jsp设置web路径示例

<%

String url = request.getRequestURL().toString();//获取当前地址

String root = url.substring(0, url.indexOf("/my/account/invitation.jsp"));//剥离当前业务地址，取出根路径

String invitUrl = root + "/service/user/inviteRegister?invitedCode=" + customer.getInvitedCode();//设置目的地址

%>