package richinfo.attendance.util;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
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.CellRangeAddress;
import org.apache.poi.hssf.util.HSSFColor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import richinfo.tools.common.AssertUtil;
import richinfo.tools.io.StreamUtil;
/**
* 功能描述:
* execl功能工具类
*/
public class ExeclUtil
{
private static Logger log = LoggerFactory.getLogger(ExeclUtil.class);
private static volatile ExeclUtil instance;
/**
* 单例模式
*/
public static ExeclUtil getInstance()
{
if (null == instance)
{
synchronized (ExeclUtil.class)
{
if (null == instance)
{
instance = new ExeclUtil();
return instance;
}
}
}
return instance;
}
/*
* 导出数据
* */
@SuppressWarnings("deprecation")
public void export(String title,String[] rowName, List<Object[]> dataList ,String path, boolean needMerge) {
try{
log.info("exportExecl,title={}|path={}",title,path);
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, 0, 0, (rowName.length-1)));
cellTiltle.setCellStyle(columnTopStyle);
cellTiltle.setCellValue(title);
// 定义所需列数
int columnNum = rowName.length;
HSSFRow rowRowName = sheet.createRow(1); // 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<columnNum;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<dataList.size();i++){
Object[] obj = dataList.get(i);//遍历每个对象
HSSFRow row = sheet.createRow(i+2);//创建所需的行数
for(int j=0; j<obj.length; 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 = 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;
// 根据需求实现,因为需求的第一行是合并的大标题,所以这里列宽自适应从第2行(rowNum = 1)开始
for (int rowNum = 1; 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) {
String cellValue = "";
try
{
cellValue = currentCell.getStringCellValue();
}
catch (Exception e)
{}
if(AssertUtil.isNotEmpty(currentCell) && AssertUtil.isNotEmpty(cellValue)){
// 一个汉字占两位(GBK)来计算,否则汉字多的情况下,空白内容太宽
int length = currentCell.getStringCellValue().trim().getBytes("GBK").length;
if (columnWidth < length) {
columnWidth = length;
}
}
}
}
}
// 设置列宽度值,针对不同的列 做一个宽度度控制处理,+4可以使内容不那么贴近边框
sheet.setColumnWidth(colNum, (columnWidth+4) * 256);
}
if(workbook !=null){
OutputStream out = null;
try
{
if (needMerge && AssertUtil.isNotEmpty(dataList))
{
// 将第一列进行值相同的行单元格合并
addMergedRegion(sheet, 0, 2, sheet.getLastRowNum(),
workbook);
}
// 写文件
out = new FileOutputStream(path);
workbook.write(out);
out.flush();
}
catch (Exception e1)
{
log.error("exportExecl out file failure.", e1);
}
finally
{
StreamUtil.close(out);
}
}
}catch(Exception e){
log.error("exportExecl failure.",e);
}
}
/**
* 合并单元格
* @param sheet 要合并单元格的excel 的sheet工作表对象
* @param cellLine 要合并的列
* @param startRow 要合并列的开始行
* @param endRow 要合并列的结束行
* @param workBook excel整体工作薄对象
*/
private static void addMergedRegion(HSSFSheet sheet, int cellLine,
int startRow, int endRow, HSSFWorkbook workBook)
{
HSSFCellStyle style = workBook.createCellStyle(); // 样式对象
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中
//设置左边框;
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
//设置左边框颜色;
style.setLeftBorderColor(HSSFColor.BLACK.index);
// 获取第一行的数据,以便后面进行比较
String s_will = sheet.getRow(startRow).getCell(cellLine)
.getStringCellValue();
// 上下两列数据是否比对成功标识
boolean flag = false;
// 比对成功计数
int count = 0;
for (int i = 1; i <= endRow; i++)
{
String s_current = "";
// 兼容一下获取不到列数据值的情况(比如单元格是被合并过的情况)
if (sheet.getRow(i).getCell(0) != null)
{
s_current = sheet.getRow(i).getCell(0).getStringCellValue();
