JDK21、springoobt3、springboot-cloud-alibaba 升级记录

你好，2024！

在使用了多的 jdk1.8 之后，借助于 jdk21 虚拟线程的诱惑下，终于狠下重新以 jdk21 位基准重新搭建微服务项目。本篇文章就升级中遇到的一些问题做个总结

前言

升级前请将 idea 升级至最新版本！！！

架构说明

项目的基础架构为：

sprignboot、springboot-cloud-alibaba、nacos、sentinel

原先微服务版本为:

插件	版本号
jdk	1.8
springboot	2.2.5.RELEASE
spring.cloud	Hoxton.SR3
spring-cloud-alibaba	2.2.1.RELEASE

升级后架构

插件	版本号
jdk	21
springboot	3.2.4
spring.cloud	2023.0.1
spring-cloud-alibaba	2022.0.0.0-RC2

<properties>
  <java.version>21</java.version>
  <spring-boot.version>3.2.4</spring-boot.version>
  <spring-cloud-alibaba.version>2022.0.0.0-RC2</spring-cloud-alibaba.version>
  <spring-cloud.version>2023.0.1</spring-cloud.version>
  <swagger.version>1.6.2</swagger.version>
  <knife4j.version>4.3.0</knife4j.version>
  <sa-token.version>1.37.0</sa-token.version>
  <hutool.version>5.8.20</hutool.version>
  <lombok.version>1.18.32</lombok.version>
  <mybatis-plus.version>3.5.5</mybatis-plus.version>
</properties>

<dependencies>
  <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
  </dependency>
  <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
  </dependency>
  <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
  </dependency>

  <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-alibaba-sentinel-datasource</artifactId>
  </dependency>

  <dependency>
      <groupId>com.alibaba.csp</groupId>
      <artifactId>sentinel-datasource-nacos</artifactId>
  </dependency>
  <!--服务调用-->
  <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-openfeign</artifactId>
  </dependency>

  <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-loadbalancer</artifactId>
  </dependency>

  <dependency>
      <groupId>io.github.openfeign</groupId>
      <artifactId>feign-okhttp</artifactId>
  </dependency>

  <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-bootstrap</artifactId>
  </dependency>

  <!--    swagger 帮助文档    -->
  <dependency>
      <groupId>io.swagger</groupId>
      <artifactId>swagger-annotations</artifactId>
      <version>${swagger.version}</version>
  </dependency>


  <dependency>
      <groupId>com.github.xiaoymin</groupId>
      <artifactId>knife4j-openapi3-jakarta-spring-boot-starter</artifactId>
      <version>${knife4j.version}</version>
  </dependency>

  <!-- Sa-Token 整合 Redis (使用 jackson 序列化方式) -->
  <dependency>
      <groupId>cn.dev33</groupId>
      <artifactId>sa-token-redis-jackson</artifactId>
      <version>${sa-token.version}</version>
  </dependency>

  <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-pool2</artifactId>
  </dependency>

  <!--hutool工具包-->
  <dependency>
      <groupId>cn.hutool</groupId>
      <artifactId>hutool-all</artifactId>
      <version>${hutool.version}</version>
  </dependency>

  <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>${lombok.version}</version>
      <optional>true</optional>
  </dependency>

  <dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
    <version>${mybatis-plus.version}</version>
  </dependency>
</dependencies>

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-dependencies</artifactId>
      <version>${spring-boot.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
    <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-alibaba-dependencies</artifactId>
      <version>${spring-cloud-alibaba.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-dependencies</artifactId>
      <version>${spring-cloud.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

插件升级

插件	升级前	升级后
mybatis-plus	mybatis-plus-boot-starter	mybatis-plus-spring-boot3-starter
sa-token	sa-token-spring-boot-starter	sa-token-spring-boot3-starter
dynamic-datasource	dynamic-datasource-spring-boot-starter	mybatis-plus-spring-boot3-starter
knife4j	knife4j-openapi3-spring-boot-starter	knife4j-openapi3-jakarta-spring-boot-starter
lombok	1.18.28	1.18.32

项目代码升级

升级前	升级后
import java.servlet	import jakarta.servlet
import javax.validation	import jakarta.validation
import javax.annotation	import jakarta.annotation

配置文件升级

redis

yml 文件中由 spring.redis 改为 spring.data.redis

遇到的问题及解决方案

问题一：Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,b 解决方案：在 idea 启动主类时添加参数： --add-opens java.base/java.lang=ALL-UNNAMED

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