【Excel】POI导出EXCEL文档、水平垂直居中、表头添加颜色

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 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 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 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 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;
	}
	
}