解決org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springframework.org/schema/security]的方法

在pom.xml中匯入Spring Security的依賴即可

<!-- Spring Security -->
	<dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-web</artifactId> 
    </dependency> 
    <dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-config</artifactId> 
    </dependency>