SpringBoot整合Spring Security，使用数据库鉴权（四）

╰半夏微凉° 2022-12-10 01:12 189阅读 0赞

# 一、实现UserDetails接口 #

package com.example.securityzimug.config.auth;
    
    import org.springframework.security.core.GrantedAuthority;
    import org.springframework.security.core.userdetails.UserDetails;
    
    import java.util.Collection;
    
    public class MyUserDetails implements UserDetails {
    
        String password; //密码
        String username;  //用户名
        boolean accountNonExpired;   //是否没过期
        boolean accountNonLocked;   //是否没被锁定
        boolean credentialsNonExpired;  //是否没过期
        boolean enabled;  //账号是否可用
        Collection<? extends GrantedAuthority> authorities;  //用户的权限集合
    
        @Override
        public Collection<? extends GrantedAuthority> getAuthorities() {
            return authorities;
        }
    
        @Override
        public String getPassword() {
            return password;
        }
    
        @Override
        public String getUsername() {
            return username;
        }
    
        @Override
        public boolean isAccountNonExpired() {
            return true;
        }
    
        @Override
        public boolean isAccountNonLocked() {
            return true;
        }
    
        @Override
        public boolean isCredentialsNonExpired() {
            return true;
        }
    
        @Override
        public boolean isEnabled() {
            return enabled;
        }
    
        public void setPassword(String password) {
            this.password = password;
        }
    
        public void setUsername(String username) {
            this.username = username;
        }
    
        public void setAccountNonExpired(boolean accountNonExpired) {
            this.accountNonExpired = accountNonExpired;
        }
    
        public void setAccountNonLocked(boolean accountNonLocked) {
            this.accountNonLocked = accountNonLocked;
        }
    
        public void setCredentialsNonExpired(boolean credentialsNonExpired) {
            this.credentialsNonExpired = credentialsNonExpired;
        }
    
        public void setEnabled(boolean enabled) {
            this.enabled = enabled;
        }
    
        public void setAuthorities(Collection<? extends GrantedAuthority> authorities) {
            this.authorities = authorities;
        }
    }

# 二、编写mapper #

在编写之前需要导入依赖。

<dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.1.3</version>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>

package com.example.securityzimug.config.auth;
    
    import org.apache.ibatis.annotations.Mapper;
    import org.apache.ibatis.annotations.Param;
    import org.apache.ibatis.annotations.Select;
    
    import java.util.List;
    
    @Mapper
    public interface MyUserDetailsServiceMapper {
    
        //根据userID查询用户信息
        @Select("SELECT username,password,enabled\n" +
                "FROM sys_user u\n" +
                "WHERE u.username = #{userId} or u.phone = #{userId}")
        MyUserDetails findByUserName(@Param("userId") String userId);
    
        //根据userID查询用户角色列表
        @Select("SELECT role_code\n" +
                "FROM sys_role r\n" +
                "LEFT JOIN sys_user_role ur ON r.id = ur.role_id\n" +
                "LEFT JOIN sys_user u ON u.id = ur.user_id\n" +
                "WHERE u.username = #{userId} or u.phone = #{userId}")
        List<String> findRoleByUserName(@Param("userId") String userId);
    
    
        //根据用户角色查询用户权限
        @Select({
          "<script>",
             "SELECT url " ,
             "FROM sys_menu m " ,
             "LEFT JOIN sys_role_menu rm ON m.id = rm.menu_id " ,
             "LEFT JOIN sys_role r ON r.id = rm.role_id ",
             "WHERE r.role_code IN ",
             "<foreach collection='roleCodes' item='roleCode' open='(' separator=',' close=')'>",
                "#{roleCode}",
             "</foreach>",
          "</script>"
        })
        List<String> findAuthorityByRoleCodes(@Param("roleCodes") List<String> roleCodes);
    
