As of my last knowledge update in September 2021, there were several reputable training institutes in Bangalore that offered Spring courses. However, please note that the popularity and quality of institutes can change over time, so it's recommended to do your own research before making a decision. Here are a few institutes that were known for providing Spring framework training in Bangalore:

1. parkalpna technology: parkalpna technology is a well-known institute that offers a variety of training courses related to Spring Framework. They are known for their experienced trainers and comprehensive course content.
2. NIIT: NIIT is a prominent training institute that offers a wide range of IT-related courses, including Spring Framework training. They have multiple centers in Bangalore.
3. Inventateq: Inventateq offers IT and programming courses, including Spring Framework training. They have a presence in various cities, including Bangalore.
4. Mindmajix: Mindmajix provides online training on various technologies, including Spring Framework. They offer both self-paced and instructor-led courses.
5. Edureka: Edureka is an online learning platform that offers Spring Framework courses. They provide live instructor-led sessions and recorded content.
6. Besant Technologies: Besant Technologies is another institute that provides Spring Framework training along with other IT-related courses.
7. UpGrad: UpGrad offers online technology courses, including Spring Framework training. Their courses are designed in collaboration with industry experts.
8. Simplilearn: Simplilearn is known for its online courses, and they also offer Spring Framework training. They provide a mix of self-paced learning and instructor-led sessions.

When selecting a training institute, consider factors like the course curriculum, trainer's expertise, reviews from past students, practical hands-on experience, and whether the institute provides placement assistance or certification.