2013-11-24|3034阅|作者：小蜜锋|举报 摘要:jstree 主页 :
http://www.jstree.com/ 其中提供了一种从后台取数据渲染成树的形式：
$("#mytree").tree({
data : {
type
jstree 主页 :
http://www.jstree.com/
其中提供了一种从后台取数据渲染成树的形式：
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$("#mytree").tree({
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data : {
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type : "json",
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url : "${ctx}/user/power!list.do"
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}
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});
对于url中返回的值必须是它定义的json数据形式:
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$("#demo2").tree({
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data : {
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type : "json",
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json : [
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{ attributes: { id : "pjson_1" }, state: "open", data: "Root node 1", children : [
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{ attributes: { id : "pjson_2" }, data: { title : "Custom icon", icon : "../media/images/ok.png" } },
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{ attributes: { id : "pjson_3" }, data: "Child node 2" },
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{ attributes: { id : "pjson_4" }, data: "Some other child node" }
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]},
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{ attributes: { id : "pjson_5" }, data: "Root node 2" }
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]
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}
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});
这里需要一个从后台实例集合转换为它规定的json数据的形式.
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/**
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* 无限递归获得jsTree的json字串
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*
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* @param parentId
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* 父权限id 6.8日修改
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* @return
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*/
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private String getJson(long parentId)
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{
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List<Authority> list = authorityManager.queryByParentId(parentId);
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for (int i = 0; i < list.size(); i++)
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{
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Authority au = list.get(i);
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if (au.getIshaschild() == 1)
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{
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str += "{attributes:{id:\"" + au.getAnid()
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+ "\"},state:\"open\",data:\"" + au.getAnname()
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+ "\" ,";
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str += "children:[";
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this.getJson(au.getAnid());
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str += "]";
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str += " }";
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}
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else
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{
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str += "{attributes:{id:\"" + au.getAnid()
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+ "\"},state:\"open\",data:\"" + au.getAnname() + "\" "
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+ " }";
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}
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if (i < list.size() - 1)
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{
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str += ",";
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}
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}
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return str;
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}
调用：
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@org.apache.struts2.convention.annotation.Action(results =
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{ @Result(name = "success", location = "/main/user/action-list.jsp") })
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public String list()
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{
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String str = "[";
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// 从根开始
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str += this.getJson(0);
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str += "]";
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this.renderJson(str);
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return null;
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}
