java中如何导出excel_java中如何导出excel表格

小鱼儿 2022-11-03 15:30 388阅读 0赞

前台代码：

function orderExport()\{

var orderNumber = $("\#orderNumber").val();

var userName = $("\#userName").val();

var mobile = $("\#mobile").val();

var status = $("\#status").val();

var startTime = $("\#startTime").val();

var endTime = $("\#endTime").val();

window.location.href = "/orderExport.html?orderNumber="+orderNumber+"& userName="+userName+

"&mobile="+mobile+"&status="+status+"&startTime="+startTime+"&endTime="+endTime;

//点击导出按钮调用function orderExport()需要查询的数据的条件带过去

后台代码：

@RequestMapping("/orderExport.html")

public void orderExport( HttpServletRequest request,

@RequestParam(value="userName",required = false)String userName,

@RequestParam(value="mobile",required = false)String mobile,

@RequestParam(value="orderNumber",required = false)String

@RequestParam(value="status",required = false)Byte status,

@RequestParam(value = "startTime", required = false) String startTime1,

@RequestParam(value = "endTime", required = false) String endTime1,

HttpServletResponse response)\{

//此处为查询的条件

SuBusiness business=WebUtil.getLoginUser(request);//登录人信息

business=SuBusinessService.selectByPhone(business.getMobile());

Map map=new HashMap();

map.put("sellerBusinessId", business.getId());

if(StringUtils.isNotBlank(userName))\{

map.put("userName", userName);

\}else\{

map.put("userName", null);

if(StringUtils.isNotBlank(mobile))\{

map.put("mobile", mobile);

\}else\{

map.put("mobile", null);

if(StringUtils.isNotBlank(orderNumber))\{

map.put("orderNumber", orderNumber);

\}else\{

map.put("orderNumber", null);

Date startTime = null;

Date endTime = null;

if(StringUtils.isNotBlank(startTime1))\{

String startTimeStr = startTime1+" 00:00:00";

String endTimeStr = "";

if(StringUtils.isBlank(endTime1))\{

endTimeStr = DateUtil.format(new Date(),"yyyy-MM-dd")+" 23:59:59";

\}else\{

endTimeStr = endTime1+" 23:59:59";

startTime = DateUtil.parse(startTimeStr, "yyyy-MM-dd HH:mm:ss");

endTime = DateUtil.parse(endTimeStr, "yyyy-MM-dd HH:mm:ss");

map.put("startTime", startTime);

map.put("endTime", endTime);

\}else\{

map.put("startTime", null);

map.put("endTime", null);

if(status.intValue()!=99)\{

map.put("status", status);

\}else \{

if (status.intValue()==0) \{

map.put("status", 0);

\}else \{

map.put("status", null);

//进行查询并导出

List orderList = orderService.queryOnlineList(map);

if (orderList != null && orderList.size()>0) \{//查询的数据不为空就对数据进行导出

//导出文件的标题

String title = "商城订单"+DateUtil.format(new Date(), "yyyyMMdd")+".xls";

//设置表格标题行

String\[\] headers = new String\[\] \{"序号","订单号", "花匠名称","订单时间","状态", "消费总额", "退款金额"\};

List dataList = new ArrayList();

Object\[\] objs = null;

for (Order order : orderList) \{//循环每一条数据

objs = new Object\[headers.length\];

objs\[0\] = order.getOrderNumber();//序号

objs\[1\] = order.getOrderNumber();//订单号

objs\[2\] = order.getUser().getRealname()+" "+order.getUser().getMobile();//花匠信息

if (order.getCreateDateTime() != null) \{

objs\[3\] = DateUtil.format(order.getCreateDateTime(), "yyyy-MM-dd HH:mm:ss");//订单时间

\}else \{

objs\[3\] = "无";

if (order.getStatus().intValue() == -1) \{

objs\[4\] = "未发货，申请退款";//状态

if (order.getStatus().intValue() == 0) \{

objs\[4\] = "已取消";//状态

if (order.getStatus().intValue() == 1) \{

objs\[4\]="待支付";//状态

if (order.getStatus().intValue() == 2) \{

objs\[4\] = "待发货";//状态

objs\[5\]=order.getPay();//消费金额

if (order.getRefundMoney() != null) \{

objs\[6\] = order.getRefundMoney();//退货金额

\}else \{

objs\[6\] = "0.0";

