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

我正在尝试使用Spring Boot编写一个简单的RESTful服务。 但是，有一个错误消息，我无法解决。 我一直在研究，它看起来像是SpringBoot版本之间的冲突，但我不知道如何摆脱它。

我有这个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：

 <?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> 

看起来不错，但我得到这个错误：

 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 

Answer 1

推荐方法

1. 转到Spring引导Initialzr站点，并selectWeb堆栈作为依赖项，如下所示 。
2. 由于Spring Boot使用Opinionated依赖关系和Bill of Materials的概念，它会自动拉动其他依赖关系并解决您的classNotFoundException问题。 在你的情况下，它错过了Spring-core-4.2.4.RELEASE.jar依赖。

3. 执行Maven目标作为干净的安装spring-boot：运行-e ，你可以在你的IDE中find你的Maven依赖关系，下面给出的是一个POM示例文件。

     <?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> 

Answer 2

春季开机正在运行 –

 <spring.version>4.3.2.RELEASE</spring.version> 

对于 –

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

当你正在导入 –

  <springframework.version>4.3.0.RELEASE</springframework.version> 

你可以确认在主POM –

https://github.com/spring-projects/spring-boot/blob/v1.4.0.RELEASE/spring-boot-dependencies/pom.xml

你能更新你的pom的spring版吗？ 或者处理pipe理Maven依赖关系