修改文件目录权限 chmod

<ec:table
title="操作查询"
items="testVOList"
var="testVO"
action="${ctx}/ghl/test.do?method=test"
imagePath="${ctx}/ghl/common/components/extremetable/images/*.gif"
width="100%"
locale="zh_CN"
retrieveRowsCallback="limit"
filterRowsCallback="limit"
sortRowsCallback="limit"
view="com.ghl.core.web.xtable.CustomToolbarPageFooterView"
filterable="false"
autoIncludeParameters="false"
state="persist"
form="viewForm">
<ec:row>
[color=red]<!--此处以下为复选框代码-->[/color] 	 	 <ec:column
alias="checkbox"
title=" "
filterable="false"
sortable="false"
cell="com.ghl.core.web.xtable.cell.SelectedCheckPresidentCell"
headerCell="com.ghl.core.web.xtable.cell.CheckBoxHeaderCell"
style="width:5px"
property="typeCode" />
[color=red]<!--此处以下为复选框代码-->[/color][color=brown][/color]	    <ec:column sortable="false"  title="title" property="property" >
</ec:column>
<ec:column sortable="true"  title="title" property="property">
</ec:column>
<ec:column sortable="true"  title="title" property="property">
</ec:column>
<ec:column sortable="false"  title="title" property="property">
</ec:column>
<ec:column sortable="false"  title="title" property="property">
</ec:column>
<ec:column sortable="false"  title="title" property="property">
</ec:column>
<ec:column sortable="false"  title="title" property="property">
</ec:column>
<ec:column sortable="false"  title="title" property="property">
</ec:column>
</ec:row>
</ec:table>

public String getHtmlDisplay(TableModel model, Column column) {
ColumnBuilder columnBuilder = new ColumnBuilder(column);
columnBuilder.tdStart();
String id = column.getValueAsString();
try {
Collection selectedPresidentsIds = (Collection) model.getContext().getSessionAttribute(
SelectedPresidentsConstants.SELECTED_PRESIDENTS);
if (selectedPresidentsIds != null && selectedPresidentsIds.contains(id)) {
columnBuilder.getHtmlBuilder().input("hidden").name("chkbx_" + id).value(
SelectedPresidentsConstants.SELECTED).xclose();
columnBuilder.getHtmlBuilder().input("checkbox").name("primaryID").value(id);
columnBuilder.getHtmlBuilder().onclick("setPresidentState(this)");
columnBuilder.getHtmlBuilder().checked();
columnBuilder.getHtmlBuilder().xclose();
} else {
columnBuilder.getHtmlBuilder().input("hidden").name("chkbx_" + id).value(
SelectedPresidentsConstants.UNSELECTED).xclose();
columnBuilder.getHtmlBuilder().input("checkbox").name("primaryID").value(id).id(id);
columnBuilder.getHtmlBuilder().onclick("setPresidentState(this)");
columnBuilder.getHtmlBuilder().xclose();
}
} catch (Exception e) {
}
columnBuilder.tdEnd();
return columnBuilder.toString();
}

if (!hasModChecked(document.forms[1].primaryID)) {
alert('请选择一个类别进行修改！');
return false;
}
这个是判断选中没有