Questions tagged [spring-boot]
Use the Spring Boot tag for questions related to spring boot framework and the features it brings to your Web application. This includes questions about configuration, embedding of the Web servers, setting up metrics, health checks, externalized configuration etc. It does not include questions about the Web server itself, Java code running in your application, or standard spring components. Tag these questions with its own tags to get the best response!
spring-boot
149,459
questions
1077
votes
65
answers
1.1m
views
How to configure port for a Spring Boot application
How do I configure the TCP/IP port listened on by a Spring Boot application, so it does not use the default port of 8080.
- 62.5k
572
votes
31
answers
1.1m
views
How to access a value defined in the application.properties file in Spring Boot
I want to access values provided in application.properties, e.g.:
logging.level.org.springframework.web: DEBUG
logging.level.org.hibernate: ERROR
logging.file=${HOME}/application.log
userBucket.path=...
- 9,468
539
votes
25
answers
693k
views
How can I log SQL statements in Spring Boot?
I want to log SQL statements to a file.
I have the following properties in application.properties:
spring.datasource.url=...
spring.datasource.username=user
spring.datasource.password=1234
spring....
- 21k
490
votes
18
answers
929k
views
How can I set the logging level with application.properties?
This is very simple question, but I cannot find information. (Maybe my knowledge about Java frameworks is severely lacking.)
How can I set the logging level with application.properties? And logging ...
- 11.1k
444
votes
6
answers
239k
views
What is the purpose of mvnw and mvnw.cmd files?
When I created a Spring Boot application I could see mvnw and mvnw.cmd files in the root of the project. What is the purpose of these two files?
- 5,774
441
votes
20
answers
510k
views
Running code after Spring Boot starts
I want to run code after my spring-boot app starts to monitor a directory for changes.
I have tried running a new thread but the @Autowired services have not been set at that point.
I have been ...
- 4,585
380
votes
9
answers
180k
views
What is the difference between putting a property on application.yml or bootstrap.yml in spring boot?
What is the difference between putting a property on application.yml or bootstrap.yml in spring boot?
In logging.config case, the application works differently.
- 5,074
372
votes
40
answers
763k
views
org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
I am trying run a spring-boot application which uses hibernate via spring-jpa, but i am getting this error:
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null ...
- 8,795
363
votes
53
answers
1.2m
views
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured
I am working on a Spring Boot Batch example with MongoDB and I have already started the mongod server.
When I launch my application, I am getting the error below.
Any pointers for this issue?
******...
- 8,646
342
votes
10
answers
569k
views
Spring Boot configure and use two data sources
How can I configure and use two data sources?
For example, here is what I have for the first data source:
application.properties
#first db
spring.datasource.url = [url]
spring.datasource.username = [...
- 3,432
329
votes
17
answers
630k
views
Setting active profile and config location from command line in Spring Boot
I have a Spring Boot application.
I have three profiles in my application-> development, staging and production. So I have 3 files
application-development.yml
application-staging.yml
application-...
- 3,977
319
votes
19
answers
534k
views
How do I activate a Spring Boot profile when running from IntelliJ?
I have 5 environments:
- local (my development machine)
- dev
- qc
- uat
- live
- staging
I want different application properties to be used for each environment, so I have the following ...
- 5,241
309
votes
22
answers
508k
views
Spring Boot - Loading Initial Data
I'm wondering what the best way to load initial database data before the application starts? What I'm looking for is something that will fill my H2 database with data.
For example, I have a domain ...
- 3,953
308
votes
4
answers
298k
views
What is this spring.jpa.open-in-view=true property in Spring Boot?
I saw spring.jpa.open-in-view=true property in Spring Boot documentation for JPA configuration.
Is the true default value for this property if it's not provided at all?;
What does this really do? I ...
- 8,427
297
votes
15
answers
434k
views
Override default Spring-Boot application.properties settings in Junit Test
I have a Spring-Boot application where the default properties are set in an application.properties file in the classpath (src/main/resources/application.properties).
I would like to override some ...
- 49k
288
votes
29
answers
431k
views
How can I add a filter class in Spring Boot?
Is there any annotation for a Filter class (for web applications) in Spring Boot? Perhaps @Filter?
I want to add a custom filter in my project.
The Spring Boot Reference Guide mentioned about
...
- 8,682
285
votes
34
answers
620k
views
Spring boot - Not a managed type
I use Spring boot+JPA and having a problem while starting the service.
