ajax3

wangbing6557

于 2009-11-18 17:57:00 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/wangbing6557/article/details/4829990

本文介绍了一种基于Java的Web应用中实现产品族下拉菜单的方法。通过参数获取已选产品族信息，并据此查询其子类别，动态生成带有默认选中项的下拉菜单。该方法使用了自定义的PBIResourceCategoryProcess类来处理产品族数据。

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<%
String plselect = request.getParameter("plselect");
PBIResourceCategoryProcess process = new PBIResourceCategoryProcess();
QueryResult pmResult = null;

if(plselect!=null&&!plselect.equals("")){
  pmResult = process.queryAllChilds(plselect);
}
PBIResourceCategory pbiRC = null;
if(pmResult!=null){
  out.println("<font class='wizardlabel'>产品族:</font>");
  out.println("<selectname='pmselect' onchange='onChangeProduct(this);'>");
  out.println("<option value=''>    </option>");
  while (pmResult.hasMoreElements()) {
            pbiRC = (PBIResourceCategory) pmResult.nextElement();
            String productFamilyID = pbiRC.getPbiID();
            String productFamilyName = pbiRC.getCategoryValue();
            if(productFamilyID.equals(plselect)){
            out.println("<option value="+productFamilyID+" selected>"+productFamilyName+"</option>");
    //out.println("<option value="+productFamilyID+" selected>"+productFamilyName+"</option>");
   }
   else{
    out.println("<option value="+productFamilyID+">"+productFamilyName+"</option>");
   }
  }
}
%>