SpringSecurity从数据库中获取用户信息进行验证

小咪咪 2022-12-26 13:30 186阅读 0赞

**SpringSecurity从数据库中获取用户信息进行验证**

**基于 [SpringBoot与SpringSecurity整合][SpringBoot_SpringSecurity] 案例的修改：**

--------------------

*  **数据库 user 表**  
    ![在这里插入图片描述][20201205215328651.png]  
    注，密码是由 BCrypt 算法加密对应用户名所得。

root	$2a$10$uzHVooZlCWBkaGScKnpha.ZrK31NI89flKkSuTcKYjdc5ihTPtPyq
    blu		$2a$10$mI0TRIcNF4mg34JmH6T1KeystzTWDzWFNL5LQmmlz.fHndcwYHZGe
    kaka	$2a$10$/GMSSJ3AzeeBK3rBC4t8BOZ5zkfb38IlwlQl.6mYTEpf22r/cCZ1a
    admin	$2a$10$FKf/V.0WdHnTNWHDTtPLJe2gBxTI6TBVyFjloXG9IuH4tjebOTqcS

--------------------

*  **数据库 role 表**  
    ![在这里插入图片描述][20201205215708257.png]  
    注：role名称必须带上前缀 ROLE\_ （SpringSecurity框架要求）

--------------------

*  **role\_user 表**  
    ![在这里插入图片描述][2020120521593062.png]

--------------------

*  **实体类 SysUser**

@Data
    public class SysUser { 
    	
    	private Integer id;
    	private String name;
    	private String password;
    }

*  **实体类 SysRole**

@Data
    public class SysRole { 
    	private Integer id;
    	private String name;
    }

--------------------

*  **UserMapper**

public interface UserMapper { 
    
    	@Select("select * from user where name = #{name}")
    	SysUser loadUserByUsername(String name);
    
    }

*  **RoleMapper**

public interface RoleMapper { 
    
    	@Select("SELECT role.`name` FROM role WHERE role.id in (SELECT role_id FROM "
    			+ " role_user as r_s JOIN `user` as u ON r_s.user_id = u.id and u.id = #{id})")
    	List<SysRole> findRoleByUserId(int id);
    	
    }

*  **UserService 接口**

该接口需继承UserDetailsService

package com.blu.service;
    
    import org.springframework.security.core.userdetails.UserDetailsService;
    
    public interface UserService extends UserDetailsService { 
    
    }

*  **UserServiceImpl 实现类**

package com.blu.service.impl;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.security.core.authority.SimpleGrantedAuthority;
    import org.springframework.security.core.userdetails.User;
    import org.springframework.security.core.userdetails.UserDetails;
    import org.springframework.security.core.userdetails.UsernameNotFoundException;
    import org.springframework.stereotype.Service;
    import org.springframework.transaction.annotation.Transactional;
    
    import com.blu.entity.SysRole;
    import com.blu.entity.SysUser;
    import com.blu.mapper.LoginMapper;
    import com.blu.mapper.UserMapper;
    import com.blu.service.UserService;
    
    @Service
    @Transactional
    public class UserServiceImpl implements UserService { 
    	
    	@Autowired
    	private UserMapper userMapper;
    	
    	@Autowired
    	private RoleMapper roleMapper;
    
    	@Override
    	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { 
    		try { 
    			SysUser sysUser = userMapper.loadUserByUsername(username);
    			if(sysUser==null) { 
    				return null;
    			}
    			List<SimpleGrantedAuthority> authorities = new ArrayList<>();
    			List<SysRole> list = roleMapper.findRoleByUserId(sysUser.getId());
    			for(SysRole role : list) { 
    				authorities.add(new SimpleGrantedAuthority(role.getName()));
    			}
    			//封装 SpringSecurity 需要的UserDetails 对象并返回
    			UserDetails userDetails = new User(sysUser.getName(),sysUser.getPassword(),authorities);
    			return userDetails;
    		} catch (Exception e) { 
    			e.printStackTrace();
    			//返回null即表示认证失败
    			return null;
    		}
    	}
    
    }

*  **加密类**

@Bean
    public BCryptPasswordEncoder bcryptPasswordEncoder(){ 
    	return new BCryptPasswordEncoder();
    }

*  **SpringSecurity 配置类**

package com.blu.config;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
    import org.springframework.security.config.annotation.web.builders.HttpSecurity;
    import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
    import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
    import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
    
    import com.blu.service.impl.UserServiceImpl;
    
    @EnableWebSecurity
    public class SecurityConfig extends WebSecurityConfigurerAdapter{ 
    	
    	@Autowired
    	private UserServiceImpl userServiceImpl;
    	@Autowired
    	private BCryptPasswordEncoder bcryptPasswordEncoder;
    	
