好久没有使用ztree了，刚才在使用ztree做导航时遇到了几个小问题： 1、返回数据源是undefined 。 2、数据出现后树结构没有出现(pIdKey单词拼写错误).
在使用Oracle查询时，Oracle将所有列名转化为大写，我在JSON处理过程中手动将字段处理成小写。
js代码：
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<script type="text/javascript">
var
selectNode; // ztree选中节点
var
treeObj;
var
settings = {
data: {
key: {
name: "name"
},
simpleData: {
enable: true,
idKey: "id",
pIdKey: "pid"
}
},
callback: {
}
};
function
AjaxZtree() {
$.ajax({
type: ‘GET‘,
url: ‘../Analysis/Handler/Tree.ashx?action=report‘,
cache: true,
async: false,
dataType: "text",
ContentType: "application/json; charset=utf-8",
success: function
(data) {
$.fn.zTree.init($("#ReportTree"), settings, (new
Function(‘return‘
+ data))());
treeObj = $.fn.zTree.getZTreeObj("ReportTree");
},
error: function
() {
alert(‘Error‘);
}
});
}
$(document).ready(function
() {
AjaxZtree();
});
</script>
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ashx代码：
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public
void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string
action = context.Request.QueryString["action"];
if
(action == "report")
{
var
result = reportibll.ZtreeJSON();
string
json = ConvertJson.ToJson(result);
context.Response.Write(json);
}
else
{
}
}
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JSON处理代码：
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public
static string ToJson(DataTable dt)
{
StringBuilder jsonString = new
StringBuilder();
jsonString.Append("[");
DataRowCollection drc = dt.Rows;
for
(int
i = 0; i < drc.Count; i++)
{
jsonString.Append("{");
for
(int
j = 0; j < dt.Columns.Count; j++)
{
string
strKey = dt.Columns[j].ColumnName.ToLower();
string
strValue = drc[i][j].ToString();
Type type = dt.Columns[j].DataType;
jsonString.Append("\""
+ strKey + "\":");
strValue = StringFormat(strValue, type);
if
(j < dt.Columns.Count - 1)
{
jsonString.Append(strValue + ",");
}
else
{
jsonString.Append(strValue);
}
}
jsonString.Append("},");
}
jsonString.Remove(jsonString.Length - 1, 1);
jsonString.Append("]");
return
jsonString.ToString();
}
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