes ExecCGI

#
# AllowOverride controls what directives may be placed in .htaccess files.
# It can be "All", "None", or any combination of the keywords:
# Options FileInfo AuthConfig Limit
#
AllowOverride All

#
# Controls who can get stuff from this server.
#
Order allow,deny
Allow from all

</Directory>

#
# DirectoryIndex: sets the file that Apache will serve if a directory
# is requested.
#
<IfModule dir_module>
DirectoryIndex index.php index.pl index.cgi index.asp index.shtml index.html index.htm \
default.php default.pl default.cgi default.asp default.shtml default.html default.htm \
home.php home.pl home.cgi home.asp home.shtml home.html home.htm
</IfModule>

#
# The following lines prevent .htaccess and .htpasswd files from being
# viewed by Web clients.
#
<FilesMatch "^\.ht">
Order allow,deny
Deny from all
Satisfy All
</FilesMatch>

#
# ErrorLog: The location of the error log file.
# If you do not specify an ErrorLog directive within a <VirtualHost>
# container, error messages relating to that virtual host will be
# logged here. If you *do* define an error logfile for a <VirtualHost>
# container, that host's errors will be logged there and not here.
#
ErrorLog "logs/error.log"

#ScriptLog "logs/cgi.log"

#
# LogLevel: Control the number of messages logged to the error_log.
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
#
LogLevel warn

<IfModule log_config_module>
#
# The following directives define some format nicknames for use with
# a CustomLog directive (see below).
#
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %b" common

<IfModule logio_module>
# You need to enable mod_logio.c to use %I and %O
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
</IfModule>

#
# The location and format of the access logfile (Common Logfile Format).
# If you do not define any access logfiles within a <VirtualHost>
# container, they will be logged here. Contrariwise, if you *do*
# define per-<VirtualHost> access logfiles, transactions will be
# logged therein and *not* in this file.
#
#CustomLog "logs/access.log" common

#
# If you prefer a logfile with access, agent, and referer information
# (Combined Logfile Format) you can use the following directive.
#
CustomLog "logs/access.log" combined
</IfModule>

<IfModule alias_module>
#
# Redirect: Allows you to tell clients about documents that used to
# exist in your server's namespace, but do not anymore. The client
# will make a new request for the document at its new location.
# Example:
# Redirect permanent /foo http://localhost/bar

#
# Alias: Maps web paths into filesystem paths and is used to
# access content that does not live under the DocumentRoot.
# Example:
# Alias /webpath /full/filesystem/path
#
# If you include a trailing / on /webpath then the server will
# require it to be present in the URL. You will also likely
# need to provide a <Directory> section to allow access to
# the filesystem path.

#
# ScriptAlias: This controls which directories contain server scripts.
# ScriptAliases are essentially the same as Aliases, except that
# documents in the target directory are treated as applications and
# run by the server when requested rather than as documents sent to the
# client. The same rules about trailing "/" apply to ScriptAlias
# directives as to Alias.
#
ScriptAlias /cgi-bin/ "C:/xampp/cgi-bin/"

</IfModule>

<IfModule cgid_module>
#
# ScriptSock: On threaded servers, designate the path to the UNIX
# socket used to communicate with the CGI daemon of mod_cgid.
#
#Scriptsock "logs/cgi.sock"
</IfModule>

#
# "C:/xampp/cgi-bin" should be changed to whatever your ScriptAliased
# CGI directory exists, if you have that configured.
#
<Directory "C:/xampp/cgi-bin">
AllowOverride None
Options None
Order allow,deny
Allow from all
</Directory>

<Directory "C:/Apache/apache-tomcat-6.0.29/webapps/user">
Order allow,deny
Allow from all
</Directory>

#
# DefaultType: the default MIME type the server will use for a document
# if it cannot otherwise determine one, such as from filename extensions.
# If your server contains mostly text or HTML documents, "text/plain" is
# a good value. If most of your content is binary, such as applications
# or images, you may want to use "application/octet-stream" instead to
# keep browsers from trying to display binary files as though they are
# text.
#
DefaultType text/plain

