spring security

1 添加security标签库

2 添加servlet filter

<filter>
<filter-name>springSecurityFilterChain</filter-name>//spring security会创建一个id为springSecurityFilterChain的filter bean
<filter-class>
org.springframework.web.filter.DelegatingFilterProxy//所有对此class的调用会委托给相应的filter
</filter-class>
</filter>

3 构建filter

<http auto-config="true">//自动创建filterbean
<intercept-urlpattern="/**"access="ROLE_SPITTER"/ requires-channel="https"/>//针对所有url，and restrict access to only authenticated users who have the ROLE_SPITTER role，可有多个此标签, requires-channel="https"可以将所有请求转换为https

<form-login login-processing-url="/static/j_spring_security_check"
login-page="/login"
authentication-failure-url="/login?login_error=t"/>//创建登陆页面filter，http://localhost:
8080/Spitter/spring_security_login.

<logout logout-url="/static/j_spring_security_logout"/>
</http>

Spring Security 在jsp中的标签

<security:accesscontrollist>这个标签纸在使用Spring Security ACL 模块时才可以使用。它检测一个用逗号分隔的特
定领域对象的需要权限列表。如果当前用户拥有这些权限的任何一个，标签内容就会被执行。
否则，就会被略过。

    <sec:accesscontrollist hasPermission="1,2" domainObject="${someObject}">  
        This will be shown if the user has either of the permissions  
        represented by the values "1" or "2" on the given object.  
    </sec:accesscontrollist>  

<security:authentication> 这个标签允许访问当前的Authentication 对象， 保存在安全上下文中。

<security:authorize> 这个标签用来决定它的内容是否会被显示

    <sec:authorize access="hasRole('supervisor')">  
        This content will only be visible to users who have  
        the "supervisor" authority in their list of GrantedAuthoritys.  
    </sec:authorize>  

用户验证

1 直接写在配置文件中

<user-serviceid="userService">
<user name="habuma"password="letmein"
authorities="ROLE_SPITTER,ROLE_ADMIN"/>
<user name="twoqubed"password="longhorns"
authorities="ROLE_SPITTER"/>
<user name="admin"password="admin"
authorities="ROLE_ADMIN"/>
</user-service>

<authentication-manager> //registers an authentication manager.
<authentication-provideruser-service-ref="userService"/>
</authentication-manager>

2. 从数据库中读取

<jdbc-user-serviceid="userService"
data-source-ref="dataSource"
users-by-username-query=
"select username,password,truefromspitterwhereusername=?"
authorities-by-username-query=
"select username,'ROLE_SPITTER'fromspitterwhereusername=?"/>
<authentication-manager>
<authentication-provideruser-service-ref="userService"/>
</authentication-manager>

remember me

保存一个token(由 用户名，密码，privatekey，过期时间经md5算法生成）在cookie中

<http auto-config="true"use-expressions="true">
...
<remember-me
key="spitterKey"
token-validity-seconds="2419200"/>//4个礼拜
</http>

Securing methods

<global-method-securitysecured-annotations="enabled"/> //启动注解

1 @Secured  ：

@Secured("ROLE_SPITTER") //创建一个pointcut，除非验证的用户的权限为ROLE_SPITTER

//@Secured({"ROLE_SPITTER","ROLE_ADMIN"}) 权限为其中一个
public voidaddSpittle(Spittle spittle){
// ...
} //如果权限不够，抛出Spring Security’s exceptions，如果是http请求，则被Spring Security’s filters捕获，否则要自己处理

2 pre-post-annotations

<global-method-security pre-post-annotations="enabled"/> 

@PreAuthorize("hasRole('ROLE_SPITTER')")
public voidaddSpittle(Spittlespittle){
// ...
}

其他资料：http://lengyun3566.iteye.com/category/153689