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场景 一步一步教你在IEDA中快速搭建SpringBoot项目： https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/87688277 插件的安装参照下面博客 IDEA中SpringBoot项目使用@Data要安装Lombok插件 https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/88362861 项目使用EasyCode插件自动生成代码，EasyCode代码的使用参照 IDEA中安装EasyCode插件并连接数据库生成代码： https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/103132436 实现 搭建数据库 本地安装Mysql 8.0 ,并安装连接Mysql的工具 Navicat，新建数据库usr，并新建表user IDEA中新建SpringBoot项目 参照上面博客在IDEA中搭建好SpringBoot项目，搭建好后的项目目录为 在badao包下新建应用启动类 package com.badao.usermanage; import org.springframework.boot.SpringApplication; import org.springframework.boot

I have a Spring Boot application that exposes some endpoints. From a React app I want to make requests to these endpoints, but it keeps giving me CORS problem: access to XMLHttpRequest at 'localhost:9090/helios-admin/api/dashboard/clients?page=0&size=30' from origin ' http://localhost:3000 ' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https. So I've tried using @CrossOrigin annotation for all my methods and also for the Controller class, but the error is the same. The get request in my react app looks

场景 一步一步教你在IEDA中快速搭建SpringBoot项目： https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/87688277 插件的安装参照下面博客 IDEA中SpringBoot项目使用@Data要安装Lombok插件 https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/88362861 项目使用EasyCode插件自动生成代码，EasyCode代码的使用参照 IDEA中安装EasyCode插件并连接数据库生成代码： https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/103132436 实现 搭建数据库 本地安装Mysql 8.0 ,并安装连接Mysql的工具 Navicat，新建数据库usr，并新建表user IDEA中新建SpringBoot项目 参照上面博客在IDEA中搭建好SpringBoot项目，搭建好后的项目目录为 在badao包下新建应用启动类 package com.badao.usermanage; import org.springframework.boot.SpringApplication; import org.springframework.boot