java实现数据的Excel导出（合并单元格、样式等）
作者：互联网
直接上代码吧
/**
*
*/
package zhongdian.whh.commonclass;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
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.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.hssf.util.Region;
/**数据导出Excel
* 2018/9/10
* @author
*
*/
public class DataToExcel {
private DataToExcel(){}
/**
* 导出Excel
* @param response 你懂的
* @param excelFile Excel文件
* @param fileName 导出的文件名
*/
public static void export(HttpServletResponse response , HSSFWorkbook excelFile , String fileName) {
//写入excel表
response.reset();
response.setContentType( "application/octet-stream;charset=GBK" );
response.setCharacterEncoding("GBK");
response.setHeader( "Content-Disposition", "attachment;filename=" + processExcelFilename(fileName) + ".xls" );
try {
excelFile.write(response.getOutputStream( ));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/**
* 导出Excel
* @param response 你懂的
* @param fileName 导出的文件名
* @param columnWidth 列宽
* @param rowName 表头
* @param dataList 数据以List<List<String>>组织
*/
public static void export(HttpServletResponse response , String fileName , int columnWidth ,
String sheetName , String[] rowName, List<List<String>> dataList){
HSSFWorkbook excelFile = null;
try {
excelFile = toExcel(excelFile, sheetName, columnWidth, rowName, dataList);
} catch (IOException e) {
throw new RuntimeException(e);
}
export(response, excelFile, fileName);
}
/**
* 堆叠转换成Excel文件
* @param excelFile 堆叠Excel文件，传null则新建
* @param table Table
* @param sheetName SheetName
* @param columnWidth 列宽
* @return 堆叠后的Excel文件
* @throws IOException
*/
public static HSSFWorkbook toExcel(HSSFWorkbook excelFile, String sheetName , int columnWidth
, String[] rowName, List<List<String>> dataList) throws IOException{
// 声明一个工作薄
if (excelFile == null){
excelFile = new HSSFWorkbook();
}
// 生成标题样式
@SuppressWarnings("unused")
HSSFCellStyle titleStyle = getTitleStyle( excelFile );
// 生成标题行样式
@SuppressWarnings("unused")
HSSFCellStyle titleRowStyle = getRowTitleStyle( excelFile );
// 生成数据样式
HSSFCellStyle cellRowStyle = getCellStyle( excelFile );
//高亮格式
HSSFCellStyle styleLight = styleLight(excelFile);
int sheetNum = (int)dataList.size()/60000;
if(dataList.size()%60000!=0){
sheetNum++;
}
/**合并单元格的例子
//表头样式设置
HSSFRow row0 = sheet.createRow(0);
createMyCells(0,19,row0,titleRowStyle);
sheet.addMergedRegion(getMyRegion(0, 2, 0, 0));
addMyTitle(row0, 0, "跟进人名称");
sheet.addMergedRegion(getMyRegion(0, 2, 1, 1));
addMyTitle(row0, 1, "名义欠款金额合计");
sheet.addMergedRegion(getMyRegion(0, 0, 2, 7));
addMyTitle(row0, 2, "超期欠款");
sheet.addMergedRegion(getMyRegion(0, 0, 8, 13));
addMyTitle(row0, 8, "超期合同数量");
sheet.addMergedRegion(getMyRegion(0, 0, 14, 18));
addMyTitle(row0, 14, "超期欠款合同数量");
HSSFRow row1 = sheet.createRow(1);
createMyCells(0,19,row1,titleRowStyle);
sheet.addMergedRegion(getMyRegion(1, 2, 2, 2));
addMyTitle(row1, 2, "超期欠款金额合计");
sheet.addMergedRegion(getMyRegion(1, 1, 3, 7));
addMyTitle(row1, 3, "超期时间/月");
sheet.addMergedRegion(getMyRegion(1, 2, 8, 8));
addMyTitle(row1, 8, "超期合同数量合计");
sheet.addMergedRegion(getMyRegion(1, 1, 9, 13));
addMyTitle(row1, 9, "超期时间/月");
sheet.addMergedRegion(getMyRegion(1, 2, 14, 14));
addMyTitle(row1, 14, "1万以下");
sheet.addMergedRegion(getMyRegion(1, 2, 15, 15));
addMyTitle(row1, 15, "1万至5万");
sheet.addMergedRegion(getMyRegion(1, 2, 16, 16));
addMyTitle(row1, 16, "5万至10万");
sheet.addMergedRegion(getMyRegion(1, 2, 17, 17));
addMyTitle(row1, 17, "10万至30万");
sheet.addMergedRegion(getMyRegion(1, 2, 18, 18));
addMyTitle(row1, 18, "30万以上");
*/
for(int k = 0; k < sheetNum; k++){
//创建一个sheet
HSSFSheet sheet = excelFile.createSheet();
excelFile.setSheetName(excelFile.getNumberOfSheets() - 1, sheetName+k+"",(short)1);
sheet.setDefaultColumnWidth((short) (columnWidth));
//Build Excel
if(rowName!=null && rowName.length>0) {
//设置表头
int columnNum = rowName.length;
HSSFRow rowRowName = sheet.createRow(0); // 在索引0的位置创建行
// 将列头设置到sheet的单元格中
for(int n=0;n<columnNum;n++){
HSSFCell cellRowName = rowRowName.createCell((short)n);//创建列头对应个数的单元格
cellRowName.setEncoding( HSSFCell.ENCODING_UTF_16 );
cellRowName.setCellType( HSSFCell.CELL_TYPE_STRING );
cellRowName.setCellValue(rowName[n]);//设置列头单元格的值
cellRowName.setCellStyle(titleRowStyle);
