Applet连接SQLServer出现问题--Error establishing socket

Question

代码如下:
<APPLET  CODE = "com.event.chart.AppletAction.class" CODEBASE = "applets" ARCHIVE = "mssqlserver.jar,msutil.jar,jfreechart-1.0.3.jar,msbase.jar,jcommon-1.0.6.jar,struts.jar" WIDTH = 600 HEIGHT = 450 >
<PARAM NAME = "type" VALUE="day">
<PARAM NAME = "isSoM" VALUE="single">
<PARAM NAME = "begin_Date" VALUE="<%=begin_Date%>">
<PARAM NAME = "end_Date" VALUE="<%=end_Date%>">
<PARAM NAME = "user_id" VALUE="<%=user_id%>">
<PARAM NAME = "user_name" VALUE="<%=user_name%>">
<PARAM NAME =ARCHIVE VALUE="mssqlserver.jar,msutil.jar,jfreechart-1.0.3.jar,msbase.jar,jcommon-1.0.6.jar,struts.jar" >
</APPLET>
看了一些帖子,貌似java.policy的问题,但是解决不了.