Spring 引导 Docker Spring R2DBC 应用程序在 Java 16 上的本机映像在不受支持的方法上失败

Question

我有一个基于 org.springframework.boot:spring-boot-starter-parent 版本 2.5.4-SNAPSHOT 和一些派生依赖项构建的简单应用程序：

org.springframework.boot:spring-boot-starter-data-r2dbc
org.springframework.boot:spring-boot-starter-webflux
org.springframework.boot:spring-boot-starter-actuator
io.r2dbc:r2dbc-postgresql

我使用 org.springframework.experimental:spring-native 版本 0.10.3 启用 Spring 本机并使用以下插件构建：

<properties>
    <java.version>16</java.version>
</properties>

<!-- native-docker profile -->
<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <image>
            <builder>paketobuildpacks/builder:tiny</builder>
            <env>
                <BP_BOOT_NATIVE_IMAGE>1</BP_BOOT_NATIVE_IMAGE>
            </env>
        </image>
        <fork>false</fork>
        <jvmArguments>--enable-preview</jvmArguments>
    </configuration>
</plugin>

我使用./mvnw.cmd spring-boot:build-image -Pnative-docker -DskipTests构建镜像，我放心Java 16被正确引导，然后镜像存在（为什么它是41岁，我不知道）。

[INFO]     [creator]     Paketo GraalVM Buildpack 6.4.2
[INFO]     [creator]       https://github.com/paketo-buildpacks/graalvm
[INFO]     [creator]       Build Configuration:
[INFO]     [creator]         $BP_JVM_VERSION            16.*           the Java version

$ docker images
REPOSITORY                  TAG              IMAGE ID       CREATED        SIZE
...
myapplication               0.0.1-SNAPSHOT   9bdb55e635ab   41 years ago   128MB

使用创建图像后，我使用 docker-compose up 启动数据库，然后启动应用程序（这是因为我之前通常使用 Dockerfile 构建图像并一起启动）和引发以下异常并且 Spring 启动应用程序将无法启动：

myapplication | Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'partyRepository' defined in com.myapplication.repository.MyFirstRepository defined in @EnableR2dbcRepositories declared on R2dbcRepositoriesAutoConfigureRegistrar.EnableR2dbcRepositoriesConfiguration: Invocation of init method failed; nested exception is com.oracle.svm.core.jdk.UnsupportedFeatureError: Unsupported method java.lang.Class.isSealed() is reachable: The declaring class of this element has been substituted, but this element is not present in the substitution class
myapplication |     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=18=](AbstractBeanFactory.java:335) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[na:na]
myapplication |     at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[na:na]
myapplication |     at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[na:na]
myapplication |     ... 19 common frames omitted
myapplication | Caused by: com.oracle.svm.core.jdk.UnsupportedFeatureError: Unsupported method java.lang.Class.isSealed() is reachable: The declaring class of this element has been substituted, but this element is not present in the substitution class

我假设 R2DBC 以某种方式使用 Class#isSealed，它在 Java 中处于启用预览模式 16. 如何使其成为运行?

Answer 1

对于这个问题，已报告一个错误 #3870 afterwards on the Oracle/Graal 项目可在 GraalVM 21.3 上重现。

问题正在等待解决。

Spring 引导 Docker Spring R2DBC 应用程序在 Java 16 上的本机映像在不受支持的方法上失败

Spring Boot Docker Native image of Spring R2DBC application on Java 16 fails on unsupported methdod

java

docker

spring-boot

graalvm

spring-native