    	@Override
    	protected void configure(HttpSecurity http) throws Exception { 
    		
    		http.authorizeRequests()
    			.antMatchers("/").permitAll()
    			.antMatchers("/level1/**").hasRole("vip1")
    			.antMatchers("/level2/**").hasRole("vip2")
    			.antMatchers("/level3/**").hasRole("vip3");
    		
    		http.formLogin().loginPage("/tologin")
    						.usernameParameter("name")
    						.passwordParameter("password")
    						.loginProcessingUrl("/login");
    		http.csrf().disable();
    		http.logout().logoutSuccessUrl("/");
    		http.rememberMe().rememberMeParameter("remember");
    		
    	}
    	
    	@Override
    	protected void configure(AuthenticationManagerBuilder auth) throws Exception { 
    		auth.userDetailsService(userServiceImpl).passwordEncoder(bcryptPasswordEncoder);
    	}
    	
    }

--------------------

以上方式在认证时是将数据库中查出的用户信息通过 UserServiceImpl 封装成 UserDetails 交给 SpringSecurity去认证的，我们还可以让用户实体类直接实现UserDetails：

MyUser：

package com.blu.entity;
    
    import java.util.Collection;
    import java.util.List;
    
    import org.springframework.security.core.GrantedAuthority;
    import org.springframework.security.core.userdetails.UserDetails;
    
    import com.fasterxml.jackson.annotation.JsonIgnore;
    
    public class MyUser implements UserDetails { 
    	
    	@Data
    	private Integer id;
    	private String name;
    	private String password;
    	private List<MyRole> roles;
    
    	@JsonIgnore
    	@Override
    	public Collection<? extends GrantedAuthority> getAuthorities() { 
    		
    		return roles;
    	}
    
    	@Override
    	public String getPassword() { 
    		return password;
    	}
    
    	@JsonIgnore
    	@Override
    	public String getUsername() { 
    		return name;
    	}
    
    	@JsonIgnore
    	@Override
    	public boolean isAccountNonExpired() { 
    		return true;
    	}
    
    	@JsonIgnore
    	@Override
    	public boolean isAccountNonLocked() { 
    		return true;
    	}
    
    	@JsonIgnore
    	@Override
    	public boolean isCredentialsNonExpired() { 
    		return true;
    	}
    
    	@JsonIgnore
    	@Override
    	public boolean isEnabled() { 
    		return true;
    	}
    	
    }

MyRole：

package com.blu.entity;
    
    import org.springframework.security.core.GrantedAuthority;
    import com.fasterxml.jackson.annotation.JsonIgnore;
    
    @Data
    public class MyRole implements GrantedAuthority { 
    	
    	private Integer id;
    	private String name;
    	
    	@JsonIgnore
    	@Override
    	public String getAuthority() { 
    		return name;
    	}
    
    }

MyUserMapper：

package com.blu.mapper;
    
    import com.blu.entity.MyUser;
    
    public interface MyUserMapper { 
    	
    	MyUser findByName(String name);
    
    }

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
    
    <mapper namespace="com.blu.mapper.MyUserMapper">
    	<resultMap type="com.blu.entity.MyUser" id="myUserMap">
    		<id column="uid" property="id"></id>
    		<result column="uname" property="name"></result>
    		<result column="password" property="password"></result>
    		<collection property="roles" ofType="com.blu.entity.MyRole">
    			<id column="rid" property="id" />
    			<result column="rname" property="name" />
    		</collection>
    	</resultMap>
    
    	<select id="findByName" parameterType="String" resultMap="myUserMap">
    		select u.id uid,u.name uname,u.password,r.id rid,r.name rname
    		from user u,role r,role_user ur 
    		where u.name = #{name} and ur.user_id = u.id and ur.role_id = r.id
    	</select>
    </mapper>

修改：UserServiceImpl：

package com.blu.service.impl;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.security.core.userdetails.UserDetails;
    import org.springframework.security.core.userdetails.UsernameNotFoundException;
    import org.springframework.stereotype.Service;
    
    import com.blu.entity.MyUser;
    import com.blu.mapper.MyUserMapper;
    import com.blu.service.UserService;
    
    @Service
    public class UserServiceImpl implements UserService { 
    	
    	@Autowired
    	private MyUserMapper myUserMapper;
    
    	@Override
    	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { 
    		MyUser myUser = myUserMapper.findByName(username);
    		return myUser;
    	}
    
    }

[SpringBoot_SpringSecurity]: https://blucoding.blog.csdn.net/article/details/108599505
[20201205215328651.png]: /images/20221120/1908123a145d4fa7abe4514cfa7f67c6.png
[20201205215708257.png]: https://img-blog.csdnimg.cn/20201205215708257.png
[2020120521593062.png]: https://img-blog.csdnimg.cn/2020120521593062.png