Caused by: java.lang.IllegalArgumentException: Not an managed type: class com.nervytech.dialer.domain.PhoneSettings
at org....
- 8,788
281
votes
24
answers
323k
views
Why does my Spring Boot App always shutdown immediately after starting?
This is my first Spring Boot code. Unfortunately, it always shuts down. I was expecting it to run continuously so that my web client can get some data from the browser.
package hello;
import org....
- 4,472
281
votes
11
answers
236k
views
Difference between Spring MVC and Spring Boot [closed]
I have just started learning Spring. In my next step, I would like to develop bigger web applications.
Now I am wondering if I should start with Spring Boot or Spring MVC. I have already read some ...
- 13.3k
272
votes
4
answers
165k
views
Difference between @Mock, @MockBean and Mockito.mock()
When creating tests and mocking dependencies, what is the difference between these three approaches?
@MockBean:
@MockBean
MyService myservice;
@Mock:
@Mock
MyService myservice;
Mockito.mock()
...
- 6,199
263
votes
10
answers
239k
views
Compilation error after upgrading to JDK 21 - "NoSuchFieldError: JCImport does not have member field JCTree qualid"
After upgrading to JDK 21, I have the following compilation error in my Spring Boot project:
Fatal error compiling: java.lang.NoSuchFieldError:
Class com.sun.tools.javac.tree.JCTree$JCImport does not ...
- 16.9k
262
votes
11
answers
354k
views
Spring Boot YAML configuration for a list of strings
I am trying to load an array of strings from the application.yml file. This is the config:
ignore:
filenames:
- .DS_Store
- .hg
This is the class fragment:
@Value("${ignore....
- 5,887
246
votes
55
answers
926k
views
Consider defining a bean of type 'package' in your configuration [Spring-Boot]
I am getting the following error:
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method setApplicant in webService.controller....
- 11.8k
238
votes
22
answers
519k
views
Add context path to Spring Boot application
I am trying to set a Spring Boot applications context root programmatically. The reason for the context root is we want the app to be accessed from localhost:port/{app_name} and have all the ...
- 2,543
238
votes
36
answers
607k
views
Spring Boot - Cannot determine embedded database driver class for database type NONE
This is the error that is thrown when trying to run my web app:
[INFO] WARNING: Nested in org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework....
- 34.6k
238
votes
16
answers
293k
views
Unable to find a @SpringBootConfiguration when doing a JpaTest
I'm trying to run a simple Junit test to see if my CrudRepositories are indeed working.
The error I keep getting is:
Unable to find a @SpringBootConfiguration, you need to use @ContextConfiguration ...
- 2,421
228
votes
28
answers
615k
views
Read file from resources folder in Spring Boot
I'm using Spring Boot and json-schema-validator. I'm trying to read a file called jsonschema.json from the resources folder. I've tried a few different ways but I can't get it to work. This is my code....
- 4,237
224
votes
7
answers
506k
views
How do I retrieve query parameters in a Spring Boot controller?
I am developing a project using Spring Boot. I've a controller which accepts GET requests.
Currently I'm accepting requests to the following kind of URLs:
http://localhost:8888/user/data/002
but ...
- 2,561
222
votes
28
answers
279k
views
Spring Boot not serving static content
I can't get my Spring-boot project to serve static content.
I've placed a folder named static under src/main/resources. Inside it I have a folder named images. When I package the app and run it, it ...
- 4,096
221
votes
3
answers
101k
views
Spring Boot - parent pom when you already have a parent pom
Is there a specific recommended approach to the inclusion of the spring-boot parent pom into projects that already have a required parent POM?
What do you recommend for projects that need to extend ...
- 3,812
216
votes
20
answers
171k
views
Spring Boot application as a Service
How to configure nicely Spring Boot application packaged as executable jar as a Service in the Linux system? Is this recommended approach, or should I convert this app to war and install it into ...
- 31.3k
215
votes
11
answers
236k
views
How do I tell Spring Boot which main class to use for the executable jar?
Execution default of goal
org.springframework.boot:spring-boot-maven-plugin:1.0.1.RELEASE:repackage
failed:
Unable to find a single main class from the following candidates
My project has more ...
