这个应用程序有什么问题。我认为类路径罐和模块罐的混合是有效的。对于所有没有显式模块的jars来说-信息变成了一个自动模块?当我删除我的模块-info.java时,它可以工作。因为这个案子使用类路径的想法。
Java(TM) SE运行时环境(build 9+176)
IntelliJ IDEA 2017.1.4
module-info.java
module test {
requires spring.boot.autoconfigure;
requires spring.boot;
}App.java
package com.foo.test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}pom.xml
<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>
<groupId>com.foo.test</groupId>
<artifactId>test</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.M2</version>
</parent>
<name>test</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.9</maven.compiler.source>
<maven.compiler.target>1.9</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/libs-milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>线程"main“中的异常:无法实例化接口org.springframework.context.ApplicationContextInitializer : org.springframework.boot.context.ConfigurationWarningsApplicationContextInitializer at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:439) at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:418) at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:418).SpringApplication.getSpringFactoriesInstances(SpringApplication.java:409) at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.(SpringApplication.java:266) at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.(SpringApplication.java:247) at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) at test/com.foo.test.App.main(App.java:10),由:java.lang.NoClassDefFoundError: java/sql/SQLException at spring.beans@5.0.0.RC2/org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:145) at spring.boot@2.0.0.M2/org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:435引起).7多个原因是: java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582):java.sql.SQLException at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496) .9
发布于 2017-07-05 11:33:56
我认为spring.boot是一个自动模块。自动模块不声明依赖项,因此您必须使用--add-modules来确保所需的任何显式模块都得到了解决。如果spring.boot是一个显式模块,那么我假设它会是requires java.sql,您将不会遇到这个问题。
发布于 2017-07-05 08:47:14
最后,我拿到了.我的模块信息必须是这样的:
module test {
requires java.sql; // my real problem solved with this
requires spring.boot.autoconfigure;
requires spring.boot;
exports com.foo.test; // subsequent error 1: beeing accessible for some spring modules
opens com.foo.test to spring.core; // subsequent error 2: beeing accessible for spring.core in a deep reflection way
}当我不使用java.sql时,有人能解释为什么我需要在我自己的模块中要求它吗?
发布于 2020-09-01 11:43:01
从Java 8升级到Java 11时,我也遇到了同样的问题。
通过在Intellij运行配置中选择不同的选项解决了问题:

https://stackoverflow.com/questions/44910768
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