请帮我看看这个function中的url为何指向不存在的页面呢?

zwbwork2 2019-05-30 04:40:13

我初学JAVA，从网上下载了一套程序，是easyUI+ssm，用来学习。其中有个功能，点击按钮，弹出修改对话框，
function openTeacherModifyDialog() {
var selectedRows = $("#dg").datagrid('getSelections');
if (selectedRows.length != 1) {
$.messager.alert('系统提示', '请选择一条数据进行操作?');
return;
}
var row = selectedRows[0];
$("#dlg").dialog("open").dialog("setTitle", "修改教师信息");
$("#fm").form("load", row);
url = "reserveTeacher.htm?id=" + row.id;
}
它明明是出现一个对话框，为何要写url ="reserveTeacher.htm... ? 并且这个"reserveTeacher.htm在项目文件中并不存在啊. 可是程序还能正常运行,这是为什么呢?

整个页面的代码如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@ include file="/WEB-INF/common.jsp"%>
<!DOCTYPE html>
<html>
<head>
<title>教师管理</title>
<script type="text/javascript">
var url;

function searchTeacher() {
$('#dg').datagrid('load', {
no : $("#s_no").val(),
name : $('#s_name').val()
});
}

function openTeacherAddDialog() {
$("#dlg").dialog("open").dialog("setTitle", "添加教师信息");
url = "reserveTeacher.htm";
}

function openTeacherModifyDialog() {
var selectedRows = $("#dg").datagrid('getSelections');
if (selectedRows.length != 1) {
$.messager.alert('系统提示', '请选择一条数据进行操作');
return;
}
var row = selectedRows[0];
$("#dlg").dialog("open").dialog("setTitle", "修改教师信息");
$("#fm").form("load", row);
url = "reserveTeacher.htm?id=" + row.id;
}

function saveTeacher() {
$("#fm").form(
"submit",
{
url : url,
onSubmit : function() {
return $(this).form("validate");
},
success : function(result) {
var result = eval('(' + result + ')');
if (result.errorMsg) {
$.messager.alert('系统提示', "<font color=red>"
+ result.errorMsg + "</font>");
return;
} else {
$.messager.alert('系统提示', '保存成功');
closeTeacherAddDialog();
$("#dg").datagrid("reload");
}
}
});
}

function closeTeacherAddDialog() {
$("#dlg").dialog("close");
$("#fm").form('clear');
}

function deleteTeacher() {
var selectedRows = $("#dg").datagrid('getSelections');
if (selectedRows.length == 0) {
$.messager.alert('系统提示', '请至少选择一条数据操作');
return;
}
var strIds = [];
for ( var i = 0; i < selectedRows.length; i++) {
strIds.push(selectedRows[i].id);
}
var ids = strIds.join(",");
$.messager.confirm("系统提示", "确定删除<font color=red>"
+ selectedRows.length + "</font>数据吗？", function(r) {
if (r) {
$.post("deleteTeacher.htm", {
ids : ids
}, function(result) {
if (result.success) {
$.messager.alert('系统提示', "删除<font color=red>"
+ result.delNums + "</font>条数据成功");
$("#dg").datagrid("reload");
} else {
$.messager.alert('系统提示', result.errorMsg);
}
}, "json");
}
});
}
</script>
</head>
<body style="margin: 1px;">
<table id="dg" class="easyui-datagrid" fitColumns="true"
pagination="true" rownumbers="true" url="teacherList.htm" fit="true" toolbar="#tb">
<thead>
<tr>
<th field="ck" checkbox="true" align="center"></th>
<th field="id" width="50" align="center" data-options="hidden:true"></th>
<th field="no" width="60" align="center">工号</th>
<th field="name" width="60" align="center">姓名</th>
<th field="phone" width="60" align="center">电话</th>
<th field="position" width="60" align="center">职位</th>
<th field="sex" width="60" align="center">姓名</th>
<th field="mail" width="60" align="center">邮箱</th>
</tr>
</thead>
</table>

<div id="tb">
<div>
<privilege:operation operationId="100018" clazz="easyui-linkbutton" onClick="openTeacherAddDialog()" name="添加" iconCls="icon-add" ></privilege:operation>
<privilege:operation operationId="100019" clazz="easyui-linkbutton" onClick="openTeacherModifyDialog()" name="修改" iconCls="icon-edit" ></privilege:operation>
<privilege:operation operationId="100020" clazz="easyui-linkbutton" onClick="deleteTeacher()()" name="删除" iconCls="icon-remove" ></privilege:operation>
</div>
<div class="updownInterval"> </div>
<div>
姓名： <input type="text" name="s_name" id="s_name" size="20" onkeydown="if(event.keyCode==13) searchTeacher()"/>
工号： <input type="text" name="s_no" id="s_no" size="20" onkeydown="if(event.keyCode==13) searchTeacher()"/>
<a href="javascript:searchTeacher()" class="easyui-linkbutton" iconCls="icon-search" >搜索</a>
</div>
<div class="updownInterval"> </div>
</div>

<div id="dlg" class="easyui-dialog" style="width: 520px;height: 320px;padding: 10px 20px"
closed="true" buttons="#dlg-buttons">
<form id="fm" method="post">
<table cellspacing="5px;">
<tr>
<td>姓名</td>
<td><input type="text" id="name" name="name" class="easyui-validatebox" required="true"/></td>
<td> </td>
<td>工号</td>
<td><input type="text" id="no" name="no" class="easyui-validatebox" required="true"/></td>
</tr>
<tr>
<td>性别</td>
<td><input type="text" id="sex" name="sex" class="easyui-validatebox" required="true"/></td>
<td> </td>
<td>电话</td>
<td><input type="text" id="phone" name="phone" class="easyui-validatebox" required="true"/></td>
</tr>
<tr>
<td>邮箱</td>
<td><input type="email" id="mail" name="mail" class="easyui-validatebox" required="true"/></td>
<td> </td>
<td>职位</td>
<td><input type="text" id="position" name="position" class="easyui-validatebox" required="true"/></td>
</tr>
</table>
</form>
</div>

<div id="dlg-buttons">
<a href="javascript:saveTeacher()" class="easyui-linkbutton" iconCls="icon-ok" >保存 </a>
<a href="javascript:closeTeacherAddDialog()" class="easyui-linkbutton" iconCls="icon-cancel" >关闭</a>
</div>

</body>
</html>

...全文