递归树，异步加载树
Jsp：
$("#maintree").ligerTree( {
url : 'busiticket!getTree.action?' + $.param( {
filter_EQL_parentid : '0',
id : '0',
root : '票务信息',[d1]
rooticon : '',
iconroot : '../'
}),
checkbox : false,
slide : false,
isleaf : false,
nodeWidth : 120,
onBeforeExpand : onBeforeExpand,
onExpand : onExpand,
attribute : [ 'nodename', 'url' ],[d2]
onClick : function(node) {
//$('#status').val(-1);
// $('#company').val(-1);
nodeID = node.data.classid;
if (nodeID != 0) {
gridManager.setOptions( {
parms : [{
name : 'filter_EQL_classid',
value : node.data.classid
} ]
});
} else {
gridManager.setOptions( {
parms : [ {
} ]
});
}
gridManager.loadData(true);
}
});
function onBeforeExpand(node) {
if (node.data.children && node.data.children.length == 0) {
manager.loadData(node.target,
'busiticket!getTree.action?' + $.param( {
filter_EQL_parentid : node.data.classid
[d3] }));
}
}
function onExpand(note) {
}
Action：
public String getTree() {
try {
List<PropertyFilter> filters = PropertyFilter
.buildFromHttpRequest(Struts2Utils.getRequest());
HttpServletRequest request = Struts2Utils.getRequest();
String root = request.getParameter("root");
if (root != null)
root = new String(root.getBytes("iso8859-1"), "UTF-8");
String rootIcon = request.getParameter("rooticon");
List<BusiGoodsClassify> list = busiGoodsClassifyManager
.getTicketTree(filters);
JSONObject jo = new JSONObject();
String treeJSON = "";
for (BusiGoodsClassify entity : list) {
jo.put("text", entity.getName());
jo.put("classid", entity.getClassid());
jo.put("pid", entity.getParentid());
jo.put("isexpand", "false");
if (entity.getChildcnt() > 0) {
jo.put("isleaf", false);
} else {
jo.put("isleaf", true);
}
jo.put("children", "[]");
treeJSON += jo.toString() + ",";
}
if (!treeJSON.equals(""))
treeJSON = treeJSON.substring(0, treeJSON.lastIndexOf(","));
if (root != null && !root.equals("")) {
treeJSON = "[{"text":"" + root
+ "","classid":"0","pid":"-1","children":["
+ treeJSON + "]";
if (rootIcon != null && !rootIcon.equals(""))
treeJSON += ""icon":"" + rootIcon + """;
treeJSON += "}]";
} else {
treeJSON = "[" + treeJSON + "]";
}
// 解决叶子节点问题，临时办法。API中有isleaf函数，没查到用法！！！
if (treeJSON.equals("[{}]"))
treeJSON = "[]";
// System.out.println("treeJSON=" + treeJSON);
// Struts2Utils.getResponse().setContentType("text/plain");
Struts2Utils.renderText(treeJSON);
return NONE;
} catch (Exception ex) {
logger.error(ex.getMessage());
}
return NONE;
}
Service：
-- 商品分类表
树的表结构如下：
private static final String hql1 = "select r.name,r.classid,r.parentid , (select count(bc.classid) from BusiGoodsClassify bc where bc.parentid = r.classid ) childcnt from BusiGoodsClassify r where r.classid = (:parentid) order by r.orders";
private static final String hql2 = "select r.name,r.classid,r.parentid , (select count(bc.classid) from BusiGoodsClassify bc where bc.parentid = r.classid ) childcnt from BusiGoodsClassify r where r.parentid = (:classid) order by r.orders";
public List<BusiGoodsClassify> getTicketTree(final List<PropertyFilter> filters)
{
Query query[d4] = null;
for(PropertyFilter filter : filters){
String fieldname = filter.getPropertyName();
String filedValue = filter.getMatchValue().toString();[d5] [d6]
String firstValue = "1000000019[d7] [d8] ";
if (filedValue.equals("0")){
query = busiGoodDao.getSession().createSQLQuery(hql1);[d9]
query.setParameter("parentid", Long.parseLong(firstValue[d10] [d11] ));
}else{
query = busiGoodDao.getSession().createSQLQuery(hql2);[d12]
query.setParameter("classid", Long.parseLong(filedValue[d13] [d14] ));
}
}
List<BusiGoodsClassify> result = new ArrayList<BusiGoodsClassify>();
List tmpList = query.list();[d15]
for (Object tmp : tmpList) {
Object[] obj = (Object[]) tmp;
BusiGoodsClassify classify = new BusiGoodsClassify();
classify.setName(obj[0].toString());
classify.setClassid(StringValueUtils.getLong(obj[1].toString()));
classify.setParentid(StringValueUtils.getLong(obj[2].toString()));
classify.setChildcnt(StringValueUtils.getInt(obj[3].toString[d16] ()));
result.add(classify);
}
return result;
}
Dao：