spring mvc 导出 excel

 // js 触发导出 excel 方法  导出当前页的数据 含有条件查询的结果
 // js 框架使用的 是 easyui
 function doExport(){

     var optins = $("#grid").datagrid("getPager").data("pagination").options;
     var page = optins.pageNumber;
     var rows = optins.pageSize;
     var cpname=$("#cpname_id").val();
     var adname=$("#adname_id").val();
     var start = $("#start_id").val();
     var end = $("#end_id").val();
     $("<form>").attr({
         "action":"${ctx}/rest/trafficbill/doexporttrafficaccount",
         "method":"POST"
     }).append("<input type='text' name='page' value='"+page+"'/>")
       .append("<input type='text' name='cpname' value='"+cpname+"'/>")
       .append("<input type='text' name='adname' value='"+adname+"'/>")
       .append("<input type='text' name='startTime' value='"+start+"'/>")
       .append("<input type='text' name='endTime' value='"+end+"'/>")
     .append("<input type='text' name='rows' value='"+rows+"'/>").submit();
 }

 // poi 操作 excel 的 工具类

 package com.manage.util;

 import java.util.Date;
 import java.util.List;
 import java.util.Map;

 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import org.apache.poi.hssf.usermodel.HSSFCell;
 import org.apache.poi.hssf.usermodel.HSSFCellStyle;
 import org.apache.poi.hssf.usermodel.HSSFFont;
 import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 import org.springframework.web.servlet.view.document.AbstractExcelView;

 import com.pojo.subaccount.PageData;

 /**
  *
  * @author jemond
  *
  * 2015年6月26日上午9:42:48
  */
 public class ObjectExcelView extends AbstractExcelView{

     @SuppressWarnings("deprecation")
     @Override
     protected void buildExcelDocument(Map<String, Object> model,
             HSSFWorkbook workbook, HttpServletRequest request,
             HttpServletResponse response) throws Exception {

         Date date = new Date();
         String filename = Tools.date2Str(date, "yyyyMMddHHmmss");
         HSSFSheet sheet;
         HSSFCell cell;
         response.setContentType("application/octet-stream");
         response.setHeader("Content-Disposition", "attachment;filename="+filename+".xls");
         sheet = workbook.createSheet("sheet1");

         @SuppressWarnings("unchecked")
         List<String> titles = (List<String>) model.get("titles");
         int len = titles.size();
         HSSFCellStyle headerStyle = workbook.createCellStyle(); //标题样式
         headerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
         headerStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
         HSSFFont headerFont = workbook.createFont();    //标题字体
         headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
         headerFont.setFontHeightInPoints((short)11);
         headerStyle.setFont(headerFont);
         short width = 20,height=25*20;
         sheet.setDefaultColumnWidth(width);
         for(int i=0; i<len; i++){ //设置标题
             String title = titles.get(i);
             cell = getCell(sheet, 0, i);
             cell.setCellStyle(headerStyle);
             setText(cell,title);
         }
         sheet.getRow(0).setHeight(height);

         HSSFCellStyle contentStyle = workbook.createCellStyle(); //内容样式
         contentStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
         @SuppressWarnings("unchecked")
         List<PageData> varList = (List<PageData>) model.get("varList");
         int varCount = varList.size();
         for(int i=0; i<varCount; i++){
             PageData vpd = varList.get(i);
             for(int j=0;j<len;j++){
                 String varstr = vpd.getString("var"+(j+1)) != null ? vpd.getString("var"+(j+1)) : "";
                 cell = getCell(sheet, i+1, j);
                 cell.setCellStyle(contentStyle);
                 setText(cell,varstr);
             }

         }

     }

 }

 // controller 导出excel 

  @RequestMapping("/doexporttrafficaccount")
     public ModelAndView doExportTrafficAccount(@RequestParam(value = "page", defaultValue = "1") Integer page,
             @RequestParam(value = "rows", defaultValue = "30") Integer rows,String cpname,String adname,String startTime,String endTime) throws Exception {

         // 构造一个查询条件
         TvgameBillingTraffic tbt = new TvgameBillingTraffic();

         if(StringUtils.isNotBlank(cpname)){
            tbt.setCpname(cpname);
         }
         if(StringUtils.isNotBlank(adname)){
            tbt.setAdname(adname);
         }
         if(StringUtils.isNotBlank(startTime)){
            tbt.setStartTime(DateFormatUtil.dateToStartTime(startTime));
         }
         if(StringUtils.isNotBlank(endTime)){
            tbt.setEndTime(DateFormatUtil.dateToEndTime(endTime));

