Servlet中打开最大化窗口

业务需求 : 通过一个映射地址,传参数,进入主页面,打开最大化窗口

完成路程 : 网上收集,个人整理


代码如下:

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.apache.log4j.LogManager;

/**
 *过滤,关闭当前Servlet,打开最大化窗口,进入主页面
 * */
public class WindowOpenServlet implements Filter {

 private static final org.apache.log4j.Logger logger = LogManager
   .getLogger(WindowOpenServlet.class);

 public void destroy() {

 }

 public void doFilter(ServletRequest request, ServletResponse response,
   FilterChain filterChain) throws IOException, ServletException {
  HttpServletRequest req = (HttpServletRequest) request;
  HttpServletResponse res = (HttpServletResponse) response;

  StringBuffer sbr = new StringBuffer();
  sbr.append("");
  sbr.append("screenY = window.screen.availHeight;");
  sbr.append("screenX = window.screen.availWidth;");
  //LEFT=0,TOP=0,HEIGHT=screenY,WIDTH=screenX
  sbr.append("properties=\"menubar=no,toolbar=no,location=no,directories=no,scrollbars=no,resizable=yes,status=no\";");
  sbr.append("window.opener = null;");
  sbr.append("window.close();");
  sbr.append("var mywin = window.open(\"/main?").append(req.getQueryString())
    .append("\",\"_blank\",properties);");
  sbr.append("mywin.moveTo(0, 0);");
  sbr.append("mywin.resizeTo(screenX,screenY);");
  sbr.append("");
  String script = sbr.toString();
  logger.info("script: "+script);

  try {
   java.io.PrintWriter out = res.getWriter();
   out = res.getWriter();
   out.write(script);
   out.flush();
   out.close();  
  } catch (Exception e) {
   logger.error("打开新窗口出错..." + e.getMessage(), e);
   throw new RuntimeException("打开新窗口出错..." + e.getMessage(), e);
  }

 }

 public void init(FilterConfig arg0) throws ServletException {

 }

}