    }

# 三、实现UserDetailsService接口 #

package com.example.securityzimug.config.auth;
    
    import org.springframework.security.core.authority.AuthorityUtils;
    import org.springframework.security.core.userdetails.UserDetails;
    import org.springframework.security.core.userdetails.UserDetailsService;
    import org.springframework.security.core.userdetails.UsernameNotFoundException;
    import org.springframework.stereotype.Component;
    
    import javax.annotation.Resource;
    import java.util.List;
    import java.util.stream.Collectors;
    
    /**
     * @author baikunlong
     * @date 2020/9/22 23:14
     */
    @Component
    public class MyUserDetailsService implements UserDetailsService {
    
        @Resource
        private MyUserDetailsServiceMapper myUserDetailsServiceMapper;
    
        @Override
        public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
            MyUserDetails myUserDetails = myUserDetailsServiceMapper.findByUserName(username);
            //角色集合
            List<String> roleList = myUserDetailsServiceMapper.findRoleByUserName(username);
            //资源权限集合
            List<String> authorities = myUserDetailsServiceMapper.findAuthorityByRoleCodes(roleList);
    
            //角色是特殊的权限，前缀规定为ROLE_
            roleList=roleList.stream().map(role->"ROLE_"+role).collect(Collectors.toList());
            authorities.addAll(roleList);
            myUserDetails.setAuthorities(AuthorityUtils.commaSeparatedStringToAuthorityList(String.join(",",authorities)));
            return myUserDetails;
        }
    }

# 四、修改配置类 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWt1bmxvbmc_size_16_color_FFFFFF_t_70][]

注意这里的UserDetailsService一定要使用注入方式，我一开始手动new的，这会导致mapper为空，在service那排错了很久，后来才发现是这边的问题。

![20200923090551627.png][]

# 五、修改配置文件 #

spring:
      security:
    #    用数据库后，内存模式的就先注释掉吧
    #    user:
    #      name: admin
    #      password: admin
        loginType: JSON
      datasource:
        url: jdbc:mysql://localhost:3306/study_springboot_05_security_zimug?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai
        username: root
        password: '123456'
        driver-class-name: com.mysql.cj.jdbc.Driver
    
    #logging:
    #  level:
    #    root: debug

需要注意的是，配置文件如果是yml文件类型的，密码一定要加单引号或者双引号，不然连接不了数据库的，properties不存在这个问题。

# 六、动态鉴权 #

在一开始我们的鉴权都是写的静态的，当有新需求时可能会更改代码，所以需要动态的鉴权。

编写一个类来鉴权。

package com.example.securityzimug.config.auth;
    
    import org.springframework.security.core.Authentication;
    import org.springframework.security.core.GrantedAuthority;
    import org.springframework.security.core.authority.AuthorityUtils;
    import org.springframework.security.core.userdetails.UserDetails;
    import org.springframework.stereotype.Component;
    
    import javax.servlet.http.HttpServletRequest;
    import java.util.List;
    
    @Component("rabcService")
    public class MyRBACService {
    
        /**
         * 判断某用户是否具有该request资源的访问权限
         */
        public boolean hasPermission(HttpServletRequest request, Authentication authentication){
            //这个就是UserDetails
            Object principal = authentication.getPrincipal();
            if(principal instanceof UserDetails){
                UserDetails userDetails = ((UserDetails)principal);
                //这里的请求地址就是资源权限名
                List<GrantedAuthority> authorityList =
                        AuthorityUtils.commaSeparatedStringToAuthorityList(request.getRequestURI());
                //判断当前用户是否有这个资源权限
                return userDetails.getAuthorities().contains(authorityList.get(0));
            }
            return false;
        }
    }

然后在配置类里更改下权限配置：

![20200923100745395.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWt1bmxvbmc_size_16_color_FFFFFF_t_70]: /images/20221123/c5472a47e5e8436c9f1d16d8d58c001b.png
[20200923090551627.png]: /images/20221123/0345c8bb0011413b876473bba511c270.png
[20200923100745395.png]: /images/20221123/b023cd9c69b349d0ae83b5c3b8f06894.png