姓名: 李小娜
[嵌牛导读]:这篇文章主要介绍了详解spring security 配置多个AuthenticationProvider
[嵌牛鼻子]：spring security的大体介绍 开始配置多AuthenticationProvider
[嵌牛提问] :spring security 如何配置多个AuthenticationProvider？
[嵌牛正文] :spring security的大体介绍
spring security本身如果只是说配置，还是很简单易懂的（我也不知道网上说spring
security难，难在哪里），简单不需要特别的功能，一个WebSecurityConfigurerAdapter的实现，然后实现UserServiceDetails就是简单的数据库验证了，这个我就不说了。
spring security大体上是由一堆Filter（所以才能在spring
mvc前拦截请求）实现的，Filter有几个，登出Filter（LogoutFilter），用户名密码验证Filter（UsernamePasswordAuthenticationFilter）之类的，Filter再交由其他组件完成细分的功能，例如最常用的UsernamePasswordAuthenticationFilter会持有一个AuthenticationManager引用，AuthenticationManager顾名思义，验证管理器，负责验证的，但AuthenticationManager本身并不做具体的验证工作，AuthenticationManager持有一个AuthenticationProvider集合，AuthenticationProvider才是做验证工作的组件，AuthenticationManager和AuthenticationProvider的工作机制可以大概看一下这两个的java
doc，然后成功失败都有相对应该Handler 。大体的spring security的验证工作流程就是这样了。
开始配置多AuthenticationProvider
首先，写一个内存认证的AuthenticationProvider，这里我简单地写一个只有root帐号的AuthenticationProvider
packagecom.scau.equipment.config.common.security.provider;
importorg.springframework.security.authentication.AuthenticationProvider;
importorg.springframework.security.authentication.UsernamePasswordAuthenticationToken;
importorg.springframework.security.core.Authentication;
importorg.springframework.security.core.AuthenticationException;
importorg.springframework.security.core.GrantedAuthority;
importorg.springframework.security.core.authority.SimpleGrantedAuthority;
importorg.springframework.security.core.userdetails.User;
importorg.springframework.stereotype.Component;
importjava.util.Arrays;
importjava.util.List;
/**
* Created by Administrator on 2017-05-10.
*/
@Component
publicclassInMemoryAuthenticationProviderimplementsAuthenticationProvider {
privatefinalString adminName ="root";
privatefinalString adminPassword ="root";
//根用户拥有全部的权限
privatefinalList authorities = Arrays.asList(newSimpleGrantedAuthority("CAN_SEARCH"),
newSimpleGrantedAuthority("CAN_SEARCH"),
newSimpleGrantedAuthority("CAN_EXPORT"),
newSimpleGrantedAuthority("CAN_IMPORT"),
newSimpleGrantedAuthority("CAN_BORROW"),
newSimpleGrantedAuthority("CAN_RETURN"),
newSimpleGrantedAuthority("CAN_REPAIR"),
newSimpleGrantedAuthority("CAN_DISCARD"),
newSimpleGrantedAuthority("CAN_EMPOWERMENT"),
newSimpleGrantedAuthority("CAN_BREED"));
@Override
publicAuthentication authenticate(Authentication authentication)throwsAuthenticationException {
if(isMatch(authentication)){
User user =newUser(authentication.getName(),authentication.getCredentials().toString(),authorities);
returnnewUsernamePasswordAuthenticationToken(user,authentication.getCredentials(),authorities);
}
returnnull;
}
@Override
publicbooleansupports(Class authentication) {
returntrue;
}
privatebooleanisMatch(Authentication authentication){
if(authentication.getName().equals(adminName)&&authentication.getCredentials().equals(adminPassword))
returntrue;
else
returnfalse;
}
}
support方法检查authentication的类型是不是这个AuthenticationProvider支持的，这里我简单地返回true，就是所有都支持，这里所说的authentication为什么会有多个类型，是因为多个AuthenticationProvider可以返回不同的Authentication。
public Authentication authenticate(Authentication authentication) throws
AuthenticationException 方法就是验证过程。
如果AuthenticationProvider返回了null，AuthenticationManager会交给下一个支持authentication类型的AuthenticationProvider处理。
另外需要一个数据库认证的AuthenticationProvider，我们可以直接用spring
security提供的DaoAuthenticationProvider，设置一下UserServiceDetails和PasswordEncoder就可以了
@Bean
DaoAuthenticationProvider daoAuthenticationProvider(){
DaoAuthenticationProvider daoAuthenticationProvider =newDaoAuthenticationProvider();
daoAuthenticationProvider.setPasswordEncoder(newBCryptPasswordEncoder());
