跨域问题

来源：互联网发布：如何上淘宝网购到付款编辑：程序博客网时间：2024/05/02 09:02

后台写个过滤器就好了

    package com.springapp.mvc.filter;    import javax.servlet.*;    import javax.servlet.http.HttpServletResponse;    import java.io.IOException;    /**     * Created by TaoYuan on 2017/4/26 0026.     */    public class CrossDomainFilter 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;            response.setHeader("Access-Control-Allow-Origin", "*");            response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");            response.setHeader("Access-Control-Max-Age", "3600");            response.setHeader("Access-Control-Allow-Headers", "x-requested-with, Content-Type");            response.setHeader("Access-Control-Allow-Credentials", "true");            filterChain.doFilter(servletRequest, servletResponse);        }        @Override        public void destroy() {        }    }

web.xml设置通配

        <filter>            <filter-name>crossDomainFilter</filter-name>            <filter-class>com.springapp.mvc.filter.CrossDomainFilter</filter-class>        </filter>        <filter-mapping>            <filter-name>crossDomainFilter</filter-name>            <url-pattern>/*</url-pattern>        </filter-mapping>

在Spring Boot中配置

    @Bean    public FilterRegistrationBean catFilter() {        FilterRegistrationBean registration = new FilterRegistrationBean();        CatFilter filter = new CatFilter();        registration.setName("cat-filter");        registration.setOrder(1);        registration.setFilter(filter);        List<String> servletList = new ArrayList<String>();        servletList.add("dispatcherServlet");        servletList.add("crossFilter");//可以设置多个        registration.setServletNames(servletList);        return registration;    }    @Bean(name = "crossFilter")    public Filter crossFilter() {        return new CrossFilter();    }

1 0