- 261k
208
votes
17
answers
276k
views
Classpath resource not found when running as jar
Having this problem both in Spring Boot 1.1.5 and 1.1.6 - I'm loading a classpath resource using an @Value annotation, which works just fine when I run the application from within STS (3.6.0, Windows)....
- 4,680
203
votes
12
answers
293k
views
Disable all Database related auto configuration in Spring Boot
I am using Spring Boot to develop two applications, one serves as the server and other one is a client app. However, both of them are the same app that function differently based on the active profile....
- 3,258
201
votes
11
answers
364k
views
Spring Boot REST service exception handling
I am trying to set up a large-scale REST services server. We're using Spring Boot 1.2.1 Spring 4.1.5, and Java 8. Our controllers are implementing @RestController and the standard @RequestMapping ...
- 3,991
199
votes
11
answers
340k
views
What is username and password when starting Spring Boot with Tomcat?
When I deploy my Spring application via Spring Boot and access localhost:8080 I have to authenticate, but what is the username and password or how can I set it? I tried to add this to my tomcat-users ...
- 3,661
198
votes
25
answers
382k
views
java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
I am getting this exception java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7 and java.lang.NoClassDefFoundError: Could not initialize class org....
- 2,141
197
votes
20
answers
366k
views
How to set base url for rest in spring boot?
I'm trying to to mix mvc and rest in a single spring boot project.
I want to set base path for all rest controllers (eg. example.com/api)
in a single place (I don't want annotate each controller with @...
- 9,175
195
votes
4
answers
199k
views
Difference between Interceptor and Filter in Spring MVC
I'm a little bit confused about Filter and Interceptor purposes.
As I understood from docs, Interceptor is run between requests. On the other hand Filter is run before rendering view, but after ...
- 2,310
194
votes
30
answers
461k
views
ApplicationContextException: Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean
I have written a spring batch application using Spring boot. When I am trying to run that application using command line and classpath on my local system it is running fine. However, when I tried to ...
- 2,455
193
votes
19
answers
453k
views
Spring Boot Remove Whitelabel Error Page
I'm trying to remove white label error page, so what I've done was created a controller mapping for "/error",
@RestController
public class IndexController {
@RequestMapping(value = "/error")
...
- 13.5k
193
votes
8
answers
270k
views
Could not autowire field:RestTemplate in Spring boot application
I am getting below exception while running Spring Boot application during start up:
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'testController':
Injection ...
- 2,852
189
votes
4
answers
215k
views
Does application.yml support environment variables?
I tried using env variables in my application.yml configration like:
spring:
main:
show_banner: false
---
spring:
profiles: production
server:
address: $OPENSHIFT_DIY_IP
port: $...
- 11.3k
185
votes
28
answers
421k
views
Spring Boot: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean
I am totally new to Spring and started to do the official guides from this site:
https://spring.io/guides
I'd like to do this guide:
https://spring.io/guides/gs/scheduling-tasks/
I get the following ...
- 2,149
183
votes
1
answer
193k
views
How to determine programmatically the current active profile using Spring boot [duplicate]
Is there a way programmatically to get the current active profile within my bean?
- 21.4k
182
votes
14
answers
244k
views
Spring Boot + JPA : Column name annotation ignored
I have a Spring Boot application with dependency spring-boot-starter-data-jpa. My entity class has a column annotation with a column name. For example:
@Column(name="TestName")
private ...
- 2,258
181
votes
11
answers
165k
views
Speed up Spring Boot startup time
I have a Spring Boot application. I've added a lot of dependencies (unfortunately, looks I need all of them) and the startup time went up quite a lot. Just doing a SpringApplication.run(source, args) ...
- 2,306
179
votes
29
answers
434k
views
Spring Boot: Cannot access REST Controller on localhost (404)
I am trying to adapt the REST Controller example on the Spring Boot website.
Unfortunately I've got the following error when I am trying to access the localhost:8080/item URL.
{
"timestamp": ...
- 4,188
176
votes
13
answers
679k
views
Spring Boot and multiple external configuration files
I have multiple property files that I want to load from classpath. There is one default set under /src/main/resources which is part of myapp.jar. My springcontext expects files to be on the classpath. ...
- 3,820
176
votes
12
answers
278k
views
Java Spring Boot: How to map my app root (“/”) to index.html?
How can I map my app root http://localhost:8080/ to a static index.html?
If I navigate to http://localhost:8080/index.html its works fine.
My app structure is :
My config\WebConfig.java looks like ...
- 7,234