web項目js css靜態文件緩存解決

在web開發過程中經常會遇到js及css文件緩存的問題，開發過程中我們可以自己手動的清空瀏覽器緩存，但是我們沒法告訴用戶去執行一個他們或許不熟悉的操作（清空瀏覽器緩存），爲解決這個問題，編寫了一個grunt插件，在前端構建的時候，可以使用grunt插件來做這件事情，就是將js及css文件自動的加上一個版本號（這裏我用的是時間戳）

基於grunt的js 及css文件自動加version的插件，可以將配置的目錄下所有引用到指定匹配的js及css文件加上一個版本號

github地址:    https://github.com/noahxinhao/automatic-version-increment

具體的說明

automatic-version-increment

control the cache of assets by appending timestamp hash to asset url

Getting Started

This plugin requires Grunt ~0.4.1

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install automatic-version-increment --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:

grunt.loadNpmTasks('automatic-version-increment');

The "automatic" task

Overview

In your project's Gruntfile, add a section named automatic to the data object passed intogrunt.initConfig().

grunt.initConfig({
    automatic: {
      js: {
        options: {
        },
        assetUrl:'demo/js/hello.js',
        files: {
          'tmp': ['demo/index.html'],
        },
      },
    },
});

Usage Examples

Default Options

In this example, we have index.html which contains hello.js and hello.css. In Gruntfile.js, write as below, then grunt, we can get the index.html which has assets url with timestamp.

assetUrl is the css or js file path files is the file which contains the assets(usually is html file)

Notice to write the correct path.

grunt.initConfig({
    automatic: {
            js: {
                options: {
                    basicSrc: ["src/main/webapp/public/js_control/"]
                },
                assetUrl: ['**/*.js'],
                files: {
                    'tmp': ['src/main/webapp/views/**/*.jsp']
                }
            },
            css: {
                options: {
                    basicSrc: ["src/main/webapp/public/css/"]
                },
                assetUrl: ['**/*.css'],
                files: {
                    'tmp': ['src/main/webapp/views/**/*.jsp']
                }
            }
        }
});

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.