页面跳转出现空白页怎么解决


<%@page import="JavaBean.FacultiesInfoBean"%>
<%@page import="java.util.ArrayList"%>
<%@page import="dao.FacultiesDao"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
html>
<html>
<head>
<% String path =request.getContextPath();
    String basePath=request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<base href="<%=basePath%>">
<meta charset="UTF-8">
<title>Insert title heretitle>
head>
<body>

<%     
    
    ArrayList faculList=new ArrayList();
    FacultiesDao dao = new FacultiesDao();
    faculList=dao.showFaculties();
%>
<center>
<a href="addFacultiesServlet">添加a>
<form action="serachFacultiesServlet">
    <input type="text" name="facultiesId"> input>
    <input type="submit" value="搜索"> input>
form>

<%
    FacultiesInfoBean facul=(FacultiesInfoBean) request.getAttribute("facul");
    
    if(facul!=null){
        faculList.clear();
        faculList.add(facul);
        
    }
    
%>
    <table>
    <tr>
        <td>院系编号td>
        <td>院系名td>
        <td>院系主管td>
        <td>院系地址td>
        <td>院系学生数量td>
    tr>
    <%for( int i =0; i 
        <tr>
            <td><%=faculList.get(i).getFacultiesId() %>td>
            <td><%=faculList.get(i).getFacultiesName()%>td>
            <td><%=faculList.get(i).getFacultiesManage()%>td>
            <td><%=faculList.get(i).getFacultiesAddr() %>td>
            <td><%=faculList.get(i).getFacultiesCount()%>td>
            <td><a href="modFaculties?facultiesId=<%=faculList.get(i).getFacultiesId()%>">修改a>td>
            <td><a href="dropFacultiesServlet?facultiesId=<%=faculList.get(i).getFacultiesId()%>">删除a>td>
        tr>
    <%}%>
    table>
center>
body>
html>

代码在页面跳转时出现空白页如下

img

但是在页面输入跳转可以跳转如下

img

但是通过点击a标签就出现图一空白页现象

是a标签跳转的地址不一致，比较一下两个地方的跳转地址。