目前Spring官方只提供Maven的下载方式。但在http://maven.springframework.org中有SpringSecurity及其他所有Spring产品的下载方式。

http://maven.springframework.org/release/org/springframework/中有Spring相关的所有下载，但好像直到3.2版的，最新的版本在这个里面找不到

http://maven.springframework.org/release/org/springframework/security/spring-security/3.2.0.RELEASE/这个是SpringSecurity3.2的下载地址

Maven下载地址：

<dependencies>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-web</artifactId>
        <version>3.2.0.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
        <version>3.2.0.RELEASE</version>
    </dependency>
</dependencies>

本教程是基于SpringMVC3.2+Hibernate4+JPA2.0+SpringSecurity3.2的环境。SpringMVC3.2+Hibernate4+JPA2.0环境的搭建在这里就不多说了，主要讲下SpringSecurity的环境搭建

web.xml配置

<!-- 加载Spring的配置文件 -->
<context-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>
		classpath:applicationContext.xml,
		classpath:applicationContext-security.xml
	</param-value>
</context-param>

<!-- SpringSecurity 核心过滤器配置 -->
<filter> 
	<filter-name>springSecurityFilterChain</filter-name>  
	<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>  
</filter>
<filter-mapping>
	<filter-name>springSecurityFilterChain</filter-name>
	<url-pattern>/*</url-pattern>  
</filter-mapping>

applicationContext-security.xml命名空间配置，官方提供了两种配置方案

第一种、命名空间用beans开头，但是在配置中一直需要用security:*来配置。

<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:security="http://www.springframework.org/schema/security"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
          http://www.springframework.org/schema/security
          http://www.springframework.org/schema/security/spring-security.xsd">
    ...
</beans>

第二种、命名空间用security开头，在配置中不需要security前缀，但是bean的配置需要用beans:bean配置。

<beans:beans xmlns="http://www.springframework.org/schema/security"
  xmlns:beans="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
           http://www.springframework.org/schema/security
           http://www.springframework.org/schema/security/spring-security.xsd">
    ...
</beans:beans>

到此为止SpringSecurity的环境配置已基本完成

命名空间的配置可在spring的官方文档，第4章 Security Namespace Configuration 中找到，一下附上链接地址

http://docs.spring.io/spring-security/site/docs/3.2.0.RELEASE/reference/htmlsingle/#ns-config