With the Eclipse development project, once for the dependency project deployment question had the headache, after using the MyEclipse did not study carefully, recently researched, actually found the relatively simple method, previously all uses the ant to hit the jar package, copy to the Web project, or through the link Source, directly to the dependency of the project compiled to the Web project below, but this feeling is not a long-term, because the former each compile to package too much trouble, the latter need to specify the source file dependent project disk address, for team members of the address is not necessarily uniform, so carefully turned over eclipse, Discovered the Java EE Module Dependencies, suddenly, this is not exactly what to look for, choose web engineering depends on the common project, then through the server deployment, common project will be automatically hit jar package to Web-inf\lib below, Note, however, that you need the Java EE plugin, or use the Eclipse JEE version directly.
Below, the bottom is the new version of Eclipse
An easy way to deploy Web-dependent projects in eclipse