java.lang.NoClassDefFoundError: org/springframework/core/env/ConfigurableEnvironment [英] java.lang.NoClassDefFoundError: org/springframework/core/env/ConfigurableEnvironment

问题描述

我正在尝试使用 Spring Boot 编写一个简单的 RESTful 服务.但是，有一条我无法解决的错误消息.我一直在研究，看起来它是 SpringBoot 版本之间的冲突，但是我不确定如何摆脱它.

I am trying to write a simple RESTful service using Spring Boot. However, there is an error message I am not able to solve. I have been researching and it looks like it is a conflict between SpringBoot versions, however I am not sure about how can I get rid of it.

我有这个 SpringBootApp:

I have this SpringBootApp:

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

/**
 * REST Service application
 */
@SpringBootApplication
public class Application {

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

与这个 pom.xml 相关联:

Associated with this pom.xml:

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.websystique.springmvc</groupId>
    <artifactId>Spring4MVCHelloWorldRestServiceDemo</artifactId>
    <packaging>war</packaging>
    <version>1.0.0</version>
    <name>Spring4MVCHelloWorldRestServiceDemo Maven Webapp</name>

    <properties>
        <springframework.version>4.3.0.RELEASE</springframework.version>
        <jackson.library>2.7.5</jackson.library>
        <spring.batch.version>2.1.9.RELEASE</spring.batch.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>1.4.0.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${springframework.version}</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version> <!-- Or whatever JUnit you're using. -->
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.library}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.dataformat</groupId>
            <artifactId>jackson-dataformat-xml</artifactId>
            <version>${jackson.library}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.batch</groupId>
            <artifactId>spring-batch-core</artifactId>
            <version>${spring.batch.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-beans</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-core</artifactId>
                </exclusion>
            </exclusions>
        </dependency>


    </dependencies>


    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.2</version>
                    <configuration>
                        <source>1.7</source>
                        <target>1.7</target>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>2.4</version>
                    <configuration>
                        <warSourceDirectory>src/main/webapp</warSourceDirectory>
                        <warName>Spring4MVCHelloWorldRestServiceDemo</warName>
                        <failOnMissingWebXml>false</failOnMissingWebXml>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>

        <finalName>Spring4MVCHelloWorldRestServiceDemo</finalName>
    </build>
</project>

对我来说看起来不错，但我收到此错误:

Looks fine for me, but I am getting this error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/core/env/ConfigurableEnvironment
    at com.application.Application.main(Application.java:13)
Caused by: java.lang.ClassNotFoundException: org.springframework.core.env.ConfigurableEnvironment
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 1 more

推荐答案

推荐方法

1. 转到 .
2. 由于 Spring Boot 使用了Opinionated 依赖项和物料清单的概念，它会自动拉取其他依赖项并解决您的 classNotFoundException 问题.在您的情况下，它错过了 Spring-core-4.2.4.RELEASE.jar 依赖项.

3. 以 clean install spring-boot:run -e 的方式执行 Maven 目标，您可以在 IDE 中找到您的 Maven 依赖项，下面给出了一个示例 POM 文件.

1. Go to .
2. As Spring Boot uses the concept of Opinionated dependencies and Bill of Materials, It will automatically pull the other dependencies and resolve your classNotFoundException issue. And in your case it misses out the Spring-core-4.2.4.RELEASE.jar dependency.

3. Execute the Maven Goal as clean install spring-boot:run -e and you can find your maven dependencies in your IDE and below given is a sample POM file.

  <?xml version="1.0" encoding="UTF-8"?>
 <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.example</groupId>
  <artifactId>demo</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <packaging>war</packaging>

     <name>demo</name>
    <description>Demo project for Spring Boot</description>

     <parent>
       <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
     <version>1.4.0.RELEASE</version>
     <relativePath/> <!-- lookup parent from repository -->
   </parent>

    <properties>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
       <project.reporting.outputEncoding>UTF-       8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    </properties>

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

     <dependency>
          <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
             <scope>provided</scope>
      </dependency>
    <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
     </dependency>
     <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
      < /dependency>
    </dependencies>

  <build>
    <finalName>demo</finalName>
       <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
    </build>

这篇关于java.lang.NoClassDefFoundError: org/springframework/core/env/ConfigurableEnvironment的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！