Jsp to Servlet，返回将送的所有值都传回来

Jsp:
<form method="post" name="form1" onSubmit="return checkForm();" action="/eSpinTw/eSpintTwservlet">
        <input type="hidden" name="SVR_ID" value="S_Query_CaseClaim">
        <input type="hidden" name="OUTPUTDATA_ID" value="Sample_OutPutData">
        <input type="hidden" name="REQ_OPR" value="SELECT">
        <input type="hidden" name="FROM_JSP" value="caseClaim/query.jsp" >
        <input type="hidden" name="TO_JSP" value="caseClaim/query.jsp?currentPageNo=1" >
        <input type="hidden" name="delSeqNo" value="" >
Servlet:
           RequestDispatcher rd = request.getRequestDispatcher(toJSP);
           rd.forward(request, response);
            response.flushBuffer();
原理：
        将request,response对象当作变量传。如果在中间有的JSP新增了变量，则不适用。