SpringBoot集成Spring Security+jwt+kaptcha验证(简单实现，可根据实际修改逻辑)

参考文章

【全网最细致】SpringBoot整合Spring Security + JWT实现用户认证

需求

  • 结合jwt实现登录功能，采用自带/login接口
  • 实现权限控制

熟悉下SpringSecurity

SpringSecurity 采用的是责任链的设计模式，是一堆过滤器链的组合，它有一条很长的过滤器链
集成过程中主要重写过滤器、处理器和配置文件
ps：流程图可以去其他博客看

以下是实现过滤器和处理器

  • LogoutSuccessHandler–登出处理器
  • AuthenticationSuccessHandler–登录认证成功处理器
  • AuthenticationFailureHandler–登录认证失败处理器
  • UserDetailsService–接口十分重要，用于从数据库中验证用户名密码
  • AccessDeniedHandler–用户发起无权限访问请求的处理器 PasswordEncoder–密码验证器
  • OncePerRequestFilter–认证一次请求只通过一次filter,而不需要重复执行

集成开始

引入依赖包

SpringSecurity

		<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency>

jwt

		<dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt</artifactId><version>0.9.1</version></dependency>

kaptcha制作验证码

        <dependency><groupId>com.github.penggle</groupId><artifactId>kaptcha</artifactId><version>2.3.2</version></dependency>

另外还有一些工具类，reids等依赖包

数据库准备（简单实现，后续根据实际情况设计结构）

准备
user用户表
role角色表
menu菜单表
role_menu角色菜单关系表
user_role用户角色关系表
在这里插入图片描述

kaptcha验证类

DefaultKaptcha 是验证码配置类
KaptchaTextCreator是验证码生成逻辑类，配置在DefaultKaptcha

@Configuration
public class KaptchaConfig {/*** @Title: CaptchaConfig* @Description: 文字验证码* @Parameters:* @Return*/@Bean(name = "captchaProducer")public DefaultKaptcha getKaptchaBean(){DefaultKaptcha defaultKaptcha = new DefaultKaptcha();Properties properties = new Properties();// 是否有边框 默认为true 我们可以自己设置yes，noproperties.setProperty(KAPTCHA_BORDER, "yes");// 验证码文本字符颜色 默认为Color.BLACKproperties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_COLOR, "black");// 验证码图片宽度 默认为200properties.setProperty(KAPTCHA_IMAGE_WIDTH, "160");// 验证码图片高度 默认为50properties.setProperty(KAPTCHA_IMAGE_HEIGHT, "60");// 验证码文本字符大小 默认为40properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_SIZE, "38");// KAPTCHA_SESSION_KEYproperties.setProperty(KAPTCHA_SESSION_CONFIG_KEY, "kaptchaCode");// 验证码文本字符长度 默认为5properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "4");// 验证码文本字体样式 默认为new Font("Arial", 1, fontSize), new Font("Courier", 1, fontSize)properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_NAMES, "Arial,Courier");// 图片样式 水纹com.google.code.kaptcha.impl.WaterRipple 鱼眼com.google.code.kaptcha.impl.FishEyeGimpy 阴影com.google.code.kaptcha.impl.ShadowGimpyproperties.setProperty(KAPTCHA_OBSCURIFICATOR_IMPL, "com.google.code.kaptcha.impl.ShadowGimpy");Config config = new Config(properties);defaultKaptcha.setConfig(config);return defaultKaptcha;}/*** @Title: CaptchaConfig* @Description: 加法验证码* @Parameters:* @Return*/@Bean(name = "captchaProducerMath")public DefaultKaptcha getKaptchaBeanMath(){DefaultKaptcha defaultKaptcha = new DefaultKaptcha();Properties properties = new Properties();// 是否有边框 默认为true 我们可以自己设置yes，noproperties.setProperty(KAPTCHA_BORDER, "yes");// 边框颜色 默认为Color.BLACKproperties.setProperty(KAPTCHA_BORDER_COLOR, "105,179,90");// 验证码文本字符颜色 默认为Color.BLACKproperties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_COLOR, "blue");// 验证码图片宽度 默认为200properties.setProperty(KAPTCHA_IMAGE_WIDTH, "160");// 验证码图片高度 默认为50properties.setProperty(KAPTCHA_IMAGE_HEIGHT, "60");// 验证码文本字符大小 默认为40properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_SIZE, "35");// KAPTCHA_SESSION_KEYproperties.setProperty(KAPTCHA_SESSION_CONFIG_KEY, "kaptchaCodeMath");// 验证码文本生成器properties.setProperty(KAPTCHA_TEXTPRODUCER_IMPL, "com.gpd.security.config.KaptchaTextCreator");// 验证码文本字符间距 默认为2properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_SPACE, "3");// 验证码文本字符长度 默认为5properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "6");// 验证码文本字体样式 默认为new Font("Arial", 1, fontSize), new Font("Courier", 1, fontSize)properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_NAMES, "Arial,Courier");// 验证码噪点颜色 默认为Color.BLACKproperties.setProperty(KAPTCHA_NOISE_COLOR, "white");// 干扰实现类properties.setProperty(KAPTCHA_NOISE_IMPL, "com.google.code.kaptcha.impl.NoNoise");// 图片样式 水纹com.google.code.kaptcha.impl.WaterRipple 鱼眼com.google.code.kaptcha.impl.FishEyeGimpy 阴影com.google.code.kaptcha.impl.ShadowGimpyproperties.setProperty(KAPTCHA_OBSCURIFICATOR_IMPL, "com.google.code.kaptcha.impl.ShadowGimpy");Config config = new Config(properties);defaultKaptcha.setConfig(config);return defaultKaptcha;}
}

