在springmvc+spring+mybatis里整合ztree实现增删改查，上一篇已经写了demo，以下就仅仅贴出各层实现功能的代码：
Jsp页面实现功能的js代码例如以下：
<script>
//用于捕获分类编辑button的 click 事件，而且依据返回值确定是否同意进入名称编辑状态
function beforeEditName(treeId, treeNode) {
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
zTree.selectNode(treeNode);
return true;
}
//移除分类前运行
function beforeRemove(treeId, treeNode) {
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
zTree.selectNode(treeNode);
var confirmFlag = confirm("确认删除分类[ " + treeNode.name + " ]吗？" )
var confirmVal = false;
if(confirmFlag){
var data = {id:treeNode.id};
$.ajax({
async: false,
type: "post",
data:data,
url: "<%=request.getContextPath() %>/library/deleteLibrary/ ",
success: function(json){
if(json == "success" ){
confirmVal = true;
} else{
alert('亲，删除失败！');
}
},
error: function(){
alert('亲，删除失败！');
}
});
}
return confirmVal;
}
//运行删除操作后提示
function onRemove(e, treeId, treeNode) {
alert('亲，删除成功！');
}
//用于捕获分类编辑名称结束（Input 失去焦点 或 按下 Enter 键）之后，更新分类名称数据之前的事件回调函数
function beforeRename(treeId, treeNode, newName) {
if (newName.length == 0 || newName.indexOf("请输入名称")>=0) {
alert('亲，请输入分类名称！');
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
setTimeout( function(){zTree.editName(treeNode)}, 10);
return false;
}
if(newName.length > 15){
alert('亲，分类名称过长！');
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
setTimeout( function(){zTree.editName(treeNode)}, 10);
return false;
}
native_name = treeNode.name;
return true;
}
//运行编辑操作
function onRename(e, treeId, treeNode) {
if(native_name == treeNode.name){
return;
}
var data = {id:treeNode.id,level_id:treeNode.level,pid:treeNode.pId,name:treeNode.name};
$.ajax({
async: false,
type: "post",
data:data,
url: "<%=request.getContextPath() %>/library/updateLibraryName/ ",
success : function(json){
if(json == "success" ){
alert('操作成功!');
} else{
alert('亲，操作失败，请稍后再试！');
}
},
error : function() {
alert('亲，网络有点不给力呀！');
}
});
}
//加入子分类
function addHoverDom(treeId, treeNode) {
var sObj = $("#" + treeNode.tId + "_span");
if (treeNode.editNameFlag || $("#addBtn_" +treeNode.tId).length>0 || treeNode.level == 3) return;
var addStr = "<span class='button add' id='addBtn_" + treeNode.tId + "' title='加入分类' onfocus='this.blur();'></span>";
sObj.after(addStr);
var btn = $("#addBtn_" +treeNode.tId);
if (btn) btn.bind("click" , function(){
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
var treeNodes;
$.ajax({
async: false,
type: "post",
url: "<%=request.getContextPath() %>/library/saveLibrary/ ",
success : function(libraryId){
if(libraryId != "" ){
treeNodes = zTree.addNodes(treeNode, {id:(libraryId), pId:treeNode.id, name:"请输入名称" });
}
if (treeNodes) {
zTree.editName(treeNodes[0]);
}
},
error : function(){
alert('亲，网络有点不给力呀！');
}
});
return false;
});
}
//父级分类去除删除功能
function setRemoveBtn(treeId, treeNode) {
return !treeNode.isParent;
}
//鼠标移开button消失
function removeHoverDom(treeId, treeNode) {
$( "#addBtn_"+treeNode.tId).unbind().remove();
};
//加入button点击事件
function addClick(){
$( "#addParent").bind("click" , {isParent:true}, add);
}
//移除分类
function remove(e) {
var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
nodes = zTree.getSelectedNodes(),
treeNode = nodes[0];
if (nodes.length == 0) {
alert( "亲，请先选择一个分类!" );
return;
}
var callbackFlag = $("#callbackTrigger" ).attr("checked");
zTree.removeNode(treeNode, callbackFlag);
};
//展开所有分类
function expandAllFlag(){
zTree_Menu.expandAll( true);
}
//合并所有分类
function combineAllFlag(){
zTree_Menu.expandAll( false);
}
//载入ztree
function onloadZTree(){
var ztreeNodes;
$.ajax( {
async : true, //是否异步
cache : false, //是否使用缓存
type : 'post', //请求方式,post
dataType : "json", //传输数据格式
url : "<%=request.getContextPath() %>/library/findAllLibrary/ ", //请求链接
error : function() {
alert('亲，网络有点不给力呀！');
},
success : function(data) {
ztreeNodes = eval( "["+data+"]" ); //将string类型转换成json对象
$.fn.zTree.init($( "#treeDemo"), setting, ztreeNodes);
zTree_Menu = $.fn.zTree.getZTreeObj("treeDemo" );
$( "#selectAll").bind("click" , selectAll);
expandAllFlag();
addClick();
}
});
}
//初始化操作
$(document).ready( function(){
onloadZTree();
});
</script>
备注：后台传过来的json数据一定运行这个操作：eval( "["+data+"]" ) 将string转换为对象
Controller层代码例如以下：
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping(value="library/")
