【java】跨域控制

package com.copote.filter;

import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author 
 * 允许跨域
 */

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class CrossFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void destroy() {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        response.setHeader("Access-Control-Allow-Origin",((HttpServletRequest) servletRequest).getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH");
        response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type,Token,Accept, Connection, User-Agent, Cookie");
        response.setHeader("Access-Control-Max-Age", "3628800");
        response.addHeader("Access-Control-Allow-Credentials", "true");
        response.setCharacterEncoding("UTF-8");
//        response.setContentType("application/json");
        filterChain.doFilter(servletRequest, response);
    }
}