在eclipse中设置tomcat并尝试运行简单的hello world应用程序时，您会遇到很多此错误.您可以按照以下给定步骤进行操作:

When you are setting up tomcat in eclipse and trying to run simple hello world application, you face a lot this error. You can follow below given steps:

1. 右键单击项目属性，然后转到项目构面，选择Web应用程序模块，然后在下方选择蓝色配置链接，然后选择目录src/main/webapp.

1. Right click on project properties, and go to project facet, select web application module, then select blue colour configuration link at the downside, and select content directory to src/main/webapp.

转到部署程序集，选择java build ..并添加maven依赖项.

Go to deployment assembly, select java build.. and add maven dependencies.