一般我們把密碼存在數(shù)據(jù)庫里都是采用加密的方式，確保了即使數(shù)據(jù)庫泄漏，不法分子也無法登錄帳號。常見的加密算法有MD5,SHA1等，本篇博客將給大家講解如何在Shiro中使用MD5算法給密碼加密。

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]

#自定義authorizer

authorizer=org.apache.shiro.authz.ModularRealmAuthorizer

securityManager.authorizer=$authorizer

#自定義realm 一定要放在securityManager.authorizer賦值之后(因為調用setRealms會將realms設置給authorizer，并給各個Realm設置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

#加密次數(shù)

credentialsMatcher.hashIterations=1024

realm.credentialsMatcher=$credentialsMatcher

securityManager.realms=$realm

配置比以前多了加密匹配器的部分

自定義Realm

public class MyRealm extends AuthorizingRealm {

//授權,調用checkRole/checkPermission/hasRole/isPermitted都會執(zhí)行該方法

@Override

protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {

SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();

//可通過不同principal賦予不同權限

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

//授予角色role1

authorizationInfo.addRole("role1");

authorizationInfo.addRole("role2");

//授予對user任何行為任何實例的權限

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

//等同于

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

}

return authorizationInfo;

}

//認證

@Override

protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {

String username = (String)token.getPrincipal(); //得到用戶名

//加密算法

String hashAlgorithName="MD5";

//加密明文

String credentials="123456";

//加密鹽值

ByteSource salt = null;

//加密鹽值

//鹽值通常取唯一的，我們這用用戶名作為鹽值

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

//加密次數(shù)

int hashIterations = 1024;

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

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

}

}

在一般開發(fā)過程中我們不會直接用MD5加密，還要加上一個鹽值，這個鹽值一般是唯一的。

驗證登錄

public class UseMD5 {

public static void main(String[]args){

//1、獲取SecurityManager工廠，此處使用Ini配置文件初始化SecurityManager

Factory factory =

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

//2、得到SecurityManager實例 并綁定給SecurityUtils

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

SecurityUtils.setSecurityManager(securityManager);

//3、得到Subject及創(chuàng)建用戶名/密碼身份驗證Token(即用戶身份/憑證)

Subject subject = SecurityUtils.getSubject();

//登錄信息傳密碼明文

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

try {

//4、登錄，即身份驗證

subject.login(token);

//驗證是否有user1的create權限

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

//驗證是否有role1角色

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

} catch (AuthenticationException e) {

//5、身份驗證失敗

e.printStackTrace();

}

//6、退出

subject.logout();

}

}

登錄時我們傳的是明文123456，校驗時比較的是用MD5加鹽用戶名加密1024次后的值

開發(fā)中我們一般會采用數(shù)據(jù)庫儲存用戶名，加密后密碼還要鹽值，，需要使用到JdbcRealm

首先執(zhí)行sql語句創(chuàng)建數(shù)據(jù)庫并插入數(shù)據(jù)

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

#自定義realm 一定要放在securityManager.authorizer賦值之后(因為調用setRealms會將realms設置給authorizer，并給各個Realm設置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

#加密次數(shù)

credentialsMatcher.hashIterations=1024

jdbcRealm.credentialsMatcher=$credentialsMatcher

securityManager.realms=$jdbcRealm

這個也是比之前的多了配置加密匹配器

校驗登錄

public class UseJdbcMD5 {

public static void main(String[]args){

//1、獲取SecurityManager工廠，此處使用Ini配置文件初始化SecurityManager

Factory factory =

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

//2、得到SecurityManager實例 并綁定給SecurityUtils

SecurityManager securityManager = factory.getInstance();

SecurityUtils.setSecurityManager(securityManager);

//3、得到Subject及創(chuàng)建用戶名/密碼身份驗證Token(即用戶身份/憑證)

Subject subject = SecurityUtils.getSubject();

//登錄信息傳密碼明文

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

try {

//4、登錄，即身份驗證

subject.login(token);

//驗證是否有user1的create權限

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

//驗證是否有role1角色

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

} catch (AuthenticationException e) {

//5、身份驗證失敗

e.printStackTrace();

}

//6、退出

subject.logout();

}

}

總結

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