Spring Boot with MySQL — Spring Technical Interview Questions & Answers

Configuring a MySQL datasource in application.properties.

Spring Boot with MySQL

  • Connect MySQL by setting datasource properties and adding the MySQL driver.
  • Set spring.datasource.url, username, and password.
  • Add MySQL connector dependency.
  • Use JPA repositories or JdbcTemplate as your access style.
  • Wrong JDBC URL format or DB not created yet.
  • Properties + driver + repository layer.

Technical Interview Tip: List the three datasource properties you must set.

Code Examples for Spring Boot with MySQL

Spring Boot with MySQL — working example

// application.properties
spring.datasource.url=jdbc:h2:mem:prep
spring.datasource.username=sa
spring.datasource.password=
spring.flyway.enabled=true

// JDBC sketch
// jdbcTemplate.query("SELECT id, email FROM users", mapper);

// Thymeleaf view name "home" -> templates/home.html
// <p th:text="${message}">msg</p>

Spring Boot with MySQL — boot wires DataSource/JDBC/Flyway from properties; Thymeleaf renders server-side HTML templates.

How to Explain Spring Boot with MySQL to an Interviewer

What is Boot with MySQL (sb db)?

Used for a short Boot with MySQL sb db example a small REST app Not just the heading

Give one small example of Boot with MySQL (sb db).

the smallest Boot with MySQL sb db example you can type Configuring a MySQL datasource in application

What mistake do beginners make with Boot with MySQL (sb db)?

only saying “Boot with MySQL sb db” with no example Show the fix

Where do you use Boot with MySQL (sb db)?

a small REST app a short Boot with MySQL sb db example