I am trying to create a small H2 in-memory database while using hibernate. But the table is not dispplayed in the H2 UI. I'm not sure if I need to include anything else in the configuration.
Here is the code:
Below are dependencies added for hibernate and h2 DB.
pom.xml
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.3.1.Final</version>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
<version>1.4.200</version>
</dependency>
This is the configuration XML which has all the H2 DB details.
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 5.3//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-5.3.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">org.h2.Driver</property>
<property name="connection.url">jdbc:h2:mem:test;DB_CLOSE_DELAY=-1</property>
<property name="dialect">org.hibernate.dialect.H2Dialect</property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">create</property>
<mapping class="HiberDemo.Employee"/>
</session-factory>
</hibernate-configuration>
This creates the table along with the other columns.
Employee.java
package HiberDemo;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name= "emp500")
public class Employee {
#Id
private int id;
private String firstName,lastName;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
}
This is to store some data into the table.
StoreData.java
package HiberDemo;
import java.sql.DriverManager;
import java.sql.SQLException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import com.sun.corba.se.pept.transport.Connection;
public class StoreData {
public static void main(String[] args) throws SQLException {
StandardServiceRegistry ssr = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();
SessionFactory factory = meta.getSessionFactoryBuilder().build();
Session session = factory.openSession();
Transaction t = session.beginTransaction();
Employee e1=new Employee();
e1.setId(101);
e1.setFirstName("abc");
e1.setLastName("xyz");
session.save(e1);
t.commit();
System.out.println("successfully saved");
factory.close();
session.close();
// conn.close();
}
}
This is the H2 DB UI where the table I have created is not displayed.
Check logs if temporary database is created. If so url is consoled in logs:
2020-05-28 12:20:01.280 INFO 26579 --- [ restartedMain]
o.s.b.a.h2.H2ConsoleAutoConfiguration : H2 console available at
'/h2-console'. Database available at
'jdbc:h2:mem:b9994036-2f8e-4d00-8d7d-012a270661fa'
If you try connecting using jdbc:h2:mem:b9994036-2f8e-4d00-8d7d-012a270661fa, test connection works and tables are also shown:
You might need to downgrade your version and use the below
<dependency>
<groupId> com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.193</version>
</dependency>
You must add the following two dependencies in your pom.xml
`
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
`
Then enable H2 console by adding the following line in application.properties file
spring.h2.console.enabled=true
After that run your application and open Rest endpoint "/h2-console"
Like: http://localhost:9090/h2-console/
Now copy your JDBC URL from the console
Like: Database available at 'jdbc:h2:mem:b61c56f6-93f3-4324-8b4a-4ead06f669d1'
Copy and paste in you H2 console, then click on 'Connect'
You can also configure manually everything by adding the following configuration in your application.properties file:
#---------------------------------DATABASE CONFIG-----------------------
spring.h2.console.enabled=true
spring.datasource.url=jdbc:h2:mem:person_db
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=root
spring.datasource.password=root
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
#---------------------------------------------------------------
JPA dependency is missing. So, add below dependency.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
This is the default login to the H2 database. Confirm if your details match
Change testdb to test in the screenshot above
you may need to add the following lines to the application.properties file.
spring.datasource.url= jdbc:h2:mem:test
I had the same problem. solved after couple of days :)
these 3 ways work same as each other.
downgrade your H2 dependency. if there isn't any version mentioned maven gets the latest so you might want to explicitly mention any version below 1.4.195
as below:
<dependency>
<groupId> com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.193</version>
</dependency>
in your application properties write the full name of the database you want to connect to.
spring.datasource.url=jdbc:h2:mem:desiredName and in console use: jdbc:h2:mem:desiredName as name
by reading logs use the generated name. it differs time to time. H2 console available at '/h2'. Database available at 'jdbc:h2:mem:desiredName' this may have 16 letters after if no name is specified in application properties.
have fun.
