springboot+shiro 跨域解决（OPTIONS）

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.Map;

//需要认证的API被调用前执行的拦截器也叫过滤器

public class TokenFilter extends AuthenticationFilter {

private final Logger logger = LoggerFactory.getLogger(TokenFilter.class);

@Override

protected boolean onAccessDenied(ServletRequest servletRequest, ServletResponse servletResponse) {

HttpServletRequest request = (HttpServletRequest) servletRequest;

HttpServletResponse response = (HttpServletResponse) servletResponse;

try {

//这几句代码是关键

if (“OPTIONS”.equals(request.getMethod())){

response.setStatus(org.apache.http.HttpStatus.SC_NO_CONTENT);;

logger.info(“OPTIONS 放行”);