springsecurity项目快速搭建

自定义security的搭建

package com.sangeng.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class CorsConfig implements WebMvcConfigurer {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
      // 设置允许跨域的路径
        registry.addMapping("/**")
                // 设置允许跨域请求的域名
                .allowedOriginPatterns("*")
                // 是否允许cookie
                .allowCredentials(true)
                // 设置允许的请求方式
                .allowedMethods("GET", "POST", "DELETE", "PUT")
                // 设置允许的header属性
                .allowedHeaders("*")
                // 跨域允许时间
                .maxAge(3600);
    }
}

package com.sangeng.config;

import com.sangeng.utils.FastJsonRedisSerializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig {

    @Bean
    @SuppressWarnings(value = { "unchecked", "rawtypes" })
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory connectionFactory)
    {
        RedisTemplate<Object, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(connectionFactory);

        FastJsonRedisSerializer serializer = new FastJsonRedisSerializer(Object.class);

        // 使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(serializer);

        // Hash的key也采用StringRedisSerializer的序列化方式
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(serializer);

        template.afterPropertiesSet();
        return template;
    }
}

package com.sangeng.config;

import com.sangeng.filter.JwtAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    //创建BCryptPasswordEncoder注入容器
    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }
    @Autowired
    private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;


    @Autowired
    private AuthenticationEntryPoint authenticationEntryPoint;

    @Autowired
    private AccessDeniedHandler accessDeniedHandler;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf
                .csrf().disable()
                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                // 对于登录接口 允许匿名访问
                .antMatchers("/user/login").anonymous()
//                .antMatchers("/testCors").hasAuthority("system:dept:list222")
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();

        //添加过滤器
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);

        //配置异常处理器
        http.exceptionHandling()
                //配置认证失败处理器
                .authenticationEntryPoint(authenticationEntryPoint)
                .accessDeniedHandler(accessDeniedHandler);

        //允许跨域

    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}

package com.sangeng.controller;

import com.sangeng.domain.ResponseResult;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @RequestMapping("/hello")
    @PreAuthorize("@ex.hasAuthority('system:dept:list')")
//    @PreAuthorize("hasAnyAuthority('admin','test','system:dept:list')")
//    @PreAuthorize("hasRole('system:dept:list')")
//    @PreAuthorize("hasAnyRole('admin','system:dept:list')")
    public String hello(){
        return "hello";
    }

    @RequestMapping("/testCors")
    public ResponseResult testCors(){
        return new ResponseResult(200,"testCors");
    }
}

package com.sangeng.controller;

import com.sangeng.domain.ResponseResult;
import com.sangeng.domain.User;
import com.sangeng.service.LoginServcie;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class LoginController {

    @Autowired
    private LoginServcie loginServcie;

    @PostMapping("/user/login")
    public ResponseResult login(@RequestBody User user){
        //登录
        return loginServcie.login(user);
    }

    @RequestMapping("/user/logout")
    public ResponseResult logout(){
        return loginServcie.logout();
    }
}

package com.sangeng.domain;

import com.alibaba.fastjson.annotation.JSONField;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;

@Data
@NoArgsConstructor
public class LoginUser implements UserDetails {

    private User user;

    private List<String> permissions;

    public LoginUser(User user, List<String> permissions) {
        this.user = user;
        this.permissions = permissions;
    }
    @JSONField(serialize = false)
    private List<SimpleGrantedAuthority> authorities;
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        if(authorities!=null){
            return authorities;
        }
        //把permissions中String类型的权限信息封装成SimpleGrantedAuthority对象
//       authorities = new ArrayList<>();
//        for (String permission : permissions) {
//            SimpleGrantedAuthority authority = new SimpleGrantedAuthority(permission);
//            authorities.add(authority);
//        }
        authorities = permissions.stream()
                .map(SimpleGrantedAuthority::new)
                .collect(Collectors.toList());
        return authorities;
    }

    @Override
    public String getPassword() {
        return user.getPassword();
    }

    @Override
    public String getUsername() {
        return user.getUserName();
    }

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

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

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

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

package com.sangeng.domain;

import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import com.fasterxml.jackson.annotation.JsonInclude;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;
import java.util.Date;

