SpringCloud之Security

2020 年 6 月 10 日
筆記
Java框架

Spring Security是Spring提供的一個安全框架，提供認證和授權功能，最主要的是它提供了簡單的使用方式，同時又有很高的靈活性，簡單，靈活，強大。

我個人部落格系統採用的許可權框架就是Spring Security，正好整合到SpringCloud裡面。

一般系統里關於角色方面通常有這麼幾張表，角色表、用戶-角色表、菜單表、角色-菜單表等。

不過我個人部落格系統主要以wordpress作為參考，沿用其12張表,如圖:

一、導入Maven依賴

<properties>
       <jjwt.version>0.9.0</jjwt.version>
       <spring-security-jwt.version>1.0.9.RELEASE</spring-security-jwt.version>
</properties>
 <!-- springsecurity-->
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-security</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.security</groupId>
           <artifactId>spring-security-jwt</artifactId>
           <version>${spring-security-jwt.version}</version>
       </dependency>
       <dependency>
           <groupId>io.jsonwebtoken</groupId>
           <artifactId>jjwt</artifactId>
           <version>${jjwt.version}</version>
       </dependency>

二、編寫Spring Security配置類

package com.springcloud.blog.admin.config;
import com.springcloud.blog.admin.security.UserAuthenticationProvider;
import com.springcloud.blog.admin.security.UserPermissionEvaluator;
import com.springcloud.blog.admin.security.handler.*;
import com.springcloud.blog.admin.security.jwt.JWTAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
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.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler;

/**
 * SpringSecurity配置類
 * @Author youcong
 */
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true) //開啟許可權註解,默認是關閉的
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    /**
     * 自定義登錄成功處理器
     */
    @Autowired
    private UserLoginSuccessHandler userLoginSuccessHandler;
    /**
     * 自定義登錄失敗處理器
     */
    @Autowired
    private UserLoginFailureHandler userLoginFailureHandler;
    /**
     * 自定義註銷成功處理器
     */
    @Autowired
    private UserLogoutSuccessHandler userLogoutSuccessHandler;
    /**
     * 自定義暫無許可權處理器
     */
    @Autowired
    private UserAuthAccessDeniedHandler userAuthAccessDeniedHandler;
    /**
     * 自定義未登錄的處理器
     */
    @Autowired
    private UserAuthenticationEntryPointHandler userAuthenticationEntryPointHandler;
    /**
     * 自定義登錄邏輯驗證器
     */
    @Autowired
    private UserAuthenticationProvider userAuthenticationProvider;

    /**
     * 加密方式
     * @Author youcong
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder(){
        return new BCryptPasswordEncoder();
    }
    /**
     * 注入自定義PermissionEvaluator
     */
    @Bean
    public DefaultWebSecurityExpressionHandler userSecurityExpressionHandler(){
        DefaultWebSecurityExpressionHandler handler = new DefaultWebSecurityExpressionHandler();
        handler.setPermissionEvaluator(new UserPermissionEvaluator());
        return handler;
    }

    /**
     * 配置登錄驗證邏輯
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth){
        //這裡可啟用我們自己的登陸驗證邏輯
        auth.authenticationProvider(userAuthenticationProvider);
    }
    /**
     * 配置security的控制邏輯
     * @Author youcong
     * @Param  http 請求
     */
    @Override
    protected void configure(HttpSecurity http) throws Exception {

