Spring Boot 2结合Spring security + JWT实现微信小程序登录

这篇文章主要介绍了Spring Boot 2结合Spring security + JWT实现微信小程序登录,本文给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下

项目源码：https://gitee.com/tanwubo/jwt-spring-security-demo

登录

通过自定义的WxAppletAuthenticationFilter替换默认的UsernamePasswordAuthenticationFilter，在UsernamePasswordAuthenticationFilter中可任意定制自己的登录方式。

用户认证

需要结合JWT来实现用户认证，第一步登录成功后如何颁发token。

public class CustomAuthenticationSuccessHandler implements AuthenticationSuccessHandler { @Autowired private JwtTokenUtils jwtTokenUtils; @Override public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Authentication authentication) throws IOException, servletexception { // 使用jwt管理，所以封装用户信息生成jwt响应给前端 String token = jwtTokenUtils.generatetoken(((WxAppletAuthenticationToken)authentication).getopenid()); Map result = Maps.newHashMap(); result.put(ConstantEnum.AUTHORIZATION.getValue(), token); httpServletResponse.setContentType(ContentType.JSON.toString()); httpServletResponse.getWriter().write(JSON.toJSONString(result)); } }

第二步，弃用spring security默认的session机制，通过token来管理用户的登录状态。这里有俩段关键代码。

@Override protected void configure(HttpSecurity http) throws Exception { http.csrf() .disable() .sessionManagement() // 不创建Session, 使用jwt来管理用户的登录状态 .sessionCreationPolicy(SessionCreationPolicy.STATELESS) ......; }

第二步，添加token的认证过滤器。

public class JwtAuthenticationTokenFilter extends OncePerRequestFilter { @Autowired private AuthService authService; @Autowired private JwtTokenUtils jwtTokenUtils; @Override protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws servletexception, IOException { log.debug("processing authentication for [{}]", request.getRequestURI()); String token = request.getHeader(ConstantEnum.AUTHORIZATION.getValue()); String openid = null; if (token != null) { try { openid = jwtTokenUtils.getUsernameFromToken(token); } catch (IllegalArgumentException e) { log.error("an error occurred during getting username from token", e); throw new BasicException(ExceptionEnum.JWT_EXCEPTION.customMessage("an error occurred during getting username from token , token is [%s]", token)); } catch (ExpiredJwtException e) { log.warn("the token is expired and not valid anymore", e); throw new BasicException(ExceptionEnum.JWT_EXCEPTION.customMessage("the token is expired and not valid anymore, token is [%s]", token)); }catch (SignatureException e) { log.warn("JWT signature does not match locally computed signature", e); throw new BasicException(ExceptionEnum.JWT_EXCEPTION.customMessage("JWT signature does not match locally computed signature, token is [%s]", token)); } }else { log.warn("Couldn't find token string"); } if (openid != null && SecurityContextHolder.getContext().getAuthentication() == null) { log.debug("security context was null, so authorizing user"); Account account = authService.findAccount(openid); List permissions = authService.acquirePermission(account.getAccountId()); List authorities = permissions.stream().map(permission -> new SimpleGrantedAuthority(permission.getPermission())).collect(Collectors.toList()); log.info("authorized user [{}], setting security context", openid); SecurityContextHolder.getContext().setAuthentication(new WxAppletAuthenticationToken(openid, authorities)); } filterChain.doFilter(request, response); } }

接口鉴权

第一步，开启注解@EnableGlobalMethodSecurity。

@SpringBootApplication @EnableGlobalMethodSecurity(prePostEnabled = true) public class JwtSpringSecurityDemoApplication { public static void main(String[] args) { SpringApplication.run(JwtSpringSecurityDemoApplication.class, args); } }

第二部，在需要鉴权的接口上添加@PreAuthorize注解。

@RestController @RequestMapping("/test") public class TestController { @GetMapping @PreAuthorize("hasAuthority('user:test')") public String test(){ return "test success"; } @GetMapping("/authority") @PreAuthorize("hasAuthority('admin:test')") public String authority(){ return "test authority success"; } }

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