无法使用Java 10和Spring解析持久性单元根URL

Question

我正在使用Java 9和spring。我正在运行简单的MySQL数据库，但是每次尝试运行我的应用程序时，都会出现此错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: Unable to resolve persistence unit root URL
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1745) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.context@5.1.4.RELEASE/org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083) ~[spring-context-5.1.4.RELEASE.jar:na]
    at spring.context@5.1.4.RELEASE/org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:853) ~[spring-context-5.1.4.RELEASE.jar:na]
    at spring.context@5.1.4.RELEASE/org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.4.RELEASE.jar:na]
    at spring.boot@2.1.2.RELEASE/org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.2.RELEASE.jar:na]
    at spring.boot@2.1.2.RELEASE/org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.2.RELEASE.jar:na]
    at spring.boot@2.1.2.RELEASE/org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.2.RELEASE.jar:na]
    at spring.boot@2.1.2.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.2.RELEASE.jar:na]
    at spring.boot@2.1.2.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.2.RELEASE.jar:na]
    at spring.boot@2.1.2.RELEASE/org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.2.RELEASE.jar:na]
    at org.server.main/org.apj.server.ServerApplication.main(ServerApplication.java:14) [classes/:na]
Caused by: javax.persistence.PersistenceException: Unable to resolve persistence unit root URL
    at spring.orm@5.1.4.RELEASE/org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.determineDefaultPersistenceUnitRootUrl(DefaultPersistenceUnitManager.java:640) ~[spring-orm-5.1.4.RELEASE.jar:na]
    at spring.orm@5.1.4.RELEASE/org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.preparePersistenceUnitInfos(DefaultPersistenceUnitManager.java:462) ~[spring-orm-5.1.4.RELEASE.jar:na]
    at spring.orm@5.1.4.RELEASE/org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.afterPropertiesSet(DefaultPersistenceUnitManager.java:443) ~[spring-orm-5.1.4.RELEASE.jar:na]
    at spring.orm@5.1.4.RELEASE/org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:328) ~[spring-orm-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.1.4.RELEASE.jar:na]
    at spring.beans@5.1.4.RELEASE/org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) ~[spring-beans-5.1.4.RELEASE.jar:na]
    ... 16 common frames omitted
Caused by: java.io.FileNotFoundException: class path resource [] cannot be resolved to URL because it does not exist
    at spring.core@5.1.4.RELEASE/org.springframework.core.io.ClassPathResource.getURL(ClassPathResource.java:195) ~[spring-core-5.1.4.RELEASE.jar:na]
    at spring.orm@5.1.4.RELEASE/org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.determineDefaultPersistenceUnitRootUrl(DefaultPersistenceUnitManager.java:636) ~[spring-orm-5.1.4.RELEASE.jar:na]
    ... 21 common frames omitted

我的模块文件如下：

open module org.server.main {
    requires java.sql;
    requires org.hibernate.validator;
    requires spring.beans;
    requires spring.boot;
    requires spring.boot.autoconfigure;
    requires spring.context;
    requires spring.core;
    requires spring.data.commons;
    requires spring.data.jpa;
    requires spring.web;
    requires spring.jdbc;
    requires spring.webmvc;
    requires java.persistence;
}

我的application.properties文件如下所示：

spring.datasource.url=jdbc:mysql://localhost:3306/mydb?useSSL=false
spring.datasource.username=root
spring.datasource.password=mypassword
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.ddl-auto = validate

这是我的模块的构建gradle文件：

buildscript {
    ext {
        springBootVersion = '2.1.2.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}


plugins {
    id 'java'
}

apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

group 'APJ'
version '1.0-SNAPSHOT'

sourceCompatibility = 10

repositories {
    mavenCentral()
}

ext.springBootVersion = '2.1.2.RELEASE'


dependencies {
    compile project (":client")
    compile 'mysql:mysql-connector-java'
    compile 'org.springframework.boot:spring-boot-starter-data-jpa'
    compile 'org.springframework.boot:spring-boot-starter-web'
    compile group: 'org.springframework', name: 'spring-jdbc', version: '3.1.0.RELEASE'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    testCompile group: 'junit', name: 'junit', version: '4.12'
}

ext.moduleName = 'org.server.main'

这是我的项目build.gradle：

subprojects {
    afterEvaluate {
        repositories {
            jcenter()
        }

        compileJava {
            doFirst {
                options.compilerArgs = [
                        '--module-path', classpath.asPath,
                ]
                classpath = files()
            }
        }

        compileTestJava {
            inputs.property("moduleName", moduleName)
            doFirst {
                options.compilerArgs = [
                        '--module-path', classpath.asPath,
                        '--add-modules', 'junit',
                        '--add-reads', "$moduleName=junit",
                        '--patch-module', "$moduleName=" + files(sourceSets.test.java.srcDirs).asPath,
                ]
                classpath = files()
            }
        }

        test {
            inputs.property("moduleName", moduleName)
            doFirst {
                jvmArgs = [
                        '--module-path', classpath.asPath,
                        '--add-modules', 'ALL-MODULE-PATH',
                        '--add-reads', "$moduleName=junit",
                        '--patch-module', "$moduleName=" + files(sourceSets.test.java.outputDir).asPath,
                ]
                classpath = files()
            }
        }
    }
}

有人可以帮我吗？我为此一直苦苦挣扎很长时间，无法提出解决方案。

非常感谢您。