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java 导出excel文件------第一种方法

2017-03-31 15:16 453 查看
1.第一种方法

  首先,定义一个ExlBean.java,主要定义excel的表头标题,我这里定义的是个map,如下代码:

public class ExlBean {
public static Map<String, String> map = new HashMap<String, String>();

static {
map.put("ordNO", "相应合同号");
map.put("regionalManager", "区域经理");
map.put("salesDirector", "销售总监");
map.put("cityManager", "城市经理");
map.put("vipDetection", "vip检测");
map.put("technician", "技术专员");

map.put("staffName", "评估员姓名");
map.put("orderSaleNum","销售员(出单)");
map.put("orderRegionalManageNum","区域经理(出单)");
map.put("technicianNum","技术专员(出单)");
map.put("vipDetectionNum","检测师(出单)");
map.put("chargeSaleNum","销售员(销售)");
map.put("chargeRegionalManageNum","区域经理(销售)");
}

}


其次,就是根据要求获取你自己要导出的数据列表,我这边返回的数据列表类型是List<Map<String,String>>类型,并且单个数据项要和ExlBean.java中定义的key要一致。代码如下:

@ResponseBody
@RequestMapping(value = "/stats4-{type}/{name}.xls")
public void getExcelCarPerformance(@PathVariable String type,HttpServletRequest request, HttpServletResponse response, HttpSession session) {

String sDoneTimes=request.getParameter("sDoneTime");
String eDoneTimes=request.getParameter("eDoneTime");
BscCarPerformance bscCarPerformance=new BscCarPerformance();
bscCarPerformance.setsDoneTime(sDoneTimes);
bscCarPerformance.seteDoneTime(eDoneTimes);
List<Map<String, String>> list = this.carPerformanceService.findByCreateTime(bscCarPerformance);//获取到自己需要打印的数据列表

HSSFWorkbook workbook = new HSSFWorkbook();//创建HSSFWorlbook对象
try {
OutputStream os = response.getOutputStream();
HSSFSheet sheet = workbook.createSheet("sheet01");

Map<String, String> titleMap = ExlBean.map;//获取到自定义的工具类

if (list != null && list.size() > 0) {
// 生成excel的表头
Map<String, String> map1 = list.get(0);
HSSFRow row = sheet.createRow(0);//创建行
int j = 0;
for (String key : map1.keySet()) {
HSSFCell cell = row.createCell(j);
String title = titleMap.get(key);
if (title != null && title.length() > 0) {
cell.setCellValue(title);
} else {
cell.setCellValue(key);
}
j += 1;
}

// 循环列表,填充数据
for (int i = 1; i <= list.size() && i <= MAX_LINE; i++) {

HSSFRow row1 = sheet.createRow(i);//创建行

Map<String, String> map = list.get(i - 1);//获取列表中的数据项
int h = 0;
for (String key : map.keySet()) {//循环key
HSSFCell cell = row1.createCell(h);//创建单元格
Object obj = map.get(key);//获取对应key的值

if (map.get(key) != null) {
//对于特殊情况如果需要对某个单元格进行特殊操作的话,可以在这里进行代码编写,比如类型显示如下代码
if("1".equals(obj.toString())){
cell.setCellValue("延保订单");
}else if("2".equals(obj.toString())){
cell.setCellValue("充值订单");
}else{
cell.setCellValue(obj.toString());
}
} else {
cell.setCellValue("");
}
h += 1;
}

}
}
workbook.write(os);//把创建的OutputStream写入到workbook对象中
//最后一定要刷新和关闭流,否则报异常,导出失败。
os.flush();
os.close();

} catch (IOException e) {

logger.error(e, e);
}
}

我这里用的spring mvc注解进行的请求,小伙伴们可以根据自己的实际情况进行相应的操作。

在这里返回List对象类型是map类型的,其实大多数情况下大家返回的一般是自己创建的javabean,那么在这里应该怎么操作,其实这样的话,代码也是大同小异,但是就是有些繁琐,适合打印列数比较少的,如果打印列数比较多的话,我建议用上面的方法。代码如下:

HSSFWorkbook workbook = new HSSFWorkbook();
try {
OutputStream os = response.getOutputStream();
HSSFSheet sheet = workbook.createSheet("sheet01");

Map<String, String> titleMap = ExlBean.map;

if (list != null && list.size() > 0) {
// 生成表头
Sys_staffrole_rel map1 = list.get(0);
HSSFRow row = sheet.createRow(0);

HSSFCell cell = row.createCell(0);
String title = titleMap.get("staffName");
cell.setCellValue(title);

HSSFCell cell1 = row.createCell(1);
String title1 = titleMap.get("orderSaleNum");
cell1.setCellValue(title1);

HSSFCell cell2 = row.createCell(2);
String title2 = titleMap.get("orderRegionalManageNum");
cell2.setCellValue(title2);

HSSFCell cell3 = row.createCell(3);
String title3 = titleMap.get("technicianNum");
cell3.setCellValue(title3);

HSSFCell cell4 = row.createCell(4);
String title4 = titleMap.get("vipDetectionNum");
cell4.setCellValue(title4);

HSSFCell cell5 = row.createCell(5);
String title5 = titleMap.get("chargeSaleNum");
cell5.setCellValue(title5);

HSSFCell cell6 = row.createCell(6);
String title6 = titleMap.get("chargeRegionalManageNum");
cell6.setCellValue(title6);

// 填充数据
for (int i = 1; i <= list.size() && i <= MAX_LINE; i++) {

HSSFRow row1 = sheet.createRow(i);

Sys_staffrole_rel map = list.get(i - 1);
HSSFCell cell00 = row1.createCell(0);
cell00.setCellValue(map.getStaffName());

HSSFCell cell01 = row1.createCell(1);
cell01.setCellValue(map.getOrderSaleNum());

HSSFCell cell02 = row1.createCell(2);
cell02.setCellValue(map.getOrderRegionalManageNum());

HSSFCell cell03 = row1.createCell(3);
cell03.setCellValue(map.getTechnicianNum());

HSSFCell cell04 = row1.createCell(4);
cell04.setCellValue(map.getVipDetectionNum());

HSSFCell cell05 = row1.createCell(5);
cell05.setCellValue(map.getChargeSaleNum());

HSSFCell cell06 = row1.createCell(6);
cell06.setCellValue(map.getChargeRegionalManageNum());
}
}
这是核心操作,其他的不做过多介绍了。

到这里导出表格的操作已经基本可以完成了,这种方法用着还行,也方便管理。

           
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标签:  excel java