these contents are reshiped from 如何在eclipse中安装.zip插件

1.make sure your .zip file is an valid Eclipse Plugin

Note:

1. that means: your .zip file contains folders features and plugins, like this:
2. 
3. for new version Eclipse Plugin, it may also include another two files content.jar, artifacts.jar, example:

but this is not important for the plugin,

the most important is the folders features and plugins

which contains the necessary xxx.jar,

for example: 

2.for valid Eclipse Plugin .zip file, you have two methods to install it

(1) auto install

Help -> Install New Software -> Add -> Archive

then choose your .zip file

example:

(2) manual install

1. uncompress .zip file -> got folders features and plugins
2. copy them into the root folder of Eclipse, which already contains features and plugins
3. restart Eclipse, then you can see your installed plugin's settings in Window -> Preferences