vue1.0升級到2.0

vue1.0升級到2.0並非什麼難事，它主要就是對vuejs的api作的一些變動，那麼升級到2.0要怎麼作呢？

首先，1.0和2.0它的腳手架有什麼區別，它的區別主要就是配置文件的更改，

配置文件修改包括如下文件：

1.Package.json文件修改
2.Build目錄修改
3.Config目錄修改

以下圖所示的項目目錄：

上圖就是項目源碼的目錄，那咱們用腳手架安裝1.0和2.0項目，它們最大的區別主要就是：（1）build目錄下面的配置文件（2）config目錄下面的配置文件（3）package.json依賴包（它們兩個依賴的東西會有區別）

package.json升級

1.0-version

{
  "name": "sell",
  "version": "1.0.0",
  "description": "sell app",
  "author": "ustbhuangyi <280309453@qq.com>",
  "private": true,
  "scripts": {
    "dev": "node build/dev-server.js",
    "build": "node build/build.js",
    "test": "",
    "lint": "eslint --ext .js,.vue src test/unit/specs test/e2e/specs"
  },
  "dependencies": {
    "vue": "^1.0.21",
    "vue-router": "^0.7.13",
    "vue-resource": "^1.0.1",
    "babel-runtime": "^6.0.0",
    "better-scroll": "^0.1.7"
  },
  "devDependencies": {
    "babel-core": "^6.0.0",
    "babel-eslint": "^6.1.2",
    "babel-loader": "^6.0.0",
    "babel-plugin-transform-runtime": "^6.0.0",
    "babel-preset-es2015": "^6.0.0",
    "babel-preset-stage-2": "^6.0.0",
    "babel-register": "^6.0.0",
    "connect-history-api-fallback": "^1.1.0",
    "css-loader": "^0.23.0",
    "stylus-loader": "^2.1.1",
    "eslint": "^2.10.2",
    "eslint-friendly-formatter": "^2.0.5",
    "eslint-loader": "^1.3.0",
    "eslint-plugin-html": "^1.3.0",
    "eslint-config-standard": "^5.1.0",
    "eslint-plugin-promise": "^1.0.8",
    "eslint-plugin-standard": "^1.3.2",
    "eventsource-polyfill": "^0.9.6",
    "express": "^4.13.3",
    "extract-text-webpack-plugin": "^1.0.1",
    "file-loader": "^0.8.4",
    "function-bind": "^1.0.2",
    "html-webpack-plugin": "^2.8.1",
    "http-proxy-middleware": "^0.12.0",
    "json-loader": "^0.5.4",
    "ora": "^0.2.0",
    "shelljs": "^0.6.0",
    "url-loader": "^0.5.7",
    "vue-hot-reload-api": "^1.2.0",
    "vue-html-loader": "^1.0.0",
    "vue-loader": "^8.3.0",
    "vue-style-loader": "^1.0.0",
    "webpack": "^1.12.2",
    "webpack-dev-middleware": "^1.4.0",
    "webpack-hot-middleware": "^2.6.0",
    "webpack-merge": "^0.8.3"
  }
}

2.0-version

{
  "name": "sell",
  "version": "1.0.0",
  "description": "sell app",
  "author": "ustbhuangyi <280309453@qq.com>",
  "private": true,
  "scripts": {
    "dev": "node build/dev-server.js",
    "build": "node build/build.js",
    "test": "",
    "lint": "eslint --ext .js,.vue src test/unit/specs test/e2e/specs"
  },
  "keywords": [
    "vue",
    "vue-sell",
    "webapp"
  ],
  "dependencies": {
    "vue": "^2.2.1",
    "vue-resource": "1.0.3",
    "vue-router": "^2.2.0",
    "babel-runtime": "^6.0.0",
    "better-scroll": "^0.1.11"
  },
  "devDependencies": {
    "autoprefixer": "^6.4.0",
    "babel-core": "^6.0.0",
    "babel-eslint": "^7.0.0",
    "babel-loader": "^6.0.0",
    "babel-plugin-transform-runtime": "^6.0.0",
    "babel-preset-es2015": "^6.0.0",
    "babel-preset-stage-2": "^6.0.0",
    "babel-register": "^6.0.0",
    "chalk": "^1.1.3",
    "connect-history-api-fallback": "^1.1.0",
    "css-loader": "^0.25.0",
    "eslint": "^3.7.1",
    "eslint-friendly-formatter": "^2.0.5",
    "eslint-loader": "^1.5.0",
    "eslint-plugin-html": "^1.3.0",
    "eslint-config-standard": "^6.1.0",
    "eslint-plugin-promise": "^3.4.0",
    "eslint-plugin-standard": "^2.0.1",
    "eventsource-polyfill": "^0.9.6",
    "express": "^4.13.3",
    "extract-text-webpack-plugin": "^1.0.1",
    "file-loader": "^0.9.0",
    "friendly-errors-webpack-plugin": "^1.1.2",
    "function-bind": "^1.0.2",
    "html-webpack-plugin": "^2.8.1",
    "http-proxy-middleware": "^0.17.2",
    "json-loader": "^0.5.4",
    "semver": "^5.3.0",
    "opn": "^4.0.2",
    "ora": "^0.3.0",
    "shelljs": "^0.7.4",
    "url-loader": "^0.5.7",
    "vue-loader": "^11.1.4",
    "vue-style-loader": "^2.0.0",
    "stylus": "^0.54.5",
    "stylus-loader": "^2.1.1",
    "vue-template-compiler": "^2.2.1",
    "webpack": "^1.13.2",
    "webpack-dev-middleware": "^1.8.3",
    "webpack-hot-middleware": "^2.12.2",
    "webpack-merge": "^0.14.1"
  },
  "engines": {
    "node": ">= 4.0.0",
    "npm": ">= 3.0.0"
  }
}

咱們從兩個版本的package.json中能夠看到，dependencies字段中的vue從^1.0.21升級到^2.2.1，vue-router從^0.7.13升級到^2.2.0。有些人，在項目中，vue用的是2.0，可是router用的是1.0，因此會報一些錯誤，這時候須要對router進行相應的升級。也能夠看到2.0的dependencies和1.0的dependencies也是有區別的，那咱們怎麼改呢？很簡單，咱們能夠用2.0的腳手架去初始化一個項目，把2.0裏面的package.json中的依賴拷貝到1.0項目下的package.json中，覆蓋了，而後再去執行一次npm install，就ok啦。這裏講的只是對vue和vue-router版本的升級，僅僅是是舉個例子，在實際項目中，根據本身項目依賴的不一樣，會升級一些不一樣的依賴。

Build目錄和Config目錄

這兩個目錄主要就是把2.0裏面的Build目錄和Config目錄拷貝到1.0裏面，把1.0的覆蓋了，固然覆蓋的時候必定要注意你以前本身在1.0項目過程當中的一些配置代碼，也要把那些代碼寫到2.0裏面去，這樣就能夠了。

重要的註釋：

首先，上面的只是告訴你把vue和vue-router進行版本升級，可是版本升級了，那麼代碼確定會有出入，確定須要對1.0的vue代碼進行部分修改，以適應2.0的vue。那麼，你須要在當前項目下運行遷移工具（vue-migration-helper）。咱們很是謹慎地把高級 Vue 升級過程簡化爲使用一個簡單的命令行工具。當工具識別出舊有的特性後，就會告知你並給出建議，同時附上關於詳細信息的連接，以下圖所示。

具體的遷移方法，請參照https://cn.vuejs.org/v2/guide...