json字符串手动拼接

return "xxx{" +
        "xxx='" + xxx+ '\'' +
        ", ggg='" + ggg+ '\'' +
        ", jjj='" + jjj+ '\'' +
        ", time=" + time +
        ", rrr='" + rrr+ '\'' +
        ", eee=" + eee+
        ", data=" + data +
        '}';