ext4js treepanel json，treepanel 导航

逃离我推掉我的手 2021-12-13 18:49 234阅读 0赞

gson版本：gson-2.2.4.jar

ext4js 部分代码：

xtype: 'treepanel',
                        region: 'west',
                        width: 240,
                        store: 'MytreeStore',
                        title: '',
                        split: true,
                        autoScroll: true, 
                        root: {
                                    expanded: true
                                },
                        rootVisible: false,
                        viewConfig: {
    
                        },
                        listeners: {
                            cellclick: {
                                fn: me.onTreepanelCellClick,
                                scope: me
                            }
                        }

封装类，字段不能改变

class MyTreeNode {
    	private String id;
    	private String text;
    	private Boolean expanded = false;
    	private Boolean leaf = true;
    	private String url;
    	private List<MyTreeNode> children;
    
    	public List<MyTreeNode> getChildren() {
    		return children;
    	}
    
    	public void setChildren(List<MyTreeNode> 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;
    	}
    
    	public Boolean getExpanded() {
    		return expanded;
    	}
    
    	public void setExpanded(Boolean expanded) {
    		this.expanded = expanded;
    	}
    
    	public Boolean getLeaf() {
    		return leaf;
    	}
    
    	public void setLeaf(Boolean leaf) {
    		this.leaf = leaf;
    	}
    
    	public String getUrl() {
    		return url;
    	}
    
    	public void setUrl(String url) {
    		this.url = url;
    	}

springMVC 调用

/**
    	 * 返回菜单JSON数据
    	 * 
    	 * @param session
    	 * @return
    	 */
    	@RequestMapping(value = "/test", produces = "text/plain;charset=UTF-8")
    	@ResponseBody
    	public Object test() {
    
    		List<KZ_GNLB> list = kz_gnlbService.selectAll();// 数据库全部节点
    
    		List<MyTreeNode> listTree = new ArrayList();// 树状节点全部数据
    
    		MyTreeNode rootNode = new MyTreeNode();// 根节点
    		rootNode.setId("0");
    		rootNode.setText("我的导航");
    		rootNode.setExpanded(true);
    		rootNode.setLeaf(false);
    		
    		InitTree(rootNode,list);
    		
    		listTree.add(rootNode);
    
    		Gson gson = new Gson();
    		String sss = gson.toJson(listTree).toString();
    		System.out.println(sss);
    		return sss;
    	}
    	
    	private void InitTree(MyTreeNode pNode,List<KZ_GNLB> list)
    	{
    		MyTreeNode childNode;
    
    		for (int i=0; i < list.size(); i++)// 功能分类
    		{
    			if (list.get(i).getPGNID().equals(pNode.getId())) {
    				childNode = new MyTreeNode();
    				childNode.setId(list.get(i).getGNID());
    				childNode.setText(list.get(i).getGNMC());
    				childNode.setUrl(list.get(i).getURL());	
    				
    				List<MyTreeNode> childList=pNode.getChildren();				
    				if(childList==null)
    				{
    					childList=new ArrayList<MyTreeNode>();	
    					pNode.setChildren(childList);
    				}
    				childList.add(childNode);
    				
    				InitTree(childNode,list);
    			}
    		}
    		List<MyTreeNode> childList=pNode.getChildren();		
    		if (childList==null) {
    			pNode.setExpanded(false);
    			pNode.setLeaf(true);		
    		} else {
    			pNode.setExpanded(true);
    			pNode.setLeaf(false);
    		}		
    	}