通過Ajax請求動態(tài)填充頁面數(shù)據(jù)的實例

//1.頁面布局
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="加載更多" onclick="moreData();"/>
/div>

//2.js代碼
function moreData(){
  var ptip = $('.tip').val();
  var jstr = {pageNo:ptip};
  $.ajax({
   url: '${rc.getContextPath()}/publicity/more.do',//url以具體為實現(xiàn)
   type: 'POST',
   dataType: 'html',
   data:jstr,
   timeout: 5000,
   cache: false,
   beforeSend: LoadFunction, //加載執(zhí)行方法
   error: erryFunction, //錯誤執(zhí)行方法
   success: succFunction //成功執(zhí)行方法
  })

  function LoadFunction() {
   $("#more").val('加載中...');
  }
  function erryFunction() {
  alert("獲取數(shù)據(jù)錯誤，請重試！");
  $("#more").val('加載更多');
  }
  function succFunction(data) {
  if(data!=null  data!=""){
   $('.tip').val(++ptip);
   $("#more").val('加載更多');
   $('.mainContent').append(data);
  }else{
   $("#more").val('無更多數(shù)據(jù)');
   $("#more").attr('disabled',true);
  }
 }

//3.后臺代碼
//3.1 java代碼實現(xiàn)
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;
  }
  ListPublicity> dataList = publicityService.findList(start, Consts.PAGE_SIZE, null, "1", null, null);
  map.put("index_number", start);
  map.put("dataList", dataList);
  return ftlURL;
 }
}

//3.2 模板頁面
//(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 gt; 12>
     ${dataItem.comp_name?substring(0,12)}..
    #else>
     ${dataItem.comp_name}
    /#if>
   /td>
   td>${dataItem.license_number}/td>
   td>
    #if dataItem.license_name?length gt; 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 gt; 20>
     ${dataItem.license_content?substring(0,20)}..
    #else>
     ${dataItem.license_content}
    /#if>
    /td>
  /tr>
 /#list>
/#if>