1. Click eclipse in Window-> Preferences-> Server-> Runtime Environments
2. Click on the right side of the Add
3. Select the installation version of tomcat
attention to check the Create
4. Set the Tomcat installation directory:
5. Click the Servers, as shown below, if not, click Window-> Show View-> other-> Enter the Servers
6. The Double-Tomcat v7.0
tick second Use, save it