原帖地址：http://pingguohe.net/2016/03/21/ajax-solution-spring.html

又學到了一招小技巧：關於解決跨域問題的後臺解決方式，記錄一下

原貼的後續講述沒有仔細研究，只是看了帖子後初步的自己定義了一個攔截器，並配置好xml的配置，很簡單的操作就實現了功能。

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.HttpServletResponse;


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 {
		HttpServletResponse httpResponse = (HttpServletResponse) response;
		httpResponse.setHeader("Access-Control-Allow-Origin","*");
		httpResponse.setHeader("Access-Control-Allow-Methods","POST,GET,OPTIONS,DELETE");
		httpResponse.setHeader("Access-Control-Max-Age","3600");
		httpResponse.setHeader("Access-Control-Allow-Headers","Origin, X-Requested-With, Content-Type, Accept");
		httpResponse.setHeader("","");
		httpResponse.setHeader("","");
        chain.doFilter(request, httpResponse);
	}

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}
	
}