1.这个条件是你已经从数据库中把分类的全部数据封装到一个list集合里面了。例如：城市集合。。List<City> cityList 这个city里面封装了区<西湖区/拱墅区等>全部。而区里面包含了小区(古荡/等)最后页面返回city对象了。。然后在jsp页面上循环。设置下拉选择框进行条件查询。<li>所在市：</li><li><select name="cityId" class="input2" id="cityId"><option value=''>—请选择—</option><s:iterator value="queryAddressList" var="fatherV"><s:if test="cityId == id"><option value="<s:property value='id'/>" selected="selected"><s:property value="cityName"/></option></s:if><s:else><option value="<s:property value='id'/>"><s:property value="cityName"/></option></s:else><s:iterator value="counties" var="sonV"><input type="hidden" name ="father_<s:property value='#fatherV.id'/>" value="<s:property value='#sonV.countyName'/>_<s:property value='#sonV.id'/>"/><s:iterator value="blocks" var="grandsonV"><input type="hidden" name ="son_<s:property value='#grandsonV.id'/>" value="<s:property value='#grandsonV.blockName'/>_<s:property value='#grandsonV.id'/>"/></s:iterator></s:iterator></s:iterator></select></li><li>所在区：</li><li><select name="countyId" class="input2" id="countyId"><option value="0">—请选择—</option><s:iterator value="queryAddressList"><s:if test="cityId == id"><s:iterator value="counties"><s:if test="countyId == id"><option value="<s:property value="id" />" selected="selected"><s:property value="countyName" /></option></s:if><s:else><option value="<s:property value="id" />"><s:property value="countyName" /></option></s:else></s:iterator></s:if></s:iterator></select></li><li>所在区域：</li><li><select name="blockId" class="input2" id="blockId"><option value="0" selected="selected">– 请选择 –</option><s:iterator value="queryAddressList"><s:if test="cityId == id"><s:iterator value="counties"><s:if test="countyId == id"><s:iterator value="blocks"><s:if test="blockId == id"><option value="<s:property value="id" />" selected="selected"><s:property value="blockName" /></option></s:if><s:else><option value="<s:property value="id" />"><s:property value="blockName" /></option></s:else></s:iterator></s:if></s:iterator></s:if></s:iterator></select></li>$(function(){/** 顶部查询-切换根据城市查找区 **/$("#cityId").change(function() {var value = $(this).val();$("#countyId").children().remove();$("#countyId").append("<option value='0'>–请选择–</option>");$("input[name^='father_"+value+"']").each(function(){var val = $(this).val();$("#countyId").append("<option value='"+val.split("_")[1]+"'>"+val.split("_")[0]+"</option>");});});/** 顶部查询-切换根据区查找区域 **/$("#countyId").change(function() {var value = $(this).val();$("#blockId").children().remove();$("#blockId").append("<option value='0'>–请选择–</option>");$("input[name^='son_"+value+"']").each(function(){var val = $(this).val();$("#blockId").append("<option value='"+val.split("_")[1]+"'>"+val.split("_")[0]+"</option>");});});});
，而是自己。在你成功地把自己推销给别人之前，
