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java - 白标错误页面 404 spring boot angular 5

转载 作者：太空狗 更新时间：2023-10-29 19:33:32 25 4
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我正在开发一个 Web 应用程序，我的后端是 spring boot，前端是在 4200 端口上运行的 Angular 5。我在 angular 5 登录、家庭应用程序、搜索中有四个组件。当我启动 spring boot 项目和 angular 项目时，我能够通过提供 http://localhost:4200 来导航登录页面。所以它导航到 http://localhost:4200/login。

但是当我刷新该页面时，出现以下错误。 enter image description here

这是我的代码:

代理.conf.json

    {
    "/": {
        "target": "http://localhost:8081",
        "secure": false
    }
}

package.json:

 {  "name": "cyber-security-vw",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve --proxy-config proxy.conf.json",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.2.0",
    "@angular/common": "^5.2.0",
    "@angular/compiler": "^5.2.0",
    "@angular/core": "^5.2.0",
    "@angular/forms": "^5.2.0",
    "@angular/http": "^5.2.0",
    "@angular/platform-browser": "^5.2.0",
    "@angular/platform-browser-dynamic": "^5.2.0",
    "@angular/router": "^5.2.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.5.6",
    "zone.js": "^0.8.19"
  },
  "devDependencies": {
    "@angular/cli": "1.6.5",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "~2.5.3"
  }
}

索引.html

    <!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>CyberSecurityVw</title>
  <base href="/">

  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
  <app-root></app-root>
</body>
</html>

app.component.html

<div align="center">
  <router-outlet></router-outlet>
</div>

应用路由.module.ts

import { ApplicationComponent } from './application/application.component';
import { NavigationComponent } from './navigation/navigation.component';
import { HomepageComponent } from './homepage/homepage.component';
import { AppComponent } from './app.component';
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { CommonModule } from '@angular/common';
import { LoginComponent } from './login/login.component';



const routes: Routes = [
  { path: '', redirectTo: '/login', pathMatch: 'full' },
  { path: 'login', component: LoginComponent },
  { path: 'home', component: HomepageComponent },
  { path: 'application', component: ApplicationComponent },
  { path: 'navigation', component: NavigationComponent },
];

@NgModule({
  imports: [CommonModule, RouterModule.forRoot(routes)],
  exports: [RouterModule],
  declarations: []
})

export class AppRoutingModule { }

Spring Boot 主类

package com.vl.cybersecurity;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
@SpringBootApplication
public class CyberSecurityApplication {

    public static void main(String[] args) {
        SpringApplication.run(CyberSecurityApplication.class, args);
    }
}

其他包:

com.vl.cybersecurity.controller     
com.vl.cybersecurity.entity
com.vl.cybersecurity.service
com.vl.cybersecurity.dao

最佳答案

我也遇到了同样的问题。这是对我有用的解决方案。

我在我的应用程序路由模块中启用了 hash(#)。

如何启用？

第 1 步:打开 app-routing.module.ts第 2 步:在 RouterModule.forRoot 中添加路由时，将可选参数 useHash 作为真值传递。

 @NgModule({
  imports: [RouterModule.forRoot(routes, { useHash: true })],
  exports: [RouterModule],
})

第 3 步:保存文件。它应该可以解决这个问题。您会在 url 中注意到的唯一不同之处是端口号 http://localhost:4800/#/dashboard

之后的哈希 (#)

还有另一种方法可以做同样的事情，检查this

关于java - 白标错误页面 404 spring boot angular 5，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48740997/

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