PC
corsfilter过滤器的使用
第一步：新建CorsFilter，在过滤器中设置相关请求头package com.handlecar.basf_pmdb_service.filter; import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.*;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException; public class CorsFilter extends OncePerRequestFilter {
//public class CorsFilter implements Filter {// static final String ORIGIN = 'Origin'; protected void doFilterInternal( HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException { // String origin = request.getHeader(ORIGIN); response.setHeader('Access-Control-Allow-Origin', '*');//* or origin as u prefer
response.setHeader('Access-Control-Allow-Credentials', 'true'); response.setHeader('Access-Control-Allow-Methods', 'PUT, POST, GET, OPTIONS, DELETE'); response.setHeader('Access-Control-Max-Age', '3600');// response.setHeader('Access-Control-Allow-Headers', 'content-type, authorization'); response.setHeader('Access-Control-Allow-Headers', 'Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With, Authorization'); response.setHeader('XDomainRequestAllowed','1'); //使前端能够获取到 response.setHeader('Access-Control-Expose-Headers','download-status,download-filename,download-message'); if (request.getMethod().equals('OPTIONS'))// response.setStatus(HttpServletResponse.SC_OK); response.setStatus(HttpServletResponse.SC_NO_CONTENT); else filterChain.doFilter(request, response); }
// @Override// public void doFilter(ServletRequest req, ServletResponse res,// FilterChain chain) throws IOException, ServletException {//// HttpServletResponse response = (HttpServletResponse) res;// //测试环境用【*】匹配，上生产环境后需要切换为实际的前端请求地址// response.setHeader('Access-Control-Allow-Origin', '*');// response.setHeader('Access-Control-Allow-Methods', 'POST, GET, OPTIONS, DELETE');//// response.setHeader('Access-Control-Max-Age', '0');//// response.setHeader('Access-Control-Allow-Headers', 'Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With, auth');//// response.setHeader('Access-Control-Allow-Credentials', 'true');！
网络虽好，但要注意劳逸结合哦！
如果是青少年，小编在这里提示大家千万不能沉迷网络！