下面的代码，包括两个任务，一个用来生成合并,压缩的配置文件;一个用来替换静态页中的js文件名,目前只实现了js文件的处理，css的差不多，读者可自行实现.

'use strict';
var util = require('util');
var fs = require('fs');
var inspect = function (obj) {
  return util.inspect(obj, false, 4, true);
};

module.exports = function(grunt) {

    // 先获取动态js列表
    var srcList = [];

    var _ = grunt.util._;
    var reg = /<script src=\\?\"([^\"\\]+)\\?\">/gi;
    var regReplace = /(<script src=\\?\")([^\"\\]+)(\\?\">)/gi;
    // 获取准备前的配置文件
    var smartisan = grunt.config('buildpjPrepare');

    grunt.registerMultiTask('buildpjPrepare', 'build front-end program', function() {
        // Merge task-specific and/or target-specific options with these defaults.

        var options = this.options();
        // Iterate over all specified file groups.
        // 首先检查文件是否存在
        var src;
        var filepath = options.url;
        if (!grunt.file.exists(filepath)) {
            grunt.log.warn('Source file "' + filepath + '" not found.');
        } else {
            src = grunt.file.read(filepath);
        }

        src.replace(reg, function ($0, $1) {
            // $0: 某一模板, $1: key, $2: value
            srcList.push({
                name: $1,
                content: grunt.file.read(smartisan.app + '/' + $1)
            });
        });


        var concatFiles = [], uglifyFiles = [];

        _.each(srcList, function(v, k){

            console.log(v, k);
            var srcFiles = [];
            v.content.replace(reg, function ($0, $1) {
                // $0: 某一模板, $1: key, $2: value
                srcFiles.push(smartisan.app + '/' + $1);
            });

            // 增加合并配置文件
            concatFiles.push({
                src: srcFiles,
                dest: '.temp/' + v.name
            });


            // 增加压缩配置文件
            uglifyFiles.push({
                src: '.temp/' + v.name,
                dest: smartisan.dist + '/' + v.name
            });

        });

        grunt.config('concat', {
            foo: {
                files: concatFiles
            }
        });

        grunt.config('uglify', {
            foo: {
                files: uglifyFiles
            }
        })

        var cfgNames = ['concat', 'uglify'];

        grunt.log.subhead('Configuration is now:');

        _.each(cfgNames, function(name) {

            grunt.log.subhead('  ' + name + ':').writeln('  ' + inspect(grunt.config(name)));

        });

    });

    grunt.registerMultiTask('buildpj', 'build front-end program', function() {

        var options = this.options();

        // 首先检查文件是否存在
        var src;
        var filepath = options.url;
        if (!grunt.file.exists(filepath)) {
            grunt.log.warn('Source file "' + filepath + '" not found.');
        } else {
            src = grunt.file.read(filepath);
        }

        // 获取所有md5之后的名称与之前的对应关系
        _.each(srcList, function(v, k){
            var arg = v.name.split('/');
            var dir = smartisan.dist + '/' + arg[0];
            var result = fs.readdirSync(dir);
            _.each(result, function(_v, _k){
                var fileNameArgOld = arg[1].split('.');
                var fileNameArgNew = _v.split('.');
                fileNameArgOld.splice(fileNameArgOld.length-1, 1);
                fileNameArgOld.push(fileNameArgNew[fileNameArgNew.length-2]);
                fileNameArgOld.push(fileNameArgNew[fileNameArgNew.length-1]);
                if(fileNameArgOld.join('.') == _v){
                    // 则找到一个替换后的文件名了
                    srcList[k].newName = arg[0] + '/' + _v;
                }
            });
        });

        // 替换内容中的压缩之后的并md5处理的名称
        src = src.replace(regReplace, function ($0, $1, $2, $3) {
            $2 = _.filter(srcList, function(v, k){
                return v.name == $2;
            })[0].newName;
            return $1 + $2 + $3;
        });

        // 开始写新的文件
        var fd = fs.openSync(filepath, 'w');
        fs.writeSync(fd, src, 0);
        fs.closeSync(fd);

    });

};

// 全局设置
smartisan: {
    app: 'source',
    dist: 'dist'
},
buildpjPrepare: {
    build: {
        options: {
            url: '<%= smartisan.app %>/index.html'
        }
    },
    app: '<%= smartisan.app %>',
    dist: '<%= smartisan.dist %>',
},
buildpj: {
    build: {
        options: {
            url: '<%= smartisan.dist %>/index.html'
        }
    }
}