The requested URL /phpMyAdmin was not found on this server.问题解决方法

在安装phpmyadmin的时候，安装完毕通过浏览器访问（http://localhost/phpmyadmin/）出现错误：
       The requested URL /phpMyAdmin was not found on this server.
该问题的解决方法是：

第一步：

sudo dpkg-reconfigure -plow phpmyadmin

Then select Apache 2 for the webserver you wish to configure.

第二步：

If this does not work, then you can do the following to include the phpMyadmin-shipped Apache configuration into Apache:

sudo ln -s /etc/phpmyadmin/apache.conf /etc/apache2/conf.d/phpmyadmin.conf
sudo /etc/init.d/apache2 reload

一般通过第一步重新选择apache2就能解决，如果不行，执行第二步的方法。