SpringBoot中未发现类定义错误

ercv8c1e  于 2023-03-02  发布在  Spring
关注(0)|答案(1)|浏览(272)

我试图从互联网上运行该项目，这里是一个错误，我得到了：

  1. 2023-02-28 20:14:28.225 ERROR 13204 --- [           main] o.s.boot.SpringApplication               : Application run failed
  3. java.lang.NoClassDefFoundError: org/springframework/core/NativeDetector
  4.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.<init>(AbstractAutowireCapableBeanFactory.java:180) ~[spring-beans-5.3.14.jar:5.3.14]
  5.     at org.springframework.beans.factory.support.DefaultListableBeanFactory.<init>(DefaultListableBeanFactory.java:193) ~[spring-beans-5.3.14.jar:5.3.14]
  6.     at org.springframework.context.support.GenericApplicationContext.<init>(GenericApplicationContext.java:113) ~[spring-context-5.3.2.jar:5.3.2]
  7.     at org.springframework.web.context.support.GenericWebApplicationContext.<init>(GenericWebApplicationContext.java:81) ~[spring-web-5.3.2.jar:5.3.2]
  8.     at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.<init>(ServletWebServerApplicationContext.java:118) ~[spring-boot-2.4.1.jar:2.4.1]
  9.     at org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext.<init>(AnnotationConfigServletWebServerApplicationContext.java:72) ~[spring-boot-2.4.1.jar:2.4.1]
  10.     at org.springframework.boot.ApplicationContextFactory.lambda$static$0(ApplicationContextFactory.java:48) ~[spring-boot-2.4.1.jar:2.4.1]
  11.     at org.springframework.boot.SpringApplication.createApplicationContext(SpringApplication.java:597) ~[spring-boot-2.4.1.jar:2.4.1]
  12.     at org.springframework.boot.SpringApplication.run(SpringApplication.java:323) ~[spring-boot-2.4.1.jar:2.4.1]
  13.     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-2.4.1.jar:2.4.1]
  14.     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-2.4.1.jar:2.4.1]
  15.     at com.isolutions4u.onlineshopping.OnlineShoppingApplication.main(OnlineShoppingApplication.java:11) ~[classes/:na]
  16. Caused by: java.lang.ClassNotFoundException: org.springframework.core.NativeDetector
  17.     at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]
  18.     at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
  19.     at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
  20.     ... 12 common frames omitted
  22. Process finished with exit code 1

