struts2的s:doubleselect 二级菜单没有值

二级菜单总是取不到值

public String addNewsPre() throws Exception {

Map<String, List<SmallClass>> map = new LinkedMap();

bigClassList = (ArrayList) ngr.findAllBigClass();

for (int i = 0; i < bigClassList.size(); i++) {

BigClass b = (BigClass) bigClassList.get(i);

smallClassList = ngr.findAllSmallClass(b.getBigClassID());

map.put(b.getBigClassName(),smallClassList);

}

this.setBigClassMap(map);

return SUCCESS;//跳转到下面这个页面

}

<s:form action="addNews.action" name="sdf">

<TABLE width="780" align="center" CELLSPACING=0

background="images/bodybg.jpg">

<s:actionerror />

<s:textfield name="newsTitle" label="标题" />

<s:textarea name="newsContent" label="内容" /> <s:doubleselect list="bigClassList" name="bigClass"

listKey="bigClassName" listValue="bigClassName" label="请选择大类"

doubleList="bigClassMap[top]" doubleListKey="smallClassName"

doubleName="smallClass" doubleListValue="smallClassName" />

</s:form>

总结一下，结帖



Map<String, List<SmallClass>> map = new LinkedMap();

要改成

Map<Integer, List<SmallClass>> map=new LinkedHashMap();

不然会报上述错误

<s:form action="addNews.action" name="sdf">

要改成

<s:form action="addNews" name="sdf">

不然，二级菜单显示为空

－－－－

public String addNewsPre() throws Exception {

Map<String, List<SmallClass>> map = new LinkedHashMap();

bigClassList = (ArrayList) ngr.findAllBigClass();

for (int i = 0; i < bigClassList.size(); i++) {

BigClass b = (BigClass) bigClassList.get(i);

smallClassList = ngr.findAllSmallClass(b.getBigClassID());

map.put(b.getBigClassID(),smallClassList);

}

this.setBigClassMap(map);

return SUCCESS;

}

<s:form action="addNews" name="sdf">

<s:doubleselect list="bigClassList" name="bigClass"

listKey="bigClassID" listValue="bigClassName" label="请选择大类"

doubleList="bigClassMap.get(top.bigClassID)" doubleListKey="smallClassName"

doubleName="smallClass" doubleListValue="smallClassName" />