}
}
int rowIndex = 1;
for(int index = k * 60000; index < dataList.size(); index++){
List<String> dl = dataList.get(index);
HSSFRow row = sheet.createRow(rowIndex);
HSSFCellStyle cellstyle = cellRowStyle;
if(rowIndex%2==1){
cellstyle = styleLight;
}
for(int i = 0; i < dl.size(); i++) {
addCell_whh(row, cellstyle, dl.get(i), i);
}
rowIndex++;
}
}
return excelFile;
}
private static Region getMyRegion(int rf,int rt,int cf,int ct){
Region region = new Region();
region.setRowFrom(rf);
region.setRowTo(rt);
region.setColumnFrom((short) cf);
region.setColumnTo((short) ct);
return region;
}
private static void createMyCells(int from,int to,HSSFRow rowRowName, HSSFCellStyle titleRowStyle){
for(int i = from; i < to; i++){
HSSFCell cellRowName = rowRowName.createCell((short)i);
cellRowName.setEncoding( HSSFCell.ENCODING_UTF_16 );
cellRowName.setCellType( HSSFCell.CELL_TYPE_STRING );
cellRowName.setCellStyle(titleRowStyle);
}
}
public static void addCell_whh(HSSFRow row, HSSFCellStyle cellstyle, String text, int n){
HSSFCell cell = row.createCell((short)n);
cell.setCellStyle(cellstyle);
cell.setEncoding( HSSFCell.ENCODING_UTF_16 );
cell.setCellType( HSSFCell.CELL_TYPE_STRING );
cell.setCellValue(text);
}
/**
* 生成标题样式
* @param workbook
* @return
*/
public static HSSFCellStyle getTitleStyle(HSSFWorkbook workbook){
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.LIGHT_ORANGE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setBottomBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setRightBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setLeftBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setTopBorderColor(HSSFColor.GREY_50_PERCENT.index);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setColor(HSSFColor.VIOLET.index);
font.setFontHeightInPoints((short) 12);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
/**
* 生成行标题样式
* @param workbook
* @return
*/
public static HSSFCellStyle getRowTitleStyle(HSSFWorkbook workbook){
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.LIGHT_ORANGE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setBottomBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setRightBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setLeftBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setTopBorderColor(HSSFColor.GREY_50_PERCENT.index);
// 生成一个字体
HSSFFont font = workbook.createFont();
// font.setColor(HSSFColor.VIOLET.index);
font.setFontHeightInPoints((short) 10);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
/**
* 生成数据样式
* @param workbook
* @return
*/
public static HSSFCellStyle getCellStyle(HSSFWorkbook workbook){
HSSFCellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(HSSFColor.WHITE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
style.setBottomBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setRightBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setLeftBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setTopBorderColor(HSSFColor.GREY_50_PERCENT.index);
// 生成另一个字体
HSSFFont font = workbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
/**
* 高亮格式
* @param workbook
* @return
*/
public static HSSFCellStyle styleLight(HSSFWorkbook workbook){
HSSFCellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(HSSFColor.PALE_BLUE.index);
//HSSFColor.SKY_BLUE;
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
style.setBottomBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setRightBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setLeftBorderColor(HSSFColor.GREY_50_PERCENT.index);
style.setTopBorderColor(HSSFColor.GREY_50_PERCENT.index);
// 生成另一个字体
HSSFFont font = workbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
/**
* 预处理导出文件名
* @param str
* @return
*/
public static String processExcelFilename(String str){
try {
return java.net.URLEncoder.encode(str, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return "No Name";
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO 自动生成的方法存根
List<List<String>> dataList = new ArrayList<List<String>>();
System.out.println((int)100/6000);
}
}
标签：index,style,java,单元格,Excel,excelFile,HSSFColor,HSSFCellStyle,sheet 来源： https://www.cnblogs.com/interesting-whh/p/11096930.html