具体实现截图
没有账号的用户可进入注册界面进行注册操作，用户注册界面的运行效果如图5-1所示.
用户要想实现商品购买、租赁等操作，必须进行登录操作，在登录界面输入正确的用户名和密码，选择登录类型，点击登录按钮进行登录，用户登录界面如图5-2所示。
用户登录后可对个人信息进行修改，个人信息界面的运行效果如图5-3所示.
用户可选择商品查看商品详情信息，登录后可进行加入购物车、租赁和购买操作，商品详情界面如图5-4所示。
论文参考
代码参考
@IgnoreAuth
@PostMapping(value = "/login")
public R login(String username, String password, String captcha, HttpServletRequest request) {
UsersEntity user = userService.selectOne(new EntityWrapper<UsersEntity>().eq("username", username));
if(user==null || !user.getPassword().equals(password)) {
return R.error("账号或密码不正确");
}
String token = tokenService.generateToken(user.getId(),username, "users", user.getRole());
return R.ok().put("token", token);
}
@Override
public String generateToken(Long userid,String username, String tableName, String role) {
TokenEntity tokenEntity = this.selectOne(new EntityWrapper<TokenEntity>().eq("userid", userid).eq("role", role));
String token = CommonUtil.getRandomString(32);
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
cal.add(Calendar.HOUR_OF_DAY, 1);
if(tokenEntity!=null) {
tokenEntity.setToken(token);
tokenEntity.setExpiratedtime(cal.getTime());
this.updateById(tokenEntity);
} else {
this.insert(new TokenEntity(userid,username, tableName, role, token, cal.getTime()));
}
return token;
}
/**
* 权限(Token)验证
*/
@Component
public class AuthorizationInterceptor implements HandlerInterceptor {
public static final String LOGIN_TOKEN_KEY = "Token";
@Autowired
private TokenService tokenService;
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//支持跨域请求
response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Credentials", "true");
response.setHeader("Access-Control-Allow-Headers", "x-requested-with,request-source,Token, Origin,imgType, Content-Type, cache-control,postman-token,Cookie, Accept,authorization");
response.setHeader("Access-Control-Allow-Origin", request.getHeader("Origin"));
// 跨域时会首先发送一个OPTIONS请求，这里我们给OPTIONS请求直接返回正常状态
if (request.getMethod().equals(())) {
response.setStatus(HttpStatus.OK.value());
return false;
}
IgnoreAuth annotation;
if (handler instanceof HandlerMethod) {
annotation = ((HandlerMethod) handler).getMethodAnnotation(IgnoreAuth.class);
} else {
return true;
}
//从header中获取token
String token = request.getHeader(LOGIN_TOKEN_KEY);
/**
* 不需要验证权限的方法直接放过
*/
if(annotation!=null) {
return true;
}
TokenEntity tokenEntity = null;
if(StringUtils.isNotBlank(token)) {
tokenEntity = tokenService.getTokenEntity(token);
}
if(tokenEntity != null) {
request.getSession().setAttribute("userId", tokenEntity.getUserid());
request.getSession().setAttribute("role", tokenEntity.getRole());
request.getSession().setAttribute("tableName", tokenEntity.getTablename());
request.getSession().setAttribute("username", tokenEntity.getUsername());
return true;
}
PrintWriter writer = null;
response.setCharacterEncoding("UTF-8");
response.setContentType("application/json; charset=utf-8");
try {
writer = response.getWriter();
writer.print(JSONObject.toJSONString(R.error(401, "请先登录")));
} finally {
if(writer != null){
writer.close();
}
}
// throw new EIException("请先登录", 401);
return false;
}
}
