1、配置.htaccess

<IfModule mod_rewrite.c>
Options +FollowSymlinks -Multiviews
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php?/$1 [QSA,PT,L]
</IfModule>

2、将.htaccess文件上传到项目根目录

3、修改application/config.php中的如下参数

$config['index_page'] = ""//设置为空