问 Spring Boot应用程序无法初始化类org.apache.logging.log4j.util.PropertiesUtil

EN

我正在尝试使用spring boot、gradle和tomcat来实现hello world web应用程序，方法是遵循 "Building a RESTful Web Service" ，但到目前为止还无法运行。

代码与网站上提供的代码几乎相同，我花了几个小时调试它，以为提供的代码中有一个bug，但我仍然找不出哪里出了问题。

我正在为Web开发人员使用Eclipse Java EE IDE，版本: Neon.3 Release (4.6.3)，Build : 20170314-1500

你知道问题出在哪里吗？

build.gradle

buildscript {
    repositories {
        mavenCentral()
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.0.2.RELEASE")
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
bootJar {
    baseName = 'gs-rest-service'
    version =  '0.1.0'
repositories {
    mavenCentral()
sourceCompatibility = 1.8
targetCompatibility = 1.8
dependencies {
    compile("org.springframework.boot:spring-boot-starter-web")
    testCompile('org.springframework.boot:spring-boot-starter-test')
}

Greeting.java

package App;
public class Greeting {
    private final long id;
    private final String content;
    public Greeting(long id, String content) {
        this.id = id;
        this.content = content;
    public long getId() {
        return id;
    public String getContent() {
        return content;
}

GreetingController.java

package App;
import java.util.concurrent.atomic.AtomicLong;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class GreetingController {
    private static final String template = "Hello, %s!";
    private final AtomicLong counter = new AtomicLong();
    @RequestMapping("/greeting")
    public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {
        return new Greeting(counter.incrementAndGet(),
                            String.format(template, name));
}

Application.java

package App;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        System.getProperties().put("server.port", 8486);
        SpringApplication.run(Application.class, args);
}

堆栈跟踪

Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.apache.logging.log4j.util.PropertiesUtil
    at org.apache.logging.log4j.status.StatusLogger.<clinit>(StatusLogger.java:71)
    at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:60)
    at org.apache.commons.logging.LogFactory$Log4jLog.<clinit>(LogFactory.java:199)
    at org.apache.commons.logging.LogFactory$Log4jDelegate.createLog(LogFactory.java:166)