        http.authorizeRequests()
                // 不進行許可權驗證的請求或資源(從配置文件中讀取)
                .antMatchers(JWTConfig.antMatchers.split(",")).permitAll()
                // .antMatchers("/*").permitAll()
                // 其他的需要登陸後才能訪問
                .anyRequest().authenticated()
                .and()
                // 配置未登錄自定義處理類
                .httpBasic().authenticationEntryPoint(userAuthenticationEntryPointHandler)
                .and()
                // 配置登錄地址
                .formLogin()
                .loginProcessingUrl("/login/userLogin")
                // 配置登錄成功自定義處理類
                .successHandler(userLoginSuccessHandler)
                // 配置登錄失敗自定義處理類
                .failureHandler(userLoginFailureHandler)
                .and()
                // 配置登出地址
                .logout()
                .logoutUrl("/login/userLogout")
                // 配置用戶登出自定義處理類
                .logoutSuccessHandler(userLogoutSuccessHandler)
                .and()
                // 配置沒有許可權自定義處理類
                .exceptionHandling().accessDeniedHandler(userAuthAccessDeniedHandler)
                .and()
                // 開啟跨域
                .cors()
                .and()
                // 取消跨站請求偽造防護
                .csrf().disable();
        // 基於Token不需要session
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        // 禁用快取
        http.headers().cacheControl();
        // 添加JWT過濾器
        http.addFilter(new JWTAuthenticationTokenFilter(authenticationManager()));
    }
}

三、編寫JWTConfig和application.yml增加jwt相關配置

package com.springcloud.blog.admin.config;
import lombok.Getter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * JWT配置類
 * @Author youcong
 */
@Getter
@Component
@ConfigurationProperties(prefix = "jwt")
public class JWTConfig {
    /**
     * 密鑰KEY
     */
    public static String secret;
    /**
     * TokenKey
     */
    public static String tokenHeader;
    /**
     * Token前綴字元
     */
    public static String tokenPrefix;
    /**
     * 過期時間
     */
    public static Integer expiration;
    /**
     * 不需要認證的介面
     */
    public static String antMatchers;


    public void setSecret(String secret) {
        this.secret = secret;
    }

    public void setTokenHeader(String tokenHeader) {
        this.tokenHeader = tokenHeader;
    }

    public void setTokenPrefix(String tokenPrefix) {
        this.tokenPrefix = tokenPrefix;
    }

    public void setExpiration(Integer expiration) {
        this.expiration = expiration * 1000;
    }

    public void setAntMatchers(String antMatchers) {
        this.antMatchers = antMatchers;
    }


}

application.yml增加如下內容:

# JWT配置
jwt:
  # 密匙KEY
  secret: JWTSecret
  # HeaderKEY
  tokenHeader: Authorization
  # Token前綴字元
  tokenPrefix: challenger-
  # 過期時間 單位秒 1天後過期=86400 7天後過期=604800
  expiration: 86400
  # 配置不需要認證的介面
  antMatchers: /index/**,/login/**,/favicon.ico
  # 有效時間
  validTime: 7

四、編寫過濾器處理類

1.UserLoginSuccessHandler.java

package com.springcloud.blog.admin.security.handler;


import com.springcloud.blog.admin.config.JWTConfig;
import com.springcloud.blog.admin.security.entity.SelfUserEntity;
import com.springcloud.blog.admin.utils.AccessAddressUtil;
import com.springcloud.blog.admin.utils.JWTTokenUtil;
import com.springcloud.blog.admin.utils.RedisUtil;
import com.springcloud.blog.admin.utils.ResultUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

/**
 * @Description 登錄成功處理類
 * @Author youcong
 */
@Component
public class UserLoginSuccessHandler implements AuthenticationSuccessHandler {


    /**
     * 登錄成功返回結果
     * @Author youcong
     */
    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication){
        // 組裝JWT
        SelfUserEntity selfUserEntity =  (SelfUserEntity) authentication.getPrincipal();
        String token = JWTTokenUtil.createAccessToken(selfUserEntity);
        token = JWTConfig.tokenPrefix + token;

        // 封裝返回參數
        Map<String,Object> resultData = new HashMap<>();
        resultData.put("code","200");
        resultData.put("msg", "登錄成功");
        resultData.put("token",token);
        ResultUtil.responseJson(response,resultData);
    }
}

