搭建spring项目，无法创建RequestMappingHandlerMapping异常

异常详情：

Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping': Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.web.servlet.handler.AbstractHandlerMapping.obtainApplicationContext()Lorg/springframework/context/ApplicationContext;

 

参考https://blog.csdn.net/u012527870/article/details/81843504，找到原因在于spring的jar包版本冲突

 

该项目里的spring依赖版本都是5.1.4

<!--参数管理-->
  <properties>
    <jdk.version>1.8</jdk.version>
    <spring.version>5.1.4.RELEASE</spring.version>
  </properties>

<!--依赖管理-->
  <dependencies>
    ……
    <!--spring-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>${spring.version}</version>
    </dependency>
    ……

    <!--activemq-->
    <dependency>
      <groupId>org.apache.activemq</groupId>
      <artifactId>activemq-all</artifactId>
      <version>5.15.8</version>
    </dependency>
</dependencies>

 

而该项目引入的另一个依赖(activemq-all)，本身又依赖了另一个版本的spring

<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/maven-v4_0_0.xsd">

  <groupId>org.apache.activemq</groupId>
  <artifactId>activemq-parent</artifactId>
  <version>5.15.8</version>
  <packaging>pom</packaging>
  <name>ActiveMQ</name>
  <inceptionYear>2005</inceptionYear>

  <!--这里的spring版本是4.3.18-->
  <spring-version>4.3.18.RELEASE</spring-version>

  ……

</project>

 

解决方案：

1. 将该项目依赖的spring版本改为4.3.18

2. 在该项目中引入activemq-all依赖时，排除掉spring