//数据添加到excel表格

dataList.add(objs);

//使用流将数据导出

OutputStream out = null;

try \{

//防止中文乱码

String headStr = "attachment; filename=\\"" + new String( title.getBytes("gb2312"), "ISO8859-1" ) + "\\"";

response.setContentType("octets/stream");

response.setContentType("APPLICATION/OCTET-STREAM");

response.setHeader("Content-Disposition", headStr);

out = response.getOutputStream();

//ExportExcel ex = new ExportExcel(title, headers, dataList);//有标题

ExportExcelSeedBack ex = new ExportExcelSeedBack(title, headers, dataList);//没有标题

ex.export(out);

\} catch (Exception e) \{

e.printStackTrace();

需要调用的工具类：ExportExcelSeedBack

如上操作会出现ExportExcelSeedBack错误：原因是因为是没有定义他的工具类，工具类如下：

public class ExportExcelSeedBack \{

//显示的导出表的标题

private String title;

//导出表的列名

private String\[\] rowName ;

private List dataList = new ArrayList();

HttpServletResponse response;

//构造方法，传入要导出的数据

public ExportExcelSeedBack(String title,String\[\] rowName,List dataList)\{

this.dataList = dataList;

this.rowName = rowName;

this.title = title;

/\*

\* 导出数据

\* \*/

public void export(OutputStream out) throws Exception\{

try\{

HSSFWorkbook workbook = new HSSFWorkbook(); // 创建工作簿对象

HSSFSheet sheet = workbook.createSheet(title); // 创建工作表

// 产生表格标题行

// HSSFRow rowm = sheet.createRow(0);

// HSSFCell cellTiltle = rowm.createCell(0);

//sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面 - 可扩展】

HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//获取列头样式对象

HSSFCellStyle style = this.getStyle(workbook); //单元格样式对象

// sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1)));//合并单元格

// cellTiltle.setCellStyle(columnTopStyle);

// cellTiltle.setCellValue(title);

// 定义所需列数

int columnNum = rowName.length;

HSSFRow rowRowName = sheet.createRow(0); // 在索引2的位置创建行(最顶端的行开始的第二行)

// 将列头设置到sheet的单元格中

for(int n=0;n

HSSFCell cellRowName = rowRowName.createCell(n); //创建列头对应个数的单元格

cellRowName.setCellType(HSSFCell.CELL\_TYPE\_STRING); //设置列头单元格的数据类型

HSSFRichTextString text = new HSSFRichTextString(rowName\[n\]);

cellRowName.setCellValue(text); //设置列头单元格的值

cellRowName.setCellStyle(columnTopStyle); //设置列头单元格样式

//将查询出的数据设置到sheet对应的单元格中

for(int i=0;i

Object\[\] obj = dataList.get(i);//遍历每个对象

HSSFRow row = sheet.createRow(i+1);//创建所需的行数(从第二行开始写数据)

for(int j=0; j

HSSFCell cell = null; //设置单元格的数据类型

if(j == 0)\{

cell = row.createCell(j,HSSFCell.CELL\_TYPE\_NUMERIC);

cell.setCellValue(i+1);

\}else\{

cell = row.createCell(j,HSSFCell.CELL\_TYPE\_STRING);

if(!"".equals(obj\[j\]) && obj\[j\] != null)\{

cell.setCellValue(obj\[j\].toString()); //设置单元格的值

cell.setCellStyle(style); //设置单元格样式

//让列宽随着导出的列长自动适应

for (int colNum = 0; colNum < columnNum; colNum++) \{

int columnWidth = sheet.getColumnWidth(colNum) / 256;

for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) \{

HSSFRow currentRow;

//当前行未被使用过

if (sheet.getRow(rowNum) == null) \{

currentRow = sheet.createRow(rowNum);

\} else \{

currentRow = sheet.getRow(rowNum);

// if (currentRow.getCell(colNum) != null) \{

// HSSFCell currentCell = currentRow.getCell(colNum);

// if (currentCell.getCellType() == HSSFCell.CELL\_TYPE\_STRING) \{

// int length = currentCell.getStringCellValue().getBytes().length;

