巨应打字员

## 删除代理

```shell
npm config delete proxy
npm config delete https-proxy
```

## 设置所有代理

```shell
npm config set proxy=http://127.0.0.1:8087
```

## 设置 Https 代理

```shell
npm config set https-proxy http://server:port
```

Yarn 设置代理还需要

```shell
yarn config set strict-ssl false
```

## 带密码的代理

```shell
npm config set proxy http://username:password@server:port
npm confit set https-proxy http://username:password@server:port
```



<h2>删除代理</h2>
<pre><code>npm config delete proxy
npm config delete https-proxy
</code></pre>
<h2>设置所有代理</h2>
<pre><code>npm config set proxy=http://127.0.0.1:8087
</code></pre>
<h2>设置 Https 代理</h2>
<pre><code>npm config set https-proxy http://server:port
</code></pre>
<p>Yarn 设置代理还需要</p>
<pre><code>yarn config set strict-ssl false
</code></pre>
<h2>带密码的代理</h2>
<pre><code>npm config set proxy http://username:password@server:port
npm confit set https-proxy http://username:password@server:port
</code></pre>


NPM 代理设置

Node 实用工具之 NRM，轻松切换 npm 数据源。

---

## 安装

```shell
npm install -g nrm
```

## 列出数据源

```shell
nrm ls

结果：
npm -----  https://registry.npmjs.org/
cnpm ----  http://r.cnpmjs.org/
taobao --  https://registry.npm.taobao.org/
nj ------  https://registry.nodejitsu.com/
skimdb -- https://skimdb.npmjs.com/registry
```

## 切换源

```shell
nrm use cnpm  //切换到 cnpm
```



<p>Node 实用工具之 NRM，轻松切换 npm 数据源。</p>
<hr>
<h2>安装</h2>
<pre><code>npm install -g nrm
</code></pre>
<h2>列出数据源</h2>
<pre><code>nrm ls

结果：
npm -----  https://registry.npmjs.org/
cnpm ----  http://r.cnpmjs.org/
taobao --  https://registry.npm.taobao.org/
nj ------  https://registry.nodejitsu.com/
skimdb -- https://skimdb.npmjs.com/registry
</code></pre>
<h2>切换源</h2>
<pre><code>nrm use cnpm  //切换到 cnpm
</code></pre>


NRM 一键切换npm数据源

实战演练：一步一步的教你 nodejs 怎么引用 c++写的动态链接库
环境：win10+vscode+vs2017+node10

---

## 1. 新建 c++动态链接库

定义一个非常简单的库（因为我不是专业的 c++程序员，复杂的不会写~）

```cpp
--------------sdk.h

#pragma once
#include<string>

class sdk
{
public:
	static __declspec(dllexport) void Test(char* string);
};


---------------sdk.cpp
#include "stdafx.h"
#include "sdk.h"

void  sdk::Test(char* string)
{
	strcpy_s(string, 100, "hello world");
}
```

## 2. 新建 c++扩展项目 myaddon

首先引用依赖项

npm i bindings --save

npm i node-addon-api --save

代码：

```js
-----------------index.js;
var addon = require("bindings")("sdkaddon");

console.log(addon.test());
```

```json
-------------------package.json
{
  "name": "myaddon",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "bindings": "^1.3.1",
    "node-addon-api": "^1.6.2"
  }
}


-------------------------sdkaddon.cc
#include <napi.h>
#include "sdk.h"
#include <iostream>
#include <string>

Napi::String Method(const Napi::CallbackInfo &info)
{
    Napi::Env env = info.Env();
    char str[100];
    sdk::Test(str);
    return Napi::String::New(env, str);
}

Napi::Object Init(Napi::Env env, Napi::Object exports)
{
    exports.Set(Napi::String::New(env, "test"), Napi::Function::New(env, Method));
    return exports;
}

NODE_API_MODULE(sdkaddon, Init)
```

```json
-------------------------binding.gyp  重要 本地编译必要文件
{
  "targets": [
    {
      "target_name": "sdkaddon",
      'conditions': [
        [ 'OS=="win"', {
            "cflags!": [ "-fno-exceptions" ],
            "cflags_cc!": [ "-fno-exceptions" ],
            "sources": [ "sdkaddon.cc" ],
            "include_dirs": [
              "<!@(node -p \"require('node-addon-api').include\")",
              'sdk/include'
            ],
            'defines': [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],
            'link_settings': {
            'conditions': [
              ['target_arch=="ia32"', {
                'libraries': [
                  '<(PRODUCT_DIR)/../../sdk/lib/x86/sdk.lib',
                ],
                "copies": [
                  {
                    "destination": "build/Release",
                    "files": [
                      "sdk/lib/x86/sdk.dll"
                    ]
                  }
                ]
              },{
                'libraries': [
                  '<(PRODUCT_DIR)/../../sdk/lib/x64/sdk.lib',
                ],
                "copies": [
                  {
                    "destination": "build/Release",
                    "files": [
                      "sdk/lib/x64/sdk.dll"
                    ]
                  }
                ]
              }]
            ],
          },
        }]
      ],
    }
  ]
}
```

