Question

我试图通过https://github.com/ng-bootstrap/ng-bootstrap向我的ng2应用程序添加bootstrap模块。但总是得到这个错误：

这是我的索引文件，也许我的文件中有错误？的index.html：

<html>
<head>
    <title>MyApplication</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!--<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">-->
    <link href="font-awesome/css/font-awesome.css" rel="stylesheet">
    <link rel="stylesheet" href="styles.css">
    <!-- 1. Load libraries -->
    <!-- Polyfill(s) for older browsers -->
    <script src="node_modules/core-js/client/shim.min.js"></script>
    <script src="node_modules/zone.js/dist/zone.js"></script>
    <script src="node_modules/reflect-metadata/Reflect.js"></script>
    <script src="node_modules/systemjs/dist/system.src.js"></script>
    <script src="node_modules/@ng-bootstrap/ng-bootstrap"></script>
    <!-- 2. Configure SystemJS -->
    <script src="systemjs.config.js"></script>
    <script>
        System.import('app').catch(function(err){ console.error(err); });
    </script>
</head>
<!-- 3. Display the application -->
<body>
    <app>Loading...</app>
</body>
</html>

完整的systemjs.config

＆＃13;

/**
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(function(global) {
    // map tells the System loader where to look for things
    var map = {
        'app':                        'app', // 'dist',
        '@angular':                   'node_modules/@angular',
        'angular2-in-memory-web-api': 'node_modules/angular2-in-memory-web-api',
        'rxjs':                       'node_modules/rxjs',
        '@ng-bootstrap':              'node_modules/ng2-bootstrap'
    };
    // packages tells the System loader how to load when no filename and/or no extension
    var packages = {
        'app':                        { main: 'main.js',  defaultExtension: 'js' },
        'rxjs':                       { defaultExtension: 'js' },
        'angular2-in-memory-web-api': { main: 'index.js', defaultExtension: 'js' },
    };
    var ngPackageNames = [
        'common',
        'compiler',
        'core',
        'forms',
        'http',
        'platform-browser',
        'platform-browser-dynamic',
        'router',
        'router-deprecated',
        'upgrade',
    ];
    // Individual files (~300 requests):
    function packIndex(pkgName) {
        packages['@angular/'+pkgName] = { main: 'index.js', defaultExtension: 'js' };
    }
    // Bundled (~40 requests):
    function packUmd(pkgName) {
        packages['@angular/'+pkgName] = { main: '/bundles/' + pkgName + '.umd.js', defaultExtension: 'js' };
    }
    // Most environments should use UMD; some (Karma) need the individual index files
    var setPackageConfig = System.packageWithIndex ? packIndex : packUmd;
    // Add package entries for angular packages
    ngPackageNames.forEach(setPackageConfig);
    var config = {
        map: map,
        packages: packages
    };
    System.config(config);
})(this);

＆＃13;

Answer 1

我有同样的问题。基本上你需要告诉你的systemjs.config在哪里找到ng-bootstrap的所有单个组件。

根据ulubeyn的答案，我将以下内容添加到基本的systemjs.config：

/**
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(function (global) {
  // map tells the System loader where to look for things
  var map = {
    'app': 'app', // 'dist',
    '@angular': 'node_modules/@angular',
    'angular2-in-memory-web-api': 'node_modules/angular2-in-memory-web-api',
    'rxjs': 'node_modules/rxjs',
    '@ng-bootstrap': 'node_modules/@ng-bootstrap',
    '@ng-bootstrap/ng-bootstrap': 'node_modules/@ng-bootstrap/ng-bootstrap'
  };
  // packages tells the System loader how to load when no filename and/or no extension
  var packages = {
    'app': {main: 'main.js', defaultExtension: 'js'},
    'rxjs': {defaultExtension: 'js'},
    'angular2-in-memory-web-api': {main: 'index.js', defaultExtension: 'js'},
    '@ng-bootstrap/ng-bootstrap': {main: 'index.js', defaultExtension: 'js'}

