package ajax.ch3.treeview; import javax.servlet.ServletException; import javax.servlet.http.*; import ajax.ch3.treeview.*; public class TreeviewServlet extends HttpServlet { public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, java.io.IOException { String parentID = request.getParameter("parent");//获得id的值 if (parentID!=null&&!parentID.equals(""))//如果不为null和空 { Category category = new Category(Integer.parseInt(parentID));//创建Category对象 TreeviewElement[] top = category.getChildren();//得到该分类的所有下级分类 response.setContentType("text/html"); java.io.PrintWriter out = response.getWriter(); for(int i= 0;i<top.length;i++)//循环显示每个分类 out.println(treeviewRender.renderTreeViewAjax(top[i],false)); } } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, java.io.IOException { doPost(request, response); } }

还不是很完善，可以自己加以封装 // JavaScript Document var BoxWidth = 700// 资料表显示宽度 ( 不含卷轴 ) var ShowLine = 15// 资料表显示列数 var RsHeight = 21// 资料列高度 var LockCols = 1// 要锁定的栏位数 ( 由左至右 ) function WriteTable(){// 写入表格 var iBoxWidth=BoxWidth var NewHTML="<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr><td><div style=\"width:100%;overflow-x:scroll\"><table border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>" for(i=0;i<DataTitles.length;i++){ if(i<LockCols){ var cTitle=DataTitles[i].split("#") iBoxWidth-=cTitle[1] var DynTip=((i+1)==LockCols)?"解除锁定":"锁定此栏位" NewHTML+="<td><div class=\"title\" style=\"width:"+cTitle[1]+"px;height:"+RsHeight+"px\" title=\""+DynTip+"\" onclick=\"ResetTable("+i+")\">"+cTitle[0]+"</div></td>" } } NewHTML+="</tr><tr><td colspan=\""+LockCols+"\"><div id=\"DataFrame1\" style=\"position:relative;width:100%;overflow:hidden\"><div id=\"DataGroup1\" style=\"position:relative\"></div></div></td></tr></table></div></td><td valign=\"top\"><div style=\"width:"+iBoxWidth+"px;overflow-x:scroll\"><table border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>" for(i=0;i<DataTitles.length;i++){ if(i>=LockCols){ var cTitle=DataTitles[i].split("#") NewHTML+="<td><div class=\"title\" style=\"width:"+cTitle[1]+"px;height:"+RsHeight+"px\" title=\"锁定此栏位\" onclick=\"ResetTable("+i+")\">"+cTitle[0]+"</div></td>" } } NewHTML+="</tr><tr><td colspan=\""+(DataTitles.length-LockCols)+"\"><div id=\"DataFrame2\" style=\"position:relative;width:100%;overflow:hidden\"><div id=\"DataGroup2\" style=\"position:relative\"></div></div></td></tr></table></div></td><td valign=\"top\"><div id=\"DataFrame3\" style=\"position:relative;background:#000;overflow-y:scroll\" onscroll=\"SYNC_Roll()\"><div id=\"DataGroup3\" style=\"position:relative;width:1px;visibility:hidden\"></div></div></td></tr></table>" DataTable.innerHTML=NewHTML ApplyData() } function ApplyData(){// 写入资料 var NewHTML="<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\">" for(i=0;i<DataFields.length;i++){ NewHTML+="<tr>" for(j=0;j<DataTitles.length;j++){ if(j<LockCols){ var cTitle=DataTitles[j].split("#") NewHTML+="<td><div class=\"cdata\" style=\"width:"+cTitle[1]+"px;height:"+RsHeight+"px;text-align:"+cTitle[2]+"\">"+DataFields[i][j]+"</div></td>" } } NewHTML+="</tr>" } NewHTML+="</table>" DataGroup1.innerHTML=NewHTML var NewHTML="<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\">" for(i=0;i<DataFields.length;i++){ NewHTML+="<tr>" for(j=0;j<DataTitles.length;j++){ if(j>=LockCols){ var cTitle=DataTitles[j].split("#") NewHTML+="<td><div class=\"cdata\" style=\"width:"+cTitle[1]+"px;height:"+RsHeight+"px;text-align:"+cTitle[2]+"\">"+DataFields[i][j]+"</div></td>" } } NewHTML+="</tr>" } NewHTML+="</table>" DataGroup2.innerHTML=NewHTML DataFrame1.style.pixelHeight=RsHeight*ShowLine DataFrame2.style.pixelHeight=RsHeight*ShowLine DataFrame3.style.pixelHeight=RsHeight*ShowLine+RsHeight DataGroup3.style.pixelHeight=RsHeight*(DataFields.length+1) } function ResetTable(n){ var iBoxWidth=0 for(i=0;i<DataTitles.length;i++){ if(i<(n+1)){ var cTitle=DataTitles[i].split("#") iBoxWidth+=parseInt(cTitle[1]) } } if(iBoxWidth>BoxWidth){ var Sure=confirm("\n锁定栏位的宽度大於资料表显示的宽　　\n\n度，这可能会造成版面显示不正常。\n\n\n您确定要继续吗？") }else{ Sure=true } if(Sure){ LockCols=(LockCols==n+1)?0:n+1 WriteTable() } } function SYNC_Roll(){ DataGroup1.style.posTop=-DataFrame3.scrollTop DataGroup2.style.posTop=-DataFrame3.scrollTop } window.onload=WriteTable