Depressed tomcat still cannot deploy new sites

Depressed tomcat still cannot deploy a new site-general Linux technology-Linux technology and application information. The following is a detailed description. Tomcat 5.5, after installation, you can see the cat using http: // localhost: 8080. Then, I want to put a new web directory under webapps, it is at the same level as the default ROOT, and is compared to the sweet directory. below is the content of a website. If http: // localhost: 8080/sweet is used, it cannot be opened and Error 404 is always prompted.