这里是我的pom.xml文件：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  3.     <modelVersion>4.0.0</modelVersion>
  4.     <parent>
  5.         <groupId>org.springframework.boot</groupId>
  6.         <artifactId>spring-boot-starter-parent</artifactId>
  7.         <version>2.4.1</version>
  8.         <relativePath /> <!-- lookup parent from repository -->
  9.     </parent>
  10.     <groupId>com.isolutions4u</groupId>
  11.     <artifactId>online-shopping</artifactId>
  12.     <version>0.0.2-SNAPSHOT</version>
  13.     <packaging>war</packaging>
  15.     <name>online-shopping</name>
  16.     <description>Demo project for Spring Boot</description>
  18.     <properties>
  19.         <java.version>1.8</java.version>
  20.     </properties>
  22.     <dependencies>
  23.         <dependency>
  24.             <groupId>org.springframework.boot</groupId>
  25.             <artifactId>spring-boot-starter-data-jpa</artifactId>
  26.         </dependency>
  27.         <dependency>
  28.             <groupId>org.springframework.boot</groupId>
  29.             <artifactId>spring-boot-starter-security</artifactId>
  30.         </dependency>
  31.         <dependency>
  32.             <groupId>org.springframework.boot</groupId>
  33.             <artifactId>spring-boot-starter-web</artifactId>
  34.         </dependency>
  35.         <dependency>
  36.             <groupId>mysql</groupId>
  37.             <artifactId>mysql-connector-java</artifactId>
  38.             <scope>runtime</scope>
  39.         </dependency>
  40.         <dependency>
  41.             <groupId>org.hibernate</groupId>
  42.             <artifactId>hibernate-validator</artifactId>
  43.             <version>5.3.6.Final</version>
  44.         </dependency>
  45.         <dependency>
  46.             <groupId>org.springframework.boot</groupId>
  47.             <artifactId>spring-boot-starter-test</artifactId>
  48.             <scope>test</scope>
  49.         </dependency>
  50.         <dependency>
  51.             <groupId>org.springframework.security</groupId>
  52.             <artifactId>spring-security-test</artifactId>
  53.             <scope>test</scope>
  54.         </dependency>
  56.         <dependency>
  57.             <groupId>org.springframework.boot</groupId>
  58.             <artifactId>spring-boot-starter-tomcat</artifactId>
  59.             <scope>provided</scope>
  60.         </dependency>
  62.         <dependency>
  63.             <groupId>org.apache.tomcat.embed</groupId>
  64.             <artifactId>tomcat-embed-jasper</artifactId>
  65.             <scope>provided</scope>
  66.         </dependency>
  67.         <dependency>
  68.             <groupId>javax.servlet</groupId>
  69.             <artifactId>jstl</artifactId>
  70.         </dependency>
  71.         <dependency>
  72.             <groupId>javax.validation</groupId>
  73.             <artifactId>validation-api</artifactId>
  74.         </dependency>
  76.         <dependency>
  77.             <groupId>org.hibernate</groupId>
  78.             <artifactId>hibernate-validator</artifactId>
  79.             <version>5.0.3.Final</version>
  80.         </dependency>
  81.         <dependency>
  82.             <groupId>log4j</groupId>
  83.             <artifactId>log4j</artifactId>
  84.             <version>1.2.17</version>
  85.         </dependency>
  86.         <dependency>
  87.             <groupId>org.springframework.webflow</groupId>
  88.             <artifactId>spring-webflow</artifactId>
  89.             <version>2.5.1.RELEASE</version>
  90.         </dependency>
  91.         <dependency>
  92.             <groupId>org.springframework.security</groupId>
  93.             <artifactId>spring-security-taglibs</artifactId>
  94.         </dependency>
  95.         <dependency>
  96.             <groupId>org.springframework</groupId>
  97.             <artifactId>spring-beans</artifactId>
  98.             <version>5.3.14</version>
  99.         </dependency>
  101.     </dependencies>
  102.     <build>
  103.         <plugins>
  104.             <plugin>
  105.                 <groupId>org.springframework.boot</groupId>
  106.                 <artifactId>spring-boot-maven-plugin</artifactId>
  107.                 <configuration>
  108.                     <excludes>
  109.                         <exclude>
  110.                             <groupId>org.projectlombok</groupId>
  111.                             <artifactId>lombok</artifactId>
  112.                         </exclude>
  113.                     </excludes>
  114.                 </configuration>
  115.             </plugin>
  116.             <plugin>
  117.                 <groupId>org.apache.maven.plugins</groupId>
  118.                 <artifactId>maven-release-plugin</artifactId>
  119.                 <configuration>
  120.                     <goals>install</goals>
  121.                     <autoVersionSubmodules>true</autoVersionSubmodules>
  122.                 </configuration>
  123.             </plugin>
  124.         </plugins>
  125.     </build>
  127. </project>

我已经尝试更改依赖项中的某些内容，但没有帮助
我只想知道为什么还没开始

spring-boot

1条答案

按热度按时间
fae0ux8s

fae0ux8s1#

此错误消息表明Java虚拟机（JVM）无法找到类"NativeDetector"，该类是Spring框架核心库的一部分。
以下是您可以尝试解决此问题的一些方法：
1.请确保类路径中包含所需版本的Spring Framework库，您可以通过查看项目构建配置文件中列出的依赖项（例如，Maven的pom.xml，Gradle的build.gradle）来检查这一点。
1.检查环境中的类路径设置是否正确。这可以通过打印"CLASSPATH"环境变量的值来完成。还可以通过运行以下命令来检查JVM使用的类路径：
java-verbose：类您的.应用程序. MainClass
这将打印出JVM加载的所有类。
1.请检查Spring Framework JAR文件是否损坏。尝试再次下载JAR文件并替换旧文件。
1.检查是否为项目使用了正确版本的Spring Framework库。某些版本的Spring Framework可能依赖于其他库，或者需要特定版本的Java。
如果您使用的是Eclipse或IntelliJ之类的IDE，请尝试清理并重新构建项目。这将确保所有必需的文件都包含在类路径中。
我希望这些建议能帮助您解决NoClassDefFoundError。如果问题仍然存在，请提供有关项目设置的详细信息，以及您为解决此问题所采取的步骤。

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