shiro进行登录认证和权限管理的实现。其中需求涉及使用两个角色分别是:门店,公司。现在要两者实现分开登录。即需要两个Realm——MyShiroRealmSHOP和MyShiroRealmCOMPANY,分别处理门店,公司的验证功能。

但是正常情况下,当定义了多个Realm,无论是门店登录还是公司登录,都会由这两个Realm共同处理。这是因为,当配置了多个Realm时,我们通常使用的认证器是shiro自带的org.apache.shiro.authc.pam.ModularRealmAuthenticator,其中决定使用的Realm的是doAuthenticate()方法,源代码如下:

protected AuthenticationInfo doAuthenticate(AuthenticationToken authenticationToken) throws AuthenticationException {
assertRealmsConfigured();
Collection<Realm> realms = getRealms();
if (realms.size() == 1) {
return doSingleRealmAuthentication(realms.iterator().next(), authenticationToken);
} else {
return doMultiRealmAuthentication(realms, authenticationToken);
}
}

  

上述代码的意思就是如果有多个Realm就会使用所有配置的Realm。 只有一个的时候,就直接使用当前的Realm。

为了实现需求,我会创建一个org.apache.shiro.authc.pam.ModularRealmAuthenticator的子类,并重写doAuthenticate()方法,让特定的Realm完成特定的功能。如何区分呢?我会同时创建一个org.apache.shiro.authc.UsernamePasswordToken的子类,在其中添加一个字段VirtualType,用来标识登录的类型,即是门店登录还是公司登录。具体步骤如下:

public enum VirtualType {
COMPANY, // 公司
SHOP // 门店
}

  接下来新建org.apache.shiro.authc.UsernamePasswordToken的子类UserToken

import org.apache.shiro.authc.UsernamePasswordToken;

public class UserToken extends UsernamePasswordToken {
private VirtualType virtualType; public UserToken(final String username, final String password, VirtualType virtualType) {
super(username, password);
this.virtualType = virtualType;
} public VirtualType getVirtualType() {
return virtualType;
} public void setVirtualType(VirtualType virtualType) {
this.virtualType = virtualType;
}
}

  新建org.apache.shiro.authc.pam.ModularRealmAuthenticator的子类UserModularRealmAuthenticator:

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.pam.ModularRealmAuthenticator;
import org.apache.shiro.realm.Realm; public class UserModularRealmAuthenticator extends ModularRealmAuthenticator { private static final Logger logger = LoggerFactory.getLogger(UserModularRealmAuthenticator.class); @Override
protected AuthenticationInfo doAuthenticate(AuthenticationToken authenticationToken)
throws AuthenticationException {
logger.info("UserModularRealmAuthenticator:method doAuthenticate() execute ");
// 判断getRealms()是否返回为空
assertRealmsConfigured();
// 强制转换回自定义的CustomizedToken
UserToken userToken = (UserToken) authenticationToken;
// 登录类型
VirtualType virtualType = userToken.getVirtualType();
// 所有Realm
Collection<Realm> realms = getRealms();
// 登录类型对应的所有Realm
Collection<Realm> typeRealms = new ArrayList<>();
for (Realm realm : realms) {
if (realm.getName().contains(virtualType.toString()))  // 注:这里使用类名包含枚举,区分realm
typeRealms.add(realm);
}
// 判断是单Realm还是多Realm
if (typeRealms.size() == 1) {
logger.info("doSingleRealmAuthentication() execute ");
return doSingleRealmAuthentication(typeRealms.iterator().next(), userToken);
} else {
logger.info("doMultiRealmAuthentication() execute ");
return doMultiRealmAuthentication(typeRealms, userToken);
}
}
}

  创建分别处理门店登录还是公司登录的Realm:

import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired; import java.util.HashSet;
import java.util.Set; /**公司登陆realm
*/
public class MyShiroRealmCOMPANY extends AuthorizingRealm { @Autowired
IUserService userService; @Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
String username = (String) principals.getPrimaryPrincipal(); // 一定是String类型,在SimpleAuthenticationInfo
SystemUser systemUser = userService.getUserByName(username, VirtualType.COMPANY);
if (systemUser == null) {
throw new RuntimeException("system concurrent exception: COMPANY user not found:username=" + username);
} SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo(); Set<String> stringPermissions = new HashSet<>(256);
     // 字符串资源
authorizationInfo.addStringPermissions(stringPermissions);
return authorizationInfo;
} @Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
// UsernamePasswordToken token = (UsernamePasswordToken) authenticationToken;
UserToken token = (UserToken)authenticationToken;
// 逻辑登陆
return new SimpleAuthenticationInfo(token.getPrincipal(), token.getCredentials(), getName());
}
}

  

import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired; import java.util.HashSet;
import java.util.Set; /**门店登陆realm
*/
public class MyShiroRealmSHOP extends AuthorizingRealm { @Autowired
IUserService userService; @Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
String username = (String) principals.getPrimaryPrincipal(); // 一定是String类型,在SimpleAuthenticationInfo
SystemUser systemUser = userService.getUserByName(username, VirtualType.SHOP);
if (systemUser == null) {
throw new RuntimeException("system concurrent exception: SHOP user not found:username=" + username);
} SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo(); Set<String> stringPermissions = new HashSet<>(256);
     // 字符串资源
authorizationInfo.addStringPermissions(stringPermissions);
return authorizationInfo;
} @Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
// UsernamePasswordToken token = (UsernamePasswordToken) authenticationToken;
UserToken token = (UserToken)authenticationToken;
// 逻辑登陆
return new SimpleAuthenticationInfo(token.getPrincipal(), token.getCredentials(), getName());
}
}

