Spring 使用POI導出Excel並生成下拉選項

在開發中我們經常會用到生成excel，下面是spring項目前後端分離導出excel工具類，接口中直接引用即可。

首先引入poi-jar包：

		<dependency>
		    <groupId>org.apache.poi</groupId>
		    <artifactId>poi</artifactId>
		    <version>3.14</version>
		</dependency>
		<dependency>
		    <groupId>org.apache.poi</groupId>
		    <artifactId>poi-ooxml</artifactId>
		    <version>3.14</version>
		</dependency>

ExcelPoiUtil：

import java.util.List;

import org.apache.poi.hssf.usermodel.DVConstraint;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataValidation;
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.ss.usermodel.IndexedColors;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellRangeAddressList;

public class ExcelPoiUtil {

	/**
	 * 
	 * @param fileName 文件名稱
	 * @param sheetName sheet頁名稱
	 * @param titleList 列名
	 * @param titleCodeList 列名對應的code
	 * @param parpamtsList 可選擇參數列(需與列名一比一)
	 */
	public static HSSFWorkbook createExcel(String fileName,String sheetName,List<String> titleList,List<String> titleCodeList,List<List<String>> parpamtsList) {
		 HSSFWorkbook wb = new HSSFWorkbook();
		 
		 HSSFSheet sheet = setSheetBaseInfoExcel(sheetName,36,30,wb);
		 
		 //設置前三行凍結
	     sheet.createFreezePane(0,3,0,3);
	     //此處是設置 第一行 合併單元格的個數(標題行)
	     sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, (titleList.size()-1)));
	     
	     // 產生表格標題行
	    HSSFRow rowm = sheet.createRow(0);
	    HSSFCell cellTiltle = rowm.createCell(0);
	    HSSFCellStyle columnTopStyle = getColumnTopStyle(wb);//獲取列頭樣式對象
	    cellTiltle.setCellStyle(columnTopStyle);
	    cellTiltle.setCellValue(sheetName);
	    rowm.setHeightInPoints(25);
	    
	    //隱藏第二行，並填寫code值
	    HSSFRow row_titleCode = sheet.createRow(1);
	    for(int i=0;i<titleCodeList.size();i++) {
	    	HSSFCell cellTiltleCode = row_titleCode.createCell(i);
	    	cellTiltleCode.setCellValue(titleCodeList.get(i));
	    }
	    row_titleCode.setZeroHeight(true);
	    
	    //設置第三行標題 標題列
	    HSSFRow row_titleName = sheet.createRow(2);
	    HSSFCellStyle style = getStyle(wb);
        for (int i=0;i<titleList.size();i++){
            HSSFCell cell_titleName = row_titleName.createCell(i);
            cell_titleName.setCellValue(titleList.get(i));
            cell_titleName.setCellStyle(style);
        }
        
        //設置默認下拉內容
        if(parpamtsList!=null && parpamtsList.size()>0) {
        	for(int i=0;i<parpamtsList.size();i++) {
        		if(parpamtsList.get(i)==null || parpamtsList.get(i).size()<1) {
        			continue;
        		}
        		//設置下拉控制的範圍
        		CellRangeAddressList regions = new CellRangeAddressList(3, 999, i, i);
        		// 生成下拉框內容
        		String[] strings = new String[parpamtsList.get(i).size()];
        		parpamtsList.get(i).toArray(strings);
        		DVConstraint constraint = DVConstraint.createExplicitListConstraint(strings);
        		// 綁定下拉框和作用區域
        		HSSFDataValidation data_validation = new HSSFDataValidation(regions, constraint);
        		// 對sheet頁生效
        		sheet.addValidationData(data_validation);
        	}
        }
        
        return wb;
	    
	}
	
	 /**設計excel定義列數、列寬和標頭信息*/
    private static HSSFSheet setSheetBaseInfoExcel(String excelName,int columWith,int rowHight,HSSFWorkbook wb){
        HSSFSheet sheet = wb.createSheet(excelName);
        sheet.setDefaultColumnWidth(columWith);
        sheet.setDefaultRowHeightInPoints(rowHight);
//        String columWiths[] =  columWithMsg.split(",");
//        for (int i=0;i<columWiths.length;i++){
//            sheet.setColumnWidth(i,Integer.valueOf(columWiths[i])*512);
//        }
        return sheet;
    }
    
    /*
     * 列表首頁的大title樣式
     */
    private static HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) {

        // 設置字體
        HSSFFont font = workbook.createFont();
        //設置字體大小
        font.setFontHeightInPoints((short)16);
        //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);
        //設置背景顏色
//        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        style.setFillForegroundColor(IndexedColors.PALE_BLUE.getIndex());
        return style;
    }
    
    /*
     * 標題 列的樣式
     */
    private static HSSFCellStyle getStyle(HSSFWorkbook workbook) {
        // 設置字體
        HSSFFont font = workbook.createFont();
        //設置字體大小
        font.setFontHeightInPoints((short)12);
        //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);
        //設置背景顏色
//        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex());
        return style;
    }
}