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Understandn and use basic CRUD operations directly on the database using the methods provided by CrudRepository.
263 Comments on "Spring Boot Quick Start 29 – Making Crud Operations with Repository"
Can not find "findOne" method in Spring boot 2.0.3 release. the other option is findById but it return Option<Entity instance/Topic> Please help
It's a really good example of data base, let me guess what I need to do to lose all data, I think that I just need to restart the server.
I see that the update method compared to the update method in the lesson before only updates every value besides the id itself.
Hi, On first attempt to run the application after creating the @Entity and extends CrudRepository and calling Crud operations, I am getting the below exception on console while connecting to Derby Database while starting the application itself: org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL via JDBC StatementCaused by: java.sql.SQLSyntaxErrorException: Schema 'SA' does not exist. Didn't understand how to resolve it. Seek Help. Thanks.
I got an error Spring Boot – Cannot determine embedded database driver class for database type NONEI dont know why I would get it if I am using embedded db.and I could not resolve it, I was using application.properties file if that even matters. To keep on going, I had to use h2 db as suggested by one of the stackoverflow ans, if anyone has an answer please comment below. Thank you
The update method does not work anymore.In order to create a simple UpdateById, you just have to set the Id (from the PathVariable) to the topic entity (from the RequestBody). topic.setId(Long topicId) and then save(topic).I hope this help!
CrudRepository.findOne() is gone as of Spring Data Core 2.0.7
use this :: CrudRepository.findById(String Id) —-> it returns the Optional, so you have to use this way,return topicRepository.findById(id).orElse(null);
Will it work If I don't have any set up for Derby database.Will it connect to Cloud?
Excellent tutorial. Looks like they replaced the findOne method with findById though :/
For whose have this error:Consider defining a bean named 'entityManagerFactory' in your configuration. Just try to delete the repository folder in maven that should be under $ ~/.m2/repository then go to the root of your project, wherever you have it and run $mvn clean installThen run again your project, and it should work without an issue. Here is the source: github.com/spring-guides/gs-accessing-data-mysql/issues/10
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