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Using JdbcTemplate

Module 5. Spring
Level 17 , Lesson 1
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The JdbcTemplate and NamedParameterJdbcTemplate classes from Spring are auto-configurable, and you can bind them via the @Autowire annotation directly to their own beans, as shown in the following example:

Java 
import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.stereotype.Component; @Component public class MyBean { private final JdbcTemplate jdbcTemplate; public MyBean(JdbcTemplate jdbcTemplate) { this.jdbcTemplate = jdbcTemplate; } public void doSomething() { this.jdbcTemplate ... } }
Java university
Kotlin 
import org.springframework.jdbc.core.JdbcTemplate import org.springframework.stereotype.Component @Component class MyBean(private val jdbcTemplate: JdbcTemplate) { fun doSomething() { jdbcTemplate.execute("delete from customer") } }

You can configure some template properties using the spring.jdbc.template.* properties, as shown in the following example:

Properties 
spring.jdbc.template.max-rows=500
Yaml 
spring:
  jdbc:
    template:
      max-rows: 500
NamedParameterJdbcTemplate reuses the same JdbcTemplate instance behind the scenes. If more than one JdbcTemplate is defined and there is no primary candidate, the NamedParameterJdbcTemplate will not be automatically configured.
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