I’m working on spring boot 2 application and trying to establish connection with postgresql database with configuring hikari datasource and spring Jpa. I’m succeed in that and i’m using hibernate.hbm2ddl.auto as update so it is creating table if not exists, but only the problem is it is throwing an exception when schema does not exist Error I configured everything manually
Tag: spring-boot
How do you specify default values for Jackson deserialization
Up here is my Controller code. Up here is my User class code. When I POST the JSON above, I get the age property to be null. I want Jackson to deserialize the empty fields (“” or null) in JSON with default values. Like this: What should I do? Answer You can define a custom getter property where setting your
How do I force a Spring Boot JVM into UTC time zone?
I saw Force Java timezone as GMT/UTC I tried mvn spring-boot:run -Dexec.args=”-Duser.timezone=GMT” mvn spring-boot:run -Dexec.args=”-Duser.timezone=UTC” user.timezone=UTC in config/application.properties user.timezone=GMT In the pom.xml: mvn spring-boot:run -Dspring-boot.run.jvmArguments=”-Duser.timezone=UTC” But it prints out sun.util.calendar.ZoneInfo[id=”America/New_York”,offset=-18000000,dstSavings=3600000,useDaylight=true,transitions=235,lastRule=java.util.SimpleTimeZone[id=America/New_York,offset=-18000000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=8,startDayOfWeek=1,startTime=7200000,startTimeMode=0,endMode=3,endMonth=10,endDay=1,endDayOfWeek=1,endTime=7200000,endTimeMode=0]] Spring Boot 1.5.19, Java 8 Answer Use spring-boot.run.jvmArguments property if you want to pass JVM options from Maven Spring Boot Plugin to forked Spring Boot application: This is be equivalent
Spring Boot: How to disable Tomcat startup logging?
I’m using Spring Boot 2.0.x with Logback. On startup of my application (using an embedded tomcat), I see several INFORMATION log messages (written to standard error) which apparently originate directly from the embedded tomcat. In contrast to the rest of all my logging, these messages seem to not be written by Logback. The messages have the following content: I’m not
Spring: Check if a classpath resource exists before loading
I have a code where I need to check if a classpath resource exists and apply some actions. Problem: ResourceUtils.getFile() throws FileNotFoundException if the resource doesn’t exist. At the same time I don’t want to use exceptions for code flow and I’d like to check if a resource exists. Question: Is there any way to check if a resource exists
Is there a way to use @OneToMany and @ManyToMany to handle polymorphism in hibernate
I am working on app that uses microservices architecture, i have project A which has this entity User with this code and another entity Authority and i have project B which has entity AAA with this code: so when i run the the project B I get the following error: org.hibernate.AnnotationException: Use of @OneToMany or @ManyToMany targeting an unmapped class:
How to get the value from system property in spring boot
I am using following command to run my spring boot application Currently, I am able to access it via following command like below However I need to access it via any annotation in Spring something like @value(${library.system.property}) I tried to use But the value of the property is null. Do I need to use conditional bean or something? Answer Thanks
Custom RestTemplate using requestFactory of RestTemplateBuilder in SpringBoot 2.1.x is not backward compatible with version 1.5.x
In Spring Boot 1.5.x, I was creating a custom RestTemplate like below: But, after migrating to Spring Boot 2.1.x, the above code doesn’t compile. Looks like requestFactory doesn’t take HttpComponentsClientHttpRequestFactory as an input parameter. Can anyone suggest how can I make the above code work in Spring Boot 2.1.x? Answer After digging deeper into the source code of RestTemplateBuilder of
Why this error coming failed to load elasticsearch nodes in spring boot?
I am trying to use elasticsearch in my webapplication. I am using spring boot 2.0.6. I didn’t add any configuration file elastic search is auto configured by spring boot. I added spring data elastic search properties in application.properties like this spring-data-elasticsearch-3.0.11 elasticsearch-5.6.12 When i run my application console showing I added one simple example for demo purpose but i am
Put user in HttpSession with Spring Security default login and authenticate
I precise that I am a french student in 1st year of Java Developper. I’m developing a little multi-module app using: Spring Boot, Spring security, Hibernate, Spring Data, Spring MVC and Thymeleaf. I would like to set the User in the session, or at least the userId, at login. This way I don’t have to put it manually in the