Java數(shù)據(jù)封裝樹形結構代碼實例
更新時間:2020年01月15日 10:07:51 作者:炫舞風中
這篇文章主要介紹了Java數(shù)據(jù)封裝樹形結構代碼實例,文中通過示例代碼介紹的非常詳細,對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下
這篇文章主要介紹了Java數(shù)據(jù)封裝樹形結構代碼實例,文中通過示例代碼介紹的非常詳細,對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下
1、實體類
@data
public class PublishServiceType implements Comparable<PublishServiceType>{
/**
*
*/
private static final long serialVersionUID = -3572108154932898825L;
/*
* @see [code]
* @comment 類型標識
*/
private String code;
/*
* @see {createtime}
* @comment 創(chuàng)建時間
*/
private java.util.Date createtime;
/*
* @see {defaultmanual}
* @comment 服務類型默認使用手冊
*/
private String defaultmanual;
/*
* @see {description}
* @comment 服務類型描述
*/
private String description;
/*
* @see {id}
* @comment 主鍵
*/
private String id;
/*
* @see {isdelete}
* @comment 是否可以刪除
*/
private Integer isdelete;
/*
* @see {lastmodifytime}
* @comment 最近修改時間
*/
private java.util.Date lastmodifytime;
/*
* @see {name}
* @comment 服務類型名稱
*/
private String name;
/*
* @see {parentid}
* @comment 服務類型父節(jié)點
*/
private String parentid;
/**
* 排序
*/
private Integer sort;
private List<PublishServiceType>children;
}
2、數(shù)據(jù)封裝
@Override
public List<PublishServiceType> findList(String name) {
List<PublishServiceType>list = publishServiceTypeMapper.findByName(name);
if (JudgeUtil.isEmpty(list)){
return null;
}
//父子級組裝
return parentAndChildren(list);
}
private List<PublishServiceType>parentAndChildren(List<PublishServiceType> list){
//最頂層根節(jié)點
List<PublishServiceType>rootList = new ArrayList<>();
//非最頂層根節(jié)點
List<PublishServiceType>bodyList = new ArrayList<>();
for (PublishServiceType publishServiceType : list) {
if (StringUtils.isBlank(publishServiceType.getParentid())){
rootList.add(publishServiceType);
}else{
bodyList.add(publishServiceType);
}
}
return getTree(rootList,bodyList);
}
public List<PublishServiceType> getTree(List<PublishServiceType>rootList, List<PublishServiceType>bodyList){
if (!JudgeUtil.isEmpty(bodyList)){
//聲明一個map,用來過濾已操作過的數(shù)據(jù)
Map<String,String> map = new HashMap<>(bodyList.size());
rootList.forEach(parent->getChild(parent,bodyList,map));
return rootList;
}else{
return rootList;
}
}
private void getChild(PublishServiceType parent,List<PublishServiceType>bodyList, Map<String,String> map){
List<PublishServiceType>childList = new ArrayList<>();
bodyList.stream().filter(c->!map.containsKey(c.getId()))
.filter(c->c.getParentid().equals(parent.getId()))
.forEach(c->{
map.put(c.getId(),c.getParentid());
getChild(c,bodyList,map);
childList.add(c);
});
parent.setChildren(childList);
}
3、結果
{
"code": 20000,
"message": "成功",
"data": [
{
"code": null,
"createtime": null,
"defaultmanual": null,
"description": null,
"id": "dc1d70b9eb7b4df3bbe8dcc6a93cbd57",
"isdelete": -1,
"lastmodifytime": null,
"name": "基礎服務",
"parentid": "",
"sort": 1,
"children": [
{
"code": null,
"createtime": null,
"defaultmanual": null,
"description": null,
"id": "b1779671ef1b45e0a9a8a1edbff03f1e",
"isdelete": -1,
"lastmodifytime": null,
"name": "數(shù)據(jù)源服務",
"parentid": "dc1d70b9eb7b4df3bbe8dcc6a93cbd57",
"sort": 2,
"children": [
{
"code": null,
"createtime": null,
"defaultmanual": null,
"description": null,
"id": "2a38a8254ec348e9b54c9bf4622f23db",
"isdelete": 1,
"lastmodifytime": null,
"name": "測試添加數(shù)據(jù)庫服務2",
"parentid": "b1779671ef1b45e0a9a8a1edbff03f1e",
"sort": null,
"children": []
}
]
},
{
"code": null,
"createtime": null,
"defaultmanual": null,
"description": null,
"id": "d4f3b047dc2d467a9b404ded8acf4673",
"isdelete": 1,
"lastmodifytime": null,
"name": "text_lsa",
"parentid": "dc1d70b9eb7b4df3bbe8dcc6a93cbd57",
"sort": null,
"children": []
}
]
},
{
"code": null,
"createtime": null,
"defaultmanual": null,
"description": null,
"id": "af1b4a4d2f074fa19e1dae0a5540a5bf",
"isdelete": 1,
"lastmodifytime": null,
"name": "測試添加1",
"parentid": "",
"sort": null,
"children": []
},
{
"code": null,
"createtime": null,
"defaultmanual": null,
"description": null,
"id": "62e15d859a224126884888a55df355a7",
"isdelete": 1,
"lastmodifytime": null,
"name": "測試添加2",
"parentid": "",
"sort": null,
"children": []
}
]
}
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持腳本之家。
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