i have a case like in my form (front end), i can fill personal data (name, address, DOB) and then i can attach multiple image. In my spring boot controller : My model wrapper : Front end (React) Code : With above example, i always encounter errors. like : java.io.IOException: Stream closed and zero attachment length / zero attachment size
Tag: spring-boot
Using Spring data JPA EntityGraph with LAZY load mode for NamedAttributeNode field
I am facing with 2 problems: N + 1 query and Out Of Memory (OOM). I solved OOM by paging and lazy loading: But when I use lazy loading, N + 1 query happened. So I try to use EntityGraph as https://www.baeldung.com/spring-data-jpa-named-entity-graphs. But as my researches and local test, EntityGraph always do eager loading for NamedAttributeNode field – association field,
Spring Boot REST API using LDAP authentication
So I’m trying to build a REST API that will use LDAP authentication. Basically, when my login endpoint is consumed, I want it to detect credentials using httpBasic authentication and then use those credentials against my LDAP server. I also want to take into account user roles, protecting endpoints so that only certain users with the proper roles can access
Deploying spring boot application to heroku – error message “No web processes running”
I created a spring boot web application (in IntelliJ IDEA), which runs locally without problems. I then built an artifact (Build -> Build Artifacts… -> my_app:jar -> Build), which created a jar file in directory “out”. I tried to deploy the app to heroku following exactly the steps described in this walkthrough by heroku: https://devcenter.heroku.com/articles/deploying-spring-boot-apps-to-heroku Note: the walkthrough does not
Why has javax.persistence-api been replaced by jakarta.persistence-api in spring data jpa starter?
I’ve recently started to learn spring boot, data jpa. As I can see from this, the spring boot data jpa starter uses jakarta.persistence-api instead of javax.persistence-api: What is the differences between jakarta.persistence-api and javax.persistence-api? What is the reason of this replacement? Answer From Java Persistence API on Wikipedia: The Java Persistence API (JPA), in 2019 renamed to Jakarta Persistence, is
How to deploy Spring Boot application in Google Cloud Compute Engine?
I am a new to Google Cloud platform. I want to deploy my Spring Boot project in Compute Engine because deploying in App Engine costs more than the Compute Engine. There are a lot of videos/articles are available in YouTube/Websites for deploying in App Engine but I did not find any tutorial on deploying Spring Boot app in Compute Engine.
How to store JSON file as a JSON datatype in mysql using Hibernate / Spring boot?
I’ve tried several ways of storing a json file in a database but it ends up creating different columns for each entry. I want to store it as a “json” type in a single column. Is it possible? My json file. users.json It’s a spring-boot application and I’ve the relevant controllers and services. In my domain package. (Address and Company
Swagger Codegen basePath is being ignored
I’m trying to generate some web services definitions using Swagger Codegen ยป 2.2.1 All configs are working and the classes are generate correctly by my .yaml definitions. Why the property basePath is being ignored? My @RestController generate using only paths definition: Expected (using basePath and paths definitions): What am I doing wrong? Did I forget something? My .yaml contract: Answer
Geting list of protobuf message objects from the SpringBoot
I want to get a list of protobuf message objects from the Spring boot app. I did manage to get a single protobuf message object from the app but getting a list of them throws exception. My code (simplified). tl;dr create Spring boot app generate class from proto file try return List of generated class objects (RESTful) My code (simplified).
Is there way to use @Scheduled together with Duration string like 15s and 5m?
I have following annotation in my code At this case I have to have properties like this Propery file looks unreadable because I have calculate value to miliseconds. Is there way to pass value like 5m or 30s there ? Answer As far as I know, you can’t do it directly. However, Spring boot configuration properties do support automatic conversion