Tomcat 解决分布式跨域问题

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 res = (HttpServletResponse) response;
		res.setHeader("Accept","application/json");
		res.setHeader("Content-Type","application/json; 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", "3600");
		res.addHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
	    chain.doFilter(request, response);
		
	}
	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

}
web.xml
	
	    cors
	    XXX.core.CORSFilter
	
	
	    cors
	    /*
	

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