package com.gpd.security.config;
import com.google.code.kaptcha.text.impl.DefaultTextCreator;
import java.util.Random;
public class KaptchaTextCreator extends DefaultTextCreator {private static final String[] CNUMBERS = "0,1,2,3,4,5,6,7,8,9,10".split(",");@Overridepublic String getText() {Integer result = 0;/*** @Title: KaptchaTextCreator* @Description: 生成0-10随机数* @Parameters:* @Return*/Random random = new Random();int x = random.nextInt(10);int y = random.nextInt(10);/*** @Title: KaptchaTextCreator* @Description: StringBuilder 用于字符串拼接,但效率更高* @Parameters:* @Return*/StringBuilder suChinese = new StringBuilder();/*** @Title: KaptchaTextCreator* @Description: 生成0-2随机数,用来生成加减乘除* @Parameters:* @Return*/int randomoperands = (int) Math.round(Math.random() * 2);if (randomoperands == 0){result = x * y;suChinese.append(CNUMBERS[x]);suChinese.append("*");suChinese.append(CNUMBERS[y]);}else if (randomoperands == 1){if (!(x == 0) && y % x == 0){result = y / x;suChinese.append(CNUMBERS[y]);suChinese.append("/");suChinese.append(CNUMBERS[x]);}else{result = x + y;suChinese.append(CNUMBERS[x]);suChinese.append("+");suChinese.append(CNUMBERS[y]);}}else if (randomoperands == 2){if (x >= y){result = x - y;suChinese.append(CNUMBERS[x]);suChinese.append("-");suChinese.append(CNUMBERS[y]);}else{result = y - x;suChinese.append(CNUMBERS[y]);suChinese.append("-");suChinese.append(CNUMBERS[x]);}}else{result = x + y;suChinese.append(CNUMBERS[x]);suChinese.append("+");suChinese.append(CNUMBERS[y]);}suChinese.append("=?@" + result);return suChinese.toString();}
}
获取验证码Controller

