spring：爲什麼我會得到ClassNotFoundException：org.springframework.expression.ExpressionParser？

Question

類org.springframework.expression.ExpressionParser在包含的spring-expression中，如下所示。 所以初始化Spring上下文時，爲什麼我收到這個錯誤：

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/expression/ExpressionParser 
at org.springframework.context.support.AbstractApplicationContext.prepareBeanFactory(AbstractApplicationContext.java:556) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:457) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) 
at com.cgi.tapestry.dbtest.JdbcTest.main(JdbcTest.java:22) 
Caused by: java.lang.ClassNotFoundException: org.springframework.expression.ExpressionParser 

我的pom.xml：

<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.cgi.test.tr</groupId> 
<artifactId>DBTest</artifactId> 
<version>0.1</version> 
<dependencies> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-core</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-expression</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-beans</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-aop</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-context</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-context-support</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-tx</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-jdbc</artifactId> 
     <version>4.0.4.RELEASE</version> 
    </dependency> 
</dependencies> 
<build> 
    <sourceDirectory>src</sourceDirectory> 
    <plugins> 
     <plugin> 
      <artifactId>maven-compiler-plugin</artifactId> 
      <version>3.1</version> 
      <configuration> 
       <source>1.7</source> 
       <target>1.7</target> 
      </configuration> 
     </plugin> 
    </plugins> 
</build> 

Answer 1

我想我的Maven的回購不知何故亂了。 我發現我已經在組織兩個「春天的」目錄：

springframework 
springexpression 

我擦出來，它解決了這個問題。而且，只有彈簧框架得到了再生。