目录项目升级概览升级时间线第一步:环境准备1.1 Java 环境升级1.2 Maven 配置更新第二步:核心依赖升级2.1 Spring Boot 版本升级2.2 数据库相关依赖升级第三步:包名迁移 (javax → jakarta)3.1 核心包名变更3.
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