From d7edc9a7c2812cf5ef7aeac6c0ad452185b29fe0 Mon Sep 17 00:00:00 2001 From: Alejandro Gervasio Date: Thu, 30 Aug 2018 22:31:26 -0300 Subject: [PATCH] BAEL-2102 - Configure a Tomcat Connection Pool in Spring Boot (#5095) * Initial Commit * Initial Commit * Initial Commit * Update CommandLineCrudRunner.java * Update pom.xml * Update Customer.java * Update application.properties * Update pom.xml * Update SpringBootConsoleApplication.java * Update SpringBootConsoleApplication.java * Update SpringBootConsoleApplication.java * Update CommandLineCrudRunner.java * Update pom.xml --- spring-boot-persistence/pom.xml | 128 ++++++++++-------- .../SpringBootConsoleApplication.java | 22 +++ .../application/entities/Customer.java | 53 ++++++++ .../repositories/CustomerRepository.java | 12 ++ .../runners/CommandLineCrudRunner.java | 37 +++++ .../src/main/resources/application.properties | 18 ++- ...otTomcatConnectionPoolIntegrationTest.java | 22 +++ 7 files changed, 235 insertions(+), 57 deletions(-) create mode 100644 spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/SpringBootConsoleApplication.java create mode 100644 spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/entities/Customer.java create mode 100644 spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/repositories/CustomerRepository.java create mode 100644 spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/runners/CommandLineCrudRunner.java create mode 100644 spring-boot-persistence/src/test/java/com/baeldung/tomcatconnectionpool/test/application/SpringBootTomcatConnectionPoolIntegrationTest.java diff --git a/spring-boot-persistence/pom.xml b/spring-boot-persistence/pom.xml index a16d953581..08989edfa9 100644 --- a/spring-boot-persistence/pom.xml +++ b/spring-boot-persistence/pom.xml @@ -1,57 +1,75 @@ - - 4.0.0 + + + 4.0.0 + + com.baeldung + spring-boot-persistence + 0.1.0 + + + parent-boot-2 com.baeldung - spring-boot-persistence 0.0.1-SNAPSHOT - jar - spring-boot-persistence - This is a simple Spring Data Repositories test - - - parent-boot-2 - com.baeldung - 0.0.1-SNAPSHOT - ../parent-boot-2 - - - - - org.springframework.boot - spring-boot-starter-data-jpa - - - com.h2database - h2 - - - org.springframework.boot - spring-boot-starter - - - - - spring-boot-persistence - - - src/main/resources - true - - - - - org.apache.maven.plugins - maven-war-plugin - - - pl.project13.maven - git-commit-id-plugin - ${git-commit-id-plugin.version} - - - - - - 2.2.4 - - \ No newline at end of file + ../parent-boot-2 + + + + + org.springframework.boot + spring-boot-starter-data-jpa + + + com.zaxxer + HikariCP + + + + + org.springframework.boot + spring-boot-starter-test + test + + + org.apache.tomcat + tomcat-jdbc + ${tomcat-jdbc.version} + + + mysql + mysql-connector-java + ${mysql-connector-java.version} + + + com.h2database + h2 + ${h2database.version} + runtime + + + + + UTF-8 + 1.8 + 8.0.12 + 9.0.10 + 1.4.197 + + + + spring-boot-persistence + + + src/main/resources + true + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + diff --git a/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/SpringBootConsoleApplication.java b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/SpringBootConsoleApplication.java new file mode 100644 index 0000000000..ff37442cd4 --- /dev/null +++ b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/SpringBootConsoleApplication.java @@ -0,0 +1,22 @@ +package com.baeldung.tomcatconnectionpool.application; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.EnableAutoConfiguration; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.boot.autoconfigure.domain.EntityScan; +import org.springframework.context.annotation.ComponentScan; +import org.springframework.data.jpa.repository.config.EnableJpaRepositories; +import org.springframework.transaction.annotation.EnableTransactionManagement; + +@SpringBootApplication +@EnableAutoConfiguration +@ComponentScan(basePackages={"com.baeldung.tomcatconnectionpool.application"}) +@EnableJpaRepositories(basePackages="com.baeldung.tomcatconnectionpool.application.repositories") +@EnableTransactionManagement +@EntityScan(basePackages="com.baeldung.tomcatconnectionpool.application.entities") +public class SpringBootConsoleApplication { + + public static void main(String[] args) { + SpringApplication.run(SpringBootConsoleApplication.class); + } +} diff --git a/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/entities/Customer.java b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/entities/Customer.java new file mode 100644 index 0000000000..4003d5aca9 --- /dev/null +++ b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/entities/Customer.java @@ -0,0 +1,53 @@ +package com.baeldung.tomcatconnectionpool.application.entities; + +import javax.persistence.Column; +import javax.persistence.Entity; +import javax.persistence.GeneratedValue; +import javax.persistence.GenerationType; +import javax.persistence.Id; +import javax.persistence.Table; + +@Entity +@Table(name = "customers") +public class Customer { + + @Id + @GeneratedValue(strategy = GenerationType.AUTO) + private long id; + @Column(name = "first_name") + private String firstName; + @Column(name = "last_name") + private String lastName; + + public Customer() {} + + public Customer(String