通过Ajax请求动态填充页面数据的实例

//1.页面布局
<div style="padding: 0 0 20px 0;">
 <input type="hidden" class="tip" value="1">
 <input style="background:#01affe;color: #FFF;cursor: pointer;
    text-align:center;height:30px;vertical-align: middle;padding:0 5px;
    type="button" name="more" id="more" value="加载更多" onclick="moreData();"/>
</div>

//2.js代码
function moreData(){
  var ptip = $('.tip').val();
  var jstr = {pageNo:ptip};
  $.ajax({
   url: '${rc.getContextPath()}/publicity/more.do',//url以具体为实现
   type: 'POST',
   dataType: 'html',
   data:jstr,
   timeout: 5000,
   cache: false,
   beforeSend: LoadFunction, //加载执行方法
   error: erryFunction, //错误执行方法
   success: succFunction //成功执行方法
  })

  function LoadFunction() {
   $("#more").val('加载中...');
  }
  function erryFunction() {
  alert("获取数据错误，请重试！");
  $("#more").val('加载更多');
  }
  function succFunction(data) {
  if(data!=null && data!=""){
   $('.tip').val(++ptip);
   $("#more").val('加载更多');
   $('.mainContent').append(data);
  }else{
   $("#more").val('无更多数据');
   $("#more").attr('disabled',true);
  }
 }

//3.后台代码
//3.1 java代码实现
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.appmoudle.base.Consts;
import com.appmoudle.model.ssdj.Publicity;
import com.appmoudle.service.PublicityService;

@Controller
@RequestMapping("/publicity")
public class MoreData {

 private String ftlURL = ".../publicity/MoreData.ftl";

 @Autowired
 private PublicityService publicityService;

 @RequestMapping(value="more",method=RequestMethod.POST)
 public String getMoreData(HttpServletRequest request,ModelMap map){
  Integer start = 0;
  String pageNo = request.getParameter("pageNo");
  if(pageNo!=null){
   start = Integer.parseInt(pageNo) * 20;
  }
  List<Publicity> dataList = publicityService.findList(start, Consts.PAGE_SIZE, null, "1", null, null);
  map.put("index_number", start);
  map.put("dataList", dataList);
  return ftlURL;
 }
}

//3.2 模板页面
//(MoreData.ftl)
<#if dataList??>
 <#list dataList as dataItem>
  <tr>
   <td class='f-blue'>${dataItem_index+1+index_number}</td>
   <td>
    <#if dataItem.comp_name?length > 12>
     ${dataItem.comp_name?substring(0,12)}..
    <#else>
     ${dataItem.comp_name}
    </#if>
   </td>
   <td>${dataItem.license_number}</td>
   <td>
    <#if dataItem.license_name?length > 10>
     ${dataItem.license_name?substring(0,10)}..
    <#else>
     ${dataItem.license_name}
    </#if>
   </td>  
   <td>
    <#if dataItem.validaty_start?has_content>
     ${dataItem.validaty_start?date}
    </#if>
   </td> 
   <td>
    <#if dataItem.validaty_end?has_content>
     ${dataItem.validaty_end?date}
    </#if>
   </td> 
   <td>
    <#if dataItem.license_content?length > 20>
     ${dataItem.license_content?substring(0,20)}..
    <#else>
     ${dataItem.license_content}
    </#if>
    </td>
  </tr>
 </#list>
</#if>