6、 Shiro中的自定义Realm

   

pom.xml

 <dependency>

       <groupId>org.apache.shiro</groupId>

       <artifactId>shiro-core</artifactId>

       <version>1.3.2</version>

   </dependency>

   

   <dependency>

       <groupId>commons-logging</groupId>

       <artifactId>commons-logging</artifactId>

       <version>1.2</version>

   </dependency> 

   

   <dependency>

       <groupId>log4j</groupId>

       <artifactId>log4j</artifactId>

       <version>1.2.17</version>

   </dependency>

   

   <dependency> 

       <groupId>org.slf4j</groupId>

       <artifactId>slf4j-log4j12</artifactId>

       <version>1.7.5</version>

   </dependency>

    

   <dependency>

       <groupId>com.mchange</groupId>

       <artifactId>c3p0</artifactId>

       <version>0.9.5.2</version>

   </dependency>

   

   <dependency>

       <groupId>mysql</groupId>

       <artifactId>mysql-connector-java</artifactId>

       <version>5.1.31</version>

   </dependency>

 配置信息

 shiro.ini

[main]

userRealm=com.lhy.realm.UserRealm

securityManager.realm=$userRealm

 

log4j.properties

log4j.rootLogger=info,stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%d%p[%c]-%m%n

 

%p:输出日志信息优先级，即DEBUG，INFO，WARN，ERROR，FATAL,
%d: 输出日志时间点的日期或时间，默认格式为ISO8601，也可以在其后指定格式，比如：%d{yyyy-MM-dd
HH:mm:ss,SSS}，输出类似：2011-10-1822:10:28,921
%r: 输出自应用启动到输出该log信息耗费的毫秒数
%c: 输出日志信息所属的类目，通常就是所在类的全名
%t: 输出产生该日志事件的线程名
%l: 输出日志事件的发生位置，相当于%C.%M(%F:%L)的组合,包括类目名、发生的线程，以及在代码中的行数。
%x: 输出和当前线程相关联的NDC(嵌套诊断环境),尤其用到像java
servlets这样的多客户多线程的应用中。
%%: 输出一个"%"字符
%F: 输出日志消息产生时所在的文件名称
%L: 输出代码中的行号
%m: 输出代码中指定的消息,产生的日志具体信息
%n: 输出一个回车换行符，Windows平台为"\r\n"，Unix平台为"\n"输出日志信息换行.

userRealm的具体实现代码

 package
cn.com.bochy.realm;

import java.util.ArrayList;

import java.util.List;

import org.apache.shiro.authc.AuthenticationException;

import org.apache.shiro.authc.AuthenticationInfo;

import org.apache.shiro.authc.AuthenticationToken;

import org.apache.shiro.authc.SimpleAuthenticationInfo;

import org.apache.shiro.authc.UnknownAccountException;

import org.apache.shiro.authz.AuthorizationInfo;

import org.apache.shiro.authz.SimpleAuthorizationInfo;

import org.apache.shiro.realm.AuthorizingRealm;

import org.apache.shiro.subject.PrincipalCollection;

publicclass
UserRealmextends AuthorizingRealm{

   //realm接口的方法

   @Override

   public
String getName() {

       return"userRealm";

   }  

   //完成身份认证并返回认证信息

   //如果身份认证失败，返回null

   @Override

   protected
AuthenticationInfodoGetAuthenticationInfo(

           AuthenticationToken token)throwsAuthenticationException
{

       //获取用户输入的用户名

       String username =(String)token.getPrincipal();//获取身份信息

       System.out.println("username----"+username);

       //拿数据和数据库中的查询，假设数据库中的名字为admin

       String dbUserName="admin";

           if(username==dbUserName){

              System.out.println("用户名正确");

           }else{

              thrownewUnknownAccountException("用户名错误！");

           }

       //实际开发是调用service根据用户名去数据库查对应的密码

       //假设获取的密码是1111

       String password ="123456";

       //Object principal, Object credentials, String realmName

       SimpleAuthenticationInfo info =newSimpleAuthenticationInfo(dbUserName,password,getName());

       return
info;

   }

   //授权的信息

   @Override

   protected
AuthorizationInfodoGetAuthorizationInfo(PrincipalCollection principals) {

       //主的身份信息

       String username = principals.getPrimaryPrincipal().toString();

       System.out.println("==========授权验证===========");

       System.out.println("username
---"+username);

       //根据用户名到数据库查询当前用户对应的权限信息   ---这里模拟

       List<String> permissions =newArrayList<String>();

       permissions.add("user:add");

       permissions.add("user:delete");

       permissions.add("user:update");

       permissions.add("user:find");

       /*

        *实现了AuthorizationInfo接口info，内部存的是权限和角色

        */

       SimpleAuthorizationInfo info =newSimpleAuthorizationInfo();

       //给当前用户分配权限

       info.addStringPermissions(permissions);

       return
info;

   }

}

 

测试代码

 package
cn.com.bochy.realm.test;

import org.apache.shiro.SecurityUtils;

import org.apache.shiro.authc.IncorrectCredentialsException;

import org.apache.shiro.authc.UnknownAccountException;

import org.apache.shiro.authc.UsernamePasswordToken;

import org.apache.shiro.config.IniSecurityManagerFactory;

import org.apache.shiro.subject.Subject;

import org.apache.shiro.util.Factory;

publicclass
UserRealmTest {

   publicstaticvoid
main(String[] args) {

       //1,创建SecurityManager工厂 读取shiro配置文件

       Factory<org.apache.shiro.mgt.SecurityManager> factory =newIniSecurityManagerFactory("classpath:shiro.ini");

       //2 通过securityManager工厂获取SecurityManager实例

       org.apache.shiro.mgt.SecurityManagersecurityManager = factory.getInstance();

       //3将SecurityManager对象设置到运行环境

       SecurityUtils.setSecurityManager(securityManager);

       //4通过SecurityUtils获取主体subject

       Subject subject = SecurityUtils.getSubject();

       try
{

           //5.假设登录名是zhangsan 密码是1111

           UsernamePasswordToken token =newUsernamePasswordToken("admin","123456");

           //6，登录，进行用户身验证

           subject.login(token);

           //通过subject判断用户是否通过验证

           if(subject.isAuthenticated()){

               System.out.println("用户登录成功！");

           }

       }catch(UnknownAccountException
e) {    

          // System.out.println("用户名错误！");

           e.printStackTrace();

       }catch(IncorrectCredentialsException
e) {

           System.out.println("密码错误！");

           e.printStackTrace();

       } 

       System.out.println(subject.isPermitted("user:add"));

       System.out.println(subject.isPermittedAll("user:delete"));

       System.out.println(subject.isPermittedAll("user:update"));

       System.out.println(subject.isPermittedAll("user:query"));

       System.out.println(subject.isPermittedAll("user:find"));

      //"user:delete","user:update","user:query"));

       //7退出

       subject.logout();     

   }

}

 

测试结果

 2017-07-0507:08:51,483 INFO [org.apache.shiro.config.IniSecurityManagerFactory]
- Realmshave been explicitly set on the SecurityManager instance - auto-setting ofrealms will not occur.

username----admin

用户名正确

2017-07-05 07:08:51,498INFO [org.apache.shiro.session.mgt.AbstractValidatingSessionManager] - Enablingsession validation scheduler...

用户登录成功！

==========授权验证===========

username ---admin

true

==========授权验证===========

username ---admin

true

==========授权验证===========

username ---admin

true

==========授权验证===========

username ---admin

false

==========授权验证===========

username ---admin

true