2.UserLoginFailureHandler.java

package com.springcloud.blog.admin.security.handler;


import com.springcloud.blog.admin.utils.ResultUtil;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.LockedException;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Description 登錄失敗處理類
 * @Author youcong
 */
@Component
public class UserLoginFailureHandler implements AuthenticationFailureHandler {
    /**
     * 登錄失敗返回結果
     * @Author youcong
     */
    @Override
    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception){
        // 這些對於操作的處理類可以根據不同異常進行不同處理
        if (exception instanceof UsernameNotFoundException){
            System.out.println("【登錄失敗】"+exception.getMessage());
            ResultUtil.responseJson(response,ResultUtil.resultCode(500,"用戶名不存在"));
        }
        if (exception instanceof LockedException){
            System.out.println("【登錄失敗】"+exception.getMessage());
            ResultUtil.responseJson(response,ResultUtil.resultCode(500,"用戶被凍結"));
        }
        if (exception instanceof BadCredentialsException){
            System.out.println("【登錄失敗】"+exception.getMessage());
            ResultUtil.responseJson(response,ResultUtil.resultCode(500,"密碼錯誤"));
        }
        ResultUtil.responseJson(response,ResultUtil.resultCode(500,"登錄失敗"));
    }
}

3.UserLogoutSuccessHandler.java

package com.springcloud.blog.admin.security.handler;


import com.springcloud.blog.admin.utils.DateUtil;
import com.springcloud.blog.admin.utils.RedisUtil;
import com.springcloud.blog.admin.utils.ResultUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

/**
 * 登出成功處理類
 * @Author youcong
 */
@Component
public class UserLogoutSuccessHandler implements LogoutSuccessHandler {
    

    /**
     * 用戶登出返回結果
     * 這裡應該讓前端清除掉Token
     * @Author youcong
     */
    @Override
    public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication){

        Map<String,Object> resultData = new HashMap<>();
        resultData.put("code","200");
        resultData.put("msg", "登出成功");
        SecurityContextHolder.clearContext();
        ResultUtil.responseJson(response,ResultUtil.resultSuccess(resultData));
    }
}

4.UserAuthAccessDeniedHandler.java

package com.springcloud.blog.admin.security.handler;
import com.springcloud.blog.admin.utils.ResultUtil;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.stereotype.Component;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Description 暫無許可權處理類
 * @Author youcong
 */
@Component
public class UserAuthAccessDeniedHandler implements AccessDeniedHandler {
    /**
     * 暫無許可權返回結果
     * @Author youcong
     */
    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException exception){
        ResultUtil.responseJson(response,ResultUtil.resultCode(403,"未授權"));
    }
}

5.UserAuthenticationEntryPointHandler.java

package com.springcloud.blog.admin.security.handler;


import com.springcloud.blog.admin.utils.ResultUtil;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.stereotype.Component;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 用戶未登錄處理類
 * @Author youcong
 */
@Component
public class UserAuthenticationEntryPointHandler implements AuthenticationEntryPoint {
    /**
     * 用戶未登錄返回結果
     * @Author youcong
     */
    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception){
        ResultUtil.responseJson(response,ResultUtil.resultCode(401,"未登錄"));
    }
}

6.UserAuthenticationProvider.java

自定義登錄驗證這個類，需要根據實際情況重寫。通常來說改動不大。

package com.springcloud.blog.admin.security;

import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.springcloud.blog.admin.entity.Usermeta;
import com.springcloud.blog.admin.entity.Users;
import com.springcloud.blog.admin.security.entity.SelfUserEntity;
import com.springcloud.blog.admin.service.UsermetaService;
import com.springcloud.blog.admin.service.UsersService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.LockedException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Component;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * 自定義登錄驗證
 *
 * @Author youcong
 */
@Component
public class UserAuthenticationProvider implements AuthenticationProvider {


    @Autowired
    private UsersService usersService;

    @Autowired
    private UsermetaService usermetaService;

    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        // 獲取表單輸入中返回的用戶名
        String userName = (String) authentication.getPrincipal();
        // 獲取表單中輸入的密碼
        String password = (String) authentication.getCredentials();
        // 查詢用戶是否存在
         SelfUserEntity userInfo = usersService.getUserInfo(userName);


        if (userInfo.getUsername() == null || userInfo.getUsername() == "") {
            throw new UsernameNotFoundException("用戶名不存在");
        }


