像本主题中一样，我在弹簧安全性和角度应用程序方面遇到问题。当我单击身份验证按钮时，即使输入了正确的数据，我也会在控制台中看到：

已从CORS策略阻止对来自源’ http：// localhost：4200 ‘的’
http：// localhost：8080 / api / v1 /
basicauth ‘
处的XMLHttpRequest的访问：对预检请求的响应未通过访问控制检查：它没有HTTP正常状态。

和

GET http：// localhost：8080 / api / v1 /
basicauth net :: ERR_FAILED

这是我的角度代码：

验证服务

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { map } from 'rxjs/operators';

@Injectable({
  providedIn: 'root'
})
export class AuthenticationService {

  // BASE_PATH: 'http://localhost:8080'
  USER_NAME_SESSION_ATTRIBUTE_NAME = 'authenticatedUser'

  public username: String;
  public password: String;

  constructor(private http: HttpClient) {

  }

  authenticationService(username: String, password: String) {
    return this.http.get(`http://localhost:8080/api/v1/basicauth`,
      { headers: { authorization: this.createBasicAuthToken(username, password) } }).pipe(map((res) => {
        this.username = username;
        this.password = password;
        this.registerSuccessfulLogin(username, password);
      }));
  }

  createBasicAuthToken(username: String, password: String) {
    return 'Basic ' + window.btoa(username + ":" + password)
  }

  registerSuccessfulLogin(username, password) {
    sessionStorage.setItem(this.USER_NAME_SESSION_ATTRIBUTE_NAME, username)
  }

  logout() {
    sessionStorage.removeItem(this.USER_NAME_SESSION_ATTRIBUTE_NAME);
    this.username = null;
    this.password = null;
  }

  isUserLoggedIn() {
    let user = sessionStorage.getItem(this.USER_NAME_SESSION_ATTRIBUTE_NAME)
    if (user === null) return false
    return true
  }

  getLoggedInUserName() {
    let user = sessionStorage.getItem(this.USER_NAME_SESSION_ATTRIBUTE_NAME)
    if (user === null) return ''
    return user
  }
}

login.component.ts

import { Component, OnInit } from '@angular/core';
import { Router, ActivatedRoute } from '@angular/router';
import { AuthenticationService } from './auth.service';

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
  styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {

  username: string;
  password : string;
  errorMessage = 'Invalid Credentials';
  successMessage: string;
  invalidLogin = false;
  loginSuccess = false;

  constructor(
    private route: ActivatedRoute,
    private router: Router,
    private authenticationService: AuthenticationService) {   }

  ngOnInit() {
  }

  handleLogin() {
    this.authenticationService.authenticationService(this.username, this.password).subscribe((result)=> {
      this.invalidLogin = false;
      this.loginSuccess = true;
      this.successMessage = 'Login Successful.';
      this.router.navigate(['/products']);
    }, () => {
      console.log(this.username);
      console.log(this.password);
      this.invalidLogin = true;
      this.loginSuccess = false;
    });      
  }
}

http.service.ts

import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent, HttpHeaders } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';
import { AuthenticationService } from './login/auth.service';

@Injectable()
export class HttpInterceptorService implements HttpInterceptor {

    constructor(private authenticationService: AuthenticationService) { }

    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
        if (this.authenticationService.isUserLoggedIn() && req.url.indexOf('basicauth') === -1) {
            const authReq = req.clone({
                headers: new HttpHeaders({
                    'Content-Type': 'application/json',
                    'Authorization': `Basic ${window.btoa(this.authenticationService.username + ":" + this.authenticationService.password)}`
                })
            });
            return next.handle(authReq);
        } else {
            return next.handle(req);
        }
    }
}

login.component.html

<div class="container col-lg-6">
  <h1 class="text-center">Login</h1>
  <div class="card">
    <div class="card-body">
      <form class="form-group">
        <div class="alert alert-warning" *ngIf='invalidLogin'>{{errorMessage}}</div>
        <div class="alert alert-success" *ngIf='loginSuccess'>{{successMessage}}</div>
        <div class="form-group">
          <label for="email">User Name :</label>
          <input type="text" class="form-control" id="username" [(ngModel)]="username" placeholder="Enter User Name"
            name="username">
        </div>
        <div class="form-group">
          <label for="pwd">Password:</label>
          <input type="password" class="form-control" [(ngModel)]="password" id="password" placeholder="Enter password"
            name="password">
        </div>
        <button (click)=handleLogin() class="btn btn-success">Login</button>
      </form>
    </div>
  </div>
</div>

而我在Java中的代码：

package com.shop.shop.security;

import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception{
        httpSecurity.csrf().disable()
                .authorizeRequests()
                .antMatchers(HttpMethod.OPTIONS, "/**")
                .permitAll()
                .anyRequest()
                .authenticated()
                .and()
                .httpBasic();
    }

}



package com.shop.shop.security;

import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@CrossOrigin(origins = "http://localhost:4200")
@RestController
@RequestMapping("api/v1")
public class BasicAuthController {

    @GetMapping(path = "/basicauth")
    public AuthenticationBean basicauth(){
        return new AuthenticationBean("You are authenticated!");
    }

}



package com.shop.shop.security;

public class AuthenticationBean {

    private String message;

    public AuthenticationBean(String message) {
        this.message = message;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    @Override
    public String toString() {
        return String.format("HelloWorldBean [message=%s]", message);
    }
}

您能帮我解决和理解这种问题吗？谢谢！:)