在Myeclipse中启动Tomcat服务器时报错，错误内容如下，恳请各位大牛指点

[qq_18726495]

七月 18, 2018 7:51:55 下午 org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet [JAX-RS REST Servlet] in web application [/Demo1] threw load() exception
com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
at com.sun.jersey.server.impl.application.WebApplicationImpl.processRootResources(WebApplicationImpl.java:753)
at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:625)
at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:414)
at com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:377)
at com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:242)
at com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:449)
at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:169)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:281)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:442)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1230)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1174)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1066)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5409)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5707)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1017)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:993)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1296)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2039)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

还有一个错误
严重: StandardWrapper.Throwable
com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
at com.sun.jersey.server.impl.application.WebApplicationImpl.processRootResources(WebApplicationImpl.java:753)
at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:625)
at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:414)
at com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:377)
at com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:242)
at com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:449)
at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:169)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:281)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:442)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1230)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1174)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1066)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5409)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5707)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1017)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:993)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1296)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2039)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

但是好像都不影响运行，恳请各位大牛给指点一下，刚入门，各种报错，哎。