问题：
带有Java11抛出的SpringBoot多模块项目无法访问类org。springframework。cglib。果心反思
孔星宇
我正在创建一个Java11SpringBoot（2.1.3版本）多模块项目，但在运行子模块时出现以下异常。当我把它作为一个项目（没有多个模块）运行时，一切都很好。
java.lang.IllegalStateException: Cannot load configuration class: f
etch.App
at spring.context@5.1.5.RELEASE/org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:413) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.context@5.1.5.RELEASE/org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:253) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.context@5.1.5.RELEASE/org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:286) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.context@5.1.5.RELEASE/org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:130) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.context@5.1.5.RELEASE/org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:705) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.context@5.1.5.RELEASE/org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.boot@2.1.3.RELEASE/org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[spring-boot-2.1.3.RELEASE.jar:na]
at spring.boot@2.1.3.RELEASE/org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.1.3.RELEASE.jar:na]
at spring.boot@2.1.3.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[spring-boot-2.1.3.RELEASE.jar:na]
at spring.boot@2.1.3.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) ~[spring-boot-2.1.3.RELEASE.jar:na]
at spring.boot@2.1.3.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) ~[spring-boot-2.1.3.RELEASE.jar:na]
at legalAppFetchModule/fetch.App.main(App.java:16) ~[classes/:na]
Caused by: java.lang.IllegalStateException: Unable to load cache item
at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:79) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:134) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:319) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.java:569) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.proxy.Enhancer.createClass(Enhancer.java:416) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at spring.context@5.1.5.RELEASE/org.springframework.context.annotation.ConfigurationClassEnhancer.createClass(ConfigurationClassEnhancer.java:137) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.context@5.1.5.RELEASE/org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:109) ~[spring-context-5.1.5.RELEASE.jar:na]
at spring.context@5.1.5.RELEASE/org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:402) ~[spring-context-5.1.5.RELEASE.jar:na]
... 11 common frames omitted
Caused by: java.lang.IllegalAccessError: class fetch.App$$EnhancerBySpringCGLIB$$4423c935 (in module legalAppFetchModule) cannot access class org.springframework.cglib.core.ReflectUtils (in unnamed module @0x50378a4) because module legalAppFetchModule does not read unnamed module @0x50378a4
at legalAppFetchModule/fetch.App$$EnhancerBySpringCGLIB$$4423c935.CGLIB$STATICHOOK1(<generated>) ~[classes/:na]
at legalAppFetchModule/fetch.App$$EnhancerBySpringCGLIB$$4423c935.<clinit>(<generated>) ~[classes/:na]
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:398) ~[na:na]
at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:537) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:363) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.proxy.Enhancer.generate(Enhancer.java:582) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:110) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:108) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]
... 19 common frames omitted
请查看家长pom。xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<!-- lookup parent from repository -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
<relativePath/>
</parent>
<groupId>com.example</groupId>
<artifactId>demoMultiModule</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demoMultiModule</name>
<description>Demo project for Spring Boot</description>
<packaging>pom</packaging>
<properties>
<java.version>11</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<modules>
<module>fetch</module>
</modules>
</project>
请看孩子pom.xml
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.example</groupId>
<artifactId>demoMultiModule</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>fetch</artifactId>
<name>fetch</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
我可以看到一个相关的Spring问题（https://github.com/spring-projects/spring-framework/issues/20414），所以问题（org.springframework.cglib.core.ReflectUtils1美元的非法反射访问）。根据他们的说法，它必须在spring5.1中修复，我正在使用Spring-web.5.1.5。因此，它不应该有任何问题。
module-info.java
open module legalAppFetchModule {
requires spring.boot.autoconfigure;
requires spring.boot;
requires spring.web;
}
谁能给我点光吗
共有2个答案
梁学真
在将SpringCore和SpringBean添加到模块路径之后，它不再抱怨服务器仍然没有完全运行，但我认为这可能是由于其他原因，我必须进一步研究。但就发布的问题而言，它已经解决了
干旺
添加Spring。芯和Spring。将bean添加到您的模块依赖项（您已经这样做了）。
另外，将其添加到应用程序运行配置的arguments选项卡的VM arguments中：
--add-modules=ALL-SYSTEM
您还可以将其设置为“窗口”下的默认选项
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