- * 项目环境搭建
- * 配置ShiroConfig,用于shiro的基本配置和注入自定义规则
- * 实现自定义的realm,继承AuthorizingRealm
- * 编写测试controller和页面
- 基本环境准备
- 导入依赖坐标
- maven管理、shiro1.4.0 和spring-shiro1.4.0依赖
- 导入数据源,配置thymeleaf,redis,等等
- shiro配置
- 配置shiroConfig
- 编写自定义的realm
- 实现具体的doGetAuthorizationInfo(授权)方法和doGetAuthenticationInfo(认证)
具体实现:
shiroConfig配置
@Bean(name = "securityManager")
public DefaultWebSecurityManager securityManager(@Qualifier("myRealm") MyRealm myRealm){
DefaultWebSecurityManager ds = new DefaultWebSecurityManager();
ds.setRealm(myRealm);
return ds;
}
@Bean
public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultSecurityManager){
ShiroFilterFactoryBean sf = new ShiroFilterFactoryBean();
//设置安全管理器
sf.setSecurityManager(defaultSecurityManager);
sf.setLoginUrl("/login");
sf.setUnauthorizedUrl("/non");
sf.setSuccessUrl("/index");
/**
* 自定义过滤器
* anon:
* authc:
* user: 只有实现了remberme的操作才能访问
* perms: 必须得到资源权限才能访问
* role: 必须得到角色权限的时候才能访问
*/
Map<String,String> china = new LinkedHashMap<>();
china.put("/index","authc");
china.put("/update","authc");
china.put("/non","authc");
china.put("/toLogin","anon");
china.put("/add","perms[user:add]");
china.put("/**","anon");
sf.setFilterChainDefinitionMap(china);
return sf;
}
@Bean(name = "myRealm")
public MyRealm getRealm(){
return new MyRealm();
}
自定义编写realm 继承AuthorizingRealm 实现doGetAuthorizationInfo 和doGetAuthenticationInfo方法
/**
* 自定义授权逻辑
* Authorization
*
* @param principalCollection
* @return
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
//给资源授权
SimpleAuthorizationInfo simpleAuthorizationInfo = new SimpleAuthorizationInfo();
//加上授权字符串(当前用户已经授权)
simpleAuthorizationInfo.addStringPermission("user:add");
return simpleAuthorizationInfo;
}
/**
* 自定义认证的逻辑
* 判断用户名和密码
*
* @param authenticationToken
* @return
* @throws AuthenticationException
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
//直接强转
UsernamePasswordToken auth = (UsernamePasswordToken) authenticationToken;
System.out.println("处理用户登录逻辑");
char[] password = auth.getPassword();
String username = auth.getUsername();
if(!"user".equals(username)){
//返回null 会抛出 UnknownAccountException
return null;
}
//用户传入的密码 数据库中加载出来的密码
return new SimpleAuthenticationInfo(password,"123","");
}
首先配置shiro的配置类使用@Configuration注解类上,这里面我们需要基本的三个配置类
@Bean
ShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultSecurityManager)
@Bean(name = "securityManager")
DefaultWebSecurityManager (@Qualifier("myRealm") MyRealm myRealm)
@Bean(name = "myRealm")
MyRealm()
第一个是可以自定义认证授权规则,配置权限拦截规则指定跳转页面
第二个是将shiro的安全管理器注入,然后返回
第三种是自定义实现自己认证授权逻辑
自定义realm
继承自AuthorizingRealm,实现其中的两个方法
`protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection)`
1. 此方法是授权逻辑的实现,指定用户可以拥有那些权限,将其set到addStringPermission集合中即可
2. 其中授权类是其的一个子类
3. SimpleAuthorizationInfo simpleAuthorizationInfo
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken)
此方式认证逻辑,用于判断用户是否登录成功,或者异常
用户名判断错误返回 null
密码使用new SimpleAuthenticationInfo(用户输入的密码,数据库的密码,"");
举个例子:
/**
* 自定义授权逻辑
* Authorization
*
* @param principalCollection
* @return
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
//给资源授权