/**
 * 菜单表(Menu)实体类
 *
 * @author makejava
 * @since 2021-11-24 15:30:08
 */
@TableName(value="sys_menu")
@Data
@AllArgsConstructor
@NoArgsConstructor
@JsonInclude(JsonInclude.Include.NON_NULL)
public class Menu implements Serializable {
    private static final long serialVersionUID = -54979041104113736L;
    
    @TableId
    private Long id;
    /**
    * 菜单名
    */
    private String menuName;
    /**
    * 路由地址
    */
    private String path;
    /**
    * 组件路径
    */
    private String component;
    /**
    * 菜单状态（0显示 1隐藏）
    */
    private String visible;
    /**
    * 菜单状态（0正常 1停用）
    */
    private String status;
    /**
    * 权限标识
    */
    private String perms;
    /**
    * 菜单图标
    */
    private String icon;
    
    private Long createBy;
    
    private Date createTime;
    
    private Long updateBy;
    
    private Date updateTime;
    /**
    * 是否删除（0未删除 1已删除）
    */
    private Integer delFlag;
    /**
    * 备注
    */
    private String remark;
}

package com.sangeng.domain;

import com.fasterxml.jackson.annotation.JsonInclude;

/**
 * @Author 三更  B站： https://space.bilibili.com/663528522
 */
@JsonInclude(JsonInclude.Include.NON_NULL)
public class ResponseResult<T> {
    /**
     * 状态码
     */
    private Integer code;
    /**
     * 提示信息，如果有错误时，前端可以获取该字段进行提示
     */
    private String msg;
    /**
     * 查询到的结果数据，
     */
    private T data;

    public ResponseResult(Integer code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public ResponseResult(Integer code, T data) {
        this.code = code;
        this.data = data;
    }

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }

    public ResponseResult(Integer code, String msg, T data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }
}

package com.sangeng.domain;

import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;
import java.util.Date;


/**
 * 用户表(User)实体类
 *
 * @author 三更
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
@TableName("sys_user")
public class User implements Serializable {
    private static final long serialVersionUID = -40356785423868312L;
    
    /**
    * 主键
    */
    @TableId
    private Long id;
    /**
    * 用户名
    */
    private String userName;
    /**
    * 昵称
    */
    private String nickName;
    /**
    * 
    */
    private String password;
    /**
    * 账号状态（0正常 1停用）
    */
    private String status;
    /**
    * 邮箱
    */
    private String email;
    /**
    * 手机号
    */
    private String phonenumber;
    /**
    * 用户性别（0男，1女，2未知）
    */
    private String sex;
    /**
    * 头像
    */
    private String avatar;
    /**
    * 用户类型（0管理员，1普通用户）
    */
    private String userType;
    /**
    * 创建人的用户id
    */
    private Long createBy;
    /**
    * 创建时间
    */
    private Date createTime;
    /**
    * 更新人
    */
    private Long updateBy;
    /**
    * 更新时间
    */
    private Date updateTime;
    /**
    * 删除标志（0代表未删除，1代表已删除）
    */
    private Integer delFlag;
}

package com.sangeng.expression;

import com.sangeng.domain.LoginUser;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;

import java.util.List;

@Component("ex")
public class SGExpressionRoot {

    public boolean hasAuthority(String authority){
        //获取当前用户的权限
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        List<String> permissions = loginUser.getPermissions();
        //判断用户权限集合中是否存在authority
        return permissions.contains(authority);
    }
}

package com.sangeng.filter;

import com.sangeng.domain.LoginUser;
import com.sangeng.utils.JwtUtil;
import com.sangeng.utils.RedisCache;
import io.jsonwebtoken.Claims;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.filter.OncePerRequestFilter;

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.Objects;