}
if (s_will.equals(s_current))
{
flag = true;
count ++;
}
else
{
if(flag){
// 合并参数: 首行----当前的行减去要合并的行数
// 最后一行----当前行数减去1,因为当前行与上一行不匹配才合并
// 首列、最后一列 单列合并,所以这里两个值都是一样的
sheet.addMergedRegion(new CellRangeAddress(startRow-count,
i-1, cellLine, cellLine));
HSSFRow row = sheet.getRow(startRow-count);
String cellValueTemp = sheet.getRow(startRow-count)
.getCell(0).getStringCellValue();
HSSFCell cell = row.createCell(0);
cell.setCellValue(cellValueTemp); // 跨单元格显示的数据
cell.setCellStyle(style); // 样式 主要为了设置合并后居中
count = 0;
flag = false;
}
}
s_will = s_current;
startRow = i;
// 由于上面循环中合并的单元放在有下一次不相同单元格的时候做的,
// 所以最后如果几行有相同单元格则要运行下面的合并单元格。
if (i == endRow && flag)
{
sheet.addMergedRegion(new CellRangeAddress(endRow - count,
endRow, cellLine, cellLine));
String cellValueTemp = sheet.getRow(endRow - count).getCell(0)
.getStringCellValue();
HSSFRow row = sheet.getRow(endRow - count);
HSSFCell cell = row.createCell(0);
cell.setCellValue(cellValueTemp); // 跨单元格显示的数据
cell.setCellStyle(style); // 样式 主要为了设置合并后居中
}
}
}
/*
* 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);
//设置背景颜色
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setFillForegroundColor(HSSFColor.YELLOW.index);
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;
}
public static void main(String[] args)
{
String title = "测试宝宝";
String[] rowsName = new String[]{"序号","货物运输批次号","提运单号","状态","录入人","录入时间"};
List<Object[]> dataList = new ArrayList<Object[]>();
Object [] objs = null;
objs = new String[rowsName.length];
objs[0] = "是因为呼呼Y鱼鱼回就怎么回还好还好哈";
objs[1] = "123";
objs[2] = "456";
objs[3] = "哈哈哈哈";
objs[4] = "呵呵和呵呵";
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String date = df.format(new Date());
objs[5] = date;
dataList.add(objs);
objs = new String[rowsName.length];
objs[0] = "是因为呼呼Y鱼鱼回就怎么回还好还好哈";
objs[1] = "1233";
objs[2] = "4564";
objs[3] = "哈哈哈哈12";
objs[4] = "呵呵和呵12";
SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date = df2.format(new Date());
objs[5] = date;
dataList.add(objs);
objs = new String[rowsName.length];
objs[0] = "8";
objs[1] = "123323";
objs[2] = "4564121";
objs[3] = "哈哈哈哈1122";
objs[4] = "呵呵和呵1212";
SimpleDateFormat df3 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date = df3.format(new Date());
objs[5] = date;
dataList.add(objs);
objs = new String[rowsName.length];
objs[0] = "6";
objs[1] = "323323";
objs[2] = "464121";
objs[3] = "5哈哈哈1122";
objs[4] = "5呵和呵1212";
SimpleDateFormat df4 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date = df4.format(new Date());
objs[5] = date;
dataList.add(objs);
objs = new String[rowsName.length];
objs[0] = "6";
objs[1] = "3323323";
objs[2] = "23464121";
objs[3] = "6哈哈哈1122";
objs[4] = "6呵和呵1212";
SimpleDateFormat df5 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date = df5.format(new Date());
objs[5] = date;
dataList.add(objs);
objs = new String[rowsName.length];
objs[0] = "7";
objs[1] = "3323323";
objs[2] = "23464121";
objs[3] = "6哈哈哈1122";
objs[4] = "6呵和呵1212";
SimpleDateFormat df6 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date = df6.format(new Date());
objs[5] = date;
dataList.add(objs);
ExeclUtil util = new ExeclUtil();
String fileName = "您好-" + String.valueOf(System.currentTimeMillis()).substring(4, 13) + ".xls";
String path = "D:\\temp\\" + fileName;
util.export(title, rowsName, dataList,path,true);
}
}
原文地址:https://www.cnblogs.com/zhuziyu/p/9167132.html