我最近遇到了这个问题,并找到了以下解决方案。 您可以使用过滤器添加这些标头:
import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.filter.OncePerRequestFilter;
public class CorsFilter extends OncePerRequestFilter {
@Override
protected void doFilterInternal(HttpServletRequest request,
HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
response.addHeader("Access-Control-Allow-Origin", "*");
if (request.getHeader("Access-Control-Request-Method") != null
&& "OPTIONS".equals(request.getMethod())) {
response.addHeader("Access-Control-Allow-Methods",
"GET, POST, PUT, DELETE");
response.addHeader("Access-Control-Allow-Headers",
"X-Requested-With,Origin,Content-Type, Accept");
}
filterChain.doFilter(request, response);
}
}
别忘了在你的Spring上下文中添加过滤器:
<bean id="corsFilter" class="my.package.CorsFilter" />
以及在web.xml中的映射:
<filter>
<filter-name>corsFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>corsFilter</filter-name>
<url-pattern>
如果想进一步控制,可以通过指定Spring配置文件来启用或禁用该过滤器,如下:
<beans profile="!cors">
<bean id="corsFilter" class="my.package.FilterChainDoFilter" />
</beans>
<beans profile="cors">
<bean id="corsFilter" class="my.package.CorsFilter" />
</beans>
提供类似于CorsFilter的FilterChainDoFilter,但它只在doFilterInternal(..)中执行filterChain.doFilter(request, response);