web系统兼容IE11

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 CompatibleFilter implements Filter {
	public Boolean isNeedCompliant = true;
	// 强制将浏览器文档模式转换为IE7
	public String X_UA_Compatible = "IE=EmulateIE7";

	public void init(FilterConfig filterConfig) throws ServletException {
		String compatible = filterConfig.getInitParameter("compatible");
		String needCompliant = filterConfig.getInitParameter("isNeedCompliant");
		if (compatible != null)
			X_UA_Compatible = compatible;
		if (needCompliant != null && needCompliant.equals("false"))
			isNeedCompliant = false;
	}

	public void doFilter(ServletRequest req, ServletResponse res,FilterChain chain) throws IOException, ServletException{
		if(isNeedCompliant == true){
			HttpServletResponse response = (HttpServletResponse) res;
			response.addHeader("X-UA-Compatible", X_UA_Compatible);
			chain.doFilter(req, response);
		}else{
			chain.doFilter(req,res);
		}
	}

	public void destroy() {

	}

}