apache redirect from non www to www

Using the rewrite engine is a pretty heavyweight way to solve this problem. Here is a simpler solution:

<VirtualHost *:80>
    ServerName example.com
    Redirect permanent / http://www.example.com/
</VirtualHost>

<VirtualHost *:80>
    ServerName www.example.com
    # real server configuration
</VirtualHost>

And then you'll have another <VirtualHost> section with ServerName www.example.com for your real server configuration. Apache automatically preserves anything after the / when using the Redirect directive, which is a common misconception about why this method won't work (when in fact it does).

<VirtualHost *:80>
    ServerAlias example.com
    RedirectMatch permanent ^/(.*) http://www.example.com/$1
</VirtualHost>

To remove www from your URL website use this code in your .htaccess file:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1$1 [R=301,L]

To force www in your website URL use this code on .htaccess

RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^YourSite.com$
RewriteRule ^(.*)$ http://www.yourSite.com/$1 [R=301]
RewriteCond %{REQUEST_fileNAME} !-d
RewriteCond %{REQUEST_fileNAME} !-f
RewriteRule ^(([^/]+/)*[^./]+)$ /$1.html [R=301,L]

Where YourSite.com must be replaced with your URL.

RewriteCond %{HTTP_HOST} ^!example.com$ [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [R=301,L]

This starts with the HTTP_HOST variable, which contains just the domain name portion of the incoming URL (example.com). Assuming the domain name does not contain a www. and matches your domain name exactly, then the RewriteRule comes into play. The pattern ^(.*)$ will match everything in the REQUEST_URI, which is the resource requested in the HTTP request (foo/blah/index.html). It stores this in a back reference, which is then used to rewrite the URL with the new domain name (one that starts with www).

[NC] indicates case-insensitive pattern matching, [R=301] indicates an external redirect using code 301 (resource moved permanently), and [L] stops all further rewriting, and redirects immediately.

This is simple!

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

Try this:

RewriteEngine on
RewriteCond %{HTTP_HOST} ^example.com$ [NC]
RewriteRule ^(.*) http://www.example.com$1 [R=301]

To 301 redirect all requests made directly to the domain to www you can use:

RewriteEngine On

RewriteCond %{HTTP_HOST} !^([^.]+\.[^.]+){2,}$ [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

The benefit of this is that this will work if you have any valid subdomains, e.g.

example.com REDIRECTED TO www.example.com

foo.example.com NO REDIRECT

bar.example.com NO REDIRECT

RewriteEngine On RewriteCond %{HTTP_HOST} ^yourdomain.com [NC] RewriteRule ^(.*)$ http://www.yourdomain.com/$1 [L,R=301]

check this perfect work

-If you host multiple domain names (Optional)

-If all those domain names are using https (as they should)

-if you want all those domain names to use www dot domainName

This will avoid doble redirection (http://non www to http://www and then to https://www)

<VirtualHost *:80>
RewriteEngine On
RewriteCond %{HTTP_HOST} ^(?:www\.)?(.+)$ [NC]
RewriteRule ^(.*)$ https://www.%1$1 [R=301,L]
</VirtualHost>

And

<VirtualHost *:443>
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}$1 [R=301,L]
</VirtualHost>

You should change the redirection code 301 to the most convenient one

If you want to load only the https version of www, use the below configurations in apache virtual host file. all these can have in a single file.

redirecting all http to https of www:

<VirtualHost *:80>
    ServerName example.com
    ServerAlias www.example.com
    Redirect permanent / https://www.example.com/
</VirtualHost>

redirecting https non-www to https www:

<VirtualHost *:443>
    ServerName example.com
    Redirect permanent / https://www.example.com/
</VirtualHost>

real server configuration

<VirtualHost *:443>
    ServerAdmin hostmaster@example.com
    DocumentRoot "/path/to/your/sites/.htaccess-file-folder"
    SetEnv APPLICATION_ENV "production"

    <Directory "/path/to/your/sites/.htaccess-file-folder">
            Options Indexes FollowSymLinks
            DirectoryIndex index.php index.html
            AllowOverride All
            Order allow,deny
            Allow from all
    </Directory>
    ServerName www.example.com
    
    SSLEngine ON
    SSLCertificateFile "/path/to/your/example.cert.pem"
    SSLCertificateKeyFile "/path/to/your/example.key.pem"

    ErrorLog /path/to/your/example.com-error.log
    CustomLog /path/to/your/example.com-access.log combined
    #Your other configurations if you have
</VirtualHost>

This is my own site's configuration, and works like a charm.

<IfModule mod_ssl.c>
  <VirtualHost *:443>
    ServerAdmin admin@domain.com

    ServerName www.domain.com
    ServerAlias domain.com

    DocumentRoot /var/www/html/domain

    <Directory /var/www/html/domain/>
      Options FollowSymLinks
      AllowOverride All
      Require all granted
    </Directory>

    # Redirect non-www to www
    RewriteEngine On

    RewriteCond %{HTTP_HOST} !^www\. [NC]
    RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    Include /etc/letsencrypt/options-ssl-apache.conf
    SSLCertificateFile /etc/letsencrypt/live/domain.com/fullchain.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/domain.com/privkey.pem
  </VirtualHost>
</IfModule>