使用tomcat在angular中使用CORS

<filter>
  <filter-name>CorsFilter</filter-name>
  <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
</filter>
<filter-mapping>
  <filter-name>CorsFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

<init-param>
  <param-name>cors.allowed.origins</param-name>
  <param-value>*</param-value>
</init-param>
<init-param>
  <param-name>cors.allowed.methods</param-name>
  <param-value>GET,POST,PUT,DELETE,OPTIONS</param-value>
</init-param>
<init-param>
  <param-name>cors.allowed.headers</param-name>
  <param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value>
</init-param>

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

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

constructor(private http: HttpClient) { }

getData() {
  return this.http.get('http://your-server-address/api/data', httpOptions);
}