public class LibraryController {
@Autowired
public LibraryService libraryService;
/**
* 跳转到分类页面
* @return
*/
@RequestMapping(value="toListLibrary/")
public String toListLibrary(){
return "library/listLibrary";
}
/**
* 查询全部分类信息
* @return
*/
@RequestMapping(value="findAllLibrary/")
@ResponseBody
public List<Object> findAllLibrary(HttpServletRequest request, HttpServletResponse response){
return libraryService.findAllLibrary();
}
/**
* 保存分类
* @return
*/
@RequestMapping(value="saveLibrary/")
@ResponseBody
public String saveLibrary(HttpServletRequest request, HttpServletResponse response){
String libraryId = UUIDUtil.randomUUID();
return libraryId;
}
/**
* 更新分类名称
* @return
*/
@RequestMapping(value="updateLibraryName/")
@ResponseBody
public String updateLibraryName(HttpServletRequest request, HttpServletResponse response, Library library) {
String createname=(String) request.getSession().getAttribute(Constants.CURRENT_USER_NAME);
library.setCreate_user(createname);
library.setUpdate_user(createname);
return libraryService.addOrUpdateLibrary(library);
}
/**
* 删除分类
* @return
*/
@RequestMapping(value="deleteLibrary/")
@ResponseBody
public String deleteLibrary(HttpServletRequest request, HttpServletResponse response,@RequestParam(value = "id") String id) {
return libraryService.deleteLibrary(id);
}
}
service层代码例如以下：
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class LibraryService {
protected final static Log log = LogFactory.getLog(LibraryService.class);
@Autowired
private LibraryMapper libraryMapper;
/**
* 查询全部分类信息
* @return
*/
public List<Object> findAllLibrary(){
List<Object> listZTree = new ArrayList<Object>();
List<Library> listLibrary = libraryMapper.findAllLibrary();
String str = "";
for (int i = 0; i < listLibrary.size(); i++) {
Library library = listLibrary.get(i);//分类信息
str = "{id:'" +library.getId() + "', pId:'"+library.getPid()+"', name:\""+library.getName()+"\" }";//封装ztree须要格式的字符串
log.info(str);
listZTree.add(str);
}
return listZTree;
}
/**
* 保存或更新分类信息
* @param library
* @return
*/
public String addOrUpdateLibrary(Library library){
int numFlag = 0;
//依据id查询分类信息
if (StringUtils.isBlank(library.getId())) {
return "error";
}
int num = libraryMapper.findLibraryById(library.getId());
if (num >0) {//更新信息
library.setUpdate_time(new Date());
library.setCreate_user(null);
library.setPid(null);
numFlag = libraryMapper.updateByPrimaryKeySelective(library);
}else{//插入信息
if(library.getPid().equals("null")){
library.setPid("0");
}
int orderId = libraryMapper.findLastLibrary(library);
orderId++;
library.setCreate_time(new Date());
library.setUpdate_time(new Date());
library.setOrder_id(orderId);
numFlag = libraryMapper.insert(library);
}
return "success";
}
/**
* 删除分类
* @param id
* @return
*/
public String deleteLibrary(String id){
int num = libraryMapper.deleteByPrimaryKey(id);
return "success";
}
}备注：运行完数据操作须要推断返回值，这里我直接返回success活error了。
Mapper层代码例如以下
import java.util.List;
import java.util.Map;
public interface LibraryMapper extends BaseMapper<Library,String>{
/**
* 查询全部分类信息
* @return
*/
public List<Library> findAllLibrary();
/**
* 依据id查询条数
* @param id
* @return
*/
public int findLibraryById(String id);
/**
* 查询最大排序号
* @return
*/
public int findLastLibrary(Library library);
}备注：BaseMapper里有几个公用的增删改查的方法，Library是数据库表相应的实体，都非常easy，避免代码过多这里就省略了
备注：mapper相应的xml与jsp相应的VO层代码例如以下：
public class LibraryVo { /* id */ private String id; /* 目标id */ private String targetId; /* pid */ private String pId; /* 目标pid */ private String targetPId; /* "inner"：成为子节点，"prev"：成为同级前一个节点，"next"：成为同级后一个节点 */ private String moveType; public String getId() { return id; } public void setId(String id) { this. id = id; } public String getTargetId() { return targetId; } public void setTargetId(String targetId) { this. targetId = targetId; } public String getpId() { return pId; } public void setpId(String pId) { this. pId = pId; } public String getTargetPId() { return targetPId; } public void setTargetPId(String targetPId) { this. targetPId = targetPId; } public String getMoveType() { return moveType; } public void setMoveType(String moveType) { this. moveType = moveType; } }
上面的代码实现了主要的增删改查，有哪些地方有问题欢迎指正，也欢迎交流，每一次的进步都离不开大家的帮助。