Spring Boot- Profile setting Through YML file is not working - spring

Question

In Spring Boot program, profile setting using application.yml is not working whereas the same program is working using applicaiton.properties. the following actions has been performed but it ended up in vain
In Eclipse ide Project-Clean has been done
Maven project updated
Spaces in YML file removed and corrected
YML file is deleted and recreated.
applicaiton.yml
spring:
profiles:
active: dev
applicaiton-dev.yml
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql:///ntspbms616db
username: root
password: root
dbcp2:
max-total: 100
initial-size: 10
max-conn-lifetime-millis: 10000000
type: org.apache.commons.dbcp2.BasicDataSource
The error i got after running the program is
Enter the Employee Name
Raja
Enter the Employee Designation
Manager
Enter the Basic Salary
9898999
12:28:40.622 [main] ERROR org.springframework.boot.SpringApplication - Application run failed
org.yaml.snakeyaml.scanner.ScannerException: while scanning for the next token
found character '\t(TAB)' that cannot start any token. (Do not use \t(TAB) for indentation)
in 'reader', line 4, column 2:
How to resolve the issue?

Answer 1

This error means literally what is says.
The "tab" is not permitted by the YAML specs:
To maintain portability, tab characters must not be used in
indentation, since different systems treat tabs differently. Note that
most modern editors may be configured so that pressing the tab key
results in the insertion of an appropriate number of spaces.
So, you should double check for the tab characters in your yaml files and if exist, replace them by double space.
Also, just to add, I can see incorrect formatting of dbcp2 section, without any intendation, so, it should look like this:
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql:///ntspbms616db
username: root
password: root
dbcp2:
max-total: 100
initial-size: 10
max-conn-lifetime-millis: 10000000
type: org.apache.commons.dbcp2.BasicDataSource