Spring PetClinic Sample Application

Approved by the Spring team, this repo is a fork of the spring-projects/spring-petclinic. It allows the Spring community to maintain a Petclinic version with a plain old Spring Framework configuration and with a 3-layer architecture (i.e. presentation --> service --> repository). The "canonical" implementation is now based on Spring Boot, Thymeleaf and aggregate-oriented domain.

Understanding the Spring Petclinic application with a few diagrams

See the presentation here (2017 update)

Running petclinic locally

	git clone https://github.com/spring-petclinic/spring-framework-petclinic.git
	cd spring-framework-petclinic
	./mvnw tomcat7:run-war

You can then access petclinic here: http://localhost:9966/petclinic/

In case you find a bug/suggested improvement for Spring Petclinic

Our issue tracker is available here: https://github.com/spring-petclinic/spring-framework-petclinic/issues

Database configuration

In its default configuration, Petclinic uses an in-memory database (HSQLDB) which gets populated at startup with data. A similar setups is provided for MySql and PostgreSQL in case a persistent database configuration is needed. To run petclinic locally using persistent database, it is needed to run with profile defined in main pom.xml file.

For MySQL database, it is needed to run with 'MySQL' profile defined in main pom.xml file.

./mvnw tomcat7:run-war -P MySQL

Before do this, would be good to check properties defined in MySQL profile inside pom.xml file.

<properties>
    <jpa.database>MYSQL</jpa.database>
    <jdbc.driverClassName>com.mysql.jdbc.Driver</jdbc.driverClassName>
    <jdbc.url>jdbc:mysql://localhost:3306/petclinic?useUnicode=true</jdbc.url>
    <jdbc.username>root</jdbc.username>
    <jdbc.password>petclinic</jdbc.password>
</properties>

You may also start a MySql database with docker:

docker run --name mysql-petclinic -e MYSQL_ROOT_PASSWORD=petclinic -e MYSQL_DATABASE=petclinic -p 3306:3306 mysql:5.7.8

For PostgreSQL database, it is needed to run with 'PostgreSQL' profile defined in main pom.xml file.

./mvnw tomcat7:run-war -P PostgreSQL

Before do this, would be good to check properties defined in PostgreSQL profile inside pom.xml file.

<properties>
    <jpa.database>POSTGRESQL</jpa.database>
    <jdbc.driverClassName>org.postgresql.Driver</jdbc.driverClassName>
    <jdbc.url>jdbc:postgresql://localhost:5432/petclinic</jdbc.url>
    <jdbc.username>postgres</jdbc.username>
    <jdbc.password>petclinic</jdbc.password>
</properties>

You may also start a Postgres database with docker:

docker run --name postgres-petclinic -e POSTGRES_PASSWORD=petclinic -e POSTGRES_DB=petclinic -p 5432:5432 -d postgres:9.6.0

Working with Petclinic in Eclipse/STS

prerequisites

The following items should be installed in your system:

• Maven 3 (http://www.sonatype.com/books/mvnref-book/reference/installation.html)
• git command line tool (https://help.github.com/articles/set-up-git)
• Eclipse with the m2e plugin (m2e is installed by default when using the STS (http://www.springsource.org/sts) distribution of Eclipse)

Note: when m2e is available, there is an m2 icon in Help -> About dialog. If m2e is not there, just follow the install process here: http://eclipse.org/m2e/download/

Steps:

1. In the command line

git clone https://github.com/spring-petclinic/spring-framework-petclinic.git

2. Inside Eclipse

File -> Import -> Maven -> Existing Maven project

Looking for something in particular?

Java Config
Java config branch	Petclinic uses XML configuration by default. In case you'd like to use Java Config instead, there is a Java Config branch available here

Inside the 'Web' layer	Files
Spring MVC - XML integration	mvc-view-config.xml
Spring MVC - ContentNegotiatingViewResolver	mvc-view-config.xml
JSP custom tags	WEB-INF/tags, createOrUpdateOwnerForm.jsp
JavaScript dependencies	JavaScript libraries are declared as webjars in the pom.xml
Static resources config	Resource mapping in Spring configuration
Static resources usage	staticFiles.jsp
Thymeleaf	In the late 2016, the original Spring Petclinic has moved from JSP to Thymeleaf.

'Service' and 'Repository' layers	Files
Transactions	business-config.xml, ClinicServiceImpl.java
Cache	tools-config.xml, ClinicServiceImpl.java
Bean Profiles	business-config.xml, ClinicServiceJdbcTests.java, PetclinicInitializer.java
JDBC	business-config.xml, jdbc folder
JPA	business-config.xml, jpa folder
Spring Data JPA	business-config.xml, springdatajpa folder

Interaction with other open source projects

One of the best parts about working on the Spring Petclinic application is that we have the opportunity to work in direct contact with many Open Source projects. We found some bugs/suggested improvements on various topics such as Spring, Spring Data, Bean Validation and even Eclipse! In many cases, they've been fixed/implemented in just a few days. Here is a list of them:

Name	Issue
Spring JDBC: simplify usage of NamedParameterJdbcTemplate	SPR-10256 and SPR-10257
Bean Validation / Hibernate Validator: simplify Maven dependencies and backward compatibility	HV-790 and HV-792
Spring Data: provide more flexibility when working with JPQL queries	DATAJPA-292
Dandelion: improves the DandelionFilter for Jetty support	113

Contributing

The issue tracker is the preferred channel for bug reports, features requests and submitting pull requests.

For pull requests, editor preferences are available in the editor config for easy use in common text editors. Read more and download plugins at http://editorconfig.org.