  };
  var ngPackageNames = [
    'common',
    'compiler',
    'core',
    'forms',
    'http',
    'platform-browser',
    'platform-browser-dynamic',
    'router',
    'router-deprecated',
    'upgrade',
  ];

  var ngBootstrapPackageNames = [
    'accordion',
    'alert',
    'bundles',
    'buttons',
    'carousel',
    'collapse',
    'dropdown',
    'esm',
    'modal',
    'pagination',
    'popover',
    'progressbar',
    'rating',
    'tabset',
    'timepicker',
    'tooltip',
    'typeahead',
    'util'
  ];
  // Individual files (~300 requests):
  function packIndex(pkgName) {
    packages['@angular/' + pkgName] = {main: 'index.js', defaultExtension: 'js'};
  }

  // Bundled (~40 requests):
  function packUmd(pkgName) {
    packages['@angular/' + pkgName] = {main: '/bundles/' + pkgName + '.umd.js', defaultExtension: 'js'};
  }

  function ngBootstrapPackIndex(pkgName) {
    packages['@ng-bootstrap/ng-bootstrap/' + pkgName] = {main: 'index.js', defaultExtension: 'js'};
  }

  // Most environments should use UMD; some (Karma) need the individual index files
  var setPackageConfig = System.packageWithIndex ? packIndex : packUmd;
  // Add package entries for angular packages
  ngPackageNames.forEach(setPackageConfig);
  ngBootstrapPackageNames.forEach(ngBootstrapPackIndex);

  var config = {
    map: map,
    packages: packages
  };
  System.config(config);
})(this);

详细信息：

将'@ng-bootstrap/ng-bootstrap': 'node_modules/@ng-bootstrap/ng-bootstrap'添加到地图中。这将提供ng-bootstrap的路径。
将'@ng-bootstrap/ng-bootstrap': { main: 'index.js', defaultExtension: 'js' }添加到您的包中。
添加一个新阵列，提供所有ng-bootstrap组件文件夹（请参阅上例中的ngBootstrapPackageNames）。

现在将所有信息添加到地图中，并将其与相应的索引文件相关联，将所有内容整合在一起：

function ngBootstrapPackIndex(pkgName) {
   packages['@ng-bootstrap/ng-bootstrap/' + pkgName] = {main: 'index.js', defaultExtension: 'js'};
}
ngBootstrapPackageNames.forEach(ngBootstrapPackIndex);

我希望这会有所帮助，因为它适用于我的这些变化。

更新ng-bootstrap alpha 5

如果您使用的是alpha 5，请将@ng-bootstrap/ng-bootstrap变量中的packages映射更改为此;

var packages = {
     ...,
     '@ng-bootstrap/ng-bootstrap': {main: '/bundles/ng-bootstrap.js', defaultExtension: 'js'},
     ...
}

Answer 2

您的systemjs文件应如下所示：

var ngBootstrapMap = {
    '@ng-bootstrap/ng-bootstrap': '../lib/@ng-bootstrap/ng-bootstrap' //change the path according to your project structure
}

var ngBootstrapPackages = {
    '@ng-bootstrap/ng-bootstrap': { main: 'index.js', defaultExtension: 'js' }
};

var ngBootstrapPackageNames = [
    'accordion',
    'alert',
    'bundles',
    'buttons',
    'carousel',
    'collapse',
    'dropdown',
    'esm',
    'modal',
    'pagination',
    'popover',
    'progressbar',
    'rating',
    'tabset',
    'timepicker',
    'tooltip',
    'typeahead',
    'util'
];

function ngBootstrapPackIndex(pkgName) {
    ngBootstrapPackages['@ng-bootstrap/ng-bootstrap/' + pkgName] = { main: 'index.js', defaultExtension: 'js' };
}

ngBootstrapPackageNames.forEach(ngBootstrapPackIndex);

var ngBootstrapConfig = {
    map: ngBootstrapMap,
    packages: ngBootstrapPackages
};

System.config(ngBootstrapConfig);

基本上，它在@ ng-bootstrap / ng-bootstrap文件夹中查找index.js文件，对于每个组件，它在@ ng-bootstrap / ng-bootstrap / {componentName}

我希望它可以帮到你

如何通过system.js向Angular2添加引导程序

完整的systemjs.config

2 个答案: