[
    {
        "name": "a",
        "size": "4",
        "Rate": "4",
        "level": "3",
        "children": [
            {
                "name": "aa",
                "size": "8",
                "Rate": "8",
                "level": "4",
                "children": [
                    {
                        "name": "aaa",
                        "size": "8",
                        "Rate": "8",
                        "level": "5"
                    }
                ]
            }
        ]
    },
    {
        "name": "b",
        "size": "4",
        "Rate": "4",
        "level": "3",
        "children": [
            {
                "name": "bb",
                "size": "8",
                "Rate": "8",
                "level": "4",
                "children": [
                    {
                        "name": "bbb",
                        "size": "8",
                        "Rate": "8",
                        "level": "5"
                    }
                ]
            }
        ]
    }
 ]

類(lèi)似于這種的json數(shù)據(jù)格式，不確定具體有多少children，

我定義的bean樣式

public class bean{
    private String name;
    private String size;
    private String Rate;
    private String level;
    private List<bean> children;
    ...
    get/set方法
}

利用fastjson解析

String json="json數(shù)據(jù)";
List<Bean> list=JSON.parseArray(json, Bean.class)

這樣list.size()=0

這樣的樹(shù)形json如何解析？