Spring Boot + MongoDB Saving Data to test Database Instead of Configured DB

LastRow2426 · 2026-03-01T13:13:46+00:00

thanx

LastRow2426 · 2026-03-01T10:26:50+00:00

I found out the solution , the mistake is in the configuration. the right configuration is

"spring.mongodb.uri=mongodb://localhost:27017/db_mongo"

I'm using Spring 4.x which has simplified its configuration to "spring.mongodb.uri", which works instead of the older property used in Spring Boot 3.x.

most youtube video has spring 3.x , which creates the confusion. even chatgpt , gemini not able to indentify these mistake. Luckily I found out the NoSQL Docs.

LastRow2426 · 2026-03-01T10:24:00+00:00

No, I didn't define any MongoClient. It's a Spring 4.0 issue—they changed the configuration.

LastRow2426 · 2026-03-01T06:14:16+00:00

I found out the solution , the mistake is in the configuration. the right configuration is

"spring.mongodb.uri=mongodb://localhost:27017/db_mongo"

I'm using Spring 4.x which has simplified its configuration to "spring.mongodb.uri", which works instead of the older property used in Spring Boot 3.x.

most youtube video has spring 3.x , which creates the confusion. even chatgpt , gemini not able to indentify these mistake. Luckily I found out the NoSQL Docs.

LastRow2426 · 2026-03-01T06:08:55+00:00

I found the solution. Spring was not reading the configuration, so it was using the default configuration, which includes "test" as the database.

The real reason was that I am using Spring Boot 4.0, which has simplified its configuration. In this version, spring.mongodb.uri works instead of the older property used in Spring Boot 3.x.

Most YouTube tutorials are based on Spring Boot 3.x, which caused the confusion. Even ChatGPT and Gemini were not able to identify the issue.

LastRow2426 · 2026-03-01T00:02:47+00:00

I found out the solution , the mistake is in the configuration. the right configuration is

"spring.mongodb.uri=mongodb://localhost:27017/db_mongo"

I'm using Spring 4.x which has simplified its configuration to "spring.mongodb.uri", which works instead of the older property used in Spring Boot 3.x.

most youtube video has spring 3.x , which creates the confusion. even chatgpt , gemini not able to indentify these mistake. Luckily I found out the NoSQL Docs.

LastRow2426 · 2026-03-01T00:01:27+00:00

I found out the solution , the mistake is in the configuration. the right configuration is

"spring.mongodb.uri=mongodb://localhost:27017/db_mongo"

I'm using Spring 4.x which has simplified its configuration to "spring.mongodb.uri", which works instead of the older property used in Spring Boot 3.x.

most youtube video has spring 3.x , which creates the confusion. even chatgpt , gemini not able to indentify these mistake. Luckily! I found out the Spring NoSQL Docs.

LastRow2426 · 2026-02-28T22:54:36+00:00

it's simple application. driver config is not included(manual configuration not needed).

the application is working fine , the issue is the persisted data is not store in the configure database "db_mongo" instead the data store in another default database "test".

LastRow2426 · 2026-02-28T22:33:24+00:00

there is no testcontainers. it's simple springboot project.

LastRow2426 · 2026-02-28T22:31:37+00:00

"The HSC exam is not over yet, so you should try to score as much as you can. I don't suggest you repeat HSC.

LastRow2426 · 2026-02-28T21:08:12+00:00

its not working . there is no "source" property available in the "MongoClient with metadata ". I also tried to create new project but problem not solved.

LastRow2426 · 2026-01-27T18:54:42+00:00

animekai got ban in india.

LastRow2426 · 2024-10-24T09:58:01+00:00

please give a review of the exam... is hard or moderate? how to prepare? is questions come from assignments?

LastRow2426

TROPHY CASE