java 匯出到EXCEL

fhadmin 發表於 2022-01-12
Java Excel
 
package org.fh.util;
import java.util.Date;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
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.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.usermodel.Workbook;
import org.fh.entity.PageData;
import org.springframework.web.servlet.view.document.AbstractXlsView;
/**
 * 說明:匯出到EXCEL
 * 作者:FH Admin
 * from:fhadmin.cn
 */
public class ObjectExcelView extends AbstractXlsView{
	
	@Override
	protected void buildExcelDocument(Map<String, Object> model,
			Workbook workbook, HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		// TODO Auto-generated method stub
		Date date = new Date();
		String filename = DateUtil.date2Str(date, "yyyyMMddHHmmss");
		HSSFSheet sheet;
		response.setContentType("application/octet-stream");
		response.setHeader("Content-Disposition", "attachment;filename="+filename+".xls");
		
		HSSFWorkbook book = (HSSFWorkbook) workbook;
		sheet = book.createSheet("sheet1");
		
		List<String> titles = (List<String>) model.get("titles");
		int len = titles.size();
		HSSFCellStyle headerStyle = book.createCellStyle(); //標題樣式
		headerStyle.setAlignment(HorizontalAlignment.CENTER);
		headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
		HSSFFont headerFont = book.createFont();			//標題字型
		headerFont.setBold(true);
		headerFont.setFontHeightInPoints((short)11);
		headerStyle.setFont(headerFont);
		short height=25*20;
		HSSFRow row = sheet.createRow(0);
		for(int i=0; i<len; i++){ //設定標題
			String title = titles.get(i);
			row.setRowStyle(headerStyle);
			row.createCell(i).setCellValue(title);  
		}
		sheet.getRow(0).setHeight(height);
		
		HSSFCellStyle contentStyle = book.createCellStyle(); //內容樣式
		contentStyle.setAlignment(HorizontalAlignment.CENTER);
		List<PageData> varList = (List<PageData>) model.get("varList");
		int varCount = varList.size();
		for(int i=0; i<varCount; i++){
			PageData vpd = varList.get(i);
			HSSFRow rows = sheet.createRow(i+1); 
			for(int j=0;j<len;j++){
				String varstr = vpd.getString("var"+(j+1)) != null ? vpd.getString("var"+(j+1)) : "";
				rows.setRowStyle(contentStyle);
				rows.createCell(j).setCellValue(varstr);
			}
			
		}
		
	}
}


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/31558068/viewspace-2851923/,如需轉載,請註明出處,否則將追究法律責任。