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javaweb--数据导出到excel

2015-05-10 22:43 211 查看

框架：spring （包括mvc）、ibatis、jquery easyui

前台js代码：

$(function(){
$('#dg').datagrid({
url:'book.json',
pagination:true,
singleSelect:true,
toolbar: [{
text:'导出excel',
iconCls: 'icon-edit',
handler: function(){
var s = $('#dg').datagrid("options").columns[0];
var title="";
var field="";
for(var i=0;i<s.length;i++){
title=title+s[i].title+',';
field = field+s[i].field+',';
}
title=title.substring(0,title.length-1);
field=field.substring(0,field.length-1);
$('#t1').attr("value",title);
$('#f1').attr("value",field);
$('#form2').submit();
}
}],
columns:[[
{field:'orderid',title:'订单号',width:100},
{field:'deskid',title:'桌号',width:100},
{field:'cusname',title:'预订人姓名',width:100,align:'right'},
{field:'cusnum',title:'预订人数',width:100,align:'right'},
{field:'cusphone',title:'预订手机号码',width:100,align:'right'},
{field:'ostate',title:'订单状态',width:100,align:'right'}
]]
});
})

jsp代码：

<body>
<table id="dg"></table>
<form id="form2" action="/WfjManage/outerBook.do"style="display:none">
<input id="t1" type="text" name="t" />
<input id="f1" type="text" name="f" />
</form>
</body>

后台util方法：

/**
* 设置excel的表头
* @param str 前台截取的title
* @param sheet  HSSFSheet的sheet
*/
public static void outerHeader(String[] str,HSSFSheet sheet){
//创建第一行
HSSFRow row = sheet.createRow(0);
HSSFCell cell = null;
for (int i = 0; i < str.length; i++) {
//为第一行写入数据
cell=row.createCell(i);
cell.setCellValue(str[i]);
}
}
/**
* 设置excel的数据
* @param str  获取的field
* @param sheet  HSSFSheet的sheet
* @param list   查询数据库获取的list数据
* @param rowIndex 开始行
*/
public static void outerColumns(String[] str,HSSFSheet sheet,List<Map<String, Object>> list,int rowIndex){
HSSFRow row;
int columnsNum = list.size();
for (int i = 0; i < columnsNum; i++) {
row=sheet.createRow(i+rowIndex);
Map<String, Object> obj = list.get(i);
for (int j = 0; j < str.length; j++) {
row.createCell(j).setCellValue(obj.get(str[j].toUpperCase()).toString());
}
}

}

action层代码：

@Autowired
IDishBookService iDishBookService;

@RequestMapping("/outerBook")
public void outerBook(HttpServletResponse response,HttpServletRequest request){
String[] str1 = request.getParameter("f").split(",");//前台截取的field
String s = null;
try {
s = new String(request.getParameter("t").getBytes("ISO-8859-1"),
"utf-8");//解决乱码
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
String[] str2 = s.split(",");//前台获取的title
response.setContentType("application/octet-stream");//设置数据类型
response.setHeader("content-disposition", "attachment;filename=outer.xls");//设置头信息    导出的xls名称
HSSFWorkbook workbook = new HSSFWorkbook();//创建工作簿
HSSFSheet sheet = workbook.createSheet("sheet0");//创建excel的sheet
Excel.outerHeader(str2, sheet);//static method 设置表头
Excel.outerColumns(str1, sheet, iDishBookService.showBook(), 1);//static method 写入值
try {
ServletOutputStream outputStream = response.getOutputStream();//输出流
workbook.write(outputStream);//写入工作簿
outputStream.flush();//释放
outputStream.close();//关闭
} catch (IOException e) {
e.printStackTrace();
}

}

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