package app.util;import java.util.ArrayList;
import java.util.List;import com.alibaba.fastjson.JSON;public class Menu {
private Integer pid;
private String menuName;
private Integer parentId;
private Integer position;
private List<Menu> childMenu; public Integer getPid() {
return pid;
} public void setPid(Integer pid) {
this.pid = pid;
} public String getMenuName() {
return menuName;
} public void setMenuName(String menuName) {
this.menuName = menuName;
} public Integer getParentId() {
return parentId;
} public void setParentId(Integer parentId) {
this.parentId = parentId;
} public Integer getPosition() {
return position;
} public void setPosition(Integer position) {
this.position = position;
} public List<Menu> getChildMenu() {
return childMenu;
} public void setChildMenu(List<Menu> childMenu) {
this.childMenu = childMenu;
} public Menu(Integer parentId,String menuName, Integer pid, Integer position) {
super();
this.parentId = parentId;
this.menuName = menuName;
this.pid = pid;
this.position = position;
} public Menu() {
super();
} public static void main(String[] args) { List<Menu> list=new ArrayList<Menu>();
Menu menu1=new Menu(, "父级1", , );
Menu menu2=new Menu(, "父级2", , );
Menu menu1_1=new Menu(, "子级1_1", , );
Menu menu1_2=new Menu(, "子级1_2", , );
Menu menu1_2_1=new Menu(, "子级1_2_1", , );
Menu menu1_2_2=new Menu(, "子级1_2_2", , );
list.add(menu1);
list.add(menu2);
list.add(menu1_1);
list.add(menu1_2);
list.add(menu1_2_1);
list.add(menu1_2_2); List<Menu> listTree=buildTree(list,); String trssJson=JSON.toJSONString(listTree);
System.out.println(trssJson); } public static List<Menu> buildTree(List<Menu> list,int pid){
List<Menu> menus=new ArrayList<Menu>();
for (Menu menu : list) { int parentId = menu.getPid();
int menuId= menu.getParentId();
if (pid == parentId) {
List<Menu> menuLists = buildTree(list, menuId); menu.setChildMenu(menuLists);
menus.add(menu);
}
} return menus;
}
}
成型
[
{
"childMenu": [
{
"childMenu": [ ],
"menuName": "子级1_1",
"parentId": ,
"pid": ,
"position":
},
{
"childMenu": [
{
"childMenu": [ ],
"menuName": "子级1_2_1",
"parentId": ,
"pid": ,
"position":
}
],
"menuName": "子级1_2",
"parentId": ,
"pid": ,
"position":
}
],
"menuName": "父级1",
"parentId": ,
"pid": ,
"position":
},
{
"childMenu": [
{
"childMenu": [ ],
"menuName": "子级1_2_2",
"parentId": ,
"pid": ,
"position":
}
],
"menuName": "父级2",
"parentId": ,
"pid": ,
"position":
}
]
