CorsFilter 過濾器解決跨域

不多逼逼,直接貼代碼,前端所有請求頭都放在headers里面就行

@Component
public class CorsFilter {

    //這里是前端請求頭,那個跨域就添加到這里就行了
    private static final String headers = "User-Agent,Cache-Control,Content-type,Date,Server,withCredentials," +
            "appversion";

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

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {

        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
        httpServletResponse.setHeader("Access-Control-Allow-Origin", "*");
        httpServletResponse.setHeader("Access-Control-Allow-Headers", headers);
        httpServletResponse.setHeader("Access-Control-Allow-Credentials", "true");
        httpServletResponse.setHeader("Access-Control-Allow-Methods",
                "GET, POST, PUT, DELETE, OPTIONS, HEAD");
        httpServletResponse.setHeader("Access-Control-Max-Age", "3600");
        httpServletResponse.setHeader("Access-Control-Expose-Headers", "usertoken");
        httpServletResponse.setHeader("Access-Control-Request-Headers", "usertoken");
        httpServletResponse.setHeader("Expires", "-1");
        httpServletResponse.setHeader("Cache-Control", "no-cache");
        httpServletResponse.setHeader("pragma", "no-cache");

        ServletRequest requestWrapper = null;
        if (request instanceof HttpServletRequest) {
            requestWrapper = new RequestWrapper((HttpServletRequest) request);
        }
        if (null == requestWrapper) {
            chain.doFilter(request, response);
        } else {
            chain.doFilter(requestWrapper, response);
        }
    }

    @Override
    public void destroy() {

    }

}