Java中后台解决请求跨域问题
新建一个过滤器Filter
public class CorsFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { // TODO Auto-generated method stub } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { // TODO Auto-generated method stub HttpServletResponse res = (HttpServletResponse) response; res.setContentType("text/html;charset=UTF-8"); res.setHeader("Access-Control-Allow-Origin", "*"); res.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE"); res.setHeader("Access-Control-Max-Age", "0"); res.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,userId,token"); res.setHeader("Access-Control-Allow-Credentials", "true"); res.setHeader("XDomainRequestAllowed", "1"); chain.doFilter(request, response); } @Override public void destroy() { // TODO Auto-generated method stub } }
然后在web.xml中配置
<filter> <filter-name>cors</filter-name> <filter-class>com.hitalking.core.shiro.CorsFilter</filter-class> </filter> <filter-mapping> <filter-name>cors</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
重启应用,这样即可解决访问跨域问题。