         }
         // 得到 当前页的所有数据
          EasyUIResult account = this.trafficAccountService.queryTrafficAccount(page, rows, tbt);

         @SuppressWarnings({"unchecked"})
         List<TvgameBillingTraffic> userList = (List<TvgameBillingTraffic>)account.getRows();

         // 封装 excel 参数
         try {

             // 参数 MAP
             Map<String, Object> dataMap = new HashMap<String, Object>();

             // 设置标题
             List<String> titles = new ArrayList<String>();
             titles.add("账务编号"); //
             titles.add("CP名称"); //
             titles.add("计费策略"); //
             titles.add("流量名称"); //
             titles.add("计价金额"); //
             titles.add("流量流水"); //
             titles.add("创建时间"); //
             titles.add("结算状态"); //
             dataMap.put("titles", titles);

             // 存放内容的集合
             List<PageData> varList = new ArrayList<PageData>();

             for (TvgameBillingTraffic p : userList) {
                 PageData vpd = new PageData();
                 vpd.put("var1", String.valueOf(p.getId())); //
                 vpd.put("var2", p.getCpname()); //
                 vpd.put("var3", p.getChargingname()); //
                 vpd.put("var4", p.getAdname()); //
                 vpd.put("var5", String.valueOf(p.getPrice())); //
                 vpd.put("var6", p.getTraffic()); // 6

                 // 格式化时间  存在数据库是 毫秒 值
                 long createTime = p.getCreateTime();
                 String data = DateFormatUtils.getData(createTime);
                 vpd.put("var7", data); // 7

              // 格式化结算状态 存在数据 是 0 或1
                 String settString = "" ;
                 byte settlement = p.getSettlement();
                 if(settlement == 0){
                     settString = "未结算";
                 }else if (settlement == 1) {

                     settString = "已经结算";
                 }else{
                     settString = "未知状态";
                 }
                 vpd.put("var8", settString); //
                 varList.add(vpd);
             }

             dataMap.put("varList", varList);

             // 执行excel操作  是一个视图
             ObjectExcelView erv = new ObjectExcelView();
             ModelAndView mv = new ModelAndView(erv, dataMap);
             return mv;
         } catch (Exception e) {
             LOGGER.error("错误");
             return null;
         }

     }

 // 操作时间的 工具类

 /**
  *
  * @author jemond
  *
  * 2015年6月20日上午9:42:48
  */
 package com.common.util;

 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;

 public class DateFormatUtils {

     public static int getSecond(){
         String secondStr = String.valueOf(System.currentTimeMillis());
         String second = secondStr.substring(0,secondStr.length()-3);
         return Integer.valueOf(second);
     }

     public static String getData(long time){
         time = time * 1000 ;
         SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         String format = sdf.format(new Date(time));
         return format;
     }

     public static String getDateShout(long time){
          time = time * 1000 ;
             SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");
             String format = sdf.format(new Date(time));
             return format;
     }

     public static long getDateByLong(){

         SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");
         long time=0;
         try {

             Calendar c = Calendar.getInstance();
             c.add(Calendar.DATE, - 7);
             Date monday = c.getTime();
             String preMonday = sdf.format(monday);

             time=sdf.parse(preMonday).getTime()/1000;

         } catch (ParseException e) {

             e.printStackTrace();
         }
         return time;

     }

     /*public static void main(String[] args) {
         Float p = 565654656565656645645645454564.2265665656f;
             System.out.println(getData(1435547609)+"=="+p);

         }*/
 }

 // spring mvc 的 部分 配置
 <!-- 配置视图解析器 -->
     <bean
         class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <!-- 前缀 -->
         <property name="prefix" value="/WEB-INF/views/" />
         <!-- 后缀 -->
         <property name="suffix" value=".jsp" />
         <!-- 查找顺序 -->
         <!-- <property name="order" value="2"/> -->
     </bean>

   <!-- 定义Excel视图对象 -->
  <!--    <bean name="utilView" class="com.manage.util.ObjectExcelView "/>

     定义，根据bean的名称查找视图
     <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">
         查找顺序
         <property name="order" value="1"/>
     </bean> -->