Excel數據導出
一、應用場景
列表數據Excel表格導出
需要用到的工具類：ExportExcelUtils
package com.purete.agent.config.sys.poi;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
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.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.CellRangeAddress;
/**
* poi導出
* @author Administrator
*
*/
public class ExportExcelUtils {
private String title; // 導出表格的表名
private String[] rowName;// 導出表格的列名
private List<Object[]> dataList = new ArrayList<Object[]>(); // 對象數組的List集合
private HttpServletResponse response;
// 傳入要導入的數據
public ExportExcelUtils(String title,String[] rowName,List<Object[]> dataList,HttpServletResponse response){
this.title=title;
this.rowName=rowName;
this.dataList=dataList;
this.response = response;
}
// 導出數據
public void exportData(){
try {
HSSFWorkbook workbook =new HSSFWorkbook(); // 創建一個excel對象
HSSFSheet sheet =workbook.createSheet(title); // 創建表格
// 產生表格標題行
HSSFRow rowm =sheet.createRow(0); // 行
HSSFCell cellTiltle =rowm.createCell(0); // 單元格
// sheet樣式定義
HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook); // 頭樣式
HSSFCellStyle style = this.getStyle(workbook); // 單元格樣式
/**
* 參數說明
* 從0開始 第一行 第一列 都是從角標0開始
* 行 列 行列 (0,0,0,5) 合併第一行 第一列 到第一行 第六列
* 起始行，起始列，結束行，結束列
*
* new Region() 這個方法使過時的
*/
// 合併第一行的所有列
sheet.addMergedRegion(new CellRangeAddress(0, (short) 0, 0, (short) (rowName.length-1)));
cellTiltle.setCellStyle(columnTopStyle);
cellTiltle.setCellValue(title);
int columnNum = rowName.length; // 表格列的長度
HSSFRow rowRowName = sheet.createRow(1); // 在第二行創建行
HSSFCellStyle cells =workbook.createCellStyle();
cells.setBottomBorderColor(HSSFColor.BLACK.index);
rowRowName.setRowStyle(cells);
// 循環 將列名放進去
for (int i = 0; i < columnNum; i++) {
HSSFCell cellRowName = rowRowName.createCell((int)i);
cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); // 單元格類型
HSSFRichTextString text = new HSSFRichTextString(rowName[i]); // 得到列的值
cellRowName.setCellValue(text); // 設置列的值
cellRowName.setCellStyle(columnTopStyle); // 樣式
}
// 將查詢到的數據設置到對應的單元格中
for (int i = 0; i < dataList.size(); i++) {
Object[] obj = dataList.get(i);//遍歷每個對象
HSSFRow row = sheet.createRow(i+2);//創建所需的行數
for (int j = 0; j < obj.length; j++) {
HSSFCell cell = null; //設置單元格的數據類型
if(j==0){
// 第一列設置爲序號
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()); //設置單元格的值
}else{
cell.setCellValue(" ");
}
}
cell.setCellStyle(style); // 樣式
}
}
// 讓列寬隨着導出的列長自動適應
sheet.autoSizeColumn((short)0); //調整第一列寬度
sheet.autoSizeColumn((short)1); //調整第二列寬度
sheet.autoSizeColumn((short)2); //調整第三列寬度
sheet.autoSizeColumn((short)3); //調整第四列寬度
sheet.autoSizeColumn((short)4); //調整第五列寬度
sheet.autoSizeColumn((short)5); //調整第六列寬度
if(workbook !=null){
try
{
// excel 表文件名
String fileName = title + ".xls";
String fileName11 = URLEncoder.encode(fileName,"UTF-8");
String fileName12 = java.net.URLDecoder.decode(fileName11, "UTF-8");
String headStr = "attachment; filename=\"" + fileName12 + "\"";
// System.out.println(headStr);
response.setContentType("APPLICATION/OCTET-STREAM");
// response.setHeader("Content-Disposition", headStr);
response.setHeader("Content-Disposition", "attachment;filename=" + new String(fileName12.getBytes("gb2312"), "ISO8859-1" ));
OutputStream out = response.getOutputStream();
workbook.write(out);
out.flush();
out.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}catch(Exception e){
e.printStackTrace();
}
}
public HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) {
