1. 在Spring Boot应用程序中添加CORS配置：

@Configuration @EnableWebMvc public class WebConfig implements WebMvcConfigurer {

@Override
public void addCorsMappings(CorsRegistry registry) {
    registry.addMapping("/**")
        .allowedOrigins("*")
        .allowedMethods("GET", "POST", "PUT", "DELETE")
        .allowedHeaders("*");
}

}

2. 在Angular 10应用程序中使用HttpClientModule并在请求中添加头部信息：

import { HttpClient, HttpHeaders } from '@angular/common/http';

const httpOptions = { headers: new HttpHeaders({ 'Content-Type': 'application/json', 'Access-Control-Allow-Origin': '*' }) };

@Injectable({ providedIn: 'root' }) export class ApiService { apiUrl = 'http://localhost:8080/api';

constructor(private http: HttpClient) {}

getUsers(): Observable { return this.http.get(${this.apiUrl}/users, httpOptions); } }

在上面的代码中，我们在httpOptions中添加了Access-Control-Allow-Origin标头，这样就可以解决CORS问题。