// if (columnWidth < length) \{

// columnWidth = length;

// \}

if (currentRow.getCell(colNum) != null) \{

HSSFCell currentCell = currentRow.getCell(colNum);

if (currentCell.getCellType() == HSSFCell.CELL\_TYPE\_STRING) \{

int length = 0;

try \{

length = currentCell.getStringCellValue().getBytes().length;

\} catch (Exception e) \{

e.printStackTrace();

if (columnWidth < length) \{

columnWidth = length;

if(colNum == 0)\{

sheet.setColumnWidth(colNum, (columnWidth-2) \* 256);

\}else\{

sheet.setColumnWidth(colNum, (columnWidth+4) \* 256);

if(workbook !=null)\{

try\{

workbook.write(out);

\}catch (IOException e) \{

e.printStackTrace();

\}catch(Exception e)\{

e.printStackTrace();

finally\{

out.close();

/\*

\* 列头单元格样式

\*/

public HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) \{

// 设置字体

HSSFFont font = workbook.createFont();

//设置字体大小

font.setFontHeightInPoints((short)11);

//字体加粗

font.setBoldweight(HSSFFont.BOLDWEIGHT\_BOLD);

//设置字体名字

font.setFontName("Courier New");

//设置样式;

HSSFCellStyle style = workbook.createCellStyle();

//设置底边框;

style.setBorderBottom(HSSFCellStyle.BORDER\_THIN);

//设置底边框颜色;

style.setBottomBorderColor(HSSFColor.BLACK.index);

//设置左边框;

style.setBorderLeft(HSSFCellStyle.BORDER\_THIN);

//设置左边框颜色;

style.setLeftBorderColor(HSSFColor.BLACK.index);

//设置右边框;

style.setBorderRight(HSSFCellStyle.BORDER\_THIN);

//设置右边框颜色;

style.setRightBorderColor(HSSFColor.BLACK.index);

//设置顶边框;

style.setBorderTop(HSSFCellStyle.BORDER\_THIN);

//设置顶边框颜色;

style.setTopBorderColor(HSSFColor.BLACK.index);

//在样式用应用设置的字体;

style.setFont(font);

//设置自动换行;

style.setWrapText(false);

//设置水平对齐的样式为居中对齐;

style.setAlignment(HSSFCellStyle.ALIGN\_CENTER);

//设置垂直对齐的样式为居中对齐;

style.setVerticalAlignment(HSSFCellStyle.VERTICAL\_CENTER);

return style;

/\*

\* 列数据信息单元格样式

\*/

public HSSFCellStyle getStyle(HSSFWorkbook workbook) \{

// 设置字体

HSSFFont font = workbook.createFont();

//设置字体大小

//font.setFontHeightInPoints((short)10);

//字体加粗

//font.setBoldweight(HSSFFont.BOLDWEIGHT\_BOLD);

//设置字体名字

font.setFontName("Courier New");

//设置样式;

HSSFCellStyle style = workbook.createCellStyle();

//设置底边框;

style.setBorderBottom(HSSFCellStyle.BORDER\_THIN);

//设置底边框颜色;

style.setBottomBorderColor(HSSFColor.BLACK.index);

//设置左边框;

style.setBorderLeft(HSSFCellStyle.BORDER\_THIN);

//设置左边框颜色;

style.setLeftBorderColor(HSSFColor.BLACK.index);

//设置右边框;

style.setBorderRight(HSSFCellStyle.BORDER\_THIN);

//设置右边框颜色;

style.setRightBorderColor(HSSFColor.BLACK.index);

//设置顶边框;

style.setBorderTop(HSSFCellStyle.BORDER\_THIN);

//设置顶边框颜色;

style.setTopBorderColor(HSSFColor.BLACK.index);

//在样式用应用设置的字体;

style.setFont(font);

//设置自动换行;

style.setWrapText(false);

//设置水平对齐的样式为居中对齐;

style.setAlignment(HSSFCellStyle.ALIGN\_CENTER);

//设置垂直对齐的样式为居中对齐;

style.setVerticalAlignment(HSSFCellStyle.VERTICAL\_CENTER);

return style;

此时就可以将数据完美导出来：

java中如何导出excel_java中如何导出excel表格

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