有2中验证码返回方式：图片和base64编码，结果是存储在redis上
验证码类型：数字、文字字符串

@Slf4j
@RestController
@RequestMapping("/auth")
@Api(tags = "系统：系统授权接口")
public class AuthenticationController {@Resource(name = "captchaProducer")private Producer captchaProducer;@Resource(name = "captchaProducerMath")private Producer captchaProducerMath;// 验证码类型@Value("${kaptche.captchaType}")private String captchaType;// 验证码有效时间@Value("${kaptche.expiration}")private Long captchaExpiration;@Autowiredprivate RedisUtils redisUtil;@ApiOperation("获取验证码")@GetMapping(value = "/captcha")public ResponseEntity Captcha() throws IOException {String code = null;BufferedImage image = null;// 生成验证码Map<String, Object> bufferedImage = getBufferedImage(captchaType);image = (BufferedImage) bufferedImage.get("image");code = (String) bufferedImage.get("code");// 转换流信息写出FastByteArrayOutputStream os = new FastByteArrayOutputStream();ImageIO.write(image, "jpg", os);String str = "data:image/jpeg;base64,";String base64Img = str + Base64.encode(os.toByteArray());String key = UUID.randomUUID().toString();Map<Object, Object> result = MapUtil.builder().put("userKey", key).put("captcherImg", base64Img).build();redisUtil.set("captcha:"+key, code, captchaExpiration);return new ResponseEntity(result, HttpStatus.OK);}@ApiOperation("获取验证码图片")@GetMapping("/getCaptImg")public void getCaptImg(HttpServletResponse response, HttpSession session) throws IOException {String code = null;BufferedImage image = null;// 生成验证码Map<String, Object> bufferedImage = getBufferedImage(captchaType);image = (BufferedImage)bufferedImage.get("image");code = (String) bufferedImage.get("code");response.setContentType("image/png");OutputStream os = response.getOutputStream();ImageIO.write(image,"png",os);}private Map<String, Object> getBufferedImage(String captchaType) {String capStr = null, code = null;BufferedImage image = null;if ("math".equals(captchaType)) {String capText = captchaProducerMath.createText();capStr = capText.substring(0, capText.lastIndexOf("@"));code = capText.substring(capText.lastIndexOf("@") + 1);image = captchaProducerMath.createImage(capStr);} else if ("char".equals(captchaType)) {capStr = code = captchaProducer.createText();image = captchaProducer.createImage(capStr);}Map<String, Object> result = new HashMap<>();result.put("code", code);result.put("image", image);return result;}
}

利用postman调用，返回结果去转码，这个校验步骤不要缺，因为有可能生成的base64不能用
在这里插入图片描述

准备一个jwt工具类

有3个功能：生成jwt、解析jwt、判断jwt是否过期
jwt配置

jwt:header: Authorization# 密钥secret: mySecret# token 过期时间/毫秒，6小时  1小时 = 3600000 毫秒expiration: 21600000# 在线用户keyonline: online-token# 验证码codeKey: code-key

import com.gpd.security.model.JwtUser;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Clock;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import io.jsonwebtoken.impl.DefaultClock;
import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import java.util.Date;
import java.util.Map;
import java.util.UUID;
import java.util.function.Function;@Data
@Component
public class JwtUtils implements Serializable {@Value("${jwt.secret}")private String secret; // @Value("${jwt.expiration}")private Long expiration;@Value("${jwt.header}")private String tokenHeader;private Clock clock = DefaultClock.INSTANCE;/***创建token* @return*/public String generateToken(Map<String, Object> claims, String subject) {return Jwts.builder()//链式编程 添加头.setHeaderParam("typ","JWT").setHeaderParam("alg","HS512")//payload 载荷.setClaims(claims)//主题.setSubject(subject)//有效期.setExpiration(new Date(clock.now().getTime() + expiration))//设置id.setId(UUID.randomUUID().toString())//signature签名.signWith(SignatureAlgorithm.HS512, secret)//拼接前面三个.compact();}public String generateToken(String username) {Date nowDate = new Date();return Jwts.builder().setHeaderParam("typ", "JWT").setSubject(username).setIssuedAt(nowDate).setExpiration(new Date(clock.now().getTime() + expiration)).signWith(SignatureAlgorithm.HS512, secret).compact();}/*** 校验token* @return*/public Boolean validateToken(String token,UserDetails userDetails){JwtUser user = (JwtUser) userDetails;final Date created = getIssuedAtDateFromToken(token);return (!isTokenExpired(token)&& !isCreatedBeforeLastPasswordReset(created, user.getLastPasswordResetDate()));}/*** 获取token* @param request* @return*/public String getToken(HttpServletRequest request){final String requestHeader = request.getHeader(tokenHeader);if (requestHeader != null && requestHeader.startsWith("Bearer ")) {return requestHeader.substring(7);}return null;}// 判断JWT是否过期public boolean isTokenExpired(Claims claims) {return claims.getExpiration().before(new Date());}private Date getIssuedAtDateFromToken(String token) {return getClaimFromToken(token, Claims::getIssuedAt);}private <T> T getClaimFromToken(String token, Function<Claims, T> claimsResolver) {final Claims claims = getAllClaimsFromToken(token);return claimsResolver.apply(claims);}public  Claims getAllClaimsFromToken(String token) {return Jwts.parser().setSigningKey(secret).parseClaimsJws(token).getBody();}private Boolean isTokenExpired(String token) {final Date expiration = getExpirationDateFromToken(token);return expiration.before(clock.now());}private Date getExpirationDateFromToken(String token) {return getClaimFromToken(token, Claims::getExpiration);}private Boolean isCreatedBeforeLastPasswordReset(Date created, Date lastPasswordReset) {return (lastPasswordReset != null && created.before(lastPasswordReset));}
}

