前提在MAC上安装了MAMP
进入/Applications/MAMP/conf/apache/extra/目录
找到httpd-vhosts.conf文件 打开，
<VirtualHost *:80>
DocumentRoot "项目目录"
ServerName localhost
ServerAlias localhost
<Directory "项目目录">
Options Indexes FollowSymLinks
AllowOverride All
Order deny,allow
Allow from all
</Directory>
</VirtualHost>
进入 /private/etc/ 找到hosts文件。copy一份出来 打开，定一个虚拟域名(localhost)和本地ip127.0.0.1对应，覆盖之前文件
这样我们就可以通过localhost来了。
但是在我机子上配置多个虚拟主机的时候遇到个问题，在这个项目目录的子目录里面配置另一个虚拟域名（api.leave.com）和本地ip127.0.0.1对应。运行的时候总是提示404 Not Found ！The requested URL /xxx/xxxxx was not found on this server.
2017-04-14 补写
今天上stackoverflow去找了下出现Not Found大家是怎么说的，然后看到有人说是下面这样写，我就试了下。咦，配置的虚拟域名都可以用了。。但自己还是一脸懵逼，不知道为什么会出现这样的情况....
<Directory "/Users/Victor/Desktop/Works/Project/“>
Options Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
AllowOverride All
Order allow,deny
Allow from all
</Directory>
<VirtualHost *:80>
DocumentRoot "/Users/Victor/Desktop/Works/Project"
ServerName localhost
</VirtualHost>
<VirtualHost *:80>
DocumentRoot "/Users/Victor/Desktop/Works/Project/xxx"
ServerName api.xxx.com
</VirtualHost>
<VirtualHost *:80>
DocumentRoot "/Users/Victor/Desktop/Works/Project/xxx1/public"
ServerName api.xxx1.com
</VirtualHost>

<VirtualHost *:80>
DocumentRoot "/Users/Victor/Desktop/Works/Project/xxx2/public"
ServerName api.xxx2.com
</VirtualHost>