Get the tree JSON string

public class TreeNode {

Private long nodeId;
Private String NodeName;
Private long Fathernodeid;

Public TreeNode () {
}
Public TreeNode (Long nodeId, String nodeName, long Fathernodeid) {
This.nodeid = nodeId;
This.nodename = NodeName;
This.fathernodeid = Fathernodeid;
}
Public long Getnodeid () {
return nodeId;
}
public void Setnodeid (long nodeId) {
This.nodeid = nodeId;
}
Public String Getnodename () {
return nodeName;
}
public void Setnodename (String nodeName) {
This.nodename = NodeName;
}
Public long Getfathernodeid () {
return Fathernodeid;
}
public void Setfathernodeid (long Fathernodeid) {
This.fathernodeid = Fathernodeid;
}

}

public class Constructortree {
StringBuffer json = new StringBuffer ();
/**
*
* @Title: Getjson
* @Description: Call interface
* @author Administrator
* @param list
* @param node
* @return
*/
Public String Getjson (list<treenode> List, TreeNode node) {
JSON = new StringBuffer ();
Constructorjson (list, node);
String jsondate = json.tostring ();
Return ("[" + Jsondate + "]"). ReplaceAll (",]", "]");


}

/**
*
* @Title: Constructorjson
* @Description: Building a JSON tree
* @author Administrator
* @param list
* @param treeNode
*/
@SuppressWarnings ("Unchecked")
public void Constructorjson (list<treenode> List, TreeNode TreeNode) {
if (Haschild (list, treeNode)) {
Json.append ("{id:");
Json.append (Treenode.getnodeid ());
Json.append (", Text:");
Json.append (Treenode.getnodename ());
Json.append (", children:[");
list<treenode> childlist = getchildlist (list, TreeNode);
Iterator Iterator = Childlist.iterator ();
while (Iterator.hasnext ()) {
TreeNode node = (TreeNode) iterator.next ();
Constructorjson (list, node);
}
Json.append ("]},");
} else {
Json.append ("{id:");
Json.append (Treenode.getnodeid ());
Json.append (", Text:");
Json.append (Treenode.getnodename ());
Json.append ("},");
}
}

/**
*
* @Title: Getchildlist
* @Description: Get child node list information
* @author Administrator
* @param list
* @param node
* @return
*/
Public list<treenode> getchildlist (list<treenode> List, TreeNode node) {
list<treenode> li = new arraylist<treenode> ();
Iterator it = List.iterator ();
while (It.hasnext ()) {
TreeNode n = (TreeNode) it.next ();
if (n.getfathernodeid () = = Node.getnodeid ()) {
Li.add (n);
}
}
return Li;
}

/**
*
* @Title: Haschild
* @Description: Determine if there are child nodes
* @author Administrator
* @param list
* @param node
* @return
*/
public boolean haschild (list<treenode> List, TreeNode node) {
return getchildlist (list, node). Size () > 0? True:false;
}
}

Get the tree JSON string