统一封装结果Result

我是采用了org.springframework.http自带的ResponseEntity，更简易自己封装一个更好的。以下的代码是用了ResponseEntity来封装结果。
这个是参考的Result统一类

import lombok.Data;
import java.io.Serializable;
@Data
public class Result implements Serializable {private int code;private String msg;private Object data;public static Result succ(Object data) {return succ(200, "操作成功", data);}public static Result fail(String msg) {return fail(400, msg, null);}public static Result succ (int code, String msg, Object data) {Result result = new Result();result.setCode(code);result.setMsg(msg);result.setData(data);return result;}public static Result fail (int code, String msg, Object data) {Result result = new Result();result.setCode(code);result.setMsg(msg);result.setData(data);return result;}
}

写登录认证成功、失败处理器LoginSuccessHandler、LoginFailureHandler

自定义一个验证码错误异常
public class CaptchaException extends AuthenticationException {public CaptchaException(String msg) {super(msg);}
}
LoginSuccessHandler 登录成功处理逻辑

onAuthenticationSuccess是登录成功后：更新用户最后登录时间和把用户登录信息写入redis
OnlineUser是独立出来的线上用户实体类
redisUtils工具类网上很多

/*** 登录成功处理逻辑*/
@Component
public class LoginSuccessHandler implements AuthenticationSuccessHandler {@Autowiredprivate JwtUtils jwtUtils;@Autowiredprivate RedisUtils redisUtils;@Value("${jwt.online}")private String onlineKey;@Value("${jwt.expiration}")private Long expiration;@Autowiredprivate UserMapper userMapper;@Overridepublic void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, FilterChain chain, Authentication authentication) throws IOException, ServletException {AuthenticationSuccessHandler.super.onAuthenticationSuccess(request, response, chain, authentication);}@Overridepublic void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {httpServletResponse.setContentType("application/json;charset=UTF-8");ServletOutputStream outputStream = httpServletResponse.getOutputStream();// 生成JWT，并放置到请求头中Map<String, Object> claims = new HashMap<>();AccountUser accountUser = (AccountUser) authentication.getPrincipal();String subject = accountUser.getUsername();Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();claims.put("username", subject);claims.put("id", accountUser.getUserId());claims.put("permissionsJson", JsonUtils.objectToJson(authorities));String jwt = jwtUtils.generateToken(claims, subject);User user = new User();user.setId(accountUser.getUserId());user.setLastPasswordResetTime(new Date());userMapper.updateById(user);redisUtils.set(onlineKey + ":" + subject, saveOnlineUser(subject, jwt), TimeUnit.MILLISECONDS, expiration);httpServletResponse.setHeader(jwtUtils.getTokenHeader(), jwt);ResponseEntity responseEntity = new ResponseEntity("SuccessLogin", HttpStatus.OK);outputStream.write(JsonUtils.objectToJson(responseEntity).getBytes(StandardCharsets.UTF_8));outputStream.flush();outputStream.close();}private OnlineUser saveOnlineUser(String username, String jwt) {OnlineUser onlineUser = new OnlineUser();onlineUser.setUserName(username);onlineUser.setToken(jwt);return onlineUser;}
}
LoginFailureHandler 登录失败处理逻辑
/*** 登录失败处理逻辑*/
@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {@Overridepublic void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse httpServletResponse, AuthenticationException exception) throws IOException, ServletException {httpServletResponse.setContentType("application/json;charset=UTF-8");ServletOutputStream outputStream = httpServletResponse.getOutputStream();String errorMessage = "用户名或密码错误";ResponseEntity responseEntity;if (exception instanceof CaptchaException) {errorMessage = "验证码错误";responseEntity = new ResponseEntity(errorMessage, HttpStatus.BAD_REQUEST);} else {responseEntity = new ResponseEntity(errorMessage, HttpStatus.BAD_REQUEST);}outputStream.write(JsonUtils.objectToJson(responseEntity).getBytes(StandardCharsets.UTF_8));outputStream.flush();outputStream.close();}
}