SimpleAuthorizationInfo simpleAuthorizationInfo = new SimpleAuthorizationInfo();
//加上授权字符串(当前用户已经授权)
simpleAuthorizationInfo.addStringPermission("user:add");
return simpleAuthorizationInfo;
} /**
* 自定义认证的逻辑
* 判断用户名和密码
*
* @param authenticationToken
* @return
* @throws AuthenticationException
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
UsernamePasswordToken auth = (UsernamePasswordToken) authenticationToken;
System.out.println("处理用户登录逻辑");
char[] password = auth.getPassword();
String username = auth.getUsername();
if(!"user".equals(username)){
//返回null 会抛出 UnknownAccountException
return null;
}
return new SimpleAuthenticationInfo(password,"123","");
}
/**
* 自定密码判断
*
* @param pass
* @return
*/
private boolean isPassWord(char[] pass){
String password = "123";
if(pass.length != password.length()){
return false;
}
char[] chars = password.toCharArray();
for(int i = 0; i < pass.length; i++){
if(chars[i] != pass[i]){
return false;
}
}
return true;
} // 当然授权也可以在controller层中通过@RequiresPermissions("user:update")注解在当前用户操作的地址上授权
<p style="color:red">
注意: 这里面需要在shiroconfig中配置以下内容:
</p>
/**
* 解决@RequiresPermissions("XX:XXX:...")注解无效
*
* @return
*/
@Bean("lifecycleBeanPostProcessor")
public LifecycleBeanPostProcessor lifecycleBeanPostProcessor() {
return new LifecycleBeanPostProcessor();
} @Bean
public DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator() {
DefaultAdvisorAutoProxyCreator proxyCreator = new DefaultAdvisorAutoProxyCreator();
proxyCreator.setProxyTargetClass(true);
return proxyCreator;
} @Bean
public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(@Qualifier("securityManager") DefaultWebSecurityManager defaultSecurityManager) {
AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();
advisor.setSecurityManager(defaultSecurityManager);
return advisor;
}
并且在controller里面配置的权限检验,用户验证失败,会跳转到/error页面上,需要自己自定义页面
注意:
这里面有个大坑,开始使用如下代码发现并未解决问题
@Bean
public SimpleMappingExceptionResolver simpleMappingExceptionResolver(){
SimpleMappingExceptionResolver simpleMappingExceptionResolver = new SimpleMappingExceptionResolver();
Properties properties = new Properties();
properties.put("org.apache.shiro.authz.UnauthorizedException","/non");
simpleMappingExceptionResolver.setExceptionMappings(properties);
return simpleMappingExceptionResolver;
}
最后通过springMVC的异常处理类指定跳转页面,才解决此问题。
@ControllerAdvice
public class MyExceptionHandler { @ExceptionHandler(UnauthenticatedException.class)
public String nauthenticatedException(Model model){
model.addAttribute("errorMsg","当前无用户!");
return "nonauth";
}
@ExceptionHandler(UnauthorizedException.class)
public String nauthorizedException(Model model){
model.addAttribute("errorMsg","当前用户没有权限");
return "nonauth";
}
}
不错
现在已经解决了两个问题:
1. 在用户未登录的时候,直接访问带有@RequiresPermissions权限的注解时会报错,而不是跳转到指定页面,或者返回相应的信息
2. 未使用在remal配置的权限过滤器的时候,而是在@Controller上直接带有@RequiresPermissions("user:add") 会报500错误,而不是可控操作
在doGetAuthenticationInfo方法中,获取用户登录时候的信息操作,验证用户,将用户存入session,以后通过subject对象强转。
SimpleAuthenticationInfo simpleAuthenticationInfo = new SimpleAuthenticationInfo(
user,
user.getPassword(),
ByteSource.Util.bytes(salt),
//realm name
getName());
user 是开始通过用户名查询到的用户信息
