Jquery EasyUI Tree樹形結構的Java實現（實體轉換VO）
阿新 • • 發佈：2017-08-02
優勢 con control 項目 util turn ttr real org
前一陣做的OA項目，有一個是組織架構的樹，因為是分開做的，我做的是Controller和頁面，其他組做的Service和Dao，因為之前一直沒有商量頁面用什麽框架做比較好，導致，Dao層取出來的數據都不是Easyui Tree所能識別的，其實後臺返回的也是樹形的結構，但是他們返回來的 **id,而不是Easyui Tree所能識別的id；他們返回的是name，,而不是Easyui Tree所能識別的text，他們返回的是****，,而不是Easyui Tree所能識別的children，因為別人已經做好了，所以也不方便讓別人重新去定義格式，所以我這邊只能通過轉VO，把Service返回的對象重新進行封裝，使之支持Easyui ，話不多說，直接上代碼。
這段是VO代碼；其中主要的就是ID,text,children,要轉的就是這三個
public class OrganizationVo implements Serializable{
private Integer id;
private Integer pid;
private Integer teamId;
private String text;
private String state;
private String leader;
private Integer sort;
private List<OrganizationVo> children;
public OrganizationVo(){}
public OrganizationVo(Integer id,Integer pid, Integer teamId,String leader,Integer sort,String text,String state, List<OrganizationVo> children) {
this.id = id;
this.pid = pid;
this.teamId = teamId;
this.text = text;
this.sort = sort;
this.leader = leader;
this.state = state;
this.children = children;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getTeamId() {
return teamId;
}
public void setTeamId(Integer teamId) {
this.teamId = teamId;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getLeader() {
return leader;
}
public void setLeader(String leader) {
this.leader = leader;
}
public Integer getSort() {
return sort;
}
public void setSort(Integer sort) {
this.sort = sort;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public List<OrganizationVo> getChildren() {
return children;
}
public void setChildren(List<OrganizationVo> children) {
this.children = children;
}
public Integer getPid() {
return pid;
}
public void setPid(Integer pid) {
this.pid = pid;
}
}
這個是轉換的工具類（只要組織，不帶成員）
public class TreeNoteUtil { /** * 獲取父節點菜單 * @param treesList 所有樹菜單集合 * @return */ public final static List<OrganizationVo> getFatherNode(List<TeamOrganizational> treesList){ List<OrganizationVo> newTrees = new ArrayList<OrganizationVo>();for (TeamOrganizational teamOrganizational : treesList) { if (teamOrganizational.getFatherId()==null) {//如果pId為空，則該節點為父節點 //遞歸獲取父節點下的子節點 OrganizationVo newTree = new OrganizationVo(); newTree.setId(teamOrganizational.getId()); newTree.setText(teamOrganizational.getName()); newTree.setTeamId(teamOrganizational.getTeamId()); List<TeamOrganizational> treesLists = teamOrganizational.getSonTeamOrganizationals(); newTree.setChildren(getChildrenNode(teamOrganizational.getId(), treesLists)); newTrees.add(newTree); } } return newTrees; } /** * 遞歸獲取子節點下的子節點 * @param pId 父節點的ID * @param treesLists 所有菜單樹集合 * @return */ private final static List<OrganizationVo> getChildrenNode(Integer pId, List<TeamOrganizational> treesLists){ List<OrganizationVo> newTrees = new ArrayList<OrganizationVo>(); for (TeamOrganizational mt : treesLists) { if (mt.getFatherId() != null) { if (mt.getFatherId() == pId) { OrganizationVo newTree = new OrganizationVo(); //遞歸獲取子節點下的子節點，即設置樹控件中的children newTree.setChildren(getChildrenNode(mt.getId(), treesLists)); //設置樹控件attributes屬性的數據 newTree.setId(mt.getId()); newTree.setText(mt.getName()); newTree.setPid(mt.getFatherId()); newTree.setTeamId(mt.getTeamId()); newTree.setSort(mt.getSort()); newTree.setLeader(mt.getLeader()); newTrees.add(newTree); } } } return newTrees; } }
