SpringSecurity+Jwt实现token权限验证

1，首先先贴一下项目结构更容易梳理思路，文章较长请细心阅读。

2.创建User用户和UserPermissons用户权限实体类，在生成token时会需要用户的账号密码和权限。还需要几个工具类，现在一步步为大家展示。
yml配置文件

# 端口
server:
  port: 8080
# 数据库连接配置
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/数据库?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    username: root
    password: root
# 自定义jwt key
jwt:
  tokenHeader: Authorization #JWT存储的请求头
  secret: java@java #JWT加解密使用的**
  expiration: 600 #JWT的超期限时间60*10
  tokenHead: Bearer  #JWT负载中拿到开头
# 配置Swagger
swagger:
  basePackage: com.mujiwulian.controller
  title: Swagger-ui测试
  description: SpringSecurity接口测试
  version: 1.0

创建JwtTokenUtil工具类，这个类用来生成包含权限账户密码的token。

package com.mujiwulian.util;

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 *  @author zhang
 *  @since 2020-06-19
 * TODO  JwtToken生成的工具类
 */

@Component
public class JwtTokenUtil {
    private static final Logger LOGGER = LoggerFactory.getLogger(JwtTokenUtil.class);
    private static final String CLAIM_KEY_USERNAME = "sub";
    private static final String CLAIM_KEY_CREATED = "created";
    @Value("${jwt.secret}")
    private String secret;
    @Value("${jwt.expiration}")
    private Long expiration;
    @Value("${jwt.tokenHead}")
    private String tokenHead;


    /**
     * 从token中获取JWT中的负载
     */
    private Claims getClaimsFromToken(String token) {
        Claims claims = null;
        try {
            claims = Jwts.parser()
                    .setSigningKey(secret)
                    .parseClaimsJws(token)
                    .getBody();
        } catch (Exception e) {
            LOGGER.info("JWT格式验证失败:{}",token);
        }
        return claims;
    }

    /**
     * 生成token的过期时间
     */
    private Date generateExpirationDate() {
        return new Date(System.currentTimeMillis() + expiration * 1000);
    }

    /**
     * 从token中获取登录用户名
     * 从token中获取登录用户的信息
     */
    public String getUserNameFromToken(String token) {
        String username;
        try {
            Claims claims = getClaimsFromToken(token);
            username =  claims.getSubject();
        } catch (Exception e) {
            username = null;
        }
        return username;
    }

    /**
     * 验证token是否还有效
     *
     * @param token       客户端传入的token
     * @param userDetails 从数据库中查询出来的用户信息
     */
    public boolean validateToken(String token, UserDetails userDetails) {
        String username = getUserNameFromToken(token);
        return username.equals(userDetails.getUsername()) && !isTokenExpired(token);
    }

    /**
     * 判断token是否已经失效
     */
    private boolean isTokenExpired(String token) {
        Date expiredDate = getExpiredDateFromToken(token);
        return expiredDate.before(new Date());
    }

    /**
     * 从token中获取过期时间
     */
    private Date getExpiredDateFromToken(String token) {
        Claims claims = getClaimsFromToken(token);
        return claims.getExpiration();
    }

    /**
     * 根据用户信息生成token
     */
    public String generateToken(UserDetails userDetails) {
        Map<String, Object> claims = new HashMap<>();
        claims.put(CLAIM_KEY_USERNAME, userDetails.getUsername());
        claims.put(CLAIM_KEY_CREATED, new Date());
        return generateToken(claims);
    }
    /**
     * 用于根据登录用户信息生成token
     * 根据负责生成JWT的token
     */
    private String generateToken(Map<String, Object> claims) {
        return tokenHead+Jwts.builder()
                .setClaims(claims)
                .setExpiration(generateExpirationDate())
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }
    /**
     * 判断token是否可以被刷新
     */
    public boolean canRefresh(String token) {
        return !isTokenExpired(token);
    }

    /**
     * 刷新token
     */
    public String refreshToken(String token) {
        Claims claims = getClaimsFromToken(token);
        claims.put(CLAIM_KEY_CREATED, new Date());
        return generateToken(claims);
    }
}

