我是Web服务和Spring的新手,我正在尝试使用Spring Maven创建Web服务,但我不知道运行Application.java时是什么原因导致了此错误
Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/context/ApplicationEvent
at hello.Application.main(Application.java:11)
Caused by: java.lang.ClassNotFoundException: org.springframework.context.ApplicationEvent
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
这是我的Application.java
package hello;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
这是我的pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.rest</groupId>
<artifactId>restwebservice</artifactId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
</project>
2条答案
按热度按时间vql8enpb1#
我认为您只是缺少了Spring上下文依赖关系。
请尝试将以下内容添加到您的pom中:
mcdcgff02#
我也遇到了同样的问题。在本地Maven存储库
(${user.home}/.m2/)
中已经下载的jars
和Spring Boot
正在下载的新jars
之间似乎有一些冲突。要解决此问题,请执行以下操作:
1.我将旧的存储库重命名为repository.X,并重新创建了一个名为repository的新空目录。
mvn update
更新-即在Eclipse IDE中执行以下操作:Maven -〉更新项目What does Maven Update Project do in Eclipse?mvn clean install
.