  ShiroConfig配置

    @Bean("securityManager")
public SecurityManager securityManager(RedisTemplate redisTemplate) {          // redisTemplate配置的redis缓存,可忽略
DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
List<Realm> realms = new ArrayList<>();
//添加多个Realm
realms.add(myShiroRealmSHOP(redisTemplate));
realms.add(myShiroRealmCOMPANY(redisTemplate));
securityManager.setAuthenticator(modularRealmAuthenticator()); // 需要再realm定义之前
securityManager.setRealms(realms);
securityManager.setSessionManager(myShiroSession(redisTemplate));
return securityManager;
} /**
* 系统自带的Realm管理,主要针对多realm 认证
*/
@Bean
public ModularRealmAuthenticator modularRealmAuthenticator() {
//自己重写的ModularRealmAuthenticator
UserModularRealmAuthenticator modularRealmAuthenticator = new UserModularRealmAuthenticator();
modularRealmAuthenticator.setAuthenticationStrategy(new AtLeastOneSuccessfulStrategy());
return modularRealmAuthenticator;
} @Bean("myShiroRealmSHOP")
public MyShiroRealmSHOP myShiroRealmSHOP(RedisTemplate redisTemplate) {
return new MyShiroRealmSHOP();
} @Bean("myShiroRealmCOMPANY")
public MyShiroRealmCOMPANY myShiroRealmCOMPANY(RedisTemplate redisTemplate) {
return new MyShiroRealmCOMPANY();
}

  登陆即可:

subject.login(new UserToken(username, password, virtualType))  

这里需要注意的是,上述配置的Authenticator主要针对登陆认证,对于授权时没有控制的,使用资源注入时会发现,使用的是myShiroRealmSHOP的doGetAuthorizationInfo方法(上面SHOP的定义在前),没有走对应的realm的授权,产生问题错乱;

新建org.apache.shiro.authz.ModularRealmAuthorizer子类:

import org.apache.shiro.authz.Authorizer;
import org.apache.shiro.authz.ModularRealmAuthorizer;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.subject.PrincipalCollection;
public class UserModularRealmAuthorizer extends ModularRealmAuthorizer {
@Override
public boolean isPermitted(PrincipalCollection principals, String permission) {
assertRealmsConfigured();
for (Realm realm : getRealms()) {
if (!(realm instanceof Authorizer)){ continue;}
// todo 授权配置
if (realm.getName().contains(VirtualType.COMPANY.toString())) {    // 判断realm
if (permission.contains("company")) {    // 判断是否改realm的资源
return ((MyShiroRealmCOMPANY) realm).isPermitted(principals, permission); // 使用改realm的授权方法
}
}
if (realm.getName().contains(VirtualType.SHOP.toString())) {
if (permission.contains("shop")) {
return ((MyShiroRealmSHOP) realm).isPermitted(principals, permission);
}
}
}
return false;
}
}

  然后在ShiroConfig更改:

    @Bean("securityManager")
public SecurityManager securityManager(RedisTemplate redisTemplate) {
DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
// 使用注解,@RequiresPermissions,读取缓存权限信息保存key对象为:{@link org.apache.shiro.subject.SimplePrincipalCollection},所以redis缓存配置的String不能转换
// securityManager.setCacheManager(redisCacheManager(redisTemplate));
List<Realm> realms = new ArrayList<>();
//添加多个Realm
realms.add(myShiroRealmSHOP(redisTemplate));
realms.add(myShiroRealmCOMPANY(redisTemplate));
securityManager.setAuthenticator(modularRealmAuthenticator());
securityManager.setAuthorizer(modularRealmAuthorizer());    // 这里
securityManager.setRealms(realms);
securityManager.setSessionManager(myShiroSession(redisTemplate));
return securityManager;
} /**
* 系统自带的Realm管理,主要针对多realm 认证
*/
@Bean
public ModularRealmAuthenticator modularRealmAuthenticator() {
//自己重写的ModularRealmAuthenticator
UserModularRealmAuthenticator modularRealmAuthenticator = new UserModularRealmAuthenticator();
modularRealmAuthenticator.setAuthenticationStrategy(new AtLeastOneSuccessfulStrategy());
return modularRealmAuthenticator;
} /**
* 系统自带的Realm管理,主要针对多realm 授权
*/
@Bean
public ModularRealmAuthorizer modularRealmAuthorizer() {
//自己重写的ModularRealmAuthorizer
UserModularRealmAuthorizer modularRealmAuthorizer = new UserModularRealmAuthorizer();
return modularRealmAuthorizer;
} @Bean("myShiroRealmSHOP")
public MyShiroRealmSHOP myShiroRealmSHOP(RedisTemplate redisTemplate) {
return new MyShiroRealmSHOP();
} @Bean("myShiroRealmCOMPANY")
public MyShiroRealmCOMPANY myShiroRealmCOMPANY(RedisTemplate redisTemplate) {
return new MyShiroRealmCOMPANY();
}

  

参考:https://blog.csdn.net/cckevincyh/article/details/79629022

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