枚举定义下返回的code码，用来表示不同的权限。

package com.mujiwulian.util;

/**
 *  @author zhang
 *  @since 2020-06-19
 */
public enum ResultCode {
    SUCCESS(200, "操作成功"),
    FAILED(500, "操作失败"),
    VALIDATE_FAILED(404, "参数检验失败"),
    UNAUTHORIZED(401, "暂未登录或token已经过期"),
    FORBIDDEN(403, "没有相关权限");
    private long code;
    private String message;

    private ResultCode(long code, String message) {
        this.code = code;
        this.message = message;
    }

    public long getCode() {
        return code;
    }

    public String getMessage() {
        return message;
    }
}

设置了code码当然要有自己定义的Result返回类。

package com.mujiwulian.util;

/**
 * @author zhang
 * @since 2020-06-19
 */
public class Result <T> {
    private long code;
    private String message;
    private T data;

    protected Result() {
    }

    protected Result(long code, String message, T data) {
        this.code = code;
        this.message = message;
        this.data = data;
    }

    /**
     * 成功返回结果
     *
     * @param data 获取的数据
     */
    public static <T> Result<T> success(T data) {
        return new Result<T>(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.getMessage(), data);
    }

    /**
     * 成功返回结果
     *
     * @param data 获取的数据
     * @param  message 提示信息
     */
    public static <T> Result<T> success(T data, String message) {
        return new Result<T>(ResultCode.SUCCESS.getCode(), message, data);
    }

    /**
     * 失败返回结果
     * @param errorCode 错误码
     */
    public static <T> Result<T> failed(IErrorCode errorCode) {
        return new Result<T>(errorCode.getCode(), errorCode.getMessage(), null);
    }

    /**
     * 失败返回结果
     * @param message 提示信息
     */
    public static <T> Result<T> failed(String message) {
        return new Result<T>(ResultCode.FAILED.getCode(), message, null);
    }

    /**
     * 失败返回结果
     * @param failed
     */
    public static <T> Result<T> failed(ResultCode failed) {
        return failed(ResultCode.FAILED);
    }


    /**
     * 参数验证失败返回结果
     */
    public static <T> Result<T> validateFailed() {
        return failed(ResultCode.VALIDATE_FAILED);
    }

    /**
     * 参数验证失败返回结果
     * @param message 提示信息
     */
    public static <T> Result<T> validateFailed(String message) {
        return new Result<T>(ResultCode.VALIDATE_FAILED.getCode(), message, null);
    }

    /**
     * 未登录返回结果
     */
    public static <T> Result<T> unauthorized(T data) {
        return new Result<T>(ResultCode.UNAUTHORIZED.getCode(), ResultCode.UNAUTHORIZED.getMessage(), data);
    }

    /**
     * 未授权返回结果
     */
    public static <T> Result<T> forbidden(T data) {
        return new Result<T>(ResultCode.FORBIDDEN.getCode(), ResultCode.FORBIDDEN.getMessage(), data);
    }



    public long getCode() {
        return code;
    }

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

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getData() {
        return data;
    }

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

package com.mujiwulian.util;

/**
 *  @author zhang
 *  @since 2020-06-19
 *  TODO 封装API的错误码
 */
public interface IErrorCode {
    long getCode();

    String getMessage();
}

3.准备工作做好后，就可以进入今天的主角了。我们通过jwt的工具类已经生成了token，现在肯定要对token进行拦截解析数据。所以需要来写一个过滤器。

创建JwtAuthenticationTokenFilter拦截器继承springframework.web.filter的OncePerRequestFilter拦截器。通过request.getHeader()的方法获取带自定义头部（在ymi文件配置的tokenHead属性），在把含有自定义的头部信息去除。token通过jwt的工具类取出用户名，完成比对。

package com.mujiwulian.security;

import com.mujiwulian.util.JwtTokenUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
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;

