Tomcat cannot run or co-exist multiple projects

I deployed two projects under Tomcat, but one can run, the other can't, the first feeling is memory problems, and it allocates more memory to Tomcat. But it doesn't work.

The reason is that this parameter is less webapprootkey and needs to be added under the respective web. XML <context-param> <param-name>webAppRootKey</param-name> <param-value>socialmedia</param-value> </context-param> But I can only run one after I add it, and the other two can't run. The reason is that the value of this webapprootkey cannot be the same, there will be conflicts. Set it to a different, solution.

Tomcat cannot run or co-exist multiple projects