已解决异常：java.lang.NoClassDefFoundError: org/springframework/util/ClassUtils

搭建SSJ项目结构时遇到了一个异常，记录一下（排了好久）

java.lang.NoClassDefFoundError: org/springframework/util/ClassUtils

    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.(SpringJUnit4ClassRunner.java:99)  
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)  
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)  
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)  
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)  
    at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:29)  
    at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:21)  
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)  
    at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)  
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)  
    at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:26)  
    at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:31)  
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:49)  
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)  
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)  
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)  
Caused by: java.lang.ClassNotFoundException: org.springframework.util.ClassUtils  
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)  
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)  
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)  
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)  
    ... 16 more  
Process finished with exit code -1

pom.xml文件如下：

<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>4.0.0modelVersion>

  <groupId>cn.ruigroupId>
  <artifactId>ssj_ruiartifactId>
  <version>1.0-SNAPSHOTversion>
  <packaging>warpackaging>

  <name>ssj_rui Maven Webappname>
  
  <url>http://www.example.comurl>

  <properties>
    <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    <maven.compiler.source>1.8maven.compiler.source>
    <maven.compiler.target>1.8maven.compiler.target>
  properties>

  <dependencies>
    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>4.11version>
      <scope>testscope>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webartifactId>
      <version>5.1.1.RELEASEversion>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>4.2.5.RELEASEversion>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-ormartifactId>
      <version>4.2.5.RELEASEversion>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-testartifactId>
      <version>4.2.5.RELEASEversion>
    dependency>
    <dependency>
      <groupId>org.hibernategroupId>
      <artifactId>hibernate-coreartifactId>
      <version>4.3.8.Finalversion>
    dependency>
    <dependency>
      <groupId>org.hibernategroupId>
      <artifactId>hibernate-entitymanagerartifactId>
      <version>4.3.8.Finalversion>
    dependency>
    <dependency>
      <groupId>mysqlgroupId>
      <artifactId>mysql-connector-javaartifactId>
      <version>5.1.6version>
    dependency>
    <dependency>
      <groupId>commons-dbcpgroupId>
      <artifactId>commons-dbcpartifactId>
      <version>1.2.2version>
    dependency>
    <dependency>
      <groupId>org.aspectjgroupId>
      <artifactId>aspectjweaverartifactId>
      <version>1.8.9version>
    dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.coregroupId>
      <artifactId>jackson-databindartifactId>
      <version>2.5.0version>
    dependency>
  dependencies>

  <build>
    <finalName>ssj_ruifinalName>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-clean-pluginartifactId>
          <version>3.0.0version>
        plugin>
        
        <plugin>
          <artifactId>maven-resources-pluginartifactId>
          <version>3.0.2version>
        plugin>
        <plugin>
          <artifactId>maven-compiler-pluginartifactId>
          <version>3.7.0version>
        plugin>
        <plugin>
          <artifactId>maven-surefire-pluginartifactId>
          <version>2.20.1version>
        plugin>
        <plugin>
          <artifactId>maven-war-pluginartifactId>
          <version>3.2.0version>
        plugin>
        <plugin>
          <artifactId>maven-install-pluginartifactId>
          <version>2.5.2version>
        plugin>
        <plugin>
          <artifactId>maven-deploy-pluginartifactId>
          <version>2.8.2version>
        plugin>
      plugins>
    pluginManagement>
  build>
project>

问题原因：导jar包时，导入的jar包版本不兼容导致，

org.springframework spring-web 5.1.1.RELEASE

解决办法：

我将spring-web包的版本换为了4.2.5.RELEASE，就解决了这个问题。

org.springframework spring-web 4.2.5.RELEASE