這個是轉換的工具類（帶組織，帶成員）
public class TreeNoteUtil2 { /** * 獲取父節點菜單 * @param treesList 所有樹菜單集合 * @return */ public final static List<OrganizationVo> getFatherNode(List<TeamOrganizational> treesList){ List<OrganizationVo> newTrees = new ArrayList<OrganizationVo>(); for (TeamOrganizational teamOrganizational : treesList) { if (teamOrganizational.getFatherId()==null) {//如果pId為空，則該節點為父節點 //遞歸獲取父節點下的子節點 OrganizationVo newTree = new OrganizationVo(); newTree.setId(teamOrganizational.getId()); newTree.setText(teamOrganizational.getName()); newTree.setTeamId(teamOrganizational.getTeamId()); List<TeamOrganizational> treesLists = teamOrganizational.getSonTeamOrganizationals(); List<OaUser> treesUserLists = teamOrganizational.getOaUsers(); newTree.setChildren(getChildrenNode(teamOrganizational.getId(), treesLists,treesUserLists)); newTrees.add(newTree); } } return newTrees; } /** * 遞歸獲取子節點下的子節點 * @param pId 父節點的ID * @param treesLists 所有菜單樹集合 * @return */ private final static List<OrganizationVo> getChildrenNode(Integer pId, List<TeamOrganizational> treesLists,List<OaUser> treesUserLists) { List<OrganizationVo> newTrees = new ArrayList<OrganizationVo>(); for (TeamOrganizational mt : treesLists) { if (mt.getFatherId() != null) { if (mt.getFatherId() == pId) { OrganizationVo newTree = new OrganizationVo(); //遞歸獲取子節點下的子節點，即設置樹控件中的children newTree.setChildren(getChildrenNode(mt.getId(), treesLists,treesUserLists)); //設置樹控件attributes屬性的數據 newTree.setId(mt.getId()); newTree.setText(mt.getName()); newTree.setPid(mt.getFatherId()); newTree.setTeamId(mt.getTeamId()); newTree.setSort(mt.getSort()); newTree.setLeader(mt.getLeader()); if(mt.getOaUsers().size()>0){ newTree.setChildren(getOaUsers(mt.getOaUsers())); } newTrees.add(newTree); } } } if(treesUserLists.size()>0){ for (OaUser oaUser:treesUserLists){ OrganizationVo newTree = new OrganizationVo(); newTree.setId(oaUser.getId()); newTree.setText(oaUser.getRealname()); newTrees.add(newTree); } } return newTrees; } public static List<OrganizationVo> getOaUsers(List<OaUser> oaUsers){ List<OrganizationVo> newTrees = new ArrayList<OrganizationVo>(); if (oaUsers.size()>0){ for (OaUser oaUser:oaUsers){ OrganizationVo newTree = new OrganizationVo(); newTree.setId(oaUser.getId()); newTree.setText(oaUser.getRealname()); newTrees.add(newTree); } }else{ } return newTrees; } }
代碼就這麽多，主要是運用了遞歸的思想，因為在你不知道有多少層級的情況下，還是用遞歸比較方便，雖然循環比遞歸的速度快，占用內存小，但遞歸還是有其優勢的；
同時，仔細看那兩個工具類，第二個工具類比第一個工具類多了添加員工的操作，但是這裏就不會使用遞歸了，因為員工下面不會再有員工了，為什麽我會強調這個，因為我先寫的是第一個工具類，總想著如何遞歸，寫第二個的時候，人員總是重復添加，好久都找不到原因，後來才忽然想到，員工下面是沒有員工的，於是恍然大悟。。。。
Jquery EasyUI Tree樹形結構的Java實現（實體轉換VO）