Java / Spring exception thread "main" java.lang.NoClassDefFoundError: org/springframework/beans/factory/ListableBeanFactory

Question

我目前正在自学一门新语言：Java 和 Spring。

我已经成功地为 pom.xml

中的项目创建了父项和依赖项

<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>tech.benjaminpradon</groupId>
  <artifactId>springboot</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>benjaminpradon</name>


 <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-parent -->
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.3.RELEASE</version>
</parent>


<dependencies>
    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>


<!-- Version -->
<properties>
    <java.version>1.8</java.version>
</properties>
</project>

我还创建了 Spring 应用程序运行程序：

 package springboot;

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

@SpringBootApplication
public class LearningJava {

    public static void main(String[] args) {
        SpringApplication.run(LearningJava.class, args);

    }

}

但是，当我尝试运行它时，出现错误：

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/beans/factory/ListableBeanFactory
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.access0(Unknown Source)
    at java.net.URLClassLoader.run(Unknown Source)
    at java.net.URLClassLoader.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at springboot.LearningJava.main(LearningJava.java:10)
Caused by: java.lang.ClassNotFoundException: org.springframework.beans.factory.ListableBeanFactory
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 13 more

我想我需要创建一个 ResourcesController (RestController)。所以，我创建了一个：

package springboot.hello;

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

@RestController
public class HelloController {

@RequestMapping("/hello")
    public String Hi() {
        return "Hi";
    }
}

但是，这并没有改变什么。

我是新手，非常需要帮助。谢谢

Answer 1

正如@mallikarjun 提到的，我应该

delete .m2 folder and re-run again or updated dependencies again

Java / Spring exception thread "main" java.lang.NoClassDefFoundError: org/springframework/beans/factory/ListableBeanFactory

Java / Spring exception thread "main" java.lang.NoClassDefFoundError: org/springframework/beans/factory/ListableBeanFactory

java

spring

multithreading

main