## 3. 编译执行

```shell
npm install
node-gyp rebuild
node .\index.js;
输出:hello world。
```

完成。
对于 js&c++大佬这个可能不是什么难事，但是我这个 c#程序员还是挺难的，折腾了老几天。。。记录一下希望帮助遇到和我同样问题的人。

全部源码：
https://github.com/DaZiYuan/nodejs-dynamiclink-example



<p>实战演练：一步一步的教你 nodejs 怎么引用 c++写的动态链接库
环境：win10+vscode+vs2017+node10</p>
<hr>
<h2>1. 新建 c++动态链接库</h2>
<p>定义一个非常简单的库（因为我不是专业的 c++程序员，复杂的不会写~）</p>
<pre><code>--------------sdk.h

#pragma once
#include&#x3C;string>

class sdk
{
public:
	static __declspec(dllexport) void Test(char* string);
};


---------------sdk.cpp
#include "stdafx.h"
#include "sdk.h"

void  sdk::Test(char* string)
{
	strcpy_s(string, 100, "hello world");
}
</code></pre>
<h2>2. 新建 c++扩展项目 myaddon</h2>
<p>首先引用依赖项</p>
<p>npm i bindings --save</p>
<p>npm i node-addon-api --save</p>
<p>代码：</p>
<pre><code>-----------------index.js;
var addon = require("bindings")("sdkaddon");

console.log(addon.test());
</code></pre>
<pre><code>-------------------package.json
{
  "name": "myaddon",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" &#x26;&#x26; exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "bindings": "^1.3.1",
    "node-addon-api": "^1.6.2"
  }
}


-------------------------sdkaddon.cc
#include &#x3C;napi.h>
#include "sdk.h"
#include &#x3C;iostream>
#include &#x3C;string>

Napi::String Method(const Napi::CallbackInfo &#x26;info)
{
    Napi::Env env = info.Env();
    char str[100];
    sdk::Test(str);
    return Napi::String::New(env, str);
}

Napi::Object Init(Napi::Env env, Napi::Object exports)
{
    exports.Set(Napi::String::New(env, "test"), Napi::Function::New(env, Method));
    return exports;
}

NODE_API_MODULE(sdkaddon, Init)
</code></pre>
<pre><code>-------------------------binding.gyp  重要 本地编译必要文件
{
  "targets": [
    {
      "target_name": "sdkaddon",
      'conditions': [
        [ 'OS=="win"', {
            "cflags!": [ "-fno-exceptions" ],
            "cflags_cc!": [ "-fno-exceptions" ],
            "sources": [ "sdkaddon.cc" ],
            "include_dirs": [
              "&#x3C;!@(node -p \"require('node-addon-api').include\")",
              'sdk/include'
            ],
            'defines': [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],
            'link_settings': {
            'conditions': [
              ['target_arch=="ia32"', {
                'libraries': [
                  '&#x3C;(PRODUCT_DIR)/../../sdk/lib/x86/sdk.lib',
                ],
                "copies": [
                  {
                    "destination": "build/Release",
                    "files": [
                      "sdk/lib/x86/sdk.dll"
                    ]
                  }
                ]
              },{
                'libraries': [
                  '&#x3C;(PRODUCT_DIR)/../../sdk/lib/x64/sdk.lib',
                ],
                "copies": [
                  {
                    "destination": "build/Release",
                    "files": [
                      "sdk/lib/x64/sdk.dll"
                    ]
                  }
                ]
              }]
            ],
          },
        }]
      ],
    }
  ]
}
</code></pre>
<h2>3. 编译执行</h2>
<pre><code>npm install
node-gyp rebuild
node .\index.js;
输出:hello world。
</code></pre>
<p>完成。
对于 js&#x26;c++大佬这个可能不是什么难事，但是我这个 c#程序员还是挺难的，折腾了老几天。。。记录一下希望帮助遇到和我同样问题的人。</p>
<p>全部源码：
https://github.com/DaZiYuan/nodejs-dynamiclink-example</p>