Related
I have been checking all of my code for hours now and i just can't seem to find tthe error in here
it keeps throwing org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'imageRepository': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Not a managed type: class entitiys.Image
my controller looks like this:
package imageSearcher;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class AppController {
public static void main(String[] args) {
SpringApplication.run(AppController.class, args);
}
}
this is what the Image entity looks like:
package entitiys;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
#Entity(name = "image")
public class Image {
#Id
#Column(name = "id")
public Integer id;
#Column(name= "imageURL")
public String imageURL;
}
The image mapping looks as following
package imageSearcher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import entitiys.Image;
#CrossOrigin(origins = "*", allowedHeaders = "*")
#RestController
public class ImageController {
#Autowired
private ImageRepository imageRep;
#GetMapping(path="/all")
public Iterable<Image> index() {
return imageRep.findAll();
}
#GetMapping(path = "/all/URL")
public Iterable<String> AllURL() {
return imageRep.findAllURL();
}
}
the imahe CrudRepository looks like this:
package imageSearcher;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import entitiys.Image;
#Repository
public interface ImageRepository extends CrudRepository<Image, Integer>{
#Query(value = "select * from Image", nativeQuery = true)
Iterable<Image> findAll();
#Query(value = "select Image.imageURL from Image", nativeQuery = true)
Iterable<String> findAllURL();
}
this is the pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-boot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- Use MySQL Connector-J -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
and this is the application.properties:
server.port=91
spring.datasource.url=jdbc:mysql://localhost:3306/gip2021
spring.datasource.username=root
spring.datasource.password=
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.naming_startegy=org.hibernate.cfg.EJB3NamingStrategy
spring.jpa.hibernate.ddl-auto=none
I have no clue of what is wrong here i hope someone can help me because this is for my final project and even my Teacher can't see the issue
also here is the database script for if you need it:
create table Image(
id integer unsigned auto_increment primary key,
imageURL varchar(255)
);
insert into image (imageURL) values
("test"),
("test2");
for anyone wanting the git repo:
https://github.com/michiel2003/GIP2021.git
Just moved everything to the same package and it worked my teacher told me to put the entitiys in a different package and that's not what you are supposed to do
The from spring boot documentation for #SpringBootApplication :
Many Spring Boot developers always have their main class annotated
with #Configuration, #EnableAutoConfiguration and #ComponentScan.
Since these annotations are so frequently used together (especially if
you follow the best practices above), Spring Boot provides a
convenient #SpringBootApplication alternative.
The #SpringBootApplication annotation is equivalent to using
#Configuration, #EnableAutoConfiguration and #ComponentScan with their
default attributes: [...]
and #ComponentScan:
If specific packages are not defined, scanning will occur from the
package of the class that declares this annotation.
So only imageSearcher package is being scanned. You need to rearrange you packages or change #SpringBootApplication annotation to
#SpringBootApplication(scanBasePackages = {"imageSearcher","entitiys"})
EDIT:
If your teacher told you to move it to different package maybe he wanted you to make workaround for just like I proposed
created the pull request: https://github.com/michiel2003/GIP2021/pull/1 that will fix the bug, you can simply merge it :)
agreeing with every points that have already been mentioned above regarding #ComponentScan and adding additional things that caught my eyes:
this bug can be easily reproduced by adding a dummy loadContext test, this test will be generated when you start bootstrapping a spring boot application by using spring initializr, which is always the best way to start spring booting
I know test experience has always been treated as an overhead for junior developers, but it is worth it if you want to go down the road to a senior :)
when looking into your git histories: please do not simply delete getter and setters just because they look like template code, if you feel comfortable you can try adding lombok
I have created a SpringBoot multi module project.
You can find the basic projectstructure here.
Now I'm trying to generate tables using Hibernate in the model-module.
Prerequisites:
database in docker environment:
docker run --name postgres -e POSTGRES_PASSWORD=user -e POSTGRES_USER=user -e POSTGRES_DB=postgres -p 5432:5432 -d postgres
model/pom.xml:
<project ...>
...
<dependencies>
<!--general-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<!--persistence-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
</dependency>
</dependencies>
</project>
model/src/main/resources/application-model.properties:
# spring datasource
spring.database.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://localhost:5432/postgres
spring.datasource.username=user
spring.datasource.password=user
# hibernate
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
spring.jpa.hibernate.ddl-auto = update
model/src/main/java/model/ModelConfig.java:
...
