解决ApplicationContext启动失败：@ComponentScan扫描默认包问题

To resolve the issue of ApplicationContext not starting due to a @ComponentScan of the default package, you can follow these steps:\n\n1. Avoid using the default package: It is considered a good practice to avoid using the default package in Java. Instead, create a named package for your application and move all your classes into that package.\n\n2. Create a named package: Create a new package and move all your classes into that package. For example, if your classes are currently in the default package, create a new package like "com.example.myapp" and move all the classes into this package.\n\n3. Update the component scan configuration: Once you have moved your classes into a named package, update the @ComponentScan annotation in your configuration class to scan the newly created package. For example, if your package is "com.example.myapp", the @ComponentScan annotation should be updated to @ComponentScan("com.example.myapp").\n\n4. Update the import statements: Update any import statements in your classes that reference classes from the default package. For example, if you had an import statement like "import MyClass;", update it to "import com.example.myapp.MyClass;".\n\nBy following these steps, you should be able to resolve the issue of ApplicationContext not starting due to a @ComponentScan of the default package.