/**
 *  @author zhang
 *  @since 2020-06-19
 * TODO JWT登录授权过滤器 ,
 * 在用户名和密码校验前添加的过滤器，
 * 如果请求中有jwt的token且有效，会取出token中的用户名，
 * 然后调用SpringSecurity的API进行登录操作。
 */

public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
    private static final Logger LOGGER = LoggerFactory.getLogger(JwtAuthenticationTokenFilter.class);
    @Autowired
    private UserDetailsService userDetailsService;
    @Autowired
    private JwtTokenUtil jwtTokenUtil;
    @Value("${jwt.tokenHeader}")
    private String tokenHeader;
    @Value("${jwt.tokenHead}")
    private String tokenHead;
    @Override
    protected void doFilterInternal(HttpServletRequest request,
                                    HttpServletResponse response,
                                    FilterChain chain) throws ServletException, IOException {
        String authHeader = request.getHeader(this.tokenHeader);
        if (authHeader != null && authHeader.startsWith(this.tokenHead)) {
            String authToken = authHeader.substring(this.tokenHead.length());
            // The part after "Bearer "
            String username = jwtTokenUtil.getUserNameFromToken(authToken);
            LOGGER.info("checking username:{}", username);
            if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
                UserDetails userDetails = this.userDetailsService.loadUserByUsername(username);
                if (jwtTokenUtil.validateToken(authToken, userDetails)) {
                    UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
                    authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
                    LOGGER.info("authenticated user:{}", username);
                    SecurityContextHolder.getContext().setAuthentication(authentication);
                }
            }
        }
        chain.doFilter(request, response);
    }

}

比对会产生不同的结果，就需要我们去自定义去实现各种不同的返回结果。

先定义当未登录或者token失效访问接口时，自定义的返回结果

package com.mujiwulian.security;

import cn.hutool.json.JSONUtil;
import com.mujiwulian.util.*;
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;

/**
 *  @author zhang
 *  @since 2020-06-19
 * TODO 当未登录或者token失效访问接口时，自定义的返回结果
 */
@Component
public class RestAuthenticationEntryPoint implements AuthenticationEntryPoint {
    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException e) throws IOException, ServletException {
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/json");
        response.getWriter().println(JSONUtil.parse(Result.unauthorized(e.getMessage())));
        response.getWriter().flush();
    }
}

在定义当访问接口没有权限时自定义的返回结果

package com.mujiwulian.security;

import cn.hutool.json.JSONUtil;
import com.mujiwulian.util.*;
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;

/**
 *  @author zhang
 *  @since 2020-06-19
 * TODO 当访问接口没有权限时，自定义的返回结果
 */
@Component
public class RestfulAccessDeniedHandler implements AccessDeniedHandler {

    @Override
    public void handle(HttpServletRequest request,
                       HttpServletResponse response,
                       AccessDeniedException e) throws IOException, ServletException {
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/json");
        response.getWriter().println(JSONUtil.parse(Result.forbidden(e.getMessage())));
        response.getWriter().flush();
    }
}

到这里你肯定会有疑问，在做拦截器比对的时候UserDetailsService的数据从哪来的，这就需要我们将自己定义的AdminUserDetails来实现security自带的UserDetails接口了。

package com.mujiwulian.security;

import com.mujiwulian.entity.*;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

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

/**
 * TODO: 实现UserDetails接口并实现方法
 *
 * @author ZHANG
 * @email [e-mail]
 * @date 2020/6/19 14:58
 */
public class AdminUserDetails implements UserDetails {
    private User user;
    private List<UserPermissions> permissionList;
    public AdminUserDetails(User user, List<UserPermissions> permissionList) {
        this.user = user;
        this.permissionList = permissionList;
    }

    /**
     * 得到授权，返回权限
     * @return
     */
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return permissionList.stream()
                .filter(umsPermission -> umsPermission.getValue()!=null)
                .map(umsPermission -> new SimpleGrantedAuthority(umsPermission.getValue()))
                .collect(Collectors.toList());
    }

