pd *_*had 12 angular2-http angular-cli angular
我正在为我的Angular2应用程序使用angular-cli.每当我尝试在我的组件/服务中加载angular2/http时,cli终端中没有显示错误,但是在我的浏览器控制台中它显示了这个 -
获取http:// localhost:4200/angular2/http 404(未找到)
未处理的Promise拒绝:错误:XHR错误(404 Not Found) 在XMLHttpRequest.desc.set.wrapFn [as_onreadystatechange]上加载http:// localhost:4200/angular2/http(http:// localhost:4200/vendor/zone. js/dist/zone.js:769:30)在Zone.runTask的ZoneDelegate.invokeTask(http:// localhost:4200/vendor/zone.js/dist/zone.js:356:38)(http:// localhost:4200/vendor/zone.js/dist/zone.js:256:48)在XMLHttpRequest.ZoneTask.invoke(http:// localhost:4200/vendor/zone.js/dist/zone.js:423:34))从http:// localhost:4200/app/js-tree.component.js加载http:// localhost:4200/angular2/http为"angular2/http"时 出错 ; 区域:; 任务:Promise.then; 值:错误:错误:XHR错误(404 Not Found) 在XMLHttpRequest.desc.set.wrapFn [as_onreadystatechange](http:// localhost:4200/vendor/zone)上加载 http:// localhost:4200/angular2/http . js/dist/zone.js:769:30)在Zone.runTask的ZoneDelegate.invokeTask(http:// localhost:4200/vendor/zone.js/dist/zone.js:356:38)(http:// localhost:4200/vendor/zone.js/dist/zone.js:256:48)在XMLHttpRequest.ZoneTask.invoke(http:// localhost:4200/vendor/zone.js/dist/zone.js:423:34))从http:// localhost:4200/app/js-tree.component.js加载http:// localhost:4200/angular2/http为"angular2/http"时 出错
我的angular-cli版本是0.0.39
节点:4.2.2
这是我的system-config.ts
const map: any = {
};
/** User packages configuration. */
const packages: any = {
};
const barrels: string[] = [
// Angular specific barrels.
'@angular/core',
'@angular/common',
'@angular/compiler',
'@angular/http',
'@angular/router',
'@angular/platform-browser',
'@angular/platform-browser-dynamic',
// Thirdparty barrels.
'rxjs',
// App specific barrels.
'app',
'app/shared',
'app/tree',
'app/tree/item',
/** @cli-barrel */
];
const cliSystemConfigPackages: any = {};
barrels.forEach((barrelName: string) => {
cliSystemConfigPackages[barrelName] = { main: 'index' };
});
/** Type declaration for ambient System. */
declare var System: any;
// Apply the CLI SystemJS configuration.
System.config({
map: {
'@angular': 'vendor/@angular',
'rxjs': 'vendor/rxjs',
'main': 'main.js'
},
packages: cliSystemConfigPackages
});
// Apply the user's configuration.
System.config({ map, packages });
还有我的package.json
{
"name": "pankha",
"version": "0.0.0",
"license": "MIT",
"angular-cli": {},
"scripts": {
"start": "ng server",
"postinstall": "typings install",
"lint": "tslint \"src/**/*.ts\"",
"format": "clang-format -i -style=file --glob=src/**/*.ts",
"pree2e": "webdriver-manager update",
"e2e": "protractor"
},
"private": true,
"dependencies": {
"@angular/common": "2.0.0-rc.1",
"@angular/compiler": "2.0.0-rc.1",
"@angular/core": "2.0.0-rc.1",
"@angular/platform-browser": "2.0.0-rc.1",
"@angular/platform-browser-dynamic": "2.0.0-rc.1",
"@angular/router": "2.0.0-rc.1",
"es6-shim": "^0.35.0",
"reflect-metadata": "0.1.3",
"rxjs": "5.0.0-beta.6",
"systemjs": "0.19.26",
"zone.js": "^0.6.12"
},
"devDependencies": {
"angular-cli": "0.0.*",
"clang-format": "^1.0.35",
"codelyzer": "0.0.14",
"ember-cli-inject-live-reload": "^1.4.0",
"jasmine-core": "^2.4.1",
"jasmine-spec-reporter": "^2.4.0",
"karma": "^0.13.15",
"karma-chrome-launcher": "^0.2.3",
"karma-jasmine": "^0.3.8",
"protractor": "^3.3.0",
"ts-node": "^0.5.5",
"tslint": "^3.6.0",
"typescript": "^1.8.10",
"typings": "^0.8.1"
}
}
和我的index.html
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Pankha</title>
<base href="/">
{{content-for 'head'}}
<link rel="icon" type="image/x-icon" href="favicon.ico">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Service worker support is disabled by default.
Install the worker script and uncomment to enable.
Only enable service workers in production.
<script type="text/javascript">
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('/worker.js').catch(function(err) {
console.log('Error installing service worker: ', err);
});
}
</script>
-->
</head>
<body>
<pankha-app>Loading...</pankha-app>
<script src="vendor/es6-shim/es6-shim.js"></script>
<script src="vendor/reflect-metadata/Reflect.js"></script>
<script src="vendor/systemjs/dist/system.src.js"></script>
<script src="vendor/zone.js/dist/zone.js"></script>
<!-- <script src="node_modules/angular2/bundles/http.dev.js"></script> -->
<script>
System.import('system-config.js').then(function () {
System.import('main');
}).catch(console.error.bind(console));
</script>
</body>
</html>
我认为您忘记将http.dev.js文件包含在主HTML文件中:
<script src="node_modules/angular2/bundles/http.dev.js"></script>
请注意,这仅适用于beta版本(不是rc版本),但由于您使用该angular2/http模块,我猜您使用的是beta版本.
我找到了解决方案.我没有使用angular2的beta版本所以我不得不打开我的package.json并在依赖项下添加这一行
"@angular/http": "2.0.0-rc.1",
然后我打开我的终端并键入
npm install
它更新了我的system-config.ts
const barrels: string[] = [
// Angular specific barrels.
'@angular/core',
'@angular/common',
'@angular/compiler',
'@angular/http',
'@angular/router',
'@angular/platform-browser',
'@angular/platform-browser-dynamic',
// Thirdparty barrels.
'rxjs',
// App specific barrels.
'app',
'app/shared',
'app/tree',
'app/tree/item',
/** @cli-barrel */
];
它在哪里
const barrels: string[] = [
// Angular specific barrels.
'@angular/core',
'@angular/common',
'@angular/compiler',
'@angular/router',
'@angular/platform-browser',
'@angular/platform-browser-dynamic',
// Thirdparty barrels.
'rxjs',
// App specific barrels.
'app',
'app/shared',
'app/tree',
'app/tree/item',
/** @cli-barrel */
];
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