        // 我們還要判斷密碼是否正確，這裡我們的密碼使用BCryptPasswordEncoder進行加密的
        if (!new BCryptPasswordEncoder().matches(password, userInfo.getPassword())) {
            throw new BadCredentialsException("密碼不正確");
        }
        // 還可以加一些其他資訊的判斷，比如用戶帳號已停用等判斷
        if (userInfo.getStatus().equals("1")) {
            throw new LockedException("該用戶已被凍結");
        }
        // 角色集合
        Set<GrantedAuthority> authorities = new HashSet<>();

        EntityWrapper<Usermeta> roleWrapper = new EntityWrapper<>();
        roleWrapper.eq("user_id",userInfo.getUserId());
        roleWrapper.eq("meta_key","wp_user_level");
        // 查詢用戶角色
        List<Usermeta> sysRoleEntityList = usermetaService.selectList(roleWrapper);
        for (Usermeta sysRoleEntity: sysRoleEntityList){
            authorities.add(new SimpleGrantedAuthority("ROLE_" + sysRoleEntity.getMetaValue()));
        }
        userInfo.setAuthorities(authorities);
        // 進行登錄
        return new UsernamePasswordAuthenticationToken(userInfo, password, authorities);
    }

    @Override
    public boolean supports(Class<?> authentication) {
        return true;
    }
}

7.UserPermissionEvaluator.java

package com.springcloud.blog.admin.security;


import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.springcloud.blog.admin.entity.Usermeta;
import com.springcloud.blog.admin.service.UsermetaService;
import org.apache.catalina.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.PermissionEvaluator;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import java.io.Serializable;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * 自定義許可權註解驗證
 * @Author youcong
 */
@Component
public class UserPermissionEvaluator implements PermissionEvaluator {

    @Autowired
    private UsermetaService usermetaService;

    /**
     * hasPermission鑒權方法
     * 這裡僅僅判斷PreAuthorize註解中的許可權表達式
     * 實際中可以根據業務需求設計資料庫通過targetUrl和permission做更複雜鑒權
     * 當然targetUrl不一定是URL可以是數據Id還可以是管理員標識等,這裡根據需求自行設計
     * @Author youcong
     * @Param  authentication  用戶身份(在使用hasPermission表達式時Authentication參數默認會自動帶上)
     * @Param  targetUrl  請求路徑
     * @Param  permission 請求路徑許可權
     * @Return boolean 是否通過
     */
    @Override
    public boolean hasPermission(Authentication authentication, Object targetUrl, Object permission) {
        // 獲取用戶資訊
        Usermeta selfUserEntity =(Usermeta) authentication.getPrincipal();
        // 查詢用戶許可權(這裡可以將許可權放入快取中提升效率)
        Set<String> permissions = new HashSet<>();
        EntityWrapper<Usermeta> roleWrapper = new EntityWrapper<>();
        roleWrapper.eq("user_id",selfUserEntity.getUserId());
        roleWrapper.eq("meta_key","wp_user_level");
        List<Usermeta> sysMenuEntityList = usermetaService.selectList(roleWrapper);
        for (Usermeta sysMenuEntity:sysMenuEntityList) {
            permissions.add(sysMenuEntity.getMetaValue());
        }
        // 許可權對比
        if (permissions.contains(permission.toString())){
            return true;
        }
        return true;
    }
    @Override
    public boolean hasPermission(Authentication authentication, Serializable targetId, String targetType, Object permission) {
        return false;
    }
}

五、編寫實體類

package com.springcloud.blog.admin.security.entity;

import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.io.Serializable;
import java.util.Collection;
import java.util.Map;

/**
 * SpringSecurity用戶的實體
 * 注意:這裡必須要實現UserDetails介面
 *
 * @Author youcong
 */
public class SelfUserEntity implements Serializable, UserDetails {

    private static final long serialVersionUID = 1L;

    /**
     * 用戶ID
     */
    private Long userId;
    /**
     * 用戶名
     */
    private String username;
    /**
     * 密碼
     */
    private String password;
    /**
     * 狀態
     */
    private String status;


    /**
     * 顯示名稱
     */
    private String displayName;


    /**
     * 用戶參數
     */
    private Map<String, String> userParamMap;


    /**
     * 用戶角色
     */
    private Collection<GrantedAuthority> authorities;
    /**
     * 賬戶是否過期
     */
    private boolean isAccountNonExpired = false;
    /**
     * 賬戶是否被鎖定
     */
    private boolean isAccountNonLocked = false;
    /**
     * 證書是否過期
     */
    private boolean isCredentialsNonExpired = false;
    /**
     * 賬戶是否有效
     */
    private boolean isEnabled = true;


    public static long getSerialVersionUID() {
        return serialVersionUID;
    }

    public Long getUserId() {
        return userId;
    }

    public void setUserId(Long userId) {
        this.userId = userId;
    }

    @Override
    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    @Override
    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }


    public void setAuthorities(Collection<GrantedAuthority> authorities) {
        this.authorities = authorities;
    }


    public void setEnabled(boolean enabled) {
        isEnabled = enabled;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getStatus() {
        return status;
    }

    public String getDisplayName() {
        return displayName;
    }

    public void setDisplayName(String displayName) {
        this.displayName = displayName;
    }

    public Map<String, String> getUserParamMap() {
        return userParamMap;
    }

    public void setUserParamMap(Map<String, String> userParamMap) {
        this.userParamMap = userParamMap;
    }

    @Override
    public Collection<GrantedAuthority> getAuthorities() {
        return authorities;
    }

    @Override
    public boolean isAccountNonExpired() {
        return isAccountNonExpired;
    }

    @Override
    public boolean isAccountNonLocked() {
        return isAccountNonLocked;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return isCredentialsNonExpired;
    }

    @Override
    public boolean isEnabled() {
        return isEnabled;
    }


}

六、編寫JWT介面請求攔截器

package com.springcloud.blog.admin.security.jwt;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.springcloud.blog.admin.config.JWTConfig;
import com.springcloud.blog.admin.security.entity.SelfUserEntity;
import com.springcloud.blog.admin.utils.CollectionUtil;
import com.springcloud.blog.admin.utils.JWTTokenUtil;
import com.springcloud.blog.admin.utils.RedisUtil;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.ExpiredJwtException;
import io.jsonwebtoken.Jwts;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;
import org.springframework.util.StringUtils;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * JWT介面請求校驗攔截器
 * 請求介面時會進入這裡驗證Token是否合法和過期
 *
 * @Author youcong
 */
public class JWTAuthenticationTokenFilter extends BasicAuthenticationFilter {

    public JWTAuthenticationTokenFilter(AuthenticationManager authenticationManager) {
        super(authenticationManager);
    }

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
        // 獲取請求頭中JWT的Token
        String tokenHeader = request.getHeader(JWTConfig.tokenHeader);

        if (null != tokenHeader && tokenHeader.startsWith(JWTConfig.tokenPrefix)) {
            try {


                // 截取JWT前綴
                String token = tokenHeader.replace(JWTConfig.tokenPrefix, "");
                // 解析JWT
                Claims claims = Jwts.parser()
                        .setSigningKey(JWTConfig.secret)
                        .parseClaimsJws(token)
                        .getBody();
                // 獲取用戶名
                String username = claims.getSubject();
                String userId = claims.getId();


                if (!StringUtils.isEmpty(username) && !StringUtils.isEmpty(userId)) {
                    // 獲取角色
                    List<GrantedAuthority> authorities = new ArrayList<>();
                    String authority = claims.get("authorities").toString();
                    if (!StringUtils.isEmpty(authority)) {
                        List<Map<String, String>> authorityMap = JSONObject.parseObject(authority, List.class);
                        for (Map<String, String> role : authorityMap) {
                            if (!StringUtils.isEmpty(role)) {
                                authorities.add(new SimpleGrantedAuthority(role.get("authority")));
                            }
                        }
                    }
                    //組裝參數
                    SelfUserEntity selfUserEntity = new SelfUserEntity();
                    selfUserEntity.setUsername(claims.getSubject());
                    selfUserEntity.setUserId(Long.parseLong(claims.getId()));
                    selfUserEntity.setAuthorities(authorities);
                    UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(selfUserEntity, userId, authorities);
                    SecurityContextHolder.getContext().setAuthentication(authentication);
                }
            } catch (ExpiredJwtException e) {
                System.out.println("Token過期");
            } catch (Exception e) {
                System.out.println("Token無效");
            }
        }
        filterChain.doFilter(request, response);
        return;
    }
}

