流程图:
1.接上一篇博客https://mp.csdn.net/console/editor/html/104576494，准备好环境。
2.spring-security.xml中的配置：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd">
<!-- 配置不拦截的资源 -->
<security:http pattern="/login.jsp" security="none"/>
<security:http pattern="/failer.jsp" security="none"/>
<security:http pattern="/css/**" security="none"/>
<security:http pattern="/img/**" security="none"/>
<security:http pattern="/plugins/**" security="none"/>
<!--
配置具体的规则
auto-config="true" 不用自己编写登录的页面，框架提供默认登录页面
use-expressions="false" 是否使用SPEL表达式（没学习过）
-->
<security:http auto-config="true" use-expressions="false">
<!-- 配置具体的拦截的规则 pattern="请求路径的规则" access="访问系统的人，必须有ROLE_USER或者ROLE_ADMIN的角色" -->
<security:intercept-url pattern="/**" access="ROLE_USER,ROLE_ADMIN"/>
<!-- 定义跳转的具体的页面 -->
<security:form-login
login-page="/login.jsp"
login-processing-url="/login.do"//请求路径
default-target-url="/index.jsp"
authentication-failure-url="/failer.jsp"
authentication-success-forward-url="/pages/main.jsp"
/>
<!-- 关闭跨域请求 -->
<security:csrf disabled="true"/>
<!-- 只要访问到/logout.do就退出，自动跳转到/login.jsp页面 -->
<security:logout invalidate-session="true" logout-url="/logout.do" logout-success-url="/login.jsp" />
</security:http>
<!-- 切换成数据库中的用户名和密码 -->
<security:authentication-manager>
<security:authentication-provider user-service-ref="userService">//userService是认证器需要定义出来
<!-- 配置加密的方式，用户登录的时候可以知道 -->
<security:password-encoder ref="passwordEncoder"/>
</security:authentication-provider>
</security:authentication-manager>
<!-- 配置加密类，当添加用户的时候，对用户密码进行加密 -->
<bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>
<!-- 提供了入门的方式，在内存中存入用户名和密码
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="admin" password="{noop}admin" authorities="ROLE_USER"/>
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
-->
</beans>
3.定义一个IUserService继承UserDetailsService接口：
在创建一个UserServiceImpl去实现IUserService接口，覆盖loadUserByUsername方法:
@Service("userService")//这个名字必须与spring-security.xml中配置的认证器名字一样
public class UserServiceImpl implements IUserService {
@Autowired
private IUserDao userDao;
@Autowired//当执行保存用户的时候对用户的密码进行加密
private BCryptPasswordEncoder bCryptPasswordEncoder;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
UserInfo userInfo = null;
try {
userInfo = userDao.findByUsername(username);//调用到层根据用户查找用户信息，返回值为UserInfo对象
} catch (Exception e) {
e.printStackTrace();
}
//处理自己的用户对象封装成UserDetails
// User user=new User(userInfo.getUsername(),"{noop}"+userInfo.getPassword(),getAuthority(userInfo.getRoles()));//下面这个三元表达式代表该账户是否激活可用
User user = new User(userInfo.getUsername(), userInfo.getPassword(), userInfo.getStatus() == 0 ? false : true, true, true, true, getAuthority(userInfo.getRoles()));
return user;
}
//作用就是返回一个List集合，集合中装入的是角色描述
public List<SimpleGrantedAuthority> getAuthority(List<Role> roles) {
List<SimpleGrantedAuthority> list = new ArrayList<>();
for (Role role : roles) {
list.add(new SimpleGrantedAuthority("ROLE_" + role.getRoleName()));
}
return list;
}
/**
* 用户的添加
* @param userInfo
*/
@Override
public void save(UserInfo userInfo) throws Exception {
//对密码进行加密处理
userInfo.setPassword(bCryptPasswordEncoder.encode(userInfo.getPassword()));
userDao.save(userInfo);
}
}
4.启动项目进行测试添加用户，新添加的用户是否可以登录成功。
