</script>
<%
int i = 0, j = 0;
List lTStation = (List) request.getAttribute("lTStation");
List lWStation = (List) request.getAttribute("lWStation");
List lRStation = (List) request.getAttribute("lRStation");
List lSpline = (List) request.getAttribute("lSpline");
String[] splineListNo = (String[]) request.getAttribute("splineListNo");
String[] splineListName = (String[]) request.getAttribute("splineListName");
String[] stationspline = (String[]) request.getAttribute("stationspline");
String[] TstationListNo = (String[]) request.getAttribute("TstationListNo");
String[] TstationListName = (String[]) request.getAttribute("TstationListName");
String[] WstationListNo = (String[]) request.getAttribute("WstationListNo");
String[] WstationListName = (String[]) request.getAttribute("WstationListName");
String[] RstationListNo = (String[]) request.getAttribute("RstationListNo");
String[] RstationListName = (String[]) request.getAttribute("RstationListName");
%>
<script type="text/javascript">
var varNo = new Array();
var varName = new Array();
var varslineNo = new Array();
var varslineName = new Array();
var varslinestationNoid = new Array();
for(var j=0; j<3; j++)
{
varNo[j] = new Array();
varName[j] = new Array();
}
</script>
<%
if (lTStation != null) {
for (int i0 = 0; i0 < lTStation.size(); i0++) {
%>
<script language="javascript">
varNo[0][<%=i0%>] = "<%=TstationListNo[i0]%>";
varName[0][<%=i0%>] = "<%=TstationListName[i0]%>";
</script>
<%
}
}
%>
<%
if (lWStation != null) {
for (int i1 = 0; i1 < lWStation.size(); i1++) {
%>
<script language="javascript">
varNo[1][<%=i1%>] = "<%=WstationListNo[i1]%>";
varName[1][<%=i1%>] = "<%=WstationListName[i1]%>";
</script>
<%
}
}
%>
<%
if (lRStation != null) {
for (int i2 = 0; i2 < lRStation.size(); i2++) {
%>
<script language="javascript">
varNo[2][<%=i2%>] = "<%=RstationListNo[i2]%>";
varName[2][<%=i2%>] = "<%=RstationListName[i2]%>";
</script>
<%
}
}
%>
<%
for (i = 0; i < lTStation.size(); ++i) {
%>
<script type="javascript">
varslineNo[<%=i%>] = new Array();
varslineName[<%=i%>] = new Array();
varslinestationNoid[<%=i%>] = new Array();
</script>
<%
for (j = 0; j < lSpline.size(); ++j) {
%>
<script type="javascript">
varslineNo[<%=i%>].push('<%=splineListNo[j]%>');
varslineName[<%=i%>].push('<%=splineListName[j].trim()%>');
varslinestationNoid[<%=i%>].push('<%=stationspline[j]%>');
</script>
<%
}
}
%>
<script language="javascript">
function getgkName()
{
var stationname = document.getElementById("stationId");
alert(stationname.value);
stationname.length=1;
for(var k=0; k<varNo[0].length; k++)
{
stationname.options[k+1] = new Option(varName[0][k], varNo[0][k]);
}
}
function getmtName()
{
var stationname = document.getElementById("stationId");
stationname.length=1;
for(var k=0; k<varNo[1].length; k++)
{
stationname.options[k+1] = new Option(varName[1][k], varNo[1][k]);
}
}
function getckName()
{
var stationname = document.getElementById("stationId");
stationname.length=1;
for(var k=0; k<varNo[2].length; k++)
{
stationname.options[k+1] = new Option(varName[2][k], varNo[2][k]);
}
}
function getSpline(){
var staionname = document.getElementById("stationId");
alert(staionname.value);
//得到对应站点类型下的专用线类型数组
var stationIdVarNo = varslineNo[sltstationId.selectedIndex - 1];
var stationIdVarName = varslineName[sltstationId.selectedIndex - 1]; //清空专用线类型下拉框,仅留提示选项
sltsplineid.length=1; //将专用线类型数组中的值填充到站点类型下拉框中
for(var m=0;m<splineListNo.length;m++){
if(varslinestationNoid[m] == staionname.value){
sltsplineid.options[splineListNo.length]=new Option(varslineName[m],varslineNo[m]);
}
}
}
</script>这段代码主要是做三级级联,报空指针错误~请大侠帮忙解决下啊~
<%
int i = 0, j = 0;
