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Spring / May 21, 2022 / Leave a comment

how to check the list is not null in spring boot rest request entity

Issue I have a rest request entity in spring boot controller define like this: package com.dolphin.rpa.application.command.credential; import io.swagger.annotations.ApiModelProperty; import lombok.Data;…

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Spring / May 21, 2022 / Leave a comment

Convert JSON String to File in Java

Issue I’m trying to convert an Object to JSON then convert it to File to be able to send it…

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Spring / May 21, 2022 / Leave a comment

Spring security custom filter called twice for REST Controller

Issue I implemented a custom Spring Security Filter to have a custom Authentication system. This works fine. To configure my…

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Spring / May 21, 2022 / Leave a comment

Spring Boot JPA/JDBC batching findById works but findOneByX not working

Issue I am using Spring Boot JPA, I have enabled batching by ensuring the following lines are in the my…

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Spring / May 21, 2022 / Leave a comment

How to split two json String

Issue I have a string but it contains two object like the following {"firstName":"A","lastName":"Z"}{"firstName":"B","lastName":"Y"} I got this string as a…

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Spring / May 21, 2022 / Leave a comment

Spring boot could not resolve placeholder in string

Issue I am running spring-boot on an embedded tomcat server through maven with mvn clean install spring-boot:run. But every time…

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Spring / May 21, 2022 / Leave a comment

Aggregation Annotation Not Working It is Returning Empty

Issue I am trying to make this Aggregation bellow using Spring Java, but it’s returning an Empty List on my…

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Spring / May 21, 2022 / Leave a comment

Why Spring Boot 2.0 application does not run schema.sql?

Issue While I was using Spring Boot 1.5, on application startup Hibernate executed schema.sql file located in /resources folder when…

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Spring / May 21, 2022 / Leave a comment

rest api with spring : Create a new entity based on another one

Issue I’m new to java and spring. I have two classes Class 1 class A { Long id; String attr1;…

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Spring / May 21, 2022 / Leave a comment

Get a Thymeleaf template fragment in Java

Issue I have a template : <div th:fragment="subject"> [[${var1}]] – blabla </div> <div th:fragment="body"> titi </div> In Java : I…

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