#SpringBootApplication
#EntityScan("com.test.model.*")
#PropertySource("classpath:application-model.properties")
public class ModelConfig {
}
model/src/main/java/model/MyEntity.java:
...
#Entity
#Data
public class MyEntity {
#Id
#GeneratedValue
private long id;
#Column
private String text;
}
web/src/main/java/web/WebConfig.java:
...
#Configuration
#ComponentScan("com.test.*")
public class WebConfig {
}
WebConfig is a configurationclass which right next to the WebApplication.java which has the main-function of the application.
So the #ComponentScan("com.test.*") in WebConfig should scan in com.test.model as well and find the ModelConfig bean, which in fact is the case:
taken from Intellij
In ModelConfig the annotation #EntityScan("com.test.model.*") should search for entities in com.test.model.*, which is the case for MyEntity.java.
Error:
Actually there is no error, #mvn clean install runs and builds everything and I can run the application without getting any error messages as you can see in the output.
But there is no table generated.
Expectations:
I expect this setup to generate a table called <my_entity>, with a id-field with autogeneration and a field called text with varchar(255), which are the defaults of #GeneratedValue and #Column in MyEntity.java.
Thanks in advance.
I am using the hibernate with spring boot and table created in given database but not in another database like 10.10.1.350 is management node and 10.10.1.348 and 10.10.1.349 are child db. when we create table using query directly in 348 then table auto created in 349. But we are using the hibernate then table created in 348 but not auto create in 349.
Properties like:-
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://10.10.1.348:3306/test
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=abc#1234
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
Pojo Class-
#Entity
#Table(name = "test")
#Getter
#Setter
public class Test {
#Id
#Column(name = "tst_id")
private Long tstId;
#Column(name = "tst_nm")
private String tstNm;
}
pom.xml for mysql dependency-
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
Hibernate docs says:
Although Hibernate provides the update option for the hibernate.hbm2ddl.auto configuration property, this feature is not suitable for a production environment.
Just use Flyway or Liquibase for DB migrations. Spring boot integrates with both of them.
Anybody know why it doesn't work?
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
06/04/2017 14:11:24.732 ERROR [main] - org.springframework.boot.SpringApplication: Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:742)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151)
at com.cadit.web.WebApplicationAware.main(WebApplicationAware.java:19)
Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present!
at org.springframework.util.Assert.notEmpty(Assert.java:277)
at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.<init>(JpaMetamodelMappingContext.java:52)
at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:71)
at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:26)
at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:134)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
... 16 common frames omitted
I defined entities in com.cadit.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="TEST")
public class GenericBeans implements BeanType, IEntity<Long> {
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name = "TEST_PAID")
protected Long id;
#Column(name = "SOCIETA")
private String SocietaCod;
#Column(name = "CONTO_INTERMEDIARIO")
private String contoInt;
#Column(name = "TIPO_OPERAZIONE")
private String tipoOpe;
public GenericBeans(String societaCod, String contoInt, String tipoOpe) {
SocietaCod = societaCod;
this.contoInt = contoInt;
this.tipoOpe = tipoOpe;
}
public GenericBeans() {
}
public String getSocietaCod() {
return SocietaCod;
}
public void setSocietaCod(String societaCod) {
SocietaCod = societaCod;
}
public String getContoInt() {
return contoInt;
}
public void setContoInt(String contoInt) {
this.contoInt = contoInt;
}
public String getTipoOpe() {
return tipoOpe;
}
public void setTipoOpe(String tipoOpe) {
this.tipoOpe = tipoOpe;
}
#Override
public String toString() {
return "CSV [SocietaCod=" + SocietaCod + ", contoInt=" + contoInt + ", tipoOpe=" + tipoOpe + "]";
}
#Override
public Long getId() {
return this.id;
}
#Override
public void setId(Long id) {
this.id=id;
}
}
I definied my datasource entry definition for spring:
import org.apache.log4j.Logger;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.transaction.annotation.EnableTransactionManagement;
#Configuration
#ComponentScan
#EntityScan("com.cadit.entities")
//#EnableJpaRepositories("com.cadit.entities")
#EnableTransactionManagement
#PropertySource("classpath:db-config.properties")
public class DbAutoConfiguration {
static final Logger logger = Logger.getLogger(DbAutoConfiguration.class);
public DbAutoConfiguration() {
}
#Bean
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource dataSource(){
//DataSource ds =new EmbeddedDatabaseBuilder().addScript("classpath:sql/schema.sql").addScript("classpath:testdb/data.sql").build();
DataSourceBuilder ds = DataSourceBuilder.create();
logger.info("dataSource = " + ds);
return ds.build();
}
}
My db-config.properties is:
spring.jpa.hibernate.ddl-auto: validate
spring.jpa.hibernate.naming_strategy: org.hibernate.cfg.ImprovedNamingStrategy
#spring.jpa.database: SQL
spring.jpa.show-sql: true
spring.datasource.driverClassName=net.sourceforge.jtds.jdbc.Driver
spring.datasource.url=jdbc:jtds:sqlserver://localhost:1433;databaseName=example
spring.datasource.username=xxx
spring.datasource.password=xxx
IEntity is:
public interface IEntity <I extends Serializable> extends Serializable{
/**
* Property rappresenta la primary key.