@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {

    @Autowired
    private RedisCache redisCache;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
        //获取token
        String token = request.getHeader("token");
        if (!StringUtils.hasText(token)) {
            //放行
//            filterChain.doFilter(request, response);
            return;
        }
        //解析token
        String userid;
        try {
            Claims claims = JwtUtil.parseJWT(token);
            userid = claims.getSubject();
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("token非法");
        }
        //从redis中获取用户信息
        String redisKey = "login:" + userid;
        LoginUser loginUser = redisCache.getCacheObject(redisKey);
        if(Objects.isNull(loginUser)){
            throw new RuntimeException("用户未登录");
        }
        //存入SecurityContextHolder
        //TODO 获取权限信息封装到Authentication中
        UsernamePasswordAuthenticationToken authenticationToken =
                new UsernamePasswordAuthenticationToken(loginUser,null,loginUser.getAuthorities());
        SecurityContextHolder.getContext().setAuthentication(authenticationToken);
        //放行
        filterChain.doFilter(request, response);
    }
}

package com.sangeng.handler;

import com.alibaba.fastjson.JSON;
import com.sangeng.domain.ResponseResult;
import com.sangeng.utils.WebUtils;
import org.springframework.http.HttpStatus;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class AccessDeniedHandlerImpl implements AccessDeniedHandler {
    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException, ServletException {
        ResponseResult result = new ResponseResult(HttpStatus.FORBIDDEN.value(),"您的权限不足");
        String json = JSON.toJSONString(result);
        //处理异常
        WebUtils.renderString(response,json);
    }
}

package com.sangeng.handler;

import com.alibaba.fastjson.JSON;
import com.sangeng.domain.ResponseResult;
import com.sangeng.utils.WebUtils;
import org.springframework.http.HttpStatus;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class AuthenticationEntryPointImpl implements AuthenticationEntryPoint {
    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
        ResponseResult result = new ResponseResult(HttpStatus.UNAUTHORIZED.value(),"用户认证失败请查询登录");
        String json = JSON.toJSONString(result);
        //处理异常
        WebUtils.renderString(response,json);
    }
}

package com.sangeng.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.sangeng.domain.Menu;

import java.util.List;

public interface MenuMapper extends BaseMapper<Menu> {

    List<String> selectPermsByUserId(Long userid);
}

package com.sangeng.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.sangeng.domain.User;

public interface UserMapper extends BaseMapper<User> {
}

package com.sangeng.service.impl;

import com.sangeng.domain.LoginUser;
import com.sangeng.domain.ResponseResult;
import com.sangeng.domain.User;
import com.sangeng.service.LoginServcie;
import com.sangeng.utils.JwtUtil;
import com.sangeng.utils.RedisCache;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

@Service
public class LoginServiceImpl implements LoginServcie {

    @Autowired
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisCache redisCache;

    @Override
    public ResponseResult login(User user) {
        //AuthenticationManager authenticate进行用户认证
        UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(user.getUserName(),user.getPassword());
        Authentication authenticate = authenticationManager.authenticate(authenticationToken);
        //如果认证没通过，给出对应的提示
        if(Objects.isNull(authenticate)){
            throw new RuntimeException("登录失败");
        }
        //如果认证通过了，使用userid生成一个jwt jwt存入ResponseResult返回
        LoginUser loginUser = (LoginUser) authenticate.getPrincipal();
        String userid = loginUser.getUser().getId().toString();
        String jwt = JwtUtil.createJWT(userid);
        Map<String,String> map = new HashMap<>();
        map.put("token",jwt);
        //把完整的用户信息存入redis  userid作为key
        redisCache.setCacheObject("login:"+userid,loginUser);
        return new ResponseResult(200,"登录成功",map);
    }

    @Override
    public ResponseResult logout() {
        //获取SecurityContextHolder中的用户id
        UsernamePasswordAuthenticationToken authentication = (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        Long userid = loginUser.getUser().getId();
        //删除redis中的值
        redisCache.deleteObject("login:"+userid);
        return new ResponseResult(200,"注销成功");
    }
}

package com.sangeng.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.sangeng.domain.LoginUser;
import com.sangeng.domain.User;
import com.sangeng.mapper.MenuMapper;
import com.sangeng.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
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.Service;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;

@Service
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private MenuMapper menuMapper;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

        //查询用户信息
        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(User::getUserName,username);
        User user = userMapper.selectOne(queryWrapper);
        //如果没有查询到用户就抛出异常
        if(Objects.isNull(user)){
            throw new RuntimeException("用户名或者密错误");
        }

