动态json-tree

 // 动态构造tree
    public List<TreeVO> insertTree(String path) {
        LinkedList<NamedNodeMap> folderList = new LinkedList();
        LinkedList<NamedNodeMap> fileList = new LinkedList();

        folderList = getfolderlist(path);// 传个路径，查出该路径下的所有文件夹
        fileList = getfilelist(path);// 传个路径，查出该路径下的所有文件夹

        folderList.addAll(fileList);// 文件夹+文件

        List<TreeVO> lt = new ArrayList<TreeVO>();// 用来存放动态树的集合
        for (NamedNodeMap namedNodeMap : folderList) {
             String folderName = namedNodeMap.getNamedItem("label").getNodeValue();

             String fpath = namedNodeMap.getNamedItem("path").getNodeValue();
             String type = namedNodeMap.getNamedItem("type").getNodeValue();

             TreeVO tv = new TreeVO();
             tv.setId(new SimpleDateFormat("yyyyMMddhhmmss").format(new Date()));
             tv.setText(folderName);
             tv.setAttributes("{\"url\":\"/Portal/jqueryEasyUi/html/data.html\"}");
             tv.setPath(fpath);

            if ("folder".equalsIgnoreCase(type)) {
                tv.setIconCls("icon-tree-folder");
                tv.setChildren(insertTree(fpath));     // 递归  （从外往里）
            }

            lt.add(tv);
        }
        return lt;
    }
    // 写个方法，把最后的tree给转成json字符串
    public String getJsonString(String path) {
        List<TreeVO> lt = this.insertTree(path);
        JSONArray ja = JSONArray.fromCollection(lt);
        String js = ja.toString();
        return js;
    }

 

 

//TreeVO类

/**
 *
 * @author hou
 */
public class TreeVO {

    private String id;
    private String text;
    private String attributes;
    private String iconCls;
    private String path;
    private List<TreeVO> children;

    public String getPath() {
        return path;
    }

    public void setPath(String path) {
        this.path = path;
    }

    public String getIconCls() {
        return iconCls;
    }

    public void setIconCls(String iconCls) {
        this.iconCls = iconCls;
    }

    public String getAttributes() {
        return attributes;
    }

    public void setAttributes(String attributes) {
        this.attributes = attributes;
    }

    public List<TreeVO> getChildren() {
        return children;
    }

    public void setChildren(List<TreeVO> children) {
        this.children = children;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }
   
}