*/
String P_ID = "id";
/**
* restituisce la primary key
* #return
*/
I getId();
/**
* imposta la primary key
* #param id
*/
void setId(I id);
}
I try to write CSV file to database using CrudRepository interface of spring:
import java.io.File;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.ClassPathResource;
import org.springframework.data.repository.CrudRepository;
import com.cadit.entities.GenericBeans;
import com.csvreader.CsvReader;
public class CsvReaders {
static final Logger logger = Logger.getLogger(CsvReader.class);
#Autowired
public CrudRepository<GenericBeans,Long> _entitymanager;
public List loadDataFromCsv(String fileName) {
try {
File file = new ClassPathResource(fileName).getFile();
CsvReader csv = new CsvReader(file.getAbsoluteFile().getPath(),';');
csv.readHeaders();
List l = new LinkedList();
GenericBeans b = new GenericBeans ();
while (csv.readRecord())
{
b.setSocietaCod(csv.get(0));
b.setContoInt(csv.get(1));
b.setTipoOpe(csv.get(2));
_entitymanager.save(b); //persist on db
l.add(b);
b = new GenericBeans();
}
b=null;
return l;
} catch (Exception e) {
logger.error("Error occurred while loading object list from file " + fileName, e);
return Collections.emptyList();
}
}
}
I DO NOT use main class but a class which extend SpringBootServletInitializer because i want to run it on both standalone tomcat and Tomcat installation as WAR application
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
#Configuration
#ComponentScan(basePackages={"com.cadit.entities","com.cadit.beans"})
#EnableAutoConfiguration
public class WebApplicationAware extends SpringBootServletInitializer {
private static Class<WebApplicationAware> applicationClass = WebApplicationAware.class;
public static void main(String[] args) {
SpringApplication.run(applicationClass, args);
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(applicationClass);
}
}
All properties file are in classpath resources because it's a maven project.
pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework</groupId>
<artifactId>xxxx</artifactId>
<version>0.1.0</version>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.11.1.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0.2</version>
</dependency>
<!-- altre dipendenze non spring -->
<!-- https://mvnrepository.com/artifact/net.sourceforge.javacsv/javacsv -->
<dependency>
<groupId>net.sourceforge.javacsv</groupId>
<artifactId>javacsv</artifactId>
<version>2.0</version>
</dependency>
<!-- per jpa solo se si usa il Tomcat embedded -->
<dependency>
<groupId>net.sourceforge.jtds</groupId>
<artifactId>jtds</artifactId>
<version>1.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<!-- end -->
<!-- dipendenze logback -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.5</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.7.5</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.7</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.7</version>
</dependency>
<!-- fine dip logback -->
</dependencies>
<properties>
<start-class>hello.WebApplicationAware</start-class>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
</project>
What's the problem, why doesn't it find JPA entities when I run WebApplicationAware class?
Spring does not find any JPA Entities, so no JPA Meta Model is created, that is why you face the exception.
The cause of this problem may be a wrong persistence-api version on your class path.
You are using
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0.2</version>
</dependency>
but I am pretty shure your spring version uses persistence-api version 2.
Could it be, you are using #Entity annotation from version 1 ?