七、SpringSecurity用戶的業務實現

package com.springcloud.blog.admin.security.service;


import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.springcloud.blog.admin.entity.Users;
import com.springcloud.blog.admin.security.entity.SelfUserEntity;
import com.springcloud.blog.admin.service.UsersService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

/**
 * SpringSecurity用戶的業務實現
 *
 * @Author youcong
 */
@Component
public class SelfUserDetailsService implements UserDetailsService {

    @Autowired
    private UsersService usersService;

    /**
     * 查詢用戶資訊
     *
     * @Author youcong
     * @Param username  用戶名
     * @Return UserDetails SpringSecurity用戶資訊
     */
    @Override
    public SelfUserEntity loadUserByUsername(String username) throws UsernameNotFoundException {

        EntityWrapper<Users> wrapper = new EntityWrapper<>();


        //郵箱正則表達式
        String expr = "^([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})$";

        //是否為郵箱
        if (username.matches(expr)) {
            wrapper.eq("user_email", username);
        } else {
            wrapper.eq("user_login", username);
        }

        // 查詢用戶資訊
        Users sysUserEntity = usersService.selectOne(wrapper);
        if (sysUserEntity != null) {
            // 組裝參數
            SelfUserEntity selfUserEntity = new SelfUserEntity();
            BeanUtils.copyProperties(sysUserEntity, selfUserEntity);
            return selfUserEntity;
        }
        return null;
    }
}

八、Spring Security常用註解

1.@Secured

當@EnableGlobalMethodSecurity(securedEnabled=true)的時候，@Secured可以使用。

@PostMapping("/helloUser")
@Secured({"ROLE_normal","ROLE_admin"})
public Map<String, Object> initDashboard() {
        Map<String, Object> result = new HashMap<>();
        result.put(ResponseDict.RESPONSE_TITLE_KEY, "儀錶盤初始化");
        result.put(ResponseDict.RESPONSE_DATA_KEY, dashboardService.initDashboard());
        return ResultUtil.resultSuccess(result);
    }

說明：擁有normal或者admin角色的用戶都可以方法helloUser()方法。另外需要注意的是這裡匹配的字元串需要添加前綴「ROLE_「。

2.@PreAuthorize

Spring的 @PreAuthorize/@PostAuthorize 註解更適合方法級的安全,也支援Spring 表達式語言，提供了基於表達式的訪問控制。

當@EnableGlobalMethodSecurity(prePostEnabled=true)的時候，@PreAuthorize可以使用：

@PostMapping("/initDashboard")
@PreAuthorize("hasRole('100')")
public Map<String, Object> initDashboard() {
    Map<String, Object> result = new HashMap<>();
    result.put(ResponseDict.RESPONSE_TITLE_KEY, "儀錶盤初始化");
    result.put(ResponseDict.RESPONSE_DATA_KEY, dashboardService.initDashboard());
    return ResultUtil.resultSuccess(result);
}

3.@PostAuthorize

@PostAuthorize 註解使用並不多，在方法執行後再進行許可權驗證，適合驗證帶有返回值的許可權，Spring EL 提供返回對象能夠在表達式語言中獲取返回的對象returnObject。

當@EnableGlobalMethodSecurity(prePostEnabled=true)的時候，@PostAuthorize可以使用：

@GetMapping("/getUserInfo")
@PostAuthorize(" returnObject!=null &&  returnObject.username == authentication.name")
public User getUserInfo() {
        Object pricipal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        User user;
        if("anonymousUser".equals(pricipal)) {
            user = null;
        }else {
            user = (User) pricipal;
        }
        return user;
}