daoAuthenticationProvider.setUserDetailsService(userServiceDetails);
returndaoAuthenticationProvider;
}
最后在WebSecurityConfigurerAdapter里配置一个含有以上两个AuthenticationProvider的AuthenticationManager，依然重用spring
security提供的ProviderManager
packagecom.scau.equipment.config.common.security;
importcom.scau.equipment.config.common.security.handler.AjaxLoginFailureHandler;
importcom.scau.equipment.config.common.security.handler.AjaxLoginSuccessHandler;
importcom.scau.equipment.config.common.security.provider.InMemoryAuthenticationProvider;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.context.annotation.Bean;
importorg.springframework.context.annotation.Configuration;
importorg.springframework.security.authentication.AuthenticationManager;
importorg.springframework.security.authentication.ProviderManager;
importorg.springframework.security.authentication.dao.DaoAuthenticationProvider;
importorg.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
importorg.springframework.security.config.annotation.authentication.configurers.provisioning.InMemoryUserDetailsManagerConfigurer;
importorg.springframework.security.config.annotation.authentication.configurers.provisioning.UserDetailsManagerConfigurer;
importorg.springframework.security.config.annotation.web.builders.HttpSecurity;
importorg.springframework.security.config.annotation.web.builders.WebSecurity;
importorg.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
importorg.springframework.security.core.GrantedAuthority;
importorg.springframework.security.core.authority.SimpleGrantedAuthority;
importorg.springframework.security.core.userdetails.UserDetailsService;
importorg.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
importjava.util.Arrays;
importjava.util.List;
/**
* Created by Administrator on 2017/2/17.
*/
@Configuration
publicclassSecurityConfigextendsWebSecurityConfigurerAdapter {
@Autowired
UserDetailsService userServiceDetails;
@Autowired
InMemoryAuthenticationProvider inMemoryAuthenticationProvider;
@Bean
DaoAuthenticationProvider daoAuthenticationProvider(){
DaoAuthenticationProvider daoAuthenticationProvider =newDaoAuthenticationProvider();
daoAuthenticationProvider.setPasswordEncoder(newBCryptPasswordEncoder());
daoAuthenticationProvider.setUserDetailsService(userServiceDetails);
returndaoAuthenticationProvider;
}
@Override
protectedvoidconfigure(HttpSecurity http)throwsException {
http
.csrf().disable()
.rememberMe().alwaysRemember(true).tokenValiditySeconds(86400).and()
.authorizeRequests()
.antMatchers("/","/*swagger*/**","/v2/api-docs").permitAll()
.anyRequest().authenticated().and()
.formLogin()
.loginPage("/")
.loginProcessingUrl("/login")
.successHandler(newAjaxLoginSuccessHandler())
.failureHandler(newAjaxLoginFailureHandler()).and()
.logout().logoutUrl("/logout").logoutSuccessUrl("/");
}
@Override
publicvoidconfigure(WebSecurity web)throwsException {
web.ignoring().antMatchers("/public/**","/webjars/**","/v2/**","/swagger**");
}
@Override
protectedAuthenticationManager authenticationManager()throwsException {
ProviderManager authenticationManager =newProviderManager(Arrays.asList(inMemoryAuthenticationProvider,daoAuthenticationProvider()));
//不擦除认证密码，擦除会导致TokenBasedRememberMeServices因为找不到Credentials再调用UserDetailsService而抛出UsernameNotFoundException
authenticationManager.setEraseCredentialsAfterAuthentication(false);
returnauthenticationManager;
}
/**
* 这里需要提供UserDetailsService的原因是RememberMeServices需要用到
*@return
*/
@Override
protectedUserDetailsService userDetailsService() {
returnuserServiceDetails;
}
}
基本上都是重用了原有的类，很多都是默认使用的，只不过为了修改下行为而重新配置。
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