我尝试导入角度素材和npm安装,现在我的整个应用程序坏了,我不知道它出错了。我在systems.js和package.json中更改了配置,我在@ angular / platform-browser-dynamic和app / app.module上都收到404 GET错误。谁能告诉我哪里出错了?非常感谢!!!
这是我的主要内容:
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { RouterModule } from '@angular/router';
import { MaterialModule } from '@angular/material';
import { EmployeeFilterPipe } from './employees/employee-filter.pipe'
import { AppComponent } from './app.component';
import { DataService } from './shared/data.service';
import {EmployeesListComponent} from './employees/employees-list.component';
import { EmployeeDetailComponent } from './employees/employee-detail.component';
@NgModule({
imports: [
BrowserModule,
FormsModule,
HttpModule,
MaterialModule,
RouterModule.forRoot([
{path: 'employees', component: EmployeesListComponent},
{path: 'employee/:id', component: EmployeeDetailComponent }
], {useHash: true})
],
declarations: [
AppComponent,
EmployeesListComponent,
EmployeeFilterPipe,
EmployeeDetailComponent
],
providers: [ DataService, EmployeeFilterPipe ],
bootstrap: [ AppComponent ]
})
export class AppModule { }
app.module.ts
{
"name": "angular-quickstart",
"version": "1.0.0",
"description": "QuickStart package.json from the documentation, supplemented with testing support",
"scripts": {
"build": "tsc -p src/",
"build:watch": "tsc -p src/ -w",
"build:e2e": "tsc -p e2e/",
"serve": "lite-server -c=bs-config.json",
"serve:e2e": "lite-server -c=bs-config.e2e.json",
"prestart": "npm run build",
"start": "concurrently \"npm run build:watch\" \"npm run serve\"",
"pree2e": "npm run build:e2e",
"e2e": "concurrently \"npm run serve:e2e\" \"npm run protractor\" --kill-others --success first",
"preprotractor": "webdriver-manager update",
"protractor": "protractor protractor.config.js",
"pretest": "npm run build",
"test": "concurrently \"npm run build:watch\" \"karma start karma.conf.js\"",
"pretest:once": "npm run build",
"test:once": "karma start karma.conf.js --single-run",
"lint": "tslint ./src/**/*.ts -t verbose"
},
"keywords": [],
"author": "",
"license": "MIT",
"devDependencies": {
"concurrently": "^3.2.0",
"lite-server": "^2.2.2",
"typescript": "~2.0.10",
"canonical-path": "0.0.2",
"tslint": "^3.15.1",
"lodash": "^4.16.4",
"jasmine-core": "~2.4.1",
"karma": "^1.3.0",
"karma-chrome-launcher": "^2.0.0",
"karma-cli": "^1.0.1",
"karma-jasmine": "^1.0.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~4.0.14",
"rimraf": "^2.5.4",
"@types/node": "^6.0.46",
"@types/jasmine": "2.5.36"
},
"repository": {},
"dependencies": {
"@angular/material": "^2.0.0-beta.2",
"@angular/common": "2.0.0",
"@angular/compiler": "2.0.0",
"@angular/core": "2.0.0",
"@angular/forms": "2.0.0",
"@angular/http": "2.0.0",
"@angular/platform-browser": "2.0.0",
"@angular/platform-browser-dynamic": "2.0.0",
"@angular/router": "3.0.0",
"core-js": "^2.4.1",
"reflect-metadata": "^0.1.3",
"rxjs": "5.0.0-beta.12",
"systemjs": "0.19.27",
"zone.js": "^0.6.23",
"bootstrap": "^3.3.6"
}
}
的package.json:
/**
* System configuration for Angular samples
* Adjust as necessary for your application needs.
*/
(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',
'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
defaultExtension: 'js'
},
rxjs: {
defaultExtension: 'js'
}
}
});
})(this);
systemjs.config.js:
Error: Error: XHR error (404 Not Found) loading http://localhost:3000/@angular/platform-browser-dynamic
at XMLHttpRequest.desc.set.wrapFn [as _onreadystatechange] (http://localhost:3000/node_modules/zone.js/dist/zone.js:698:29)
at ZoneDelegate.invokeTask (http://localhost:3000/node_modules/zone.js/dist/zone.js:265:35)
at Zone.runTask (http://localhost:3000/node_modules/zone.js/dist/zone.js:154:47)
at XMLHttpRequest.ZoneTask.invoke (http://localhost:3000/node_modules/zone.js/dist/zone.js:335:33)
Error loading http://localhost:3000/@angular/platform-browser-dynamic as "@angular/platform-browser-dynamic" from http://localhost:3000/main.js
这是我在chrome dev工具上的错误消息:
import csv
import pandas as pd
import numpy as np
def open_elves():
with open('elves.csv') as csvjawn:
readCS = csv.reader(csvjawn, delimiter = ',')
for row in readCS:
return row
x = pd.DataFrame(open_elves())
print (x)
答案 0 :(得分:4)
我有点弄清楚为什么浏览器找不到platform-browser-dynamic
。
当文件夹实际位于http://localhost:3000/@angular/platform-browser-dynamic
时,浏览器正在寻找http://localhost:3000/node_modules/@angular/platform-browser-dynamic
。
所以我不得不手动将systemsjs文件中的路径更改为:
'@angular/platform-browser-dynamic': 'node_modules/@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js'
,
因为它没有读取npm的别名路径:..
所以现在我的systemsjs文件看起来像这样:
/**
* System configuration for Angular samples
* Adjust as necessary for your application needs.
*/
(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': 'node_modules/@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',
'@angular/material': 'npm:@angular/material/bundles/material.umd.js',
// other libraries
'rxjs': 'npm:rxjs',
'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
defaultExtension: 'js'
},
rxjs: {
defaultExtension: 'js'
}
}
});
})(this);
我知道这不是最优化的解决方案,我不明白为什么systemsjs文件没有为此应用别名路径,但它现在解决了问题。如果有人有更准确的解决方案,我会非常感激!谢谢!