java 导出EXCEL

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1、添加html

<form action="<%=path%>/black/exportExcel.html"    //此处后台地址
onsubmit="return checkUser();">
<div class="panel-heading">
<div class="row">
<div class="col-lg-3 col-md-3 col-xs-3"
style="margin-right: 0px;padding-right: 0px;">
<form class="form-inline">
<div class="form-group">
<div class="input-group">
<div class="input-group-addon">黑名单号码</div>
<input type="text" class="form-control input-sm" id="name"
name="blackname">
</div>
</div>
</form>

　　

2、

@RequestMapping("exportExcel")
public void exportExcel(HttpServletRequest req, HttpServletResponse res) throws Exception {
Domain domain = (Domain) req.getSession().getAttribute("Domainlogin");
String name = req.getParameter("blackname");
if (name == null) {
name = "";
}
List<Blacklist> list = blacklistservice.findAllNumber(domain.getDomainid(), name);
res.reset();
res.setContentType("application/vnd.ms-excel;charset=utf-8");
res.setContentType("application/x-xls");// 定义输出类型
String date = DateUtil.dateToStringT(new Date());
res.setHeader("Content-disposition", "attachment;filename=" + date + ".xls");
ExcelExportUtil<Blacklist> exportUtil = new ExcelExportUtil<Blacklist>();
String[] headers = { "id", "创建时间", "黑名单号码" };   
String[] columns = { "id", "createtime", "number" };
OutputStream outputStream = res.getOutputStream();
exportUtil.expoortExcelx("黑名单", headers, columns, list, outputStream, "yyyy-MM-dd HH:mm:ss");
outputStream.flush();
outputStream.close();
}

解释   headers 是导出excel的列名    columns 是对应的数据库的字段