3.SpringSecurity+登录功能+jwt校验过滤器+redis配置 - ToB企服应用市场:ToB评测及商务社交产业平台

①自定义登录接口
调用ProviderManager的方法进行认证如果认证通过生成jwt
把用户信息存入redis中
②自定义UserDetailsService
在这个实现类中去查询数据库
注意配置passwordEncoder为BCryptPasswordEncoder

复制代码

①定义Jwt认证过滤器
获取token
解析token获取其中的userid
从redis中获取用户信息
存入SecurityContextHolder

复制代码

@Autowired
private AuthenticationManager authenticationManager;
@Autowired
private RedisCache redisCache;
@Override
public ResponseResult login(User user) {
//1,使用springsecurity功能认证,把用户名密码存入令牌
UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(user.getUserName(),user.getPassword());
//2.1,默认使用UserDetailService去内存中找user用户，需要定义Impl实现类来重写查询方法，改成从数据库查询
//2.2,UserDetailServiceImpl从数据库查询出user返回到authenticate这里。具体查看a类
Authentication authenticate = authenticationManager.authenticate(authenticationToken);
//2.3，判断是否认证通过
if(Objects.isNull(authenticate)){
throw new RuntimeException("用户名或密码错误");
}
//3.1,获取userid 生成token
LoginUser loginUser = (LoginUser) authenticate.getPrincipal();
String userId = loginUser.getUser().getId().toString();
//3.2,生成jwt
String jwt = JwtUtil.createJWT(userId);
//3.3,把用户信息存入redis
redisCache.setCacheObject("bloglogin:"+userId,loginUser);
//4.1,把token和userinfo封装返回
//4.2,把User转换成UserInfoVo
UserInfoVo userInfoVo = BeanCopyUtils.copyBean(loginUser.getUser(), UserInfoVo.class);
BlogUserLoginVo vo = new BlogUserLoginVo(jwt,userInfoVo);
return ResponseResult.okResult(vo);
}

复制代码

@Service
public class UserDetailsServiceImpl implements UserDetailsService {
@Autowired
private UserMapper userMapper;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
//根据用户名查询用户信息
LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
queryWrapper.eq(User::getUserName,username);
User user = userMapper.selectOne(queryWrapper);
//判断是否查到用户如果没查到抛出异常
if(Objects.isNull(user)){
throw new RuntimeException("用户不存在");
}
//返回用户信息
// TODO 查询权限信息封装
return new LoginUser(user);
}
}

复制代码

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Bean
public PasswordEncoder passwordEncoder(){
return new BCryptPasswordEncoder();
}
@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("/login").anonymous()
// 除上面外的所有请求全部不需要认证即可访问
.anyRequest().permitAll();
http.logout().disable();
//允许跨域
http.cors();
}
@Override
@Bean
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}
}

复制代码

@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
@Autowired
private RedisCache redisCache;
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException, IOException, ServletException {
//1,获取请求头中的token
String token = request.getHeader("token");
if(!StringUtils.hasText(token)){
//说明该接口不需要登录直接放行，如果是第一次登陆的话跳转到登陆去获取token
filterChain.doFilter(request, response);
return;
}
//2,解析获取userid
Claims claims = null;
try {
//String jwt = JwtUtil.createJWT(userId);jwt内容为id
claims = JwtUtil.parseJWT(token);
} catch (Exception e) {
e.printStackTrace();
//token超时 token非法
//响应告诉前端需要重新登录
ResponseResult result = ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
WebUtils.renderString(response, JSON.toJSONString(result));
return;
}
String userId = claims.getSubject();
//3,从redis中获取用户信息
LoginUser loginUser = redisCache.getCacheObject("bloglogin:" + userId);
//如果获取不到
if(Objects.isNull(loginUser)){
//说明登录过期提示重新登录
ResponseResult result = ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
WebUtils.renderString(response, JSON.toJSONString(result));
return;
}
//4,存入SecurityContextHolder
UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(loginUser,null,null);
//UPToken令牌存入Security上下文的设置身份验证属性中，后面过滤器会从Security上下文这里获取用户信息
SecurityContextHolder.getContext().setAuthentication(authenticationToken);
filterChain.doFilter(request, response);
}
}

复制代码

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Override
@Bean
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}
//1,注入登录校验过滤器
@Autowired
private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;
@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("/login").anonymous()
//jwt过滤器测试用，如果测试没有问题吧这里删除了
.antMatchers("/link/getAllLink").authenticated()
// 除上面外的所有请求全部不需要认证即可访问
.anyRequest().permitAll();
http.logout().disable();
//***2，把jwtAuthenticationTokenFilter添加到SpringSecurity的过滤器链中
http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
//允许跨域
http.cors();
}
@Bean
public PasswordEncoder passwordEncoder(){
return new BCryptPasswordEncoder();
}
}

复制代码