在SprnigBoot和Java 9中找不到org/slf4j/loggerFactory

Question

我创建了Maven项目，在其中我提到了Spring-boot-starter-web，在其中我已经获得了SLF4J-API-1.7.25.jar，并且我正在使用JDK9。但无法找到org/slf4j/loggerFactory

在org.apache.commons.logging.impl.slf4JLogFactory.getInstance(SLF4JLogFactory.java:155)在org.apache.commons.logging.impl.slf4JLogFactory.getInstance(SLF4JLogFactory.java:132)在org.apache.commons.logging.logfactory.getLog(logfactory.java:273)在9）由:java.lang.ClassNotFoundException:org.slf4j.loggerFactory在java.net.urlClassLoader.findClass(urlClassLoader.java:381)在java.lang.ClassLoader.loadClass(classLoader.java:424)在sun.misc.launcher$appClassLoader.loadClass(launcher.java:335)在java.lang.ClassLoader.loadClass(classLoader.java:357)在

源代码：

package com.javaqubes.app;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class HelloWorldSpringBootApp {
    public static void main(String[] args) {
        SpringApplication.run(HelloWorldSpringBootApp.class,args);
    }
}

控制器：

package com.javaqubes.app.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloWorldController {

    @RequestMapping(value = "/")
    public String hello() {
        return "Hello World ...... !!!!!";
    }
}

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.javaqubes.app</groupId>
    <artifactId>01-HelloWorldSpringBoot</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
    </properties>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.4.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>
    </dependencies>
</project>

Answer 1

Spring Boot1.5不支持Java9。您必须使用Spring Boot2或降级到Java8。另请参见以下文章:https://github.com/spring-projects/spring-boot/wiki/spring-boot-with-java-9