At runtime spring uses version 2, and this is searching for Entites using #Entity from version 2 only !
Remove the dependencies
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.11.1.RELEASE</version>
</dependency>
Instead add
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
This will give you all JPA dependencies in the right version.
I solved it by adding 2 annotations
#EnableAutoConfiguration
#EntityScan(basePackages = { "com.wt.rds" })
and my dependency was in gradle
compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version: '2.0.4.RELEASE'
Unfortunately, most of the springboot guides on JPA integration test often lack a piece of configuration here and there.
So here is an example that hopefully should just work for you.
Point 1.
My local environment is currently setup to use springboot version:
<version.spring.boot>1.5.9.RELEASE</version.spring.boot>
That being said, I am currently setting up my local environment to be able to run integration tests against multiple databases (e.g. postgres, hsql, h2).
Therefore, I start by googling any random toturial that approaches this problem.
The next link is one such example:
https://www.baeldung.com/spring-testing-separate-data-source
The above example is a good starting point. It allows you to scoop up a valid Entity and a Valid repository. The springboot test class itself, on the other hand, leaves a lot ot be desired.
With the above example, you will immediately struggle with the integration test. You will get the usuable problems about the example not giving you the application.class to configure the integration test, and you are left hanging clueless as to what springboot annotations you need to put "where" to make the test to finally run without explosions.
So now I give you a MINIMAL set of 3 classes (Entity + Repository + SpringbootTest) that should hopefully have 100 percent of the configuration you need. This will serve as a basis of any JPA based integration test you will need to do in the future, then you can swap your entities and repositories, and continue testing with the same type of srpingboot configuration.
I start by giving you the IRRELEVANT classes. The stuff that is always the same, the stuff that you want to test, and that has nothing to do with configuration.
I am referring to REPOSITORY + ENTITY.
In eclipse create your java package:
tutorial.www.baeldung.com.tutorial001jpa.separateDS
Dump into this package the following trivial entity and repository classes, that are based on the tutorial reference I gave above.
Tutorial001GenericEntity
package tutorial.www.baeldung.com.tutorial001jpa.separateDS;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name = "TUTORIAL_001_GENERIC_ENTITY")
public class Tutorial001GenericEntity {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String value;
public Tutorial001GenericEntity() {
super();
}
public Tutorial001GenericEntity(String value) {
super();
this.value = value;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
// standard constructors, getters, setters
}
Then we go for the second trivial code snippet.
The spring repository boiler plate code.
Tutorial001GenericEntityRepository
package tutorial.www.baeldung.com.tutorial001jpa.separateDS;
import org.springframework.data.jpa.repository.JpaRepository;
public interface Tutorial001GenericEntityRepository extends JpaRepository<Tutorial001GenericEntity, Long> {
}
At this point your maven project, src/test/java has a total of two classes. The basic stuff.
An entity and a repository, that serve as an example of any integration test you will ever need to do.
So now you go to the only important class in the example, the stuff that always gives a lot of problems, and that is the springboot test class which more then being responsible to test your business logic also has the complex task of CONFIGURING your test.
In this case, this test class has ALL IN ONE the annotations that allow springboot to disocver your entities, repositories, etc...
package tutorial.www.baeldung.com.tutorial001jpa.separateDS;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
#RunWith(SpringRunner.class)
#ContextConfiguration(classes = {
tutorial.www.baeldung.com.tutorial001jpa.separateDS.Tutorial001GenericEntityIntegrationTest.ConfigureJpa.class })
#SpringBootTest()
public class Tutorial001GenericEntityIntegrationTest {
#EntityScan(basePackageClasses = { Tutorial001GenericEntity.class })
#EnableJpaRepositories(basePackageClasses = Tutorial001GenericEntity.class)
#EnableAutoConfiguration()
public static class ConfigureJpa {
}
#Autowired
private Tutorial001GenericEntityRepository genericEntityRepository;
#Test
public void givenTutorial001GenericEntityRepository_whenSaveAndRetreiveEntity_thenOK() {
Tutorial001GenericEntity genericEntity = genericEntityRepository.save(new Tutorial001GenericEntity("test"));
Tutorial001GenericEntity foundEntity = genericEntityRepository.findOne(genericEntity.getId());
assertNotNull(foundEntity);
assertEquals(genericEntity.getValue(), foundEntity.getValue());
}
}
The important thing, you see, is that this spring boot test has a class level annotation to provide to the springboot test the configuration context.
