I recently installed Tomcat 7 and got it working with Eclipse Helios on Mac OSX Lion.
Install Homebrew:
/usr/bin/ruby -e "$(curl -fsSL https://raw.github.com/gist/323731)"
Install Tomcat:
sudo brew install tomcat
Test the Tomcat install by starting the server:
sudo catalina start
Set it so that you can start it without using sudo:
sudo chgrp -R your_user_name
sudo chmod -R g+rw /usr/local/Cellar/tomcat/
Stop the Tomcat server (if you have not already):
sudo catalina stop
Test the change to the file permissions for Tomcat by starting the server as yourself without sudo:
catalina startca
Stop the Tomcat server (we want Eclipse to do the starting and stopping):
catalina stop
In Eclipse, open the 'Servers' view and add a new Tomcat server. Key point is to make sure to change the name of the server so that it does not contain any spaces! If you don't have a 'Servers' view, you need to go download 'Eclipse IDE for Java EE Developers'.
All done! You should now be able to start and stop Tomcat from Eclipse. :)
首先保证brew命令能够正常使用；
1. 搜索tomcat是否存在：
brew search tomcat
2. 安装tomcat：
brew install tomcat
3. 检查是否安装成功：
catalina -h
4. 运行tomcat：
catalina run
Tomcat的默认端口是8080，如果运行成功可通过http://localhost:8080访问
webapp的根目录(CATALINA_HOME)为:/usr/local/Cellar/tomcat/7.0.33/libexec/webapps/ROOT/
附:
Mac OSX软件包管理工具brew怎么安装?应该有很多朋友有用到这个brew工具，那么这个工具如何安装及下载的呢？
brew 又叫Homebrew，是Mac OSX上的软件包管理工具，能在Mac中方便的安装软件或者卸载软件， 只需要一个命令， 非常方便，brew类似ubuntu系统下的apt-get的功能。
brew安装方法
brew 的官方网站对brew的用法进行了详细的描述安装方法：
在Mac中打开Termal: 输入命令：
ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)"
brew list 列出已安装的软件
brew update 更新brew
brew home 用浏览器打开brew的官方网站
brew info 显示软件信息
brew deps 显示包依赖
brew search /wge*/
/wge*/是个正则表达式， 需要包含在/中
brew install wget
使用brew卸载软件，卸载更方便了
brew uninstall wget
brew install git