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首页 > 解决方案 > Java 16 上 Spring R2DBC 应用程序的 Spring Boot Docker 本机映像在不受支持的方法上失败

java - Java 16 上 Spring R2DBC 应用程序的 Spring Boot Docker 本机映像在不受支持的方法上失败

问题描述

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

我使用org.springframework.experimental:spring-native版本0.10.3来启用 Spring Native 并使用以下插件进行构建：

<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 构建映像./mvnw.cmd spring-boot:build-image -Pnative-docker -DskipTests，我确信 Java 16 已正确引导，然后映像存在（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（这与我之前正常使用Dockerfile并一起启动的图像一样工作）并引发以下异常并且 Spring Boot 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$0(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#isSealedJava 16 中的启用预览模式。如何让它运行？

标签： javaspring-bootdockergraalvmspring-native

解决方案

对于这个问题，后来在GraalVM 21.3 上可重现的Oracle/Graal项目中报告了一个错误#3870 。

问题正在等待解决。

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