What we are doing is dumping one and only one class reference that represents our test configuration.
tutorial.www.baeldung.com.tutorial001jpa.separateDS.Tutorial001GenericEntityIntegrationTest.ConfigureJpa.class
And then on this little guy, you put all of the additional annotations in the world you need that springboot offers to configure applications.
In this case we have a dedicated annotation to mention entities.
Another to mention repositories.
And another to tell springboot to activate its auto configuration.
This springboot auto configuration annotation then does additional vodoo, like looking at your classpath and seeing that you have in the classpath say:
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>test</scope>
<version>2.3.4</version>
</dependency>
And it will immediately know how to configure an in memory data source for this database.
Behind the scenes, there might be additional configuration that is getting used.
For example, if you create an application.properties file in your src/test/resources that file will be considered.
It is very to see that the appliction.properties is considered by your running test.
If you want to verify this, make sure that in your test setup you do not have, for example, any dependency on the JDBC driver for postgres.
And then put into your application.properties something liek this:
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
This dialect is not compatible with HSQL or H2, so it will immediately make your green passing integration test blow up.
To be honest, I do not know if there is a simpler combo of annotations to properly configure the springboot scanning for an integration test.
As a rule, I would recommend that you try avoiding having hundreds of thousands of configuration classes in your src/test/resources.
Because if at some point you want to toggle all of your integration tests from using applicat-postgres.proeprties to application-hsql.properties, you might find yourself needing to tweak multiple configuration classes instead of just one.
So as rule, per maven component you write, I would try to have the tests that check repositories extend some sort of MyBaseINtegrationTestClass, and in there put this
#ContextConfiguration(classes = {
tutorial.www.baeldung.com.tutorial001jpa.separateDS.Tutorial001GenericEntityIntegrationTest.ConfigureJpa.class })
So that you only need to play with one configuration for testing for the hole project.
IN any case, hopefully the triplet of classes given here helps you.
One finel thing, for maven dependencies for integration testing, here is what I am using:
<!-- Test Dependencies JPA REPOSITORY TESTS -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>
The reason why i am using hsql and h2 is beacuse I want my integration tests to be able to be tunned to either use application-hsql or application-h2.properties.
I am trying to initialize my database with a view and a rule following 75.3 Initialize a database using Spring JDBC.
75.3 Initialize a database using Spring JDBC
Spring JDBC has a DataSource initializer feature. Spring Boot enables it by default and loads SQL from the standard locations schema.sql and data.sql (in the root of the classpath). In addition Spring Boot will load the schema-${platform}.sql and data-${platform}.sql files (if present), where platform is the value of spring.datasource.platform, e.g. you might choose to set it to the vendor name of the database (hsqldb, h2, oracle, mysql, postgresql etc.). Spring Boot enables the fail-fast feature of the Spring JDBC initializer by default, so if the scripts cause exceptions the application will fail to start. The script locations can be changed by setting spring.datasource.schema and spring.datasource.data, and neither location will be processed if spring.datasource.initialize=false.
This section says that if I put a schema-postgresql.sql it should initialize my database with the script that the file contains.
Unfortunately the script ends with the following error
Caused by: org.postgresql.util.PSQLException: syntax error at end of input SQL state
Position: 169
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2310) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2023) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:217) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:421) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:318) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:310) ~[postgresql-9.4.1209.jre7.jar:9.4.1209.jre7]
at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:473) ~[spring-jdbc-4.3.2.RELEASE.jar:4.3.2.RELEASE]
... 64 common frames omitted
However if I run this script from pgAdminIII there are no errors and the view with the corresponding rule are created without any problem.
What am I doing wrong here?
