jquery下拉列表四级快速反显

前台：

$('#source').combotree({

url:'${ctx}/dict/pub/dict-tree-box!closedTree2.action?cateEname=source&abc=${carTask.assetsSrcEn}',

onBeforeLoad:function(node){

if(node){

var tree = $('#source').combotree('tree');

$(tree).tree('options').url='${ctx}/dict/pub/dict-tree-box!closedTree.action?cateEname=source&id='+node.id;

}

},

onBeforeSelect:function(node){

//此处用于模拟单选时文件夹不能选择，主要通过后台数据attributes属性来标识

var t = $('#source').combotree('tree');

if(t.tree('isLeaf',node.target)){

return true ;

}else {

window.setTimeout('source()',0);

return false ;

}

},

onChange:function(newValue, oldValue){

},

onSelect:function(node){

},

value:"${carTask.assetsSrcEn}",

panelHeight:400

});

<select id="source" name="source" style="width:295px;" class="easyui-validatebox" validType="selectValid['--请选择--']">

</select>

后台：@Namespace("/dict/pub")

@Results({})

public class DictTreeBoxAction extends ActionSupport {

private static final long serialVersionUID = 7945924152310819279L;

@Autowired

private DataItemManager dataItemManager;

private String cateEname;

private String fatherValue;

private Boolean isShowPrefix;

private String abc;

public Boolean getIsShowPrefix() {

return isShowPrefix;

}

public void setIsShowPrefix(Boolean isShowPrefix) {

this.isShowPrefix = isShowPrefix;

}

public String getCateEname() {

return cateEname;

}

public void setCateEname(String cateEname) {

this.cateEname = cateEname;

}

public String getFatherValue() {

return fatherValue;

}

public void setFatherValue(String fatherValue) {

this.fatherValue = fatherValue;

}

public String getAbc() {

return abc;

}

public void setAbc(String abc) {

this.abc = abc;

}

public String createIds(String[] strs ,int i){

String str = "";

for(int j=0;j<i;j++){

if(j!=i-1){

str += strs[j]+"-";

}else{

str += strs[j];

}

}

return str ;

}

public String closedTree2() throws Exception {

String[] strs = abc.split("-");

int length = strs.length-1;

List<DataItem> rootList = createItem(cateEname,"0");

List<TreeNode> rootTreeNodes = createTreeNodeList(rootList,null);

List<TreeNode> treeNodes = new ArrayList<TreeNode>();

for(int i= length ; i>0;i-- ){

if(i==length){

List<DataItem> list = createItem(cateEname,strs[i-1]);

String ids = createIds(strs,i);

treeNodes = createTreeNodeList(list,ids);

}else{

List<DataItem> list = createItem(cateEname,strs[i-1]);

String ids = createIds(strs,i);

String ids1 = createIds(strs,i+1);

List<TreeNode> newtreeNodes =createTreeNodeList(list,ids);

for(TreeNode treeNode: newtreeNodes){

if(treeNode.getId().equals(ids1)){

treeNode.setState("closed");

treeNode.setChildren(treeNodes);

break;

}

}

treeNodes = newtreeNodes;

}

}

for(TreeNode node : rootTreeNodes){

if(node.getId().equals(strs[0])){

System.out.println();

if(length==0){

}else{

node.setState("open");

node.setChildren(treeNodes);

}

break;

}

}

ObjectMapper mapper = new ObjectMapper();

mapper.getSerializationConfig().setSerializationInclusion(

Inclusion.NON_NULL);

// 设置输入时忽略JSON字符串中存在而Java对象实际没有的属性

mapper.getDeserializationConfig()

.set(org.codehaus.jackson.map.DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES,

false);

String jsonData = mapper.writeValueAsString(rootTreeNodes);

Struts2Utils.getResponse().getWriter().write(jsonData);

return null;

}

public List<DataItem> createItem(String cateEname,String id){

return dataItemManager.getDataItemSubList(cateEname,id) ;

}

public List<TreeNode> createTreeNodeList(List<DataItem> itemList,String ids){

List<TreeNode> treeNodes = new ArrayList<TreeNode>();

for (DataItem dataItem : itemList) {

TreeNode treeNode = new TreeNode();

if(ids == null){

treeNode.setId(dataItem.getItemValue());

}else{

treeNode.setId(ids+"-"+dataItem.getItemValue());

