CorsFilter 过滤器解决跨域

package com.weiwei.oms.filter;

import org.springframework.stereotype.Component;

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

public class CORSFilter implements Filter {
    //这里是前端请求头,那个跨域就添加到这里就行了
    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 servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse httpServletResponse = (HttpServletResponse) servletResponse;
        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", "accesstoken");
        httpServletResponse.setHeader("Access-Control-Request-Headers", "accesstoken");
        httpServletResponse.setHeader("Expires", "-1");
        httpServletResponse.setHeader("Cache-Control", "no-cache");
        httpServletResponse.setHeader("pragma", "no-cache");
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {
    }
}

web.xml配置

​​​​​​​<filter>
    <filter-name>CORSFilter</filter-name>
    <filter-class>com.weiwei.oms.filter.CORSFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>CORSFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>