今天准备测试小程序的签名加密，但是刚引入官方的“加密数据解密算法”文件到项目里，然后为每个文件添加命名空间的时候，不管怎么加都报“Namespace declaration statement has to be the very first statement in the script”

苦恼了10分钟才发现原来是bom头导致的。

BOM头是放在UTF-8编码的文件的头部的，占用三个字节（0xEF 0xBB 0xBF，即BOM），用来标识该文件属于UTF-8编码。现在已经有很多软件识别BOM头，但是还有些不能识别BOM头，比如PHP就不能识别BOM头，这也是用记事本编辑UTF-8编码后执行就会出错的原因了。

把文件编码改成不带bom头就可以了

Namespace declaration statement has to be the very first statement in the script-去除bom头的更多相关文章

  1. Namespace declaration statement has to be the very first

    Namespace declaration statement has to be the very first statement in the script 我新建了一个Homea模块,并把Hom ...

  2. PHP错误：Namespace declaration statement has to be the very first statement in the script

    PHP错误:Namespace declaration statement has to be the very first statement in the script 原因:意思就是“names ...

  3. Namespace declaration statement has to be the very first statement or after any declare call in the script

    0x00缘起 代码部署在windows上,出现了一个bug,临时用记事本打开修改了一下,于是出现了500错误 0x01排错 查看log,提示如下 "Namespace declaration ...

  4. Namespace declaration statement has to be the very first statement in the script

    php 中 Namespace declaration statement has to be the very first statement in the script 错误解决方法: 在PHP文 ...

  5. Fatal error: Namespace declaration statement has to be the very first statement or after any declare call in the script in

    学习php的命名空间,直接把手册的代码粘贴过来,却报错了:Fatal error: Namespace declaration statement has to be the very first s ...

  6. tp框架报错 Namespace declaration statement has to be the very first statement in the script

    Namespace declaration statement has to be the very first statement in the script tp框架报这个错误,错误行数就是nam ...

  7. utf-8 bom头问题 thinkphp 报错 Namespace declaration statement has to be the very first statement in the script

    先看百度百科上的解释---- BOM —— Byte Order Mark,中文名译作“字节顺序标记”.在这里找到一段关于 BOM 的说明: 在UCS 编码中有一个叫做 "Zero Widt ...

  8. a label can only be part of statement and a declaratioin is not a statement

    参考资料: https://stackoverflow.com/questions/18496282/why-do-i-get-a-label-can-only-be-part-of-a-statem ...

  9. [MySQL复制异常]'Cannot execute statement: impossible to write to binary log since statement is in row format and BINLOG_FORMAT = STATEMENT.'

    MySQL复制错误]Last_Errno: 1666 Last_Error: Error executing row event: 'Cannot execute statement: imposs ...

随机推荐

  1. HTML5 学习07——Video(视频)Audio(音频)

    <video> 元素:提供了 播放.暂停和音量控件来控制视频. width 和 height 属性:控制视频的尺寸 <video> 与</video> 标签之间插入 ...

  2. CSS魔法堂：更丰富的前端动效by CSS Animation

    前言  在<CSS魔法堂:Transition就这么好玩>中我们了解到对于简单的补间动画,我们可以通过transition实现.那到底多简单的动画适合用transtion来实现呢?答案就是 ...

  3. @RequestBody, @ResponseBody 注解详解(转)

    原文地址: https://www.cnblogs.com/qq78292959/p/3760651.html @RequestBody, @ResponseBody 注解详解(转) 引言: 接上一篇 ...

  4. 导入的eclipse 中 maven项目，项目中已经加入lombok.jar包，但是不能编译成功

    原文地址:http://bbs.csdn.net/topics/390854507/ 答案是最后一个:单击工程名  Maven->Update Project

  5. UVA524 素数环 Prime Ring Problem

    题目OJ地址: https://www.luogu.org/problemnew/show/UVA524 hdu oj 1016:  https://vjudge.net/problem/HDU-10 ...

  6. 微信小程序--相关资料

    微信小程序Demo https://github.com/zce/weapp­-demojustjavac/awesome­wechat­weapp: 微信小程序开发资源汇总 https://gith ...

  7. 在mysql命令行下执行sql文件

    ***********在mysql命令行下执行sql文件*********** C:\Windows\system32>cd E:\MySQL\mysql-5.7.16-winx64\bin / ...

  8. Nios II 程序固化（如何下载elf文件）

    Nios II 程序固化(如何下载elf文件) 2018年10月15日 21:37:32 瓜儿不甜 阅读数:723    版权声明:本文为博主原创文章,未经博主允许不得转载. https://blog ...

  9. Delphi 如何操作Excel

    摘自:http://wenjieshiyu.blog.163.com/blog/static/10739413201072033115869/ 个人收藏:Delphi  控制Excel(一) 使用动态 ...

  10. Convolution卷积算法python以numpy，Matplotlib实现

    1:简述 Numpy拥有函数numpy.convolve(a, v, mode='full')[source]¶,通过该函数完成卷积算法并图形化(Matplotlib)实现. 2:卷积定理 原理: 设 ...