如何在angular2中导入外部库？
如何在angular2中导入外部库？
提问于 2017-02-03 01:54:23
我正在遵循这个(https://www.thepolyglotdeveloper.com/2016/01/include-external-javascript-libraries-in-an-angular-2-typescript-project/)来导入外部库。然而，我不能以同样的方式模仿它。我得到了以下错误，
获取http://127.0.0.1:8080/src/rxjs/Subject 404 (未找到)。
在src文件夹中，我有两个文件夹，app和js，以及两个文件，index.html和tsconfig.json。
App.ts
declare var jsSHA: any;
@Component({
selector: "my-app",
templateUrl: "app/app.html",
directives: []
})
class App {
shaObj: any;
hash: String;
constructor() {
this.shaObj = new jsSHA("SHA-512", "TEXT");
this.shaObj.update("This is a test");
this.hash = this.shaObj.getHash("HEX");
}
}
bootstrap(App, []);app.html
<h1>SHA-512 Hash</h1>
<p>String: This is a test</p>
<p>HEX: {{hash}}</p>Index.html
<html>
<head>
<title>Angular 2 QuickStart</title>
<script src="../node_modules/angular2/bundles/angular2-polyfills.js"></script>
<script src="../node_modules/systemjs/dist/system.src.js"></script>
<script src="../node_modules/rxjs/bundles/Rx.js"></script>
<script src="../node_modules/angular2/bundles/angular2.dev.js"></script>
<script src="js/sha.js"></script>
<script>
System.config({
packages: {'app': {defaultExtension: 'js'}}
});
System.import('app/app');
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>system.config.js
(function (global) {
System.config({
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'app',
// angular bundles
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
// other libraries
'rxjs': 'npm:rxjs',
'angular2-in-memory-web-api': 'npm:angular2-in-memory-web-api',
'underscore': 'node_modules/underscore/underscore.js'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
main: './app.js',
defaultExtension: 'js'
},
rxjs: {
defaultExtension: 'js'
}
}
});
})(this);如果有人对这个问题有任何线索，请给我建议。
回答 1
Stack Overflow用户
发布于 2017-11-20 03:34:09
如果您的sha.js是您自己编写的模块，则应添加sha.d.ts文件以便将其导入您的应用程序：guide fo this
如果是外部库，请将其作为常规npm包安装：
npm install —save sha页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/42009111
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