firstName, String lastName) { + this.firstName = firstName; + this.lastName = lastName; + } + + public long getId() { + return id; + } + + public void setLastName(String lastName) { + this.lastName = lastName; + } + + public String getFirstName() { + return firstName; + } + + public void setFirstName(String firstName) { + this.firstName = firstName; + } + + public String getLastName() { + return lastName; + } + + @Override + public String toString() { + return "Customer{" + "id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + '}'; + } +} diff --git a/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/repositories/CustomerRepository.java b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/repositories/CustomerRepository.java new file mode 100644 index 0000000000..770906439c --- /dev/null +++ b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/repositories/CustomerRepository.java @@ -0,0 +1,12 @@ +package com.baeldung.tomcatconnectionpool.application.repositories; + +import com.baeldung.tomcatconnectionpool.application.entities.Customer; +import java.util.List; +import org.springframework.data.repository.CrudRepository; +import org.springframework.stereotype.Repository; + +@Repository +public interface CustomerRepository extends CrudRepository { + + List findByLastName(String lastName); +} diff --git a/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/runners/CommandLineCrudRunner.java b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/runners/CommandLineCrudRunner.java new file mode 100644 index 0000000000..9666bac5a5 --- /dev/null +++ b/spring-boot-persistence/src/main/java/com/baeldung/tomcatconnectionpool/application/runners/CommandLineCrudRunner.java @@ -0,0 +1,37 @@ +package com.baeldung.tomcatconnectionpool.application.runners; + +import com.baeldung.tomcatconnectionpool.application.entities.Customer; +import com.baeldung.tomcatconnectionpool.application.repositories.CustomerRepository; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.CommandLineRunner; +import org.springframework.stereotype.Component; + +@Component +public class CommandLineCrudRunner implements CommandLineRunner { + + private static final Logger logger = LoggerFactory.getLogger(CommandLineCrudRunner.class); + + @Autowired + private CustomerRepository customerRepository; + + @Override + public void run(String... args) throws Exception { + customerRepository.save(new Customer("John", "Doe")); + customerRepository.save(new Customer("Jennifer", "Wilson")); + + logger.info("Customers found with findAll():"); + customerRepository.findAll().forEach(c -> logger.info(c.toString())); + + logger.info("Customer found with findById(1L):"); + Customer customer = customerRepository.findById(1L) + .orElseGet(() -> new Customer("Non-existing customer", "")); + logger.info(customer.toString()); + + logger.info("Customer found with findByLastName('Wilson'):"); + customerRepository.findByLastName("Wilson").forEach(c -> { + logger.info(c.toString()); + }); + } +} diff --git a/spring-boot-persistence/src/main/resources/application.properties b/spring-boot-persistence/src/main/resources/application.properties index d0fb785fe8..303ce33c25 100644 --- a/spring-boot-persistence/src/main/resources/application.properties +++ b/spring-boot-persistence/src/main/resources/application.properties @@ -1,2 +1,16 @@ -spring.jpa.show-sql=true -spring.jpa.hibernate.ddl-auto=none \ No newline at end of file +spring.datasource.tomcat.initial-size=15 +spring.datasource.tomcat.max-wait=20000 +spring.datasource.tomcat.max-active=50 +spring.datasource.tomcat.max-idle=15 +spring.datasource.tomcat.min-idle=8 +spring.datasource.tomcat.default-auto-commit=true +spring.datasource.url=jdbc:h2:mem:test +spring.datasource.username=root +spring.datasource.password= +spring.datasource.driver-class-name=org.h2.Driver + +spring.jpa.show-sql=false +spring.jpa.hibernate.ddl-auto=update +spring.jpa.hibernate.naming-strategy=org.hibernate.cfg.ImprovedNamingStrategy +spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.H2Dialect +spring.jpa.properties.hibernate.id.new_generator_mappings=false diff --git a/spring-boot-persistence/src/test/java/com/baeldung/tomcatconnectionpool/test/application/SpringBootTomcatConnectionPoolIntegrationTest.java b/spring-boot-persistence/src/test/java/com/baeldung/tomcatconnectionpool/test/application/SpringBootTomcatConnectionPoolIntegrationTest.java new file mode 100644 index 0000000000..c68e137fb0 --- /dev/null +++ b/spring-boot-persistence/src/test/java/com/baeldung/tomcatconnectionpool/test/application/SpringBootTomcatConnectionPoolIntegrationTest.java @@ -0,0 +1,22 @@ +package com.baeldung.tomcatconnectionpool.test.application; + +import javax.sql.DataSource; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.test.context.junit4.SpringRunner; +import static org.assertj.core.api.Assertions.*; +import org.springframework.boot.test.context.SpringBootTest; + +@RunWith(SpringRunner.class) +@SpringBootTest +public class SpringBootTomcatConnectionPoolIntegrationTest { + + @Autowired + private DataSource dataSource; + + @Test + public void givenTomcatConnectionPoolInstance_whenCheckedPoolClassName_thenCorrect() { + assertThat(dataSource.getClass().getName()).isEqualTo("org.apache.tomcat.jdbc.pool.DataSource"); + } +}