我想从 java 类创建以下 json 有效负载。只有一个条件,Subgroup1 可以为空,这意味着组可能/可能没有 subgroup1。不知道怎么做。任何帮助将不胜感激。提前致谢!如果需要,我可以更改课程。
{
"data" : [
{
"id": "1",
"name": "ab",
"children": [
{
"id": "1",
"name": "xyz",
"children": [
{ "id": "1",
"name": "opl"
} ]
}
]
},
{
"id":" 2",
"name": "cd",
"children": [
{
"id": "1",
"name": "ijk",
"children": [
{ "id": "1",
"name": "rty"},
{ "id": "2",
"name": "wsc"
} ]
},
{
"id": "2",
"name": "lmn",
"children": [
{ "id": "1",
"name": "qaz"},
{ "id": "2",
"name": "poi"
} ]
},
{
"id": "3",
"name": "opq",
"children": [
{ "id": "1",
"name": "edf"},
{ "id": "2",
"name": "bhgga"
} ]
}
]
},
{
"id": "3",
"name": "ef",
"children": [
{
"id": null,
"name": null,
"children": [
{ "id": "2",
"name": "ijyuht"
} ]
}
]
}
]
}
我有 3 个不同的 java 类来映射对象。
数据类
public class Data {
private Long id;
private String name;
private List<Subgroup1> children;
}
子组1.class
public class Subgroup1 {
private Long id;
private String name;
private List<Subgroup2> children;
}
子组2.class
public class Subgroup2 {
private Long id;
private String name;
}