spring rest cors解决跨域问题

首先在web.xml中加入下面代码

 <filter>
<filter-name>cors</filter-name>
<filter-class>com.xxxxx.utils.CorsFilter</filter-class>
  </filter>
<filter-mapping>
<filter-name>cors</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

然后定义自定义的过滤器

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.springframework.stereotype.Component;


@Component
public class CorsFilter 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;
HttpServletRequest request =  (HttpServletRequest) servletRequest;
String referer=request.getHeader("Referer");


if(referer==null||"".equals(referer)){
        response.setHeader("Access-Control-Allow-Origin","默认放行domian");
}else{
   //此处可以定义一个集合存放多个放行的domain如果匹配则放行
response.setHeader("Access-Control-Allow-Origin",referer.substring(0,referer.indexOf("/",8)));
}

response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "0");
response.setHeader("Access-Control-Allow-Headers", "Accept, Origin, X-Requested-With, Content-Type, Last-Modified,X-Custom-Header");
response.setHeader("Access-Control-Allow-Credentials", "true");
filterChain.doFilter(servletRequest, servletResponse);

}

@Override
public void destroy() {

}
}