spring boot cors解决跨域问题

新增俩两个配置类，亲测有效。

1、CorsFilter.class

代码语言：javascript复制

import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
 * TongYao_Html >>> 【com.example.tongyao.system.config】
 * CorsFilter
 *
 * @author: tongyao
 * @since: 2020-09-25 21:18
 */

@Component
public class CorsFilter implements Filter {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse httpResponse = (HttpServletResponse) servletResponse;
        HttpServletRequest httpRequest = (HttpServletRequest) servletRequest;
        httpResponse.setHeader("Access-Control-Allow-Origin", httpRequest.getHeader("Origin"));
        httpResponse.setHeader("Access-Control-Allow-Methods", httpRequest.getMethod());
        httpResponse.setHeader("Access-Control-Max-Age", "3600");
        httpResponse.setHeader("Access-Control-Allow-Headers", httpRequest.getHeader("Access-Control-Request-Headers"));
        filterChain.doFilter(servletRequest, servletResponse);
    }

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

    }

    @Override
    public void destroy() {

    }
}

2、StatelessAuthcFilter

代码语言：javascript复制

package com.example.tongyao.system.config;

import org.apache.shiro.web.filter.AccessControlFilter;
import org.apache.shiro.web.util.WebUtils;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * TongYao_Html >>> 【com.example.tongyao.system.config】
 * StatelessAuthcFilter
 *
 * @author: tongyao
 * @since: 2020-09-25 21:16
 */

public class StatelessAuthcFilter extends AccessControlFilter {
    @Override
    protected boolean isAccessAllowed(ServletRequest servletRequest, ServletResponse servletResponse, Object o) throws Exception {
        return false;
    }

    @Override
    protected boolean onAccessDenied(ServletRequest servletRequest, ServletResponse servletResponse) throws Exception {
        HttpServletRequest httpRequest = WebUtils.toHttp(servletRequest);
        HttpServletResponse httpResponse = WebUtils.toHttp(servletResponse);
        if (httpRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
            httpResponse.setHeader("Access-control-Allow-Origin", httpRequest.getHeader("Origin"));
            httpResponse.setHeader("Access-Control-Allow-Methods", httpRequest.getMethod());
            httpResponse.setHeader("Access-Control-Allow-Headers", httpRequest.getHeader("Access-Control-Request-Headers"));
            httpResponse.setStatus(HttpStatus.OK.value());
            return false;
        }
        return super.preHandle(servletRequest, servletResponse);
    }
}

class 配置

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