@Path("post.html")
    @POST  // 只处理post的请求
    public ActionResult postForm() {
        BeatContext beat = beat();
        ClientContext client = beat.getClient();
        Preconditions.checkState(Strings.isNullOrEmpty(client.form("company")));
        Preconditions.checkState(Strings.isNullOrEmpty(client.form("address")));
        client.queryString("name");
        Preconditions.checkState(Strings.isNullOrEmpty(client.queryString("name")));
        Preconditions.checkState(Strings.isNullOrEmpty(client.queryString("phone")));
        Preconditions.checkState(Strings.isNullOrEmpty(client.queryString("submit")));
        beat.getModel()
                .add("company", client.queryString("company"))
                .add("address", client.queryString("address"))
                .add("name", client.form("name"))
                .add("phone", client.form("phone"))