This is the structure of my Spring Boot example to reproduce it.
src/main/java/com/example/model/Person.java
package com.example.model;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
#Entity
public class Person implements Serializable {
private static final long serialVersionUID = 1334414548362400146L;
#Id
private long id;
#Column(nullable = false, length = 100)
private String name = "";
#Column(nullable = false, length = 100)
private String surname = "";
}
src/main/java/com/example/model/PersonRole.java
package com.example.model;
import java.io.Serializable;
import javax.persistence.EmbeddedId;
import javax.persistence.Entity;
#Entity
public class PersonRole implements Serializable {
private static final long serialVersionUID = -3953147119216643027L;
#EmbeddedId
private PersonRoleKey primaryKey;
}
src/main/java/com/example/model/PersonRoleKey.java
package com.example.model;
import java.io.Serializable;
import javax.persistence.Embeddable;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.ForeignKey;
import javax.persistence.ManyToOne;
import javax.persistence.PrimaryKeyJoinColumn;
#Embeddable
public class PersonRoleKey implements Serializable {
private static final long serialVersionUID = 2105526364632711640L;
#ManyToOne(optional = false)
#PrimaryKeyJoinColumn(foreignKey = #ForeignKey(name = "person_fk"))
private Person person;
#Enumerated(EnumType.STRING)
private Role role;
}
src/main/java/com/example/model/Role.java
package com.example.model;
public enum Role {
ADMIN, USER;
}
src/main/java/com/example/DemoApplication.java
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
src/main/resources/application.properties
#Database configuration
spring.datasource.url: jdbc:postgresql://localhost:5432/postgres
spring.datasource.driverClassName: org.postgresql.Driver
spring.datasource.username: postgres
spring.datasource.password: postgres
spring.datasource.platform: postgresql
spring.datasource.continue-on-error: false
spring.jpa.properties.hibernate.dialect: org.hibernate.dialect.PostgreSQLDialect
spring.jpa.properties.hibernate.format_sql: true
spring.jpa.generate-ddl: true
spring.jpa.hibernate.ddl-auto: update
#default means org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl
spring.jpa.properties.hibernate.implicit_naming_strategy: default
spring.jpa.hibernate.naming.physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
#spring.jpa.properties.hibernate.implicit_naming_strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyHbmImpl
spring.jpa.properties.hibernate.auto_quote_keyword: true
spring.jpa.show-sql: false
src/main/resources/schema-postgresql.sql
CREATE OR REPLACE VIEW v_peoples_roles AS
SELECT p.id,
p.name,
p.surname,
pr.role
FROM (person p
JOIN personrole pr ON ((p.id = pr.person_id)));
CREATE OR REPLACE RULE insert_v_peoples_roles AS
ON INSERT TO v_peoples_roles DO INSTEAD ( INSERT INTO person (id, name, surname)
VALUES (new.id, new.name, new.surname);
INSERT INTO personrole (person_id, role)
VALUES (new.id, new.role);
);
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<hibernate.version>5.2.2.Final</hibernate.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
The whole code could be downloaded from here.
EDIT
Based on the poz's comment I changed the schema-postgresql.sql to
CREATE OR REPLACE VIEW v_peoples_roles AS
SELECT p.id,
p.name,
p.surname,
pr.role
FROM (person p
JOIN personrole pr ON ((p.id = pr.person_id)));
CREATE OR REPLACE FUNCTION insert_into_v_people_roles() RETURNS TRIGGER AS $$
BEGIN
INSERT INTO person (id, name, surname) VALUES (new.id, new.name, new.surname);
INSERT INTO personrole (person_id, role) VALUES (new.id, new.role);
RETURN new;
END;
$$ LANGUAGE plpgsql;
DROP TRIGGER IF EXISTS insert_v_peoples_roles ON v_peoples_roles;
CREATE TRIGGER insert_v_peoples_roles INSTEAD OF INSERT ON v_peoples_roles FOR EACH ROW EXECUTE PROCEDURE insert_into_v_people_roles();
But it produces another error, exactly like predicted.
ERROR: unterminated quoted string at or near "$$ BEGIN INSERT INTO person (id, name, surname) VALUES (new.id, new.name, new.surname)"
Because pozs has not posted his own answer and some time has passed I am doing it by myself.
Changing the CREATE RULE to an INSTEAD OF triggered and $$-quoting to '-quoting solved the problem. The only issue was that I had to escape all the apostrophes inside function definitions. Was not that big of a pain though.