How to dynamically load data using treeview in the Bootstrap framework

This article implements the use of bootstrap treeview to dynamically load data, and adds a quick search function. Friends who need it can refer to it

Write in front:

The jQuery multi-level list tree plug-in is based on Bootstrap and displays some inheritance tree structures, such as view trees, list trees, etc., in a simple and elegant way.

Practical Bootstrap tree menu special effects plug-in Bootstrap Tree View, a very good Bootstrap plug-in. Now many pages produced by Bootstrap require this function. This plug-in requires Bootstrap 3 version and jQuery 2.0 or above version support, and supports many parameters The customization functions, such as colors, background colors, icons, links, etc., are still very good.

For specific effects, please temporarily move to: http://jonmiles.github.io/bootstrap-treeview/

Okay, without further ado, let’s get started.

Requires users to quickly query the regional name information of provinces and cities (for user reference, used to standardize writing and import templates), and display it in a tree structure.

Final effect display:

1. Data table structure The data source is the provincial and municipal regional information table, which is a self-associated structure. As shown in the picture:

2. Front page

1. Page introduction

<link rel="stylesheet" href="项目静态资源路径/bootstrap-treeview/css/bootstrap.css" rel="external nofollow" >
 <script type="text/javascript" src="项目静态资源路径/js/jquery/3.1.0/jquery-3.1.0.min.js"></script>
 <script type="text/javascript" src="项目静态资源路径/bootstrap/bootstrap.js"></script>
 <script type="text/javascript" src="项目静态资源路径/bootstrap-treeview/js/jquery.js"></script>
 <script type="text/javascript" src="项目静态资源路径/bootstrap-treeview/js/bootstrap-treeview.js"> </script>

2. Page display area

<!-- 省市区地域查询展示 -->
 <p class="container">
  <p class="row">
  <p class="col-sm-4">
   <h4>快捷搜索</h4>
   <!-- <form> -->
   <p class="form-group">
    <label for="input-search" class="sr-only">快捷搜索:</label>
    <input type="input" class="form-control" id="input-search" placeholder="请输入要查询的省市区名称信息..." value="">
   </p>
   **_ <!-- 该部分为复选框，用于丰富搜索体验，本文忽略
<p class="checkbox">
    <label>
    <input type="checkbox" class="checkbox" id="chk-ignore-case" value="false"/>
     忽略大小写
    </label>
   </p>
   <p class="checkbox">
    <label>
    <input type="checkbox" class="checkbox" id="chk-exact-match" value="false">
     准确匹配
    </label>
   </p>
   <p class="checkbox">
    <label>
    <input type="checkbox" class="checkbox" id="chk-reveal-results" value="false">
     显示结果
    </label>
   </p> -->_**
   <button type="button" class="btn btn-success" id="btn-search">搜索</button>
   <button type="button" class="btn btn-default" id="btn-clear-search">清除</button>
   <!-- </form> -->
  </p>
  <p class="col-sm-4">
   <h4>省市区名称层级树</h4>
   <p id="treeview-searchable" class=""></p>
  </p>
  <p class="col-sm-4">
   <h4>查询结果展示</h4>
   <p id="search-output"></p>
  </p>
  </p>
  </p>

3.js script

$(function () {
  var defaultData;
   $.ajax({
    type: "post",
    url: "项目请求路径方法.json",
    dataType: "json",
    success: function (result) { 
    defaultData=result;
     var initSearchableTree = function() {
     return $('#treeview-searchable').treeview({
      data: defaultData,
      nodeIcon: 'glyphicon glyphicon-globe',
      emptyIcon: '', //没有子节点的节点图标
      //collapsed: true,
     });
     };
     var $searchableTree = initSearchableTree();
     $('#treeview-searchable').treeview('collapseAll', { 
     silent : false//设置初始化节点关闭
    });
     var findSearchableNodes = function() {
     return $searchableTree.treeview('search', [ $.trim($('#input-search').val()), { ignoreCase: false, exactMatch: false } ]);
     };
     var searchableNodes = findSearchableNodes();
     // Select/unselect/toggle nodes
     $('#input-search').on('keyup', function (e) {
     var str = $('#input-search').val(); 
     if($.trim(str).length>0){
      searchableNodes = findSearchableNodes();
     } else {
     $('#treeview-searchable').treeview('collapseAll', { 
      silent : false //设置初始化节点关闭
     });
     }
     //$('.select-node').prop('disabled', !(searchableNodes.length >= 1));
     });
    var search = function(e) {
      var pattern = $.trim($('#input-search').val());
      var options = {
      ignoreCase: $('#chk-ignore-case').is(':checked'),
      exactMatch: $('#chk-exact-match').is(':checked'),
      revealResults: $('#chk-reveal-results').is(':checked')
      };
      var results = $searchableTree.treeview('search', [ pattern, options ]);
      var output = &#39;<p>&#39; + results.length + &#39; 匹配的搜索结果</p>&#39;;
      $.each(results, function (index, result) {
      output += &#39;<p>- <span style="color:red;">&#39; + result.text + &#39;</span></p>&#39;;
      });
      $(&#39;#search-output&#39;).html(output);
     }
     $(&#39;#btn-search&#39;).on(&#39;click&#39;, search);
     $(&#39;#input-search&#39;).on(&#39;keyup&#39;, search);
     $(&#39;#btn-clear-search&#39;).on(&#39;click&#39;, function (e) {
      $searchableTree.treeview(&#39;clearSearch&#39;);
      $(&#39;#input-search&#39;).val(&#39;&#39;);
      $(&#39;#search-output&#39;).html(&#39;&#39;);
      $(&#39;#treeview-searchable&#39;).treeview(&#39;collapseAll&#39;, {
      silent : false//设置初始化节点关闭
     });
     });
    
    },
    error: function () {
     alert("省市区地域信息加载失败！")
    }
   });
  });

3. The main code in the background uses the SpringMVC Spring Mybatis framework. The following is the Controller layer code

@ResponseBody
@RequestMapping(value = "/queryAreaInfo", method = { RequestMethod.POST }, produces = MediaType.APPLICATION_JSON_VALUE)
 public List<Object> queryAreaInfo() {
 List<AreaVO> areaInfo=new ArrayList<>();
 try {
 //获取缓存中的省市区信息（本项目直接从缓存中获取，也可以单独写方法到Service、Dao层查询）
 EcncSysConfig sysConfig = new EcncSysConfig();
 areaInfo = sysConfig.INIT_SYS_ECNC_AREAVO;
 } catch (Throwable e) {
 e.printStackTrace();
 }
 //盛放省份
 List<Object> result=new ArrayList<>();
 for (AreaVO areaVO : areaInfo) {
 Map<String, Object> map= new HashMap<>();
 if("2".equals(areaVO.getGrade())){
 map.put("text", areaVO.getName());
 //盛放地市
 List<Object> cList=new ArrayList<>();
 for (AreaVO cVO : areaInfo) {
  Map<String, Object> cMap=new HashMap<>();
  if (cVO.getParentId() != null && cVO.getParentId().equals(areaVO.getId())) {
  cMap.put("text", cVO.getName());
  //盛放区县
  List<Object> rList=new ArrayList<>();
  for (AreaVO rVO : areaInfo) {
  Map<String, Object> rMap=new HashMap<>();
  if (cVO.getId().equals(rVO.getParentId())) {
  rMap.put("text", rVO.getName());
  rList.add(rMap);
  }
  }
  cMap.put("nodes", rList);
  cList.add(cMap);
  }
 }
 map.put("nodes", cList);
 result.add(map);
 }
 }
 return result;
 }

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future. help.

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