List lTStation = (List) request.getAttribute("lTStation");
List lWStation = (List) request.getAttribute("lWStation");
List lRStation = (List) request.getAttribute("lRStation");
List lSpline = (List) request.getAttribute("lSpline");
String[] splineListNo = (String[]) request.getAttribute("splineListNo");
String[] splineListName = (String[]) request.getAttribute("splineListName");
String[] stationspline = (String[]) request.getAttribute("stationspline");
String[] TstationListNo = (String[]) request.getAttribute("TstationListNo");
String[] TstationListName = (String[]) request.getAttribute("TstationListName");
String[] WstationListNo = (String[]) request.getAttribute("WstationListNo");
String[] WstationListName = (String[]) request.getAttribute("WstationListName");
String[] RstationListNo = (String[]) request.getAttribute("RstationListNo");
String[] RstationListName = (String[]) request.getAttribute("RstationListName");
%>
<script type="text/javascript">
var varNo = new Array();
var varName = new Array();
var varslineNo = new Array();
var varslineName = new Array();
var varslinestationNoid = new Array();
for(var j=0; j<3; j++)
{
varNo[j] = new Array();
varName[j] = new Array();
}
</script>
<%
if (lTStation != null) {
for (int i0 = 0; i0 < lTStation.size(); i0++) {
%>
<script language="javascript">
varNo[0][<%=i0%>] = "<%=TstationListNo[i0]%>";
varName[0][<%=i0%>] = "<%=TstationListName[i0]%>";
</script>
<%
}
}
%>
<%
if (lWStation != null) {
for (int i1 = 0; i1 < lWStation.size(); i1++) {
%>
<script language="javascript">
varNo[1][<%=i1%>] = "<%=WstationListNo[i1]%>";
varName[1][<%=i1%>] = "<%=WstationListName[i1]%>";
</script>
<%
}
}
%>
<%
if (lRStation != null) {
for (int i2 = 0; i2 < lRStation.size(); i2++) {
%>
<script language="javascript">
varNo[2][<%=i2%>] = "<%=RstationListNo[i2]%>";
varName[2][<%=i2%>] = "<%=RstationListName[i2]%>";
</script>
<%
}
}
%>
<%
for (i = 0; i < lTStation.size(); ++i) {
%>
<script type="javascript">
varslineNo[<%=i%>] = new Array();
varslineName[<%=i%>] = new Array();
varslinestationNoid[<%=i%>] = new Array();
</script>
<%
for (j = 0; j < lSpline.size(); ++j) {
%>
<script type="javascript">
varslineNo[<%=i%>].push('<%=splineListNo[j]%>');
varslineName[<%=i%>].push('<%=splineListName[j].trim()%>');
varslinestationNoid[<%=i%>].push('<%=stationspline[j]%>');
</script>
<%
}
}
%>
<script language="javascript">
function getgkName()
{
var stationname = document.getElementById("stationId");
alert(stationname.value);
stationname.length=1;
for(var k=0; k<varNo[0].length; k++)
{
stationname.options[k+1] = new Option(varName[0][k], varNo[0][k]);
}
}
function getmtName()
{
var stationname = document.getElementById("stationId");
stationname.length=1;
for(var k=0; k<varNo[1].length; k++)
{
stationname.options[k+1] = new Option(varName[1][k], varNo[1][k]);
}
}
function getckName()
{
var stationname = document.getElementById("stationId");
stationname.length=1;
for(var k=0; k<varNo[2].length; k++)
{
stationname.options[k+1] = new Option(varName[2][k], varNo[2][k]);
}
}
function getSpline(){
var staionname = document.getElementById("stationId");
alert(staionname.value);
//得到对应站点类型下的专用线类型数组
var stationIdVarNo = varslineNo[sltstationId.selectedIndex - 1];
var stationIdVarName = varslineName[sltstationId.selectedIndex - 1]; //清空专用线类型下拉框,仅留提示选项
sltsplineid.length=1; //将专用线类型数组中的值填充到站点类型下拉框中
for(var m=0;m<splineListNo.length;m++){
if(varslinestationNoid[m] == staionname.value){
sltsplineid.options[splineListNo.length]=new Option(varslineName[m],varslineNo[m]);
}
}
}
</script>这段代码主要是做三级级联,报空指针错误~请大侠帮忙解决下啊~
像lSpline.size(); 这种 是不是lSpline当前是个null