Fix the “Login Pool Is Empty and Connection Creation Failed” error with 5 proven solutions for HikariCP, Spring Boot, MySQL, PostgreSQL, JDBC, and database connection pools.

API 作为业务数据传输与功能调用的核心入口，是网络攻防的关键攻击面。攻击者可绕过前端交互限制，直接调用接口、篡改参数、越权访问后端数据，因此 API 安全是 Web 安全与红队测试的核心重点。 一、API 核心概念 API（Application Programming Interface，应用程序 ...

Before you start the upgrade, make sure to upgrade to the latest available 2.7.x version. This will make sure that you are building against the most recent ...

Abstract: This paper presents a comprehensive solution for enhancing security and traceability in web applications by auditing mutating REST operations (PUT, POST, PATCH, DELETE). The proposed ...

The Jakarta Persistence API (JPA) is a specification that defines a standardized framework for data persistence. Persistence is the fundamental mechanism for saving and retrieving data over time. In ...

Community driven content discussing all aspects of software development from DevOps to design patterns. MySQL remains one of the most popular, open-source databases in the Java community, while ...

Spring Boot is the most popular Java framework for building cloud-native applications, and Hibernate is the most popular object-relational mapping framework for implementing the JPA spec. This Spring ...

Abstract: To support managers in effectively distributing and overseeing IT technology teaching resources, the author suggests implementing an online education system built on the Spring Boot ...

The Java ecosystem is bursting with tools and frameworks for just about every programming need. Here are seven open source Java projects you don't want to miss. The Java ecosystem is home to an ...