// 設置字體
HSSFFont font = workbook.createFont();
//設置字體大小
font.setFontHeightInPoints((short)11);
//字體加粗
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//設置字體名字
font.setFontName("Courier New");
//設置樣式;
HSSFCellStyle style = workbook.createCellStyle();
//設置底邊框;
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
//設置底邊框顏色;
style.setBottomBorderColor(HSSFColor.BLACK.index);
//設置左邊框;
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
//設置左邊框顏色;
style.setLeftBorderColor(HSSFColor.BLACK.index);
//設置右邊框;
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
//設置右邊框顏色;
style.setRightBorderColor(HSSFColor.BLACK.index);
//設置頂邊框;
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
//設置頂邊框顏色;
style.setTopBorderColor(HSSFColor.BLACK.index);
//在樣式用應用設置的字體;
style.setFont(font);
//設置自動換行;
style.setWrapText(false);
//設置水平對齊的樣式爲居中對齊;
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//設置垂直對齊的樣式爲居中對齊;
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
return style;
}
public HSSFCellStyle getStyle(HSSFWorkbook workbook) {
// 設置字體
HSSFFont font = workbook.createFont();
//設置字體大小
//font.setFontHeightInPoints((short)10);
//字體加粗
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//設置字體名字
font.setFontName("Courier New");
//設置樣式;
HSSFCellStyle style = workbook.createCellStyle();
//設置底邊框;
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
//設置底邊框顏色;
style.setBottomBorderColor(HSSFColor.BLACK.index);
//設置左邊框;
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
//設置左邊框顏色;
style.setLeftBorderColor(HSSFColor.BLACK.index);
//設置右邊框;
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
//設置右邊框顏色;
style.setRightBorderColor(HSSFColor.BLACK.index);
//設置頂邊框;
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
//設置頂邊框顏色;
style.setTopBorderColor(HSSFColor.BLACK.index);
//在樣式用應用設置的字體;
style.setFont(font);
//設置自動換行;
style.setWrapText(false);
//設置水平對齊的樣式爲居中對齊;
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//設置垂直對齊的樣式爲居中對齊;
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
return style;
}
public static String dataFormat (Date Date){
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String format = simpleDateFormat.format(new Date());
return format;
}
}
後臺接口：
//設備使用信息導出
@RequestMapping(value="/exportinfo",method = { RequestMethod.GET,RequestMethod.POST})
@ResponseBody
public void exportinfo(HttpServletRequest request,HttpServletResponse response,Long id,Map<String, Object> map)
{
map.put("id",id);
List<DeviceUsageEntity> wordsList = deviceUsageService.queryListdetails(map);
if (wordsList.size() != 0)
{
try
{
String title =wordsList.get(0).getDeviceInfo().getName()+"使用詳情";
String[] rowsName = new String[] {"序號","設備id", "會員暱稱", "使用時長", "開始使用時間", "結束使用時間"};
List<Object[]> dataList = new ArrayList<Object[]>();
Object[] objs = null;
for (int i = 0; i < wordsList.size(); i++)
{
objs = new Object[rowsName.length];
objs[0] = " "+i+ " ";
objs[1] = wordsList.get(i).getDeviceInfo().getUuid();
objs[2] = " "+wordsList.get(i).getDeviceUser().getNickname()+ " ";
objs[3]= wordsList.get(i).getDuration()==null ? " " : " "+wordsList.get(i).getDuration()+"分鐘"+ " " ;
objs[4] = ExportExcelUtils.dataFormat(wordsList.get(i).getStartTime());
objs[5] = ExportExcelUtils.dataFormat(wordsList.get(i).getEndTime());
dataList.add(objs);
}
ExportExcelUtils ex = new ExportExcelUtils(title, rowsName, dataList, response);
ex.exportData();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
效果圖：