Angular 2 Spring Boot登录CORS问题

Question

我正在尝试开发一个应用程序,其中Spring Boot用于后端,Angular 2用于前端.

实际上我有连接问题,当我从spring访问mvc登录页面时.

我遇到以下问题:

( 安慰 )

(Angular 2 Code)

春季代码

我为FrontEnd端口设置了全局Cors配置.我的请求返回响应状态200.但我无法访问响应,因为我在控制台中收到错误消息.

Spring dosnt有错误.

Answer 1

您需要了解Cors配置的第一件事是在后端添加.您不需要为Angular2 App的每个请求发送cors标头.了解这一点,通过在Spring安全配置类中添加全局CORS配置可以轻松解决此问题.

首先,您需要创建一个过滤器bean:

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class MyCorsFilter implements Filter{

public MyCorsFilter () {
    super();
}

@Override
public final void doFilter(final ServletRequest req, final ServletResponse res, final FilterChain chain) throws IOException, ServletException {
    final HttpServletResponse response = (HttpServletResponse) res;
    response.setHeader("Access-Control-Allow-Origin", "http://localhost:3000");

    // without this header jquery.ajax calls returns 401 even after successful login and SSESSIONID being succesfully stored.
    response.setHeader("Access-Control-Allow-Credentials", "true");

    response.setHeader("Access-Control-Allow-Methods", "POST, PUT, GET, OPTIONS, DELETE");
    response.setHeader("Access-Control-Max-Age", "3600");
    response.setHeader("Access-Control-Allow-Headers", "X-Requested-With, Authorization, Origin, Content-Type, Version");
    response.setHeader("Access-Control-Expose-Headers", "X-Requested-With, Authorization, Origin, Content-Type");

    final HttpServletRequest request = (HttpServletRequest) req;
    if (!request.getMethod().equals("OPTIONS")) {
        chain.doFilter(req, res);
    } else {
        // do not continue with filter chain for options requests
    }
}

@Override
public void destroy() {

} 

@Override
public void init(FilterConfig filterConfig) throws ServletException {       
}
}

第2步:在Spring安全配置类中添加:

@Autowired
private MyCorsFilter myCorsFilter;


//CORS
http.addFilterBefore(myCorsFilter, ChannelProcessingFilter.class);

编辑:此配置假设您在localhost:3000上运行angular2应用程序