Modifying the project directly may cause some inexplicable problems. You need to follow the following four steps:
1. Right-click the project: Refactor->Rename, or select the project and press F2 to modify the name
2. Right-click the project: Properties->Web Project Settings, modify Context Root
3. Go to the .settings folder in the project folder and modify the corresponding place in the org.eclipse.wst.common.component file
4. Modify the corresponding place in the .tomcatplugin file of the project
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