CORS Angular 8它给了我

问题描述 投票:-3回答:1

我的项目中存在CORS问题。我从Angular 8开始:

 httpOptions = { 
      headers: new HttpHeaders({
        'Content-Type':'application/json',
        'Authorization':'Basic bm92Z*********************'
      })
    };

而且我确实以这种方式进行操作:

public getStudents() : Observable<IStudent[]>{
  return this.http.get<IStudent[]>(this.writeUrl, this.httpOptions)...// this.writeUrl is the request  url
}

在使用Java的服务器中,我这样做:

public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) {

    responseContext.getHeaders().add("Access-Control-Allow-Origin", "*");
    responseContext.getHeaders().add("Access-Control-Allow-Headers",
    "origin, content-type, accept, authorization");
    responseContext.getHeaders().add("Access-Control-Allow-Credentials", "true");
    responseContext.getHeaders().add("Access-Control-Allow-Methods",
    "GET, POST, PUT, DELETE, OPTIONS, HEAD");

    }

它给了我CORS,但我不知道为什么,有人可以帮助我吗?

java angular http-headers servlet-filters angular8
1个回答
0
投票

Angular服务器在http://localhost:4200/上运行,而Spring Boot服务器在http://localhost:8080/上运行。

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