JWT认证失败处理器JwtAuthenticationEntryPoint

处理匿名用户访问无权限资源时的异常（即未登录，或者登录状态过期失效）

@Component
public class JwtAuthenticationEntryPoint implements AuthenticationEntryPoint {@Overridepublic void commence(HttpServletRequest request, HttpServletResponse httpServletResponse, AuthenticationException authException) throws IOException, ServletException {httpServletResponse.setContentType("application/json;charset=UTF-8");httpServletResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);ServletOutputStream outputStream = httpServletResponse.getOutputStream();Map<Object, Object> result = MapUtil.builder().put("msg", "请先登录").build();ResponseEntity responseEntity = new ResponseEntity(result, HttpStatus.BAD_REQUEST);outputStream.write(JSONUtil.toJsonStr(responseEntity).getBytes(StandardCharsets.UTF_8));outputStream.flush();outputStream.close();}
}

无权限访问的处理：AccessDenieHandler

@Component
public class JwtAccessDeniedHandler implements AccessDeniedHandler {@Overridepublic void handle(HttpServletRequest request, HttpServletResponse httpServletResponse, AccessDeniedException accessDeniedException) throws IOException, ServletException {httpServletResponse.setContentType("application/json;charset=UTF-8");httpServletResponse.setStatus(HttpServletResponse.SC_FORBIDDEN);ServletOutputStream outputStream = httpServletResponse.getOutputStream();Map<Object, Object> result = MapUtil.builder().put("msg", accessDeniedException.getMessage()).build();ResponseEntity responseEntity = new ResponseEntity(result, HttpStatus.BAD_REQUEST);outputStream.write(JSONUtil.toJsonStr(responseEntity).getBytes(StandardCharsets.UTF_8));outputStream.flush();outputStream.close();}
}

登出处理器LogoutSuccessHandler

@Component
public class JwtLogoutSuccessHandler implements LogoutSuccessHandler {@AutowiredJwtUtils jwtUtils;@Overridepublic void onLogoutSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, ServletException {if (authentication != null) {new SecurityContextLogoutHandler().logout(httpServletRequest, httpServletResponse, authentication);}httpServletResponse.setContentType("application/json;charset=UTF-8");ServletOutputStream outputStream = httpServletResponse.getOutputStream();httpServletResponse.setHeader(jwtUtils.getTokenHeader(), "");Map<Object, Object> dataMap = MapUtil.builder().put("msg","SuccessLogout").build();ResponseEntity responseEntity = new ResponseEntity(dataMap, HttpStatus.BAD_REQUEST);outputStream.write(JSONUtil.toJsonStr(responseEntity).getBytes(StandardCharsets.UTF_8));outputStream.flush();outputStream.close();}
}

密码加密解密：PasswordEncoder

PasswordEncoder 根绝实际的加密情况进行校验

@NoArgsConstructor //生成无参构造方法
public class PasswordEncoder extends BCryptPasswordEncoder {// 密码解密加密校验逻辑@Overridepublic boolean matches(CharSequence rawPassword, String encodedPassword) {// 对前端的密码进行加密再跟数据库密码校验(比较简单 建议采取更好的方案)String pwd =  EncryptUtils.encryptPassword(rawPassword.toString());if (pwd.equals(encodedPassword)){return true;}return false;}
}

