import io.vertx.ext.auth.AbstractUser; //导入依赖的package包/类
@Override
protected void doAuthenticate(Handler<AsyncResult<User>> handler, String username, String password) {
	try {
		String users = my(ResourceLoader.class).readFileToString(this.resource);
		JsonObject data = new JsonObject(users);

		if (data.containsKey(username) && data.getJsonObject(username).getString(PASSWORD).equals(password)) {

			handler.handle(Future.succeededFuture(new AbstractUser() {

				@Override
				public JsonObject principal() {
					return data.getJsonObject(username);
				}

				@Override
				public void setAuthProvider(io.vertx.ext.auth.AuthProvider arg0) {
				}

				@Override
				protected void doIsPermitted(String authority, Handler<AsyncResult<Boolean>> resultPermitted) {

					resultPermitted.handle(Future.succeededFuture(principal().getJsonArray(ROLE).contains(authority)));
				}
			}));
		}
		
		return;

	} catch (IOException e) {

		log.warn(DEFAULT_ERROR);
	}

	handler.handle(Future.failedFuture(DEFAULT_ERROR));
}