一般我们把密码存在数据库里都是采用加密的方式，确保了即使数据库泄漏，不法分子也无法登录帐号。常见的加密算法有MD5,SHA1等，本篇博客将给大家讲解如何在Shiro中使用MD5算法给密码加密。

POM

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

4.0.0

com.jk.shiroLearning

chapter4

1.0-SNAPSHOT

junit

junit

4.9

commons-logging

commons-logging

1.1.3

org.apache.shiro

shiro-core

1.2.2

mysql

mysql-connector-java

5.1.25

com.alibaba

druid

0.2.23

shiro-realm.ini

[main]

#自定义authorizer

authorizer=org.apache.shiro.authz.ModularRealmAuthorizer

securityManager.authorizer=$authorizer

#自定义realm 一定要放在securityManager.authorizer赋值之后(因为调用setRealms会将realms设置给authorizer，并给各个Realm设置permissionResolver和rolePermissionResolver)

realm=com.jk.realm.MyRealm

#配置加密匹配器

credentialsMatcher=org.apache.shiro.authc.credential.HashedCredentialsMatcher

#加密算法

credentialsMatcher.hashAlgorithmName=MD5

#加密次数

credentialsMatcher.hashIterations=1024

realm.credentialsMatcher=$credentialsMatcher

securityManager.realms=$realm

配置比以前多了加密匹配器的部分

自定义Realm

public class MyRealm extends AuthorizingRealm {

//授权,调用checkRole/checkPermission/hasRole/isPermitted都会执行该方法

@Override

protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {

SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();

//可通过不同principal赋予不同权限

if (principals.getPrimaryPrincipal().equals("jack")){

//授予角色role1

authorizationInfo.addRole("role1");

authorizationInfo.addRole("role2");

//授予对user任何行为任何实例的权限

authorizationInfo.addObjectPermission(new WildcardPermission("user:*"));

//等同于

//authorizationInfo.addStringPermission("user:*");

}

return authorizationInfo;

}

//认证

@Override

protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {

String username = (String)token.getPrincipal(); //得到用户名

//加密算法

String hashAlgorithName="MD5";

//加密明文

String credentials="123456";

//加密盐值

ByteSource salt = null;

//加密盐值

//盐值通常取唯一的，我们这用用户名作为盐值

//ByteSource salt= ByteSource.Util.bytes(username);

//加密次数

int hashIterations = 1024;

Object password = new SimpleHash(hashAlgorithName,credentials,salt,hashIterations);

return new SimpleAuthenticationInfo(username, password, getName());

}

}

在一般开发过程中我们不会直接用MD5加密，还要加上一个盐值，这个盐值一般是唯一的。

验证登录

public class UseMD5 {

public static void main(String[]args){

//1、获取SecurityManager工厂，此处使用Ini配置文件初始化SecurityManager

Factory factory =

new IniSecurityManagerFactory("classpath:shiro-realm.ini");

//2、得到SecurityManager实例 并绑定给SecurityUtils

org.apache.shiro.mgt.SecurityManager securityManager = factory.getInstance();

SecurityUtils.setSecurityManager(securityManager);

//3、得到Subject及创建用户名/密码身份验证Token(即用户身份/凭证)

Subject subject = SecurityUtils.getSubject();

//登录信息传密码明文

UsernamePasswordToken token = new UsernamePasswordToken("jack", "123456");

try {

//4、登录，即身份验证

subject.login(token);

//验证是否有user1的create权限

System.out.println(subject.isPermitted("user1:create:*"));

//验证是否有role1角色

System.out.println(subject.hasRole("role1"));

} catch (AuthenticationException e) {

//5、身份验证失败

e.printStackTrace();

}

//6、退出

subject.logout();

}

}

登录时我们传的是明文123456，校验时比较的是用MD5加盐用户名加密1024次后的值

开发中我们一般会采用数据库储存用户名，加密后密码还要盐值，，需要使用到JdbcRealm

首先执行sql语句创建数据库并插入数据

drop database if exists shiro;

create database shiro;

use shiro;

create table users (

id bigint auto_increment,

username varchar(100),

password varchar(100),

password_salt varchar(100),

constraint pk_users primary key(id)

) charset=utf8 ENGINE=InnoDB;

create unique index idx_users_username on users(username);

create table user_roles(

id bigint auto_increment,

username varchar(100),

role_name varchar(100),

constraint pk_user_roles primary key(id)

) charset=utf8 ENGINE=InnoDB;

create unique index idx_user_roles on user_roles(username, role_name);

create table roles_permissions(

id bigint auto_increment,

role_name varchar(100),

permission varchar(100),

constraint pk_roles_permissions primary key(id)

) charset=utf8 ENGINE=InnoDB;

create unique index idx_roles_permissions on roles_permissions(role_name, permission);

insert into users(username, password, password_salt) values('jack', 'fc1709d0a95a6be30bc5926fdb7f22f4', 'jack');

insert into user_roles(username, role_name) values('jack', 'role1');

insert into user_roles(username, role_name) values('jack', 'role2');

insert into roles_permissions(role_name, permission) values('role1', 'user1:*');

insert into roles_permissions(role_name, permission) values('role1', 'user2:*');

insert into roles_permissions(role_name, permission) values('role2', 'user3:*');

shiro-jdbc.ini

[main]

authorizer=org.apache.shiro.authz.ModularRealmAuthorizer

securityManager.authorizer=$authorizer

#自定义realm 一定要放在securityManager.authorizer赋值之后(因为调用setRealms会将realms设置给authorizer，并给各个Realm设置permissionResolver和rolePermissionResolver)

jdbcRealm=org.apache.shiro.realm.jdbc.JdbcRealm

dataSource=com.alibaba.druid.pool.DruidDataSource

dataSource.driverClassName=com.mysql.jdbc.Driver

dataSource.url=jdbc:mysql://localhost:3306/shiro

dataSource.username=root

dataSource.password=root

jdbcRealm.dataSource=$dataSource

jdbcRealm.permissionsLookupEnabled=true

#配置加密匹配器

credentialsMatcher=org.apache.shiro.authc.credential.HashedCredentialsMatcher

#加密算法

credentialsMatcher.hashAlgorithmName=MD5

#加密次数

credentialsMatcher.hashIterations=1024

jdbcRealm.credentialsMatcher=$credentialsMatcher

securityManager.realms=$jdbcRealm

这个也是比之前的多了配置加密匹配器

校验登录

public class UseJdbcMD5 {

public static void main(String[]args){

//1、获取SecurityManager工厂，此处使用Ini配置文件初始化SecurityManager

Factory factory =

new IniSecurityManagerFactory("classpath:shiro-jdbc.ini");

//2、得到SecurityManager实例 并绑定给SecurityUtils

SecurityManager securityManager = factory.getInstance();

SecurityUtils.setSecurityManager(securityManager);

//3、得到Subject及创建用户名/密码身份验证Token(即用户身份/凭证)

Subject subject = SecurityUtils.getSubject();

//登录信息传密码明文

UsernamePasswordToken token = new UsernamePasswordToken("jack", "123456");

try {

//4、登录，即身份验证

subject.login(token);

//验证是否有user1的create权限

System.out.println(subject.isPermitted("user1:create:*"));

//验证是否有role1角色

System.out.println(subject.hasRole("role1"));

} catch (AuthenticationException e) {

//5、身份验证失败

e.printStackTrace();

}

//6、退出

subject.logout();

}

}