java.lang.NoClassDefFoundError:org/springframework/core/env/ConfigurableEnvironment

Recommended Approach

1. 转到Spring boot Initialzr站点，然后选择Web stack作为依赖项，如下所示数字。
2. 由于Spring Boot使用Opinionified依赖项和BOM表的概念，它将自动提取其他依赖项并解决classNotFoundException问题。在您的情况下，它会错过Spring-core-4.2.4.RELEASE.jar依赖项。
3. 以干净安装spring-boot：run-e的身份执行Maven目标，您可以在IDE中找到您的Maven依赖关系，下面给出了一个示例POM文件。

          <?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>