实现UserDetailsService

从数据库中验证用户名、密码是否正确这种认证方式

创建实体类实现UserDetails

Spring Security在拿到UserDetails之后，会去对比Authentication，Authentication是表单提交的数据

public class AccountUser implements UserDetails {private Long userId;private static final long serialVersionUID = 540L;private String password;private final String username;private final Collection<? extends GrantedAuthority> authorities;private final boolean accountNonExpired; //账号是否过期private final boolean accountNonLocked; // 账号是否锁定private final boolean credentialsNonExpired; // 密码是否过期private final boolean enabled; // 系统是否启用public AccountUser(Long userId, String username, String password,Collection<? extends GrantedAuthority> authorities) {this(userId, username, password, true, true, true, true,authorities);}public AccountUser(Long userId, String username, String password, boolean enabled, boolean accountNonExpired, boolean credentialsNonExpired, boolean accountNonLocked, Collection<? extends GrantedAuthority> authorities) {Assert.isTrue(username != null && !"".equals(username) && password != null, "Cannot pass null or empty values to constructor");this.userId = userId;this.username = username;this.password = password;this.enabled = enabled;this.accountNonExpired = accountNonExpired;this.credentialsNonExpired = credentialsNonExpired;this.accountNonLocked = accountNonLocked;this.authorities = authorities;}@Overridepublic Collection<? extends GrantedAuthority> getAuthorities() {return this.authorities;}@Overridepublic String getPassword() {return this.password;}@Overridepublic String getUsername() {return this.username;}public Long getUserId() {return this.userId;}@Overridepublic boolean isAccountNonExpired() {return this.accountNonExpired;}@Overridepublic boolean isAccountNonLocked() {return accountNonLocked;}@Overridepublic boolean isCredentialsNonExpired() {return credentialsNonExpired;}@Overridepublic boolean isEnabled() {return enabled;}
}
自定义一个UserService，UserServiceImpl，UserMapper

实现数据库查询用户信息和权限接口，这里配合了mybatis-plus
用户信息和权限是分开查询了，建议重新封装
UserService

public interface UserService {User getByUsername(String userName);List<String> getPermissionsById(Long id);
}

UserServiceImpl

@Service
public class UserServiceImpl implements UserService {@Autowiredprivate UserMapper userMapper;/*** 根据名称获取用户信息* @param userName* @return*/@Overridepublic User getByUsername(String userName) {return userMapper.findByRealname(userName);}/*** 根据id获取用户权限* @param id* @return*/@Overridepublic List<String> getPermissionsById(Long id){return userMapper.getPermissionsById(id);}
}

UserMapper

@Mapper
public interface UserMapper extends BaseMapper<User> {@Select("select * from user where user_name = #{realname}")User findByRealname(String realname);@Select("SELECT DISTINCT m.permission FROM menu m LEFT JOIN role_menu rm ON rm.menu_id=m.id LEFT JOIN user_role ur ON ur.role_id=rm.role_id LEFT JOIN USER u ON u.id=ur.user_id WHERE u.id= #{id}")List<String> getPermissionsById(Long id);
}
实现UserDetailServiceImpl

重写loadUserByUsername，从数据库获取用户信息和权限
这里的权限其实只是一个字符串，比如查询权限（tOrder:list），修改权限（tOrder:update）
设计的权限是菜单的权限，根据用户对应的角色，获取所有菜单权限，前端根据权限展示
当然也可以修改成按角色的权限
菜单权限数据例子
在这里插入图片描述

@Service
public class UserDetailServiceImpl implements UserDetailsService {@Autowiredprivate UserService userService;@Overridepublic UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {User user = userService.getByUsername(username);if (user == null) {throw new UsernameNotFoundException("用户名或密码错误");}// 查询权限List<String> permissions = userService.getPermissionsById(user.getId());List<GrantedAuthority> grantedAuthoritys = new ArrayList<>();if (CollectionUtil.isNotEmpty(permissions)){for (String permission:permissions) {grantedAuthoritys.add(new SimpleGrantedAuthority(permission));}}AccountUser accountUser = new AccountUser(user.getId(), user.getUsername(), user.getPassword(),grantedAuthoritys);return accountUser;}
}

实现了上述几个接口，从数据库中验证用户名、密码的过程将由框架帮我们完成，是封装隐藏了，所以不懂Spring Security的人可能会对登录过程有点懵，不知道是怎么判定用户名密码是否正确的