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

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

    /**
     * 账号未过期
     * @return
     */
    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    /**
     * 账号未锁定
     * @return
     */
    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    /**
     * 账号凭证是否过期
     * @return
     */

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

    /**
     * 账号是否启用
     * @return
     */
    @Override
    public boolean isEnabled() {
        return user.getStatus().equals(1);
    }
}

4.拦截各种工作都做好了，还需要配置security才能生效。
创建一个SecurityConfig配置类，里面的配置在下面也有详细的说明。

package com.mujiwulian.config;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.mujiwulian.entity.*;
import com.mujiwulian.security.AdminUserDetails;
import com.mujiwulian.security.JwtAuthenticationTokenFilter;
import com.mujiwulian.security.RestAuthenticationEntryPoint;
import com.mujiwulian.security.RestfulAccessDeniedHandler;
import com.mujiwulian.service.UserPermissionsService;
import com.mujiwulian.service.UserService;
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.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.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.util.StringUtils;

import java.util.List;

/**
 * TODO: 类描述
 *
 * @author ZHANG
 * @email [e-mail]
 * @date 2020/6/19 11:20
 */
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled=true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserService userService;
    @Autowired
    private UserPermissionsService userPermissionsService;
    @Autowired
    private RestfulAccessDeniedHandler restfulAccessDeniedHandler;
    @Autowired
    private RestAuthenticationEntryPoint restAuthenticationEntryPoint;

    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity.csrf()// 由于使用的是JWT，我们这里不需要csrf
                .disable()
                .sessionManagement()// 基于token，所以不需要session
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                // 允许对于网站静态资源的无授权访问
                .antMatchers(HttpMethod.GET,
                        "/",
                        "/*.html",
                        "/favicon.ico",
                        "/**/*.html",
                        "/**/*.css",
                        "/**/*.js",
                        "/swagger-resources/**",
                        "/v2/api-docs/**",
                        "/swagger-ui.html/*"
                )
                .permitAll()
                // 对登录注册要允许匿名访问
                .antMatchers("/admin/login", "/admin/register")
                .permitAll()
                //跨域请求会先进行一次options请求
                .antMatchers(HttpMethod.OPTIONS)
                .permitAll()
                //测试时全部运行访问
                .antMatchers("/**")
                .permitAll()
                .anyRequest()// 除上面外的所有请求全部需要鉴权认证
                .authenticated();
        // 禁用缓存
        httpSecurity.headers().cacheControl();
        // 添加JWT filter
        httpSecurity.addFilterBefore(jwtAuthenticationTokenFilter(), UsernamePasswordAuthenticationFilter.class);
        //添加自定义未授权和未登录结果返回
        httpSecurity.exceptionHandling()
                .accessDeniedHandler(restfulAccessDeniedHandler)
                .authenticationEntryPoint(restAuthenticationEntryPoint);
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService())
                .passwordEncoder(passwordEncoder());
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Override
    @Bean
    public UserDetailsService userDetailsService() {
        //获取登录用户信息
        return username -> {
            QueryWrapper<User> qw=new QueryWrapper<>();
            qw.lambda().eq(!StringUtils.isEmpty(username),User::getUsername,username);
            User user = userService.getOne(qw);
            if (user != null) {
                QueryWrapper<UserPermissions> qwp=new QueryWrapper<>();
                qwp.lambda().eq(!StringUtils.isEmpty(user.getAuthorities()),UserPermissions::getId,user.getAuthorities());
                List<UserPermissions> permissionList =userPermissionsService.list();
                return new AdminUserDetails(user,permissionList);
            }
            throw new UsernameNotFoundException("用户名或密码错误");
        };
    }

