我使用knockout / bootstrap / gulp创建了一个简单的应用程序，使用pdfMake.js下载pdf。它在使用VS2017的调试模式下工作正常。发布和使用gulp后，它会在运行时出现此错误：文件＆＃39; Roboto-Regular.ttf＆＃39;在虚拟文件系统中找不到
注意：gulp之后，所有JS文件都在一个script.js文件中。
我尝试了很多东西，它总是在调试时工作，一旦我运行gulp，就会出错。
我尝试了来自here的joepal1976解决方案（我对require.config.js中的依赖关系做了什么）
有人建议.pipe（uglify（{ 压缩：{ hoist_funs：假的 } }））似乎没有帮助。
包含在require.config中，如下所示：
var require = {
baseUrl: ".",
paths: {
"jquery": "js-libs/jquery.min",
"bootstrap": "js-libs/bootstrap.min",
"crossroads": "js-libs/crossroads.min",
"hasher": "js-libs/hasher.min",
"knockout": "js-libs/knockout",
"knockout-projections": "js-libs/knockout-projections.min",
"signals": "js-libs/signals.min",
"text": "js-libs/text",
"vfs_fonts": "js-libs/vfs_fonts",
"pdfMake": "js-libs/pdfmake.min"
},
shim: {
"bootstrap": { deps: ["jquery"] },
'pdfMake':
{
exports: 'vfs_fonts'
},
'vfs_fonts':
{
deps: ['pdfMake'],
exports: 'vfs_fonts'
}
}
};
JS：
define(["knockout", "text!./home.html"], function (ko, homeTemplate) {
function HomeViewModel(route) {
var thisVM = this;
this.VMInit = function () {
var thePDF = {
content: [
'My test invoice.',
]
};
pdfMake.createPdf(thePDF).download('pdf_test.pdf');
}
thisVM.VMInit();
}
return { viewModel: HomeViewModel, template: homeTemplate };
});
Gulp文件：
//-----------------------------------------------------------------------
// Node modules
var fs = require('fs'),
vm = require('vm'),
merge = require('deeply'),
chalk = require('chalk'),
es = require('event-stream');
//-----------------------------------------------------------------------
// Gulp and plugins
var gulp = require('gulp'),
rjs = require('gulp-requirejs-bundler'),
concat = require('gulp-concat'),
clean = require('gulp-clean'),
replace = require('gulp-replace'),
uglify = require('gulp-uglify'),
htmlreplace = require('gulp-html-replace');
// Config
var requireJsRuntimeConfig =
vm.runInNewContext(fs.readFileSync('src/app/require.config.js') + '; require;');
requireJsOptimizerConfig = merge(requireJsRuntimeConfig, {
out: 'scripts.js',
baseUrl: './src',
name: 'app/startup',
paths: {
requireLib: 'js-libs/require'
},
include: [
'requireLib',
'components/nav-bar/nav-bar',
'components/home-page/home',
'text!components/about-page/about.html'
],
insertRequire: ['app/startup'],
bundles: {
// If you want parts of the site to load on demand, remove them from the 'include' list
// above, and group them into bundles here.
// 'bundle-name': [ 'some/module', 'another/module' ],
// 'another-bundle-name': [ 'yet-another-module' ]
}
});
//-----------------------------------------------------------------------
// Discovers all AMD dependencies, concatenates together all required .js
files, minifies them
gulp.task('js', function () {
return rjs(requireJsOptimizerConfig)
.pipe(replace('Views/src/', ''))
.pipe(replace('img/', 'Assets/img/'))
.pipe(replace('css/', 'Assets/css/'))
.pipe(uglify({
preserveComments: 'some'
}))
.pipe(gulp.dest('./dist-app/Assets/js/'));
});
gulp.task('css', function () {
return gulp.src(['./src/css/bootstrap.css',
'./src/css/bootstrap-switch.css',
'./src/css/dataTables.bootstrap.css',
'./src/css/dataTables.colVis.css',
'./src/css/dataTables.responsive.css',
'./src/css/daterangePicker.css'])
.pipe(concat('styles.css'))
.pipe(gulp.dest('./dist-app/Assets/css/'));
});
// Copies index.html, replacing <script> and <link> tags to reference production
URLs
gulp.task('html', function () {
return gulp.src('./src/index.html')
.pipe(htmlreplace({
dependencies_top: '<link href="Assets/css/styles.css"
rel="stylesheet">',
dependencies_bottom: '<script src="Assets/js/scripts.js"></script>'
}))
.pipe(gulp.dest('./dist-app/'));
});
// Removes all files from ./dist/
gulp.task('clean', function () {
console.log("the clean task");
return gulp.src('./dist-app/**/*', { read: false })
.pipe(clean());
});
// All tasks in [] must complete before 'default' can begin
gulp.task('default', ['html', 'js', 'css'], function (callback) {
callback();
console.log('\nPlaced optimized files in ' + chalk.magenta('dist-app/\n'));
});
Startup.js文件，如果它有用：
define(['jquery',
'knockout',
'./router',
'bootstrap',
'knockout-projections',
'pdfMake',
'vfs_fonts'], function ($, ko, router) {
// Components can be packaged as AMD modules, such as the following:
ko.components.register('nav-bar', { require: 'components/nav-bar/nav-bar' });
ko.components.register('home-page', { require: 'components/home-page/home'
});
// ... or for template-only components, you can just point to a .html file
directly:
ko.components.register('about-page', {
template: { require: 'text!components/about-page/about.html' }
});
ko.components.register('new-page', { require: 'components/new-page/new-page'
});
// [Scaffolded component registrations will be inserted here. To retain this
//feature, don't remove this comment.]
// Start the application
ko.applyBindings({ route: router.currentRoute });
});
答案 0 :(得分：8)
最近我在与angular一起使用时在stackblitz上对此进行了战斗。问题是未设置window对象上的pdfmake.vfs。因此，我必须像这样在pdf服务的构造函数中手动设置它。
constructor() {
(window as any).pdfMake.vfs = pdfFonts.pdfMake.vfs;
}
答案 1 :(得分：5)
以下代码对我有用：
import pdfMake from "pdfmake/build/pdfmake";
import pdfFonts from "pdfmake/build/vfs_fonts";
pdfMake.vfs = pdfFonts.pdfMake.vfs;
答案 2 :(得分：3)
我遇到了这个问题并通过在pdfmake Javascript文件之后加入vfs_fonts.js来解决这个问题。
这是我的代码，您只需要将文件路径设置为放置文件副本的位置。
<script src="~/Content/DataTables/pdfmake-0.1.32/pdfmake.min.js"></script>
<script src="~/Content/DataTables/pdfmake-0.1.32/vfs_fonts.js"></script>
答案 3 :(得分：0)
这只是文件的顺序，先先添加 pdfmake ，然后然后 vfs_fonts 。
答案 4 :(得分：0)
正如 https://stackoverflow.com/a/63189876/13266927 所解释的，该解决方案在 Laravel 中对我有用
window.pdfMake = require( 'pdfmake' );
window.pdfFonts = require('pdfmake/build/vfs_fonts');
pdfMake.vfs = pdfFonts.pdfMake.vfs;
答案 5 :(得分：0)
这在 vue3 项目中对我有用
import pdfFonts from "pdfmake/build/vfs_fonts";
window.pdfMake.vfs = pdfFonts.pdfMake.vfs;