重写OncePerRequestFilter

认证一次请求只通过一次filter,而不需要重复执行。逻辑是登录接口则校验验证码是否正确，然后删除验证码，其他接口则校验jwt

@Component
public class JwtAuthorizationTokenFilter extends OncePerRequestFilter {@Value("${jwt.online}")private String onlineKey;@AutowiredRedisUtils redisUtils;@AutowiredLoginFailureHandler loginFailureHandler;@Autowiredprivate JwtUtils jwtUtils;@Autowiredprivate UserDetailsService userDetailsService;@Overrideprotected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {String url = request.getRequestURI();// 如果是登录接口，则进行验证码校验if ("/admin-api/login".equals(url) && request.getMethod().equals("POST")) {// 校验验证码try {validate(request);} catch (CaptchaException e) {// 交给认证失败处理器loginFailureHandler.onAuthenticationFailure(request, response, e);}}String jwt = jwtUtils.getToken(request);if (null != jwt){Claims claim = jwtUtils.getAllClaimsFromToken(jwt);if (claim == null) {throw new JwtException("token 异常");}if (jwtUtils.isTokenExpired(claim)) {throw new JwtException("token 已过期");}String username = claim.getSubject(); //用户名称OnlineUser onlineUser = (OnlineUser)redisUtils.get(onlineKey+":"+ username);if (null != onlineUser  && SecurityContextHolder.getContext().getAuthentication() == null){UserDetails userDetails = userDetailsService.loadUserByUsername(username);UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));SecurityContextHolder.getContext().setAuthentication(authentication);}}filterChain.doFilter(request, response);}// 校验验证码逻辑private void validate(HttpServletRequest httpServletRequest) {String code = httpServletRequest.getParameter("code");String key = httpServletRequest.getParameter("userKey");if (StringUtils.isBlank(code) || StringUtils.isBlank(key)) {throw new CaptchaException("验证码错误");}if (!code.equals(redisUtils.get("captcha:"+key))) {throw new CaptchaException("验证码错误");}// 若验证码正确，执行以下语句// 一次性使用redisUtils.remove("captcha:"+key);}}

准备工作完成，配置SecurityConfig

这个配置是结合上面的类写的，设置不拦截登录接口，验证码接口，swagger等接口

@Configuration
@EnableWebSecurity //开启Spring Security的功能
@RequiredArgsConstructor
//prePostEnabled属性决定Spring Security在接口前注解是否可用@PreAuthorize,@PostAuthorize等注解,设置为true,会拦截加了这些注解的接口
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {@AutowiredLoginFailureHandler loginFailureHandler;@AutowiredLoginSuccessHandler loginSuccessHandler;@AutowiredJwtAuthorizationTokenFilter jwtAuthorizationTokenFilter;@AutowiredJwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;@AutowiredJwtAccessDeniedHandler jwtAccessDeniedHandler;@AutowiredUserDetailServiceImpl userDetailService;@AutowiredJwtLogoutSuccessHandler jwtLogoutSuccessHandler;/*** 白名单请求*/private static final String[] URL_WHITELIST = {"/login","/logout","/auth/captcha","/swagger-ui/*","/swagger-resources/**","/v3/api-docs"};@BeanPasswordEncoder PasswordEncoder() {return new PasswordEncoder();}@Overrideprotected void configure(HttpSecurity http) throws Exception {http// 支持跨域.cors().and()// CRSF禁用，因为不使用session 可以预防CRSF攻击.csrf().disable()// 登录配置.formLogin().successHandler(loginSuccessHandler).failureHandler(loginFailureHandler).and().logout().logoutSuccessHandler(jwtLogoutSuccessHandler)// 禁用session.and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)// 配置拦截规则.and().authorizeRequests().antMatchers(URL_WHITELIST).permitAll().anyRequest().authenticated() // 其余请求都需要过滤// 异常处理器.and().exceptionHandling().authenticationEntryPoint(jwtAuthenticationEntryPoint).accessDeniedHandler(jwtAccessDeniedHandler);// 配置自定义的过滤器http.addFilterBefore(jwtAuthorizationTokenFilter, UsernamePasswordAuthenticationFilter.class);}@Overrideprotected void configure(AuthenticationManagerBuilder auth) throws Exception {auth.userDetailsService(userDetailService);}}

测试登录

目前2个用户数据
admin 所有权限
pedro 没有权限
在这里插入图片描述
从头部获取token
在这里插入图片描述
测试一个查询接口，设置了权限，admin账号是有全部权限

@Slf4j
@RestController
@RequestMapping("/api/tOrder")
@Api(value = "订单模块")
public class TOrderController {@ApiOperation(value = "查询订单接口")@PreAuthorize("@pe.check('tOrder:list')")@GetMappingpublic ResponseEntity queryOrder(){log.info("查询订单接口");Map<String,Object> result = new HashMap<>();result.put("1",1);return new ResponseEntity(result, HttpStatus.OK);}
}

在这里插入图片描述
测试用过，然后测试没有权限的pedro用户
在这里插入图片描述

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