//        List<String> list = new ArrayList<>(Arrays.asList("test","admin"));
        List<String> list = menuMapper.selectPermsByUserId(user.getId());
        //把数据封装成UserDetails返回
        return new LoginUser(user,list);
    }
}

package com.sangeng.service;

import com.sangeng.domain.ResponseResult;
import com.sangeng.domain.User;

public interface LoginServcie {
    ResponseResult login(User user);

    ResponseResult logout();

}

package com.sangeng.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
import com.alibaba.fastjson.parser.ParserConfig;
import org.springframework.util.Assert;
import java.nio.charset.Charset;

/**
 * Redis使用FastJson序列化
 * 
 * @author sg
 */
public class FastJsonRedisSerializer<T> implements RedisSerializer<T>
{

    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private Class<T> clazz;

    static
    {
        ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
    }

    public FastJsonRedisSerializer(Class<T> clazz)
    {
        super();
        this.clazz = clazz;
    }

    @Override
    public byte[] serialize(T t) throws SerializationException
    {
        if (t == null)
        {
            return new byte[0];
        }
        return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    @Override
    public T deserialize(byte[] bytes) throws SerializationException
    {
        if (bytes == null || bytes.length <= 0)
        {
            return null;
        }
        String str = new String(bytes, DEFAULT_CHARSET);

        return JSON.parseObject(str, clazz);
    }


    protected JavaType getJavaType(Class<?> clazz)
    {
        return TypeFactory.defaultInstance().constructType(clazz);
    }
}

package com.sangeng.utils;

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;

import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;
import java.util.Date;
import java.util.UUID;

/**
 * JWT工具类
 */
public class JwtUtil {

    //有效期为
    public static final Long JWT_TTL = 60 * 60 *1000L;// 60 * 60 *1000  一个小时
    //设置秘钥明文
    public static final String JWT_KEY = "sangeng";

    public static String getUUID(){
        String token = UUID.randomUUID().toString().replaceAll("-", "");
        return token;
    }
    
    /**
     * 生成jtw
     * @param subject token中要存放的数据（json格式）
     * @return
     */
    public static String createJWT(String subject) {
        JwtBuilder builder = getJwtBuilder(subject, null, getUUID());// 设置过期时间
        return builder.compact();
    }

    /**
     * 生成jtw
     * @param subject token中要存放的数据（json格式）
     * @param ttlMillis token超时时间
     * @return
     */
    public static String createJWT(String subject, Long ttlMillis) {
        JwtBuilder builder = getJwtBuilder(subject, ttlMillis, getUUID());// 设置过期时间
        return builder.compact();
    }

    private static JwtBuilder getJwtBuilder(String subject, Long ttlMillis, String uuid) {
        SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
        SecretKey secretKey = generalKey();
        long nowMillis = System.currentTimeMillis();
        Date now = new Date(nowMillis);
        if(ttlMillis==null){
            ttlMillis=JwtUtil.JWT_TTL;
        }
        long expMillis = nowMillis + ttlMillis;
        Date expDate = new Date(expMillis);
        return Jwts.builder()
                .setId(uuid)              //唯一的ID
                .setSubject(subject)   // 主题  可以是JSON数据
                .setIssuer("sg")     // 签发者
                .setIssuedAt(now)      // 签发时间
                .signWith(signatureAlgorithm, secretKey) //使用HS256对称加密算法签名, 第二个参数为秘钥
                .setExpiration(expDate);
    }

    /**
     * 创建token
     * @param id
     * @param subject
     * @param ttlMillis
     * @return
     */
    public static String createJWT(String id, String subject, Long ttlMillis) {
        JwtBuilder builder = getJwtBuilder(subject, ttlMillis, id);// 设置过期时间
        return builder.compact();
    }

    public static void main(String[] args) throws Exception {
//        String jwt = createJWT("2123");
        Claims claims = parseJWT("eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiIyOTY2ZGE3NGYyZGM0ZDAxOGU1OWYwNjBkYmZkMjZhMSIsInN1YiI6IjIiLCJpc3MiOiJzZyIsImlhdCI6MTYzOTk2MjU1MCwiZXhwIjoxNjM5OTY2MTUwfQ.NluqZnyJ0gHz-2wBIari2r3XpPp06UMn4JS2sWHILs0");
        String subject = claims.getSubject();
        System.out.println(subject);
//        System.out.println(claims);
    }

