Spring Boot JPA H2 Console not running, application.properties file ignored - gradle

Question

The Spring Boot guide says I can get the H2 console but it's not working for me.
http://localhost:8080/h2/ Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Oct 26 12:31:46 BST 2016
There was an unexpected error (type=Not Found, status=404).
No message available
I created an application.properties file as follows
spring.h2.console.enabled=true
spring.h2.console.path=/h2
My project is based on this
The default path /h2-console doesn't work either.
I found another answer where the problem is solved by adding to Application.java:
#Bean
public ServletRegistrationBean h2servletRegistration() {
ServletRegistrationBean registration = new ServletRegistrationBean(new WebServlet());
registration.addUrlMappings("/h2/*");
return registration;
}
Everything in my application.properties file is ignored. I have tried adding:
spring.datasource.url=jdbc:h2:file:~/portal;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driverClassName=org.h2.Driver
But the database is still created in memory only.

Answer 1

Check if you set a base path in application.properties.
For example, if you have a setting
server.contextPath=/api
You access the h2 Console under
http://localhost:8080/api/h2-console
Obvious, but that was it for me

Answer 2

Another possible cause for this problem, is if you're using spring security.
In that case, you may want to add a specific permission to the h2-console URL you defined.
For example, for the default h2-console configuration (without a spring.h2.console.path property), you will add this inside your WebSecurityConfigurerAdapter extending class:
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.antMatchers("/h2-console/**").permitAll()
.anyRequest().authenticated();
http.headers().frameOptions().sameOrigin();
}
Please also note that line at the end - http.headers().frameOptions().sameOrigin();.
It's needed to prevent a Whitelable page error when logging in to the console.
This is described also here.

Answer 3

Your current location src\main\java\h‌​ello\application.pro‌​perties is the culprit. For 2 reasons.
Non java resources in src\main\java are ignored
only application.properties in the root or config directory or taken into account (by default). (See the reference guide).
The fix is to simply move your application.properties to src\main\resources.

Answer 4

In my case, I just had to remove the tag <scope>runtime</scope> from the h2 dependency as explained in here.

Answer 5

a / is missing before spring.h2.console.path it have to look like :
spring.h2.console.path=/h2
also when you indicate spring.h2.console.path /h2-console is no more available
Regards

Answer 6

I tried h2-console while building my microservice project and fell into the same issue "Whitelabel error page".
I haven't added any security in my project for now but I found the problem for me is solved by removing spring.h2.console.enabled= true from application.properties and adding dependency dev-tools. for me not adding dev-tools also caused the problem so try to add this dependency as well. while of course, you will add h2, actuator, web dependencies.

Answer 7

Try the below in application.properties
spring.h2.console.enabled: true

Answer 8

try to add to application.properties
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
//then
create class SecurityConfig
#Configuration
#EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity httpSecurity) throws Exception {
httpSecurity.authorizeRequests().antMatchers("/").permitAll().and()
.authorizeRequests().antMatchers("/h2-console/**").permitAll();
httpSecurity.csrf().disable();
httpSecurity.headers().frameOptions().disable();
}
}

Answer 9

For me scope=test was the issue as I carelessly copied from https://mvnrepository.com/artifact/com.h2database/h2/1.4.200
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.200</version>
<scope>test</scope>
</dependency>
And replaced it with
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.200</version>
<scope>runtime</scope>
</dependency>
After this, it should work with default configurations.
I am not using spring security, but you might need to make certain changes accordingly. Please check above answers for that https://stackoverflow.com/a/59729714/7359806

Answer 10

First, make sure to have these dependencies:
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
Then add these to your application.properties:
##spring.main.web-application-type=none make sure it's commented
spring.h2.console.enabled=true
spring.h2.console.path=/h2-console
##server.port=9999 make sure you use default port (8080). In other words, don't specify a server.port

Answer 11

For me - a computer restart fixed it.
Not sure why this would be the cause but perhaps a port was occupied, or the h2 related files were not deployed correctly
make sure you that when the springBoot application is launched, you can see the log lines for Hibernate and H2 are present:
2017-04-22 14:41:03.195 INFO 912 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.0.12.Final}
2017-04-22 14:41:03.197 INFO 912 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2017-04-22 14:41:03.199 INFO 912 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2017-04-22 14:41:03.278 INFO 912 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2017-04-22 14:41:03.469 INFO 912 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
2017-04-22 14:41:03.935 INFO 912 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000227: Running hbm2ddl schema export
2017-04-22 14:41:03.945 INFO 912 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete

Answer 12

For this problem, i just add the default string at my application.properties and works.
spring.datasource.url=jdbc:h2:file:~/test
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driver-class-name=org.h2.Driver
Maybe the spring boot dont set this for some reason.

Answer 13

Remove <scope>test</scope> from h2 dependency in pom.xml works in my case.
Don't forget to reinstall and build again after your modification.
<!-- H2 database -->
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.199</version>
<!-- <scope>test</scope> -->
</dependency>

Answer 14

I used compile otherwise testCompile in the Gradle declaration and was worked fine for me.
Example:
compile group: 'com.h2database', name: 'h2', version: '1.4.200'

Answer 15

If you are having troubles with the program ignoring the application.properties and you are using Eclipse, do the following:
Move the application.properties into the src/main/resources folder, right click on it and click "build path" -> "Add to build path"

Answer 16

Make sure to use> spring.datasource.url=jdbc:h2:mem:testdb as this db is required for h2

Answer 17

I found the same case using Eclipse 4.26.0
Did some of above method and not work. Until in one forum, someone suggest us to add devtools dependency.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
I hope it works for you.