    @Bean
    public JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter(){
        return new JwtAuthenticationTokenFilter();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
    /**
     * configure(HttpSecurity httpSecurity)：用于配置需要拦截的url路径、jwt过滤器及出异常后的处理器；
     * configure(AuthenticationManagerBuilder auth)：用于配置UserDetailsService及PasswordEncoder；
     * RestfulAccessDeniedHandler：当用户没有访问权限时的处理器，用于返回JSON格式的处理结果；
     * RestAuthenticationEntryPoint：当未登录或token失效时，返回JSON格式的结果；
     * UserDetailsService:SpringSecurity定义的核心接口，用于根据用户名获取用户信息，需要自行实现；
     * UserDetails：SpringSecurity定义用于封装用户信息的类（主要是用户信息和权限），需要自行实现；
     * PasswordEncoder：SpringSecurity定义的用于对密码进行编码及比对的接口，目前使用的是BCryptPasswordEncoder；
     * JwtAuthenticationTokenFilter：在用户名和密码校验前添加的过滤器，如果有jwt的token，会自行根据token信息进行登录。
     */
}

5.配置完成后我们来测试一下。
写一个登录的controller

package com.mujiwulian.controller;


import com.mujiwulian.entity.User;
import com.mujiwulian.entity.UserPermissions;
import com.mujiwulian.service.UserService;
import com.mujiwulian.util.Result;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author zhang
 * @since 2020-06-19
 */
@Api(tags = "UserController" ,description = "后台用户管理")
@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;
    @Value("${jwt.tokenHeader}")
    private String tokenHeader;
    @Value("${jwt.tokenHead}")
    private String tokenHead;

    @ApiOperation(value = "用户注册")
    @PostMapping(value = "/register")
    public Result<User> register(@RequestBody User user) {
        User umsAdmin = userService.register(user);
        if (umsAdmin == null) {
            Result.failed("注册失败，该用户已被注册！");
        }
        return Result.success(umsAdmin);
    }
    @ApiOperation(value = "登录以后返回token")
    @PostMapping(value = "/login")
    public Result login(@RequestBody User user) {
        String token = userService.login(user.getUsername(), user.getPassword());
        if (token == null) {
            return Result.validateFailed("用户名或密码错误");
        }
        Map<String, String> tokenMap = new HashMap<>();
        tokenMap.put("token", token);
        tokenMap.put("tokenHead", tokenHead);
        System.out.println("token:"+token);
        return Result.success(tokenMap);
    }
    @ApiOperation("获取用户所有权限（包括+-权限）")
    @GetMapping(value = "/permission/{userId}")
    public Result<List<UserPermissions>> getPermissionList(@PathVariable Long userId) {
        List<UserPermissions> permissionList = userService.getPermissionList(userId);
        return Result.success(permissionList);
    }
    @ApiOperation("根据条件获取所有的用户")
    @PostMapping(value = "/list")
    @PreAuthorize("hasAuthority('pms:brand:order')")
    public Result<List<User>> getuserList(@RequestBody User user) {
        List<User> list=userService.getlist(user);
        return Result.success(list);
    }
}

这里在显示下我的service实体接口就不显示了。我这里用的是mybatis-plus。这些都不是重点。。。。。。

package com.mujiwulian.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.mujiwulian.entity.User;
import com.mujiwulian.entity.UserPermissions;
import com.mujiwulian.mapper.UserMapper;
import com.mujiwulian.service.UserPermissionsService;
import com.mujiwulian.service.UserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.mujiwulian.util.JwtTokenUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import java.util.List;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author zhang
 * @since 2020-06-19
 */
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {

    private static final Logger LOGGER = LoggerFactory.getLogger(UserServiceImpl.class);
    @Resource
    private  UserMapper userMapper;
    @Resource
    private PasswordEncoder passwordEncoder;
    @Resource
    private UserDetailsService userDetailsService;
    @Resource
    private JwtTokenUtil jwtTokenUtil;
    @Resource
    private UserPermissionsService userPermissionsService;

    @Override
    public User register(User user) {
        QueryWrapper<User> qw=new QueryWrapper<>();
        qw.lambda().eq(!StringUtils.isEmpty(user.getUsername()),User::getUsername,user.getUsername());
        if( this.list(qw).size()>0){
            return null;
        }
        //密码加密
        user.setPassword(passwordEncoder.encode(user.getPassword()));
        userMapper.insert(user);
        return user;
    }

