shiro的介紹
shiro是apache提供的強大而靈活的開源安全框架，它主要用來處理身份認證，授權，企業會話管理和加密。靈活性強，易學易擴展
1、環境配置maven
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-web</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-ehcache</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.8.8</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.8</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>Spring配置
<!-- 配置進行授權和認證的 Realm -->
<bean id="myRealm"
class="com.yonyou.nccloud.gwm.shrio.realm.MyRealm"></bean>
<!-- 配置 Shiro 的 SecurityManager Bean. -->
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="cacheManager" ref="shcacheManager"/>
<!-- <property name="rememberMeManager" ref="rememberMeManager" /> -->
<property name="realm" ref="myRealm"/>
</bean>
<!-- 配置 Bean 後置處理器: 會自動的調用和 Spring 整合後各個組件的生命週期方法. -->
<bean id="lifecycleBeanPostProcessor"
class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/>
<!-- 配置 ShiroFilter bean: 該 bean 的 id 必須和 web.xml 文件中配置的 shiro filter 的 name 一致 -->
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
<!-- 裝配 securityManager -->
<property name="securityManager" ref="securityManager"/>
<!-- 配置登陸頁面 -->
<property name="loginUrl" value="/mygwapp/login"/>
<!-- 登陸成功後的一面 -->
<!-- <property name="successUrl" value="/AdminIndexController/index.htm"/> -->
<!-- <property name="unauthorizedUrl" value="/404.jsp"/> -->
<!-- 具體配置需要攔截哪些 URL, 以及訪問對應的 URL 時使用 Shiro 的什麼 Filter 進行攔截. -->
<property name="filterChainDefinitions">
<value>
<!-- 配置登出: 使用 logout 過濾器 /**=anon-->
/**=authc
/mygwapp/logout=logout
</value>
</property>
</bean>
SpringMvc.xml
<bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" depends-on="lifecycleBeanPostProcessor">
<property name="proxyTargetClass" value="true" />
</bean>
<bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">
<property name="securityManager" ref="securityManager"/>
</bean>
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
<prop key="org.apache.shiro.authz.UnauthorizedException">
/403
</prop>
<prop key="org.apache.shiro.authz.UnauthenticatedException">
/403
</prop>
</props>
</property>
</bean>
web.xml
<filter>
<filter-name>shiroFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
<init-param>
<param-name>targetFilterLifecycle</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>shiroFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>到此環境已OK 不懂得地方 自行百度
首先說
2、認證操作
在登錄的controller中，登錄成功後
Subject subject=SecurityUtils.getSubject();
UsernamePasswordToken token=new UsernamePasswordToken(username, password);
subject.login(token);
執行subject.login後會調用myRealm類中的方法doGetAuthenticationInfo
MyRealm
public class MyRealm extends AuthorizingRealm {
@Autowired
private ITenantAuthrityService tenantAuthrityService;
/**
*
* 實現思路： 1）
* 授權方法: 1. 實際返回的是 SimpleAuthorizationInfo 類的實例 2. 可以調用
* SimpleAuthorizationInfo 的 addRole 來添加當前登錄 user 的權限信息. 3. 可以調用
* PrincipalCollection 參數的 getPrimaryPrincipal() 方法來獲取用戶信息
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(
PrincipalCollection principalCollection) {
SimpleAuthorizationInfo simpleAuthorizationInfo = new SimpleAuthorizationInfo();
List<String> permissions = new ArrayList<String>();
String username = (String) principalCollection
.getPrimaryPrincipal();
List<String> mms= tenantAuthrityService.getMyPermissions(username);
permissions.addAll(mms);
permissions.add("/main/test1");
permissions.add("/main/test");
simpleAuthorizationInfo.addStringPermissions(permissions);
return simpleAuthorizationInfo;
}
/**
*
* Subject currentUser = SecurityUtils.getSubject();
* UsernamePasswordToken token = new UsernamePasswordToken(username,
* password); currentUser.login(token); 3. 當 Subject 調用 login 方法時, 即會觸發當前的
* doGetAuthenticationInfo 方法x
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(
AuthenticationToken token) throws AuthenticationException {
String username = (String) token.getPrincipal();
String source = generateSalt();
ByteSource credentialsSalt = new Md5Hash(source);
SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(
username,new String("abcd").toCharArray(),
credentialsSalt, getName());
return info;
}
private String generateSalt() {
SecureRandomNumberGenerator secureRandom = new SecureRandomNumberGenerator();
String hex = secureRandom.nextBytes(3).toHex(); // 一個Byte佔兩個字節，此處生成的3字節，字符串長度爲6
return hex;
}
@PostConstruct
public void setCredentialMatcher() {
setCredentialsMatcher(new SimpleCredentialsMatcher());
}
//重寫權限判斷方法，加入正則判斷
@Override
public boolean isPermitted(PrincipalCollection principals, String permission) {
AuthorizationInfo info = getAuthorizationInfo(principals);
Collection<String> permissions = info.getStringPermissions();
return permissions.contains(permission) || patternMatch(permissions, permission);
}
/**
* 正則
* @param patternUrlList
* @param requestUri
* @return
*/
public boolean patternMatch(Collection<String> patternUrlList, String requestUri) {
boolean flag = false;
for (String patternUri : patternUrlList) {
if (StringUtils.isNotEmpty(patternUri)) {
System.out.println(requestUri+"========"+patternUri);
Pattern pattern = Pattern.compile(patternUri);
Matcher matcher = pattern.matcher(requestUri);
if (matcher.matches()) {
flag = true;
break;
}
}
}
return flag;
}
}
我們在doGetAuthenticationInfo方法中去
SimpleAuthenticationInfo中放入賬號及密碼
在shrio內部會比較 SimpleAuthenticationInfo對象與之前subject 的UsernamePasswordToken 的賬號密碼進行比對
如果一致則認證成功
3、授權操作
當我們在controller的方法上添加@RequiresPermissions(value={"/main/test1"})
這時就會進行授權操作 調用MyRealm的doGetAuthorizationInfo方法
在該方法中將可以訪問的路徑存放在simpleAuthorizationInfo中，返回它的對象
然後調用isPermitted方法
在該方法中我們對註解上的value和info中的權限集合 進行正則匹配
如果匹配成功，則返回true，不成功返回false，
授權完畢
4、銷燬認證信息
Subject subject=SecurityUtils.getSubject();
if(subject.isAuthenticated()){
//將session註銷
subject.logout();
}