springMvc跨域处理

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前后端分离就要使用跨域访问，本文针对<spring.version>4.1.3.RELEASE</spring.version>处理

import org.springframework.stereotype.Component;import javax.servlet.*;import javax.servlet.http.HttpServletResponse;import java.io.IOException;/** * 类描述： * <p> * author：xjh * version v0.1 * 时间：2017/12/14 */@Componentpublic class MyCORSFilter implements Filter {    @Override    public void init(FilterConfig filterConfig) throws ServletException {    }    @Override    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {        HttpServletResponse response = (HttpServletResponse) servletResponse;        String origin = (String) servletRequest.getRemoteHost()+":"+servletRequest.getRemotePort();        response.setHeader("Access-Control-Allow-Origin", "*");        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");        response.setHeader("Access-Control-Max-Age", "3600");        response.setHeader("Access-Control-Allow-Headers", "x-requested-with,Authorization");        response.setHeader("Access-Control-Allow-Credentials","true");        filterChain.doFilter(servletRequest, servletResponse);    }    @Override    public void destroy() {    }}

然后再web.xml中配置该过滤器

    <filter>        <filter-name>cors</filter-name>        <filter-class>com.dahai.filter.MyCORSFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>cors</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>

请求成功

这里写图片描述

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