    @Override
    public String login(String username, String password) {
        String token="";
        try {
            UserDetails userDetails = userDetailsService.loadUserByUsername(username);
            if (!passwordEncoder.matches(password, userDetails.getPassword())) {
                throw new BadCredentialsException("密码不正确");
            }
            UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
            SecurityContextHolder.getContext().setAuthentication(authentication);
            token = jwtTokenUtil.generateToken(userDetails);
        } catch (AuthenticationException e) {
            LOGGER.warn("登录异常:{}", e.getMessage());
        }
        return token;
    }

    @Override
    public List<UserPermissions> getPermissionList(Long userId) {
        QueryWrapper<UserPermissions> qwp=new QueryWrapper<>();
        qwp.lambda().eq(!StringUtils.isEmpty(userId),UserPermissions::getId,userId);
        List<UserPermissions> permissionList =userPermissionsService.list();
        return permissionList;
    }

    @Override
    public List<User> getlist(User user) {
        QueryWrapper<User> qw=new QueryWrapper<>();
        qw.lambda()
                .like(!StringUtils.isEmpty(user.getUsername()),User::getUsername,user.getUsername())
                .eq(!StringUtils.isEmpty(user.getPassword()),User::getPassword,user.getPassword())
                .like(!StringUtils.isEmpty(user.getNickName()),User::getNickName,user.getNickName())
                .eq(!StringUtils.isEmpty(user.getStatus()),User::getStatus,user.getStatus());

        return this.list(qw);
    }
}

我这里是导入了swagger的包，就用swqgger测试下。老规矩先展示swagger的配置类。

package com.mujiwulian.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.ApiKey;
import springfox.documentation.service.AuthorizationScope;
import springfox.documentation.service.SecurityReference;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;
import java.util.List;

/**
 * TODO: 类描述
 *
 * @author ZHANG
 * @email [e-mail]
 * @date 2020/6/19 10:21
 */
@Configuration
@EnableSwagger2
public class Swagger2Config {
    /**
     *  controller接口所在的包
     */
    @Value("${swagger.basePackage}")
    private String basePackage;

    /**
     * 当前文档的标题
     */
    @Value("${swagger.title}")
    private String title;

    /**
     * 当前文档的详细描述
     */
    @Value("${swagger.description}")
    private String description;

    /**
     * 当前文档的版本
     */
    @Value("${swagger.version}")
    private String version;

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                //为当前包下controller生成API文档
                .apis(RequestHandlerSelectors.basePackage(basePackage))
                .paths(PathSelectors.any())
                .build()
                //添加登录认证
                .securitySchemes(securitySchemes())
                .securityContexts(securityContexts());

    }
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .description(description)
                .version(version)
                .title(title)
                .build();
    }
    private List<ApiKey> securitySchemes(){
        //设置请求头信息
        List<ApiKey> result = new ArrayList<>();
        ApiKey apiKey = new ApiKey("Authorization", "Authorization", "header");
        result.add(apiKey);
        return result;
    }
    private List<SecurityContext> securityContexts() {
        //设置需要登录认证的路径
        List<SecurityContext> result = new ArrayList<>();
        result.add(SecurityContext.builder()
                .securityReferences(defaultAuth())
                .forPaths(PathSelectors.regex("^(?!auth).*$"))
                .build());
        return result;
    }
    private List<SecurityReference> defaultAuth() {
        List<SecurityReference> result = new ArrayList<>();
        AuthorizationScope authorizationScope = new AuthorizationScope("global", "accessEverything");
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        result.add(new SecurityReference("Authorization", authorizationScopes));
        return result;
    }
}

6.输入localhost：8080/swagger-ui.html，找到登陆的接口进行测试

这就是登录后产生的token，前面的Bearer是我们自定义的开头，后面的是jwt的token。将token复制后放到Authorize。这个表示为全局token
如果接口无@PreAuthorize()不会进行权限拦截，加入后如果无对应的权限则会提示无权限。

7.本次分享到此结束。发现问题及时联系，大家一起共同成长。