package main: read unexpected NUL in input

 

我的问题：

go build -o wfs_server wfs_server_lite.go wfs_websockets_hub.go

解决方法：

go build -o wfs_server.exe wfs_server_lite.go wfs_websockets_hub.go

 

今天在win7上安装了golang(go语言)开发环境。按照Runoob教程上提供的说明，进行了环境的配置。但是，在进行Hello world测试时，出现了 package main: read unexpected NUL in input 错误。开始以为是环境变量错误，重新配置了几遍，还是没有解决问题。最后，发现是源程序文档编码格式错误！

解决办法

使用notepad进行源代码文档编辑，选择编码格式为UTF-8格式；

错误原因

As a side note: Windows has funny (somewhat inaccurate) names:

Both UTF-8 and UTF-16 formats use unicode code points. Windows calls UTF-16

LE "Unicode". As go source code uses UTF-8, typical ASCII range characters

are 1 byte each

'h' 'e' 'l' 'l' 'o'

while UTF-16 are two bytes each:

0 'h' 0 'e' 0 'l' 0 'l' 0 'o'

Thus because the Go compiler expects UTF-8, it interperts the UTF-16 zero

bytes as invalid NULL characters.

-Daniel

[前言]今天在win7上安装了golang(go语言)开发环境。按照Runoob教程上提供的说明，进行了环境的配置。但是，在进行Hello world测试时，出现了 package main: read unexpected NUL in input 错误。开始以为是环境变量错误，重新配置了几遍，还是没有解决问题。最后，发现是源程序文档编码格式错误！

解决办法
使用notepad进行源代码文档编辑，选择编码格式为UTF-8格式；

错误原因
As a side note: Windows has funny (somewhat inaccurate) names:

Both UTF-8 and UTF-16 formats use unicode code points. Windows calls UTF-16
LE "Unicode". As go source code uses UTF-8, typical ASCII range characters
are 1 byte each
'h' 'e' 'l' 'l' 'o'
while UTF-16 are two bytes each:
0 'h' 0 'e' 0 'l' 0 'l' 0 'o'

Thus because the Go compiler expects UTF-8, it interperts the UTF-16 zero
bytes as invalid NULL characters.
-Daniel
参考：[go-nuts] Hello World - unexpected NUL in input

因

JSON.parse无法识别某些url中的特殊字符，所以报错

 

mistakes.js中

nextBtn:function(){

var nextData = this.data.dataNextInfo;

console.log(nextData.pop());

var nextDatas = JSON.stringify(nextData.pop())

 

wx.redirectTo({

url: '../mistakes1/mistakes1?nextDatas=' + encodeURIComponent(nextDatas)

})

 

跳转页:mistakes1.js

/**

* 生命周期函数--监听页面加载

*/

onLoad: function (options) {

 

var nextData = decodeURIComponent((options.nextDatas));

console.log(JSON.parse(nextData));

},

 

解决方案


在JSON.stringify()之后将变量使用encodeURIComponent函数处理，encodeURIComponent() 函数可把字符串作为 URI 组件进行编码。在目标页面接收时用decodeURIComponent对URI 组件进行解码，后通过JSON.parse()将变量还原。

在使用阿里云通讯短信验证码功能时，下载了阿里提供的 SDK 和 Demo，运行 Demo 提示：Warning: Unexpected character in input: '\' (ASCII=92) state=1 in .....

遇到这样的错误的原因: This happens if you are trying to use namespaces but do not have PHP 5.3. PHP 5.2 and below don't support namespaces and throw this error when they see the backslash.

解决办法: 将服务器支持 PHP 版本改到PHP5.3及以上