}

treeNode.setText(dataItem.getItemText());

String subFatherValue = dataItem.getItemValue();

List<DataItem> subList = createItem(cateEname,

subFatherValue);

if(subList!=null&&subList.size()>0){

treeNode.setState("closed");

}

treeNodes.add(treeNode);

}

return treeNodes;

}

public String closedTree() throws Exception {

String ids = Struts2Utils.getRequest().getParameter("id");

String id;

if(ids == null){

id = "0";

}else{

id = ids.substring(ids.lastIndexOf("-")+1);

}

List<TreeNode> treeNodes = new ArrayList<TreeNode>();

List<DataItem> list = dataItemManager.getDataItemSubList(cateEname,id);

for (DataItem dataItem : list) {

TreeNode treeNode = new TreeNode();

if(ids == null){

treeNode.setId(dataItem.getItemValue());

}else{

treeNode.setId(ids+"-"+dataItem.getItemValue());

}

treeNode.setText(dataItem.getItemText());

String subFatherValue = dataItem.getItemValue();

List<DataItem> subList = dataItemManager.getDataItemSubList(cateEname,

subFatherValue);

if(subList!=null&&subList.size()>0){

treeNode.setState("closed");

}

treeNodes.add(treeNode);

}

ObjectMapper mapper = new ObjectMapper();

mapper.getSerializationConfig().setSerializationInclusion(

Inclusion.NON_NULL);

// 设置输入时忽略JSON字符串中存在而Java对象实际没有的属性

mapper.getDeserializationConfig()

.set(org.codehaus.jackson.map.DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES,

false);

String jsonData = mapper.writeValueAsString(treeNodes);

Struts2Utils.getResponse().getWriter().write(jsonData);

return null;

}

public String execute() {

try {

List<TreeNode> treeNodes = new ArrayList<TreeNode>();

List<DataItem> list = dataItemManager.getDataItemSubList(cateEname,

fatherValue);

for (DataItem dataItem : list) {

TreeNode treeNode = new TreeNode();

treeNode.setId(dataItem.getItemValue());

treeNode.setText(dataItem.getItemText());

// treeNode.setIconCls();

// treeNode.setChecked();

String subFatherValue = dataItem.getItemValue();

// List<TreeNode> children = new ArrayList<TreeNode>();

// List<DataItem> subList = dataItemManager.getDataItemSubList(

// cateEname, subFatherValue);

// for (DataItem subDataItem : subList) {

// TreeNode subTreeNode = new TreeNode();

// subTreeNode.setId(subDataItem.getItemValue());

// subTreeNode.setText(subDataItem.getItemValue() + " "

// + subDataItem.getItemText());

// children.add(subTreeNode);

// }

// treeNode.setChildren(children);

if (isShowPrefix == null) {

isShowPrefix = false;

}

this.recursiveCall(treeNode, cateEname, subFatherValue,

isShowPrefix);

treeNodes.add(treeNode);

}

ObjectMapper mapper = new ObjectMapper();

mapper.getSerializationConfig().setSerializationInclusion(

Inclusion.NON_NULL);

// 设置输入时忽略JSON字符串中存在而Java对象实际没有的属性

mapper.getDeserializationConfig()

.set(org.codehaus.jackson.map.DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES,

false);

String jsonData = mapper.writeValueAsString(treeNodes);

Struts2Utils.getResponse().getWriter().write(jsonData);

} catch (IOException e) {

e.printStackTrace();

}

return null;

}

public void recursiveCall(TreeNode treeNode, String cateEname,

String fatherValue, Boolean isShowPrefix) {

List<TreeNode> children = new ArrayList<TreeNode>();

List<DataItem> subList = dataItemManager.getDataItemSubList(cateEname,

fatherValue);

for (DataItem subDataItem : subList) {

TreeNode subTreeNode = new TreeNode();

subTreeNode.setId(subDataItem.getItemValue());

if (isShowPrefix) {

subTreeNode.setText(subDataItem.getItemValue() + " "

+ subDataItem.getItemText());

} else {

subTreeNode.setText(subDataItem.getItemText());

}

children.add(subTreeNode);

recursiveCall(subTreeNode, cateEname, subDataItem.getItemValue(),

isShowPrefix);

}

treeNode.setChildren(children);

}

}