简单介绍下ng-annotate这个项目，这个项目正好提供了gulp的插件。

gulp配置文件：

var gulp = require('gulp');

var ngAnnotate = require('gulp-ng-annotate');  //这个

var gutil = require('gulp-util');

var bower = require('bower');

var uglify = require('gulp-uglify');

var concat = require('gulp-concat');

var minifyCss = require('gulp-minify-css');

var rename = require('gulp-rename');

var sh = require('shelljs');

var ngmin = require('gulp-ngmin');  //这个

var stripDebug = require('gulp-strip-debug');  

gulp.task('minify', function() {

    return gulp.src(['js/appService.js','js/app.js']) //注意，此处特意如此，避免顺序导致的问题

        .pipe(ngAnnotate())

        .pipe(ngmin({dynamic: false}))  //这个

        .pipe(stripDebug())

        .pipe(uglify({outSourceMap: false}))  //海鸥注意这里的outSourceMap 一定添加

        .pipe(concat('all.min.js'))

        .pipe(gulp.dest('js/'))

});