Скачать или смотреть How to Properly Run jQuery and Bootstrap in Spring MVC with Spring Security

In this guide, we'll guide you through the process of integrating jQuery and Bootstrap into your Spring MVC application while addressing common MIME type issues.
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Integrating jQuery and Bootstrap into Your Spring MVC Application

Are you new to Spring Boot MVC app development and trying to incorporate jQuery and Bootstrap into your project? If you've imported these libraries through Maven and face issues like MIME type errors, you're not alone. Implementing front-end libraries in a Spring MVC application while using Spring Security can be tricky due to strict MIME type checking. Don't worry, though! In this post, we'll walk you through the steps to successfully integrate jQuery and Bootstrap into your Spring MVC application.

Understanding the Problem

After setting up your application in Maven and importing jQuery and Bootstrap as jar files, you may encounter errors like:

“Refused to execute script from [website url] because its MIME type ('text/html') is not executable.”

“Refused to apply style from [website url] because its MIME type ('text/html') is not a supported stylesheet MIME type.”

These errors typically occur when the resources (JavaScript, CSS files) are not served correctly. They result from incorrect configurations in your application which cause it to misinterpret the file types.

Step-by-Step Solution

To resolve these issues and ensure that both jQuery and Bootstrap are properly loaded in your application, follow the steps outlined below.

1. Update Servlet Configuration

Make sure your spring servlet configuration is set up to point to your security and view resolver configurations. In your MySpringMvcDispatcherServeletInitializer you have already defined the servlet mapping, which is a great start.

2. Modify DemoAppConfig Class

The key step to resolving our MIME type issues lies in correctly adding resource handlers in your DemoAppConfig class. This class will implement WebMvcConfigurer.

Code Implementation

Your DemoAppConfig should look something like this:

[[See Video to Reveal this Text or Code Snippet]]

3. Link jQuery and Bootstrap in JSP

With your resource handlers correctly set up, you can link jQuery and Bootstrap in your JSP pages without running into MIME type issues.

Example JSP Links

Here is how you can include these libraries in your JSP files:

[[See Video to Reveal this Text or Code Snippet]]

4. Test your Application

Once changes are made, restart your application and check the Network tab in your browser’s developer tools. The jQuery and Bootstrap files should now be served correctly without any MIME type errors.

Conclusion

Integrating jQuery and Bootstrap into a Spring MVC application can lead to some initial challenges, especially when handling MIME types. However, by correctly setting up your resource handlers and including the necessary libraries in your JSP pages, you can create a functional and visually appealing web application.

If you have any other questions or need further help, feel free to leave a comment below! Happy coding!