日期:2014-05-16  浏览次数:20461 次

Jsp获取客户端IP地址(我看不懂代码,求注释)
   <%
  String ip=request.getHeader("x-forwarded-for");
   %>
   <%
      if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
   %>
   <%
      ip = request.getHeader("Proxy-Client-IP");
   %>
   <%
      }if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
   %>
   <%
      ip = request.getHeader("WL-Proxy-Client-IP");
   %>
   <%
      }if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
   %>
   <%
      ip = request.getRemoteAddr();
   %>
 
 
    <input type = "hidden" name="ip"
    value="<%= request.getRemoteAddr()%>" id="macip"/>
   
    <br/>
   <%
      }
   %>

虽然有代码,但没有注释,我看不懂哦。
高手请指点指点。小弟先谢谢啦……