import java.io.IOException;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Component;@Componentpublic class SimpleCORSFilter implements Filter {private final Logger log = LoggerFactory.getLogger(SimpleCORSFilter.class);public SimpleCORSFilter() { log.info("SimpleCORSFilter init");}@Overridepublic void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) res; response.setHeader("Access-Control-Allow-Origin", request.getHeader("Origin")); response.setHeader("Access-Control-Allow-Credentials", "true"); response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE"); response.setHeader("Access-Control-Max-Age", "3600"); response.setHeader("Access-Control-Allow-Headers", "Content-Type, Accept, X-Requested-With, remember-me"); chain.doFilter(req, res);}@Overridepublic void init(FilterConfig filterConfig) {}@Overridepublic void destroy() {}}无需额外定义此过滤器，只需添加此类。Spring将被扫描并为您添加。SimpleCORSFilter。这是示例：spring-enable-
cors
