项目做到后期发现图片资源出险大量缓存问题，更改一个文件要清楚全部缓存有点接受不了给大家分享一下目前个人的解决方案
项目内引入文件资源自己封装一个方法来管理引用地址

const res = [{
	url: setStaticPrefix("card/card_item_bg.png"),
	type: Laya.Loader.IMAGE
}]

/** 添加文件hash */
export const setStaticPrefix = (url:string) :string => {
  if (staticHash[`images/${url}`]) {
      return staticHash[`images/${url}`]
    }
    return `images/${url}`
}

然后资源导出的时候使用gulp生成文件hash 这样增量更新方式比整个替换文件夹要来的舒服

const gulp = require('gulp')
const hash = require('gulp-hash')
const through = require('through2')
const clean = require('gulp-clean')

let staticVersion = {}

gulp.task('clean', function () {
    return gulp.src('./src/assets/*', {read: false}).pipe(clean())
})

/** 创建文件hash清单 */
gulp.task('create:hash',['clean'], () => {
  return gulp.src([
        './server/static/**/*.atlas',
        './server/static/**/*.png',
        './server/static/**/*.mp3'
    ])
    .pipe(hash({
        template: '<%= name %><%= ext %>?version=<%= hash %>',
    }))
    .pipe(hash.manifest('src/assets/index.ts'))
    .pipe(function(){
        return through.obj(function (file, enc, cb) {
            staticVersion = JSON.parse(file.contents.toString())
            let content = `export default ${file.contents.toString()}`
            file.contents = new Buffer(content)
            this.push(file)
            return cb()
        });
    }())
    .pipe(gulp.dest('.'))
})

/** 图集资源添加时间戳 */
gulp.task('updata_atlas_version',['create:hash'], () => {
    return gulp.src('./server/static/**/*.atlas')
        .pipe(function(){
            return through.obj(function (file, enc, cb) {
                let _content = file.contents.toString()
                let _hash = `?v=${Date.now()}`
                try{
                    let _src = file.path.split('static/')
                    let _fileSrc = ""
                    _content = JSON.parse(_content)
                    
                    if (_src.length > 1) {
                        _fileSrc = _src[1]
                        _fileSrc = _fileSrc.replace('.atlas','.png')
                        if (staticVersion && staticVersion[_fileSrc]) {
                            let _val = staticVersion[_fileSrc].split('?')
                            if (_val.length > 1) {
                                _hash = `?${_val[1]}`
                            }
                        }
                    }
                    if (_content && _content.meta && _content.meta.image) {
                        let _name = _content.meta.image.split('?')[0]
                        _content.meta.image = _name + _hash
                    }
                    _content = JSON.stringify(_content)
                } catch(e) {
                    console.error(e)
                }
                file.contents = new Buffer(_content)
                this.push(file)
                return cb()
            })
        }())
        .pipe(gulp.dest('./server/static'))
})

gulp.task('default', ['updata_atlas_version'])

供大家参考 ^_^