POI导出EXCEL文档，表格水平垂直居中、表头添加颜色等常用属性方法

package utils;
 
import ggframework.bottom.log.GGLogger;
 
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
 
import org.apache.commons.lang3.StringUtils;
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.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.util.CellRangeAddress;
 
 
public class ExcelUtil {
 
    public static File getSimpolDataExcel(List<Map<String, Object>> data, String name) {
        //创建Excel工作簿对象，对应一个Excel文件
        HSSFWorkbook book = new HSSFWorkbook();
        //创建Excel工作表对象
        HSSFSheet sheet = book.createSheet(name);
        sheet.setVerticallyCenter(true);
        int index = 0;
        
      //创建单元格，并设置值表头 设置表头居中
        HSSFCellStyle styleMain = book.createCellStyle();
        //水平居中
        styleMain.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        //垂直居中
        styleMain.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        
        for (Map<String, Object> map : data) {
            int cellNum = 0;
            //创建Excel工作表行
            HSSFRow row = sheet.createRow(index);
            //设置行高 单位像素
            row.setHeight((short)400);
            //创建单元格，并设置值表头 设置表头居中
            HSSFCellStyle styleTitle = book.createCellStyle();
            //水平居中
            styleTitle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
            //垂直居中
            styleTitle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
            //设置背景色
            styleTitle.setFillForegroundColor(IndexedColors.TEAL.getIndex());
            styleTitle.setFillPattern(CellStyle.SOLID_FOREGROUND);
            
            styleTitle.setBorderBottom(HSSFCellStyle.BORDER_THIN);
            styleTitle.setBorderLeft(HSSFCellStyle.BORDER_THIN);
            styleTitle.setBorderRight(HSSFCellStyle.BORDER_THIN);
            styleTitle.setBorderTop(HSSFCellStyle.BORDER_THIN);
            if(index==0){
                int i=0;
                for(Map.Entry<String, Object> entry: map.entrySet()) {
                 //设置列的宽度 单位像素
                 sheet.setColumnWidth(i++, 6000);
                 //创建Excel单元格
                    HSSFCell cell = row.createCell(cellNum);
                    //设置Excel单元格值
                    cell.setCellValue(entry.getKey()==null?"--":entry.getKey().toString());
                    cell.setCellStyle(styleTitle);
                    cellNum++;
               }    
            }else{
                
                for(Map.Entry<String, Object> entry: map.entrySet()) {
                     HSSFCell cell = row.createCell(cellNum);
                     cell.setCellValue(entry.getValue()==null?"--":entry.getValue().toString());
                     cell.setCellStyle(styleMain);
                     cellNum++;
                }
               }
            index++;
        }
        //设置生成的文件临时存放目录
        File dir = new File("temp/userfb");
        if (!dir.exists()) {
            dir.mkdirs();
        }
        String fileName =("temp/userfb") + File.separator + name + ".xls"; 
        File file = new File(fileName);
        try {
            FileOutputStream fos = new FileOutputStream(file);
            book.write(fos);
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
 
       return file;
    }
    
}

标签：poi,POI,EXCEL,表头,HSSFCellStyle,org,apache,import,styleTitle
来源： https://www.cnblogs.com/qianxiaoPro/p/14657290.html