一、前期配置
（1）pom.xml
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring.security.version}</version>
</dependency>
（2）web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-security.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<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>
注意：这里的 springSecurityFilterChain 是固定的，不能修改
二、Spring Security 测试
spring-security.xml：
<?xml version="1.0" encoding="UTF-8"?>
<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.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd">
<security:http auto-config="true" use-expressions="false">
<!-- intercept-url定义一个过滤规则 pattern表示对哪些url进行权限控制，
access属性表示在请求对应的URL时需要什么权限，
默认配置时它应该是一个以逗号分隔的角色列表，请求的用户只需拥有其中的一个角色就能成功访问对应
的URL -->
<security:intercept-url pattern="/**" access="ROLE_USER"/>
<!-- auto-config配置后，不需要在配置下面信息 <security:form-login /> 定义登录表单信息
<security:http-basic
/> <security:logout /> -->
</security:http>
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="user" password="{noop}user" authorities="ROLE_USER"/>
<security:user name="admin" password="{noop}admin" authorities="ROLE_ADMIN"/>
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
</beans>
此时启动服务器会自动跳转到登录验证界面：
只有输入 user-user ,才能正确跳转到 index 的默认界面
因为这里设置了所有角色要想访问必须有一个 ROLE_USER 的角色
比如这里使用 admin-admin 登录会提示403错误：403 权限不足的错误
三、案例：自定义页面（XML配置用户信息）
<?xml version="1.0" encoding="UTF-8"?>
<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.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd">
<!-- 配置不过滤的资源（静态资源及登录相关）也就是这两个界面不做权限控制 -->
<security:http security="none" pattern="/login.html" />
<security:http security="none" pattern="/failer.html" />
<security:http auto-config="true" use-expressions="false" >
<!-- 配置资料连接，表示任意路径都需要ROLE_USER权限 -->
<security:intercept-url pattern="/**" access="ROLE_USER" />
<!-- 自定义登陆页面，login-page 自定义登陆页面 authentication-failure-url 用户权限校验失败之后才会跳转到这个页面，如果数据库中没有这个用户则不会跳转到这个页面。
default-target-url 登陆成功后跳转的页面。 注：登陆页面用户名固定 username，密码 password，action:login -->
<security:form-login login-page="/login.html"
login-processing-url="/login" username-parameter="username"
password-parameter="password" authentication-failure-url="/failer.html"
default-target-url="/success.html"
/>
<!-- 关闭CSRF,默认是开启的 -->
<security:csrf disabled="true" />
</security:http>
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="user" password="{noop}user"
authorities="ROLE_USER" />
<security:user name="admin" password="{noop}admin"
authorities="ROLE_ADMIN" />
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
</beans>
此时登录成功和失败就会跳转到自己指定的页面中：
