将同级别的数据转化为不同树级别的easyUI数据 1. serviceimp层业务的实现 2.controller控制转换 3.jsp通过json接收

1 serviceimp层业务的实现

@Override

public List<TreeNode> getTreeNodesFromMenuList (List<TPermission> menus) {

List<TPermission> menuOne = new ArrayList<TPermission>();

//处理一级菜单

for (TPermission tp : menus) {

if (tp.getPid() == 0) {

menuOne.add(tp);

}

}

//处理二级菜单

for (TPermission tp : menus) {

int pid = tp.getPid();

TPermission tpp = null;

if (pid != 0) {

for (TPermission tp1 : menuOne) {

if (tp1.getId() == pid) {

tpp = tp1;

break;

}

}

tpp.getChildren().add(tp);

}

}

Collections.sort(menuOne);

for (TPermission tp : menuOne) {

Collections.sort(tp.getChildren());

}

List<TreeNode> treeNodes = transfer(menuOne);

return treeNodes;

}

private List<TreeNode> transfer(List<TPermission> tp) {

List<TreeNode> treeNodes = new ArrayList<TreeNode>();

TreeNode tn = null;

for (TPermission tp1 : tp) {

tn = new TreeNode();

tn.setId(tp1.getId());

tn.setText(tp1.getName());

tn.getAttributes().put("url", tp1.getUrl());

if (tp1.getChildren().size() != 0) {

tn.setState("closed");

tn.setChildren(transfer(tp1.getChildren()));

} else {

tn.setState("open");

}

treeNodes.add(tn);

}

return treeNodes;

}

}

2 controller层控制转换和与jsp交互

@RequestMapping(value = "getMenu", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)

@ResponseBody

public List<TreeNode> getUserMenu() {

List<TreeNode> treeNodes = null;

// 获取到当前主体

Subject subject = SecurityUtils.getSubject();

// 由当前主体获取到其首要身份信息

SysUser user = (SysUser) subject.getPrincipals().getPrimaryPrincipal();

// 获取该用户的菜单

List<TPermission> menuList = user.getMenus();

// 将Tpermission的集合转换为TreeNode的集合，返回

treeNodes = menuService.getTreeNodesFromMenuList(menuList);

return treeNodes;

}

 

3 .前段接收时json

<script>

$(function(){

//当页面加载完毕之后，初始化树

$('#myTree').tree({

url:'<%=basePath%>getMenu.do',

onClick:function(node){

alert(node.attributes.url);

if ($('#myTree').tree('isLeaf',node.target)) {

$("#myTabs").tabs('add',{

title:node.text,

href:"<%=basePath%>" + node.attributes.url,

closable:true,

iconCls:'icon-ok'

});

}/* else {

alert("父节点：" + node.text);

} */

}

});

});

</script>