    /**
     * 生成加密后的秘钥 secretKey
     * @return
     */
    public static SecretKey generalKey() {
        byte[] encodedKey = Base64.getDecoder().decode(JwtUtil.JWT_KEY);
        SecretKey key = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES");
        return key;
    }
    
    /**
     * 解析
     *
     * @param jwt
     * @return
     * @throws Exception
     */
    public static Claims parseJWT(String jwt) throws Exception {
        SecretKey secretKey = generalKey();
        return Jwts.parser()
                .setSigningKey(secretKey)
                .parseClaimsJws(jwt)
                .getBody();
    }


}

package com.sangeng.utils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.BoundSetOperations;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Component;

import java.util.*;
import java.util.concurrent.TimeUnit;

@SuppressWarnings(value = { "unchecked", "rawtypes" })
@Component
public class RedisCache
{
    @Autowired
    public RedisTemplate redisTemplate;

    /**
     * 缓存基本的对象，Integer、String、实体类等
     *
     * @param key 缓存的键值
     * @param value 缓存的值
     */
    public <T> void setCacheObject(final String key, final T value)
    {
        redisTemplate.opsForValue().set(key, value);
    }

    /**
     * 缓存基本的对象，Integer、String、实体类等
     *
     * @param key 缓存的键值
     * @param value 缓存的值
     * @param timeout 时间
     * @param timeUnit 时间颗粒度
     */
    public <T> void setCacheObject(final String key, final T value, final Integer timeout, final TimeUnit timeUnit)
    {
        redisTemplate.opsForValue().set(key, value, timeout, timeUnit);
    }

    /**
     * 设置有效时间
     *
     * @param key Redis键
     * @param timeout 超时时间
     * @return true=设置成功；false=设置失败
     */
    public boolean expire(final String key, final long timeout)
    {
        return expire(key, timeout, TimeUnit.SECONDS);
    }

    /**
     * 设置有效时间
     *
     * @param key Redis键
     * @param timeout 超时时间
     * @param unit 时间单位
     * @return true=设置成功；false=设置失败
     */
    public boolean expire(final String key, final long timeout, final TimeUnit unit)
    {
        return redisTemplate.expire(key, timeout, unit);
    }

    /**
     * 获得缓存的基本对象。
     *
     * @param key 缓存键值
     * @return 缓存键值对应的数据
     */
    public <T> T getCacheObject(final String key)
    {
        ValueOperations<String, T> operation = redisTemplate.opsForValue();
        return operation.get(key);
    }

    /**
     * 删除单个对象
     *
     * @param key
     */
    public boolean deleteObject(final String key)
    {
        return redisTemplate.delete(key);
    }

    /**
     * 删除集合对象
     *
     * @param collection 多个对象
     * @return
     */
    public long deleteObject(final Collection collection)
    {
        return redisTemplate.delete(collection);
    }

    /**
     * 缓存List数据
     *
     * @param key 缓存的键值
     * @param dataList 待缓存的List数据
     * @return 缓存的对象
     */
    public <T> long setCacheList(final String key, final List<T> dataList)
    {
        Long count = redisTemplate.opsForList().rightPushAll(key, dataList);
        return count == null ? 0 : count;
    }

    /**
     * 获得缓存的list对象
     *
     * @param key 缓存的键值
     * @return 缓存键值对应的数据
     */
    public <T> List<T> getCacheList(final String key)
    {
        return redisTemplate.opsForList().range(key, 0, -1);
    }

    /**
     * 缓存Set
     *
     * @param key 缓存键值
     * @param dataSet 缓存的数据
     * @return 缓存数据的对象
     */
    public <T> BoundSetOperations<String, T> setCacheSet(final String key, final Set<T> dataSet)
    {
        BoundSetOperations<String, T> setOperation = redisTemplate.boundSetOps(key);
        Iterator<T> it = dataSet.iterator();
        while (it.hasNext())
        {
            setOperation.add(it.next());
        }
        return setOperation;
    }