<IfModule mime_module>
#
# TypesConfig points to the file containing the list of mappings from
# filename extension to MIME-type.
#
TypesConfig "conf/mime.types"

#
# AddType allows you to add to or override the MIME configuration
# file specified in TypesConfig for specific file types.
#
#AddType application/x-gzip .tgz
#
# AddEncoding allows you to have certain browsers uncompress
# information on the fly. Note: Not all browsers support this.
#
#AddEncoding x-compress .Z
#AddEncoding x-gzip .gz .tgz
#
# If the AddEncoding directives above are commented-out, then you
# probably should define those extensions to indicate media types:
#
AddType application/x-compress .Z
AddType application/x-gzip .gz .tgz

#
# AddHandler allows you to map certain file extensions to "handlers":
# actions unrelated to filetype. These can be either built into the server
# or added with the Action directive (see below)
#
# To use CGI scripts outside of ScriptAliased directories:
# (You will also need to add "ExecCGI" to the "Options" directive.)
#
AddHandler cgi-script .cgi .pl .asp

# For type maps (negotiated resources):
#AddHandler type-map var

#
# Filters allow you to process content before it is sent to the client.
#
# To parse .shtml files for server-side includes (SSI):
# (You will also need to add "Includes" to the "Options" directive.)
#
AddType text/html .shtml
AddOutputFilter INCLUDES .shtml
</IfModule>

<IfModule mime_magic_module>
#
# The mod_mime_magic module allows the server to use various hints from the
# contents of the file itself to determine its type. The MIMEMagicFile
# directive tells the module where the hint definitions are located.
#
MIMEMagicFile "conf/magic"
</IfModule>

#
# Customizable error responses come in three flavors:
# 1) plain text 2) local redirects 3) external redirects
#
# Some examples:
#ErrorDocument 500 "The server made a boo boo."
#ErrorDocument 404 /missing.html
#ErrorDocument 404 "/cgi-bin/missing_handler.pl"
#ErrorDocument 402 http://localhost/subscription_info.html
#

#
# EnableMMAP and EnableSendfile: On systems that support it,
# memory-mapping or the sendfile syscall is used to deliver
# files. This usually improves server performance, but must
# be turned off when serving from networked-mounted
# filesystems or if support for these functions is otherwise
# broken on your system.
#
#EnableMMAP off
#EnableSendfile off

# Supplemental configuration
#
# The configuration files in the conf/extra/ directory can be
# included to add extra features or to modify the default configuration of
# the server, or you may simply copy their contents here and change as
# necessary.

# XAMPP specific settings
Include "conf/extra/httpd-xampp.conf"

# Perl settings
Include "conf/extra/perl.conf"

# Server-pool management (MPM specific)
Include "conf/extra/httpd-mpm.conf"

# Multi-language error messages
Include "conf/extra/httpd-multilang-errordoc.conf"

# Fancy directory listings
Include "conf/extra/httpd-autoindex.conf"

# Language settings
Include "conf/extra/httpd-languages.conf"

# User home directories
Include "conf/extra/httpd-userdir.conf"

# Real-time info on requests and configuration
Include "conf/extra/httpd-info.conf"

# Virtual hosts
Include "conf/extra/httpd-vhosts.conf"

# Distributed authoring and versioning (WebDAV)
Include "conf/extra/httpd-dav.conf"

# Implements a proxy/gateway for Apache.
Include "conf/extra/httpd-proxy.conf"

# Various default settings
Include "conf/extra/httpd-default.conf"

# Secure (SSL/TLS) connections
Include "conf/extra/httpd-ssl.conf"
#
# Note: The following must must be present to support
# starting without SSL on platforms with no /dev/random equivalent
# but a statically compiled-in mod_ssl.
#
<IfModule ssl_module>
SSLRandomSeed startup builtin
SSLRandomSeed connect builtin
SSLSessionCache "shmcb:logs/ssl.scache(512000)"
SSLSessionCacheTimeout 300
</IfModule>