salt是加盐处理,硬编码加盐处理
#shiro密码匹配#
这里先来个简单的直接加盐 然后使用MD5加密方式
密码匹配则时先将用户输入的密码加盐再字符串比较
实现自定义的Realm 继承自AuthorizingRealm doGetAuthenticationInfo方法中使用 SimpleAuthenticationInfo simpleAuthenticationInfo = new SimpleAuthenticationInfo(
用户对象
user,
数据库用户密码
user.getPassword(),
加盐处理
ByteSource.Util.bytes(salt),
//realm name
getName()); 将用户对象保存至
String string = MD5Util.encryptString(password+salt);
UsernamePasswordToken usernamePasswordToken = new UsernamePasswordToken(userName,string);
使用shiro的HashedCredentialsMatcher自定义密码加密
先模拟用户和密码数据 使用单元测试:
@Test
public void contextLoads() {
String algorithmName = "md5";
String username = "admin";
String password = "123";
String salt1 = username;
String salt2 = new SecureRandomNumberGenerator().nextBytes().toHex();
int hashIterations = 3;
SimpleHash hash = new SimpleHash(algorithmName, password,
salt1 + salt2, hashIterations);
String encodedPassword = hash.toHex();
System.out.println(encodedPassword);
System.out.println(salt2);
}
将生成的数据保存到数据库中,验证的时候将密码和盐拿出来,这时候,用户的注册名和密码在注册的时候保存到数据库中
在Shiro的配置类中,注入
/**
* 凭证匹配器
* (由于我们的密码校验交给Shiro的SimpleAuthenticationInfo进行处理了
* 所以我们需要修改下doGetAuthenticationInfo中的代码;
* )
* @return
*/
@Bean(name = "hashedCredentialsMatcher")
public HashedCredentialsMatcher hashedCredentialsMatcher(){
HashedCredentialsMatcher hashedCredentialsMatcher = new MyHashedCredent();
//使用指定的散列算法
hashedCredentialsMatcher.setHashAlgorithmName("MD5");
//几次散列?
hashedCredentialsMatcher.setHashIterations(3);
//设置16进制编码
hashedCredentialsMatcher.setStoredCredentialsHexEncoded(true);
return hashedCredentialsMatcher;
}
在将其自定义的密码加载类注入到自定义的realm中
@Bean(name = "myRealm")
public MyRealm getRealm(@Qualifier("hashedCredentialsMatcher") HashedCredentialsMatcher hashedCredentialsMatcher){
MyRealm myRealm = new MyRealm();
// 设置自定义加密
myRealm.setCredentialsMatcher(hashedCredentialsMatcher);
return myRealm;
}
下面实现自定义密码:
/**
* @author zhangyi
* @date 2018/12/12 20:43
*/
public class MyHashedCredent extends HashedCredentialsMatcher {
public MyHashedCredent(){}
/**
* 以后放到redis中保存
*/
private Cache<String, AtomicInteger> passwordRetryCache; public MyHashedCredent(CacheManager cacheManager) {
passwordRetryCache = cacheManager.getCache("passwordRetryCache");
}
@Override
public boolean doCredentialsMatch(AuthenticationToken token, AuthenticationInfo info) {
//限制每个用户的请求登录次数(密码错误的时候)
String username = (String) token.getPrincipal();
if(!Objects.isNull(passwordRetryCache)) {
// retry count + 1
AtomicInteger retryCount = passwordRetryCache.get(username);
if (retryCount == null) {
retryCount = new AtomicInteger(0);
passwordRetryCache.put(username, retryCount);
}
if (retryCount.incrementAndGet() > 5) {
// if retry count > 5 throw
throw new ExcessiveAttemptsException();
}
}
boolean matches = super.doCredentialsMatch(token, info);
if (matches) {
// clear retry count
// passwordRetryCache.remove(username);
}
return matches;
}
}
按照开涛神的方法,计算其密码重试的次数,将其保存到EhCache中,这里我保存到redis,因为好用吧。
开始使用硬编码加盐,网上说可能会有安全问题,现在采用
用户名+密码+随机数 --> 在N次散列 加密,应该好一点点
我这里是继承了HashedCredentialsMatcher这中加密方式,还可以继承SimpleCredentialsMatcher,或者继承PasswordMatcher,或者实现CredentialsMatcher接口来加密,不过本质上差不多