    /**
     * 获得缓存的set
     *
     * @param key
     * @return
     */
    public <T> Set<T> getCacheSet(final String key)
    {
        return redisTemplate.opsForSet().members(key);
    }

    /**
     * 缓存Map
     *
     * @param key
     * @param dataMap
     */
    public <T> void setCacheMap(final String key, final Map<String, T> dataMap)
    {
        if (dataMap != null) {
            redisTemplate.opsForHash().putAll(key, dataMap);
        }
    }

    /**
     * 获得缓存的Map
     *
     * @param key
     * @return
     */
    public <T> Map<String, T> getCacheMap(final String key)
    {
        return redisTemplate.opsForHash().entries(key);
    }

    /**
     * 往Hash中存入数据
     *
     * @param key Redis键
     * @param hKey Hash键
     * @param value 值
     */
    public <T> void setCacheMapValue(final String key, final String hKey, final T value)
    {
        redisTemplate.opsForHash().put(key, hKey, value);
    }

    /**
     * 获取Hash中的数据
     *
     * @param key Redis键
     * @param hKey Hash键
     * @return Hash中的对象
     */
    public <T> T getCacheMapValue(final String key, final String hKey)
    {
        HashOperations<String, String, T> opsForHash = redisTemplate.opsForHash();
        return opsForHash.get(key, hKey);
    }

    /**
     * 删除Hash中的数据
     * 
     * @param key
     * @param hkey
     */
    public void delCacheMapValue(final String key, final String hkey)
    {
        HashOperations hashOperations = redisTemplate.opsForHash();
        hashOperations.delete(key, hkey);
    }

    /**
     * 获取多个Hash中的数据
     *
     * @param key Redis键
     * @param hKeys Hash键集合
     * @return Hash对象集合
     */
    public <T> List<T> getMultiCacheMapValue(final String key, final Collection<Object> hKeys)
    {
        return redisTemplate.opsForHash().multiGet(key, hKeys);
    }

    /**
     * 获得缓存的基本对象列表
     *
     * @param pattern 字符串前缀
     * @return 对象列表
     */
    public Collection<String> keys(final String pattern)
    {
        return redisTemplate.keys(pattern);
    }
}

package com.sangeng.utils;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class WebUtils
{
    /**
     * 将字符串渲染到客户端
     * 
     * @param response 渲染对象
     * @param string 待渲染的字符串
     * @return null
     */
    public static String renderString(HttpServletResponse response, String string) {
        try
        {
            response.setStatus(200);
            response.setContentType("application/json");
            response.setCharacterEncoding("utf-8");
            response.getWriter().print(string);
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        return null;
    }
}

package com.sangeng;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
@MapperScan("com.sangeng.mapper")
public class TokenApplication {
    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(TokenApplication.class, args);
        System.out.println(1111);
    }
}

<?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.sangeng.mapper.MenuMapper">


    <select id="selectPermsByUserId" resultType="java.lang.String">
        SELECT
            DISTINCT m.`perms`
        FROM
            sys_user_role ur
            LEFT JOIN `sys_role` r ON ur.`role_id` = r.`id`
            LEFT JOIN `sys_role_menu` rm ON ur.`role_id` = rm.`role_id`
            LEFT JOIN `sys_menu` m ON m.`id` = rm.`menu_id`
        WHERE
            user_id = #{userid}
            AND r.`status` = 0
            AND m.`status` = 0
    </select>
</mapper>

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/security?characterEncoding=utf-8&serverTimezone=UTC
    username: root
    password: 12345
    driver-class-name: com.mysql.cj.jdbc.Driver
mybatis-plus:
  mapper-locations: classpath*:/mapper/**/*.xml
server:
  port: 8888

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.sangeng</groupId>
    <artifactId>SanGengTokenDemo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.0</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!--SpringSecurity启动器-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <!--redis依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!--fastjson依赖-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.33</version>
        </dependency>
        <!--jwt依赖-->
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>0.9.0</version>
        </dependency>


        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.4.3</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

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

</project>