LoadModule jk_module "C:/xampp/apache/modules/mod_jk.so"
JkWorkersFile "C:/Apache/apache-tomcat-6.0.29/conf/workers.properties"
JkLogFile "C:/Apache/apache-tomcat-6.0.29/conf/from_apache_mod_jk.log"
JkLogLevel info
JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"

# Send servlet for context /examples to worker named ajp13
JkMount /examples ajp13
# Send JSPs for context /examples/* to worker named ajp13
JkMount /examples/* ajp13

# Send servlet for context /user to worker named ajp13
JkMount /user ajp13
# Send JSPs for context /user/* to worker named ajp13
JkMount /user/* ajp13



For testing the mod_rewrite, I code three files as follows:

test.jsp


<html>
<body>
<form action = "form.jsp" method="get">
Name : <input type="text" name="name"/><br/>
<input type="submit" value="ok"/>
</form>
</body>
</html>


form.jsp


<html>
<body>
<%

String name = request.getParameter("name");
out.println(name);

%>
</body>
</html>

.htaccess file


RewriteEngine On
RewriteRule ^([^/]*)\.html$ /user/form.jsp?name=$1 [L]


I saved the three above mentioned files in C:\Apache\apache-tomcat-6.0.29\webapps\user

when I execute the code in browser as

http://localhost/user/form.jsp?name=yuvi

it outputs the given name, but , when I use
http://localhost/user/yuvi.html

it didn't work (i.e., the .htaccess file is not accessed I think so).

When I tried the above mentioned sample in php by saving the three php files in C:\xampp\htdocs\test, I got the desired output and .htaccess works.

But I don't know why it does not work in jsp!!

Hope that you can understand my problem. Help me please.

Thanks and Regards,

yuvi

Fou-Lu
08-18-2010, 05:58 AM
This rule doesn't look right: ^([^/]*)\.html$
That says starting with any character but / any number of times and ending with .html. You have / in your query.
Try this: ^[^/]+/user/([^/.]+)\.html$ /user/form.jsp?name=$1 [L]
BTW, try to be as specific as possible in your rules. This includes the /user/ directory since you only want to map /user/Fou-Lu/ back to the correct /user/form.jsp?name=Fou-Lu. Leaving it too open will match rules until it cannot proceed past the last, so the original would try to map any simple .html file to the /user/form.jsp file.

yuvi
08-18-2010, 08:30 AM
Thanks for your reply.

But it didn't works. When I try http://localhost/user/yuvi, throws http error as follows:


HTTP Status 404 - /user/yuvi/

type Status report

message /user/yuvi/

description The requested resource (/user/yuvi/) is not available.
Apache Tomcat/6.0.29

Whether I have to save the .htaccess file any where else??

Thanks again,
yuvi

Eldarrion
08-18-2010, 05:20 PM
You could try the following:


RewriteCond %{QUERY_STRING} userid=(\w+?)
RewriteRule ^/myproject/user/publicprofile.jsp /user/$1


This is assuming the userid is letters only. If you need to, change the regexp in the capture group to something that fits your userid.

See how that works for you.

Eldarrion
08-18-2010, 10:41 PM
And the above post will teach me not to post without having my coffee first. :)

Now that my brain is no longer trying to sleep, let's give this another shot:



RewriteRule ^myproject/(\w+?)/$ /myproject/user/publicprofile\.jsp?userid=$1


Tested and should work.

yuvi
08-19-2010, 08:54 AM
thanks but still not working.

where I have to place my .htaccess file??

i placed .htaccess file and other files in myproject/user directory of webapps directory of tomcat.

Is it correct or not??

Eldarrion
08-19-2010, 04:55 PM
Considering the string begins with 'myproject', you'd need to put your .htaccess in the parent directory of myproject.



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