ssm框架使用poi实现数据导出到excel,并弹框下载

数据的导出是我们很常见的一个功能,实现起来也不复杂

我们先把poi的jar包导入,在pom.xml里

<dependency>
  		<groupId>org.apache.poi</groupId>
  		<artifactId>poi</artifactId>
  		<version>3.13</version>
  	</dependency>
然后我们把要导出的实体类写出来

public class ExcelBins {
	private String binsId;
	private String ording;
	private String phone;
	private String message;
	private String money;
	
	public ExcelBins(){}

	public ExcelBins(String binsId, String ording, String phone, String message, String money) {
		super();
		this.binsId = binsId;
		this.ording = ording;
		this.phone = phone;
		this.message = message;
		this.money = money;
	}

	public String getBinsId() {
		return binsId;
	}

	public void setBinsId(String binsId) {
		this.binsId = binsId;
	}

	public String getOrding() {
		return ording;
	}

	public void setOrding(String ording) {
		this.ording = ording;
	}

	public String getPhone() {
		return phone;
	}

	public void setPhone(String phone) {
		this.phone = phone;
	}

	public String getMessage() {
		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}

	public String getMoney() {
		return money;
	}

	public void setMoney(String money) {
		this.money = money;
	}

	@Override
	public String toString() {
		return binsId + "," + ording + "," + phone + "," + message+ "," + money ;
	}
}

然后把导出的excel工具类写好

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JOptionPane;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFComment;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
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 com.yunyunsport.entity.ExcelOrder;

/**
 * 利用开源组件POI3.0.2动态导出EXCEL文档 转载时请保留以下信息,注明出处!
 * 
 * @author leno
 * @version v1.0
 * @param <T>
 *            应用泛型,代表任意一个符合javabean风格的类
 *            注意这里为了简单起见,boolean型的属性xxx的get器方式为getXxx(),而不是isXxx()
 *            byte[]表jpg格式的图片数据
 */
public class ExportExcel<T> {
	public void exportExcel(Collection<T> dataset, OutputStream out) {
		exportExcel("测试POI导出EXCEL文档", null, dataset, out, "yyyy-MM-dd");
	}

	public void exportExcel(String[] headers, Collection<T> dataset,
			OutputStream out) {
		exportExcel("测试POI导出EXCEL文档", headers, dataset, out, "yyyy-MM-dd");
	}

	public void exportExcel(String[] headers, Collection<T> dataset,
			OutputStream out, String pattern) {
		exportExcel("测试POI导出EXCEL文档", headers, dataset, out, pattern);
	}

	/**
	 * 这是一个通用的方法,利用了JAVA的反射机制,可以将放置在JAVA集合中并且符号一定条件的数据以EXCEL 的形式输出到指定IO设备上
	 * 
	 * @param title
	 *            表格标题名
	 * @param headers
	 *            表格属性列名数组
	 * @param dataset
	 *            需要显示的数据集合,集合中一定要放置符合javabean风格的类的对象。此方法支持的
	 *            javabean属性的数据类型有基本数据类型及String,Date,byte[](图片数据)
	 * @param out
	 *            与输出设备关联的流对象,可以将EXCEL文档导出到本地文件或者网络中
	 * @param pattern
	 *            如果有时间数据,设定输出格式。默认为"yyy-MM-dd"
	 */
	@SuppressWarnings("unchecked")
	public void exportExcel(String title, String[] headers,
			Collection<T> dataset, OutputStream out, String pattern) {
		// 声明一个工作薄
		HSSFWorkbook workbook = new HSSFWorkbook();
		// 生成一个表格
		HSSFSheet sheet = workbook.createSheet(title);
		// 设置表格默认列宽度为15个字节
		sheet.setDefaultColumnWidth((short) 15);
		// 生成一个样式
		HSSFCellStyle style = workbook.createCellStyle();
		// 设置这些样式
		style.setFillForegroundColor(HSSFColor.SKY_BLUE.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);
		// 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);
		// 生成并设置另一个样式
		HSSFCellStyle style2 = workbook.createCellStyle();
		style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
		style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
		style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
		style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
		style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
		style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
		style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
		style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
		// 生成另一个字体
		HSSFFont font2 = workbook.createFont();
		font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
		// 把字体应用到当前的样式
		style2.setFont(font2);
		// 声明一个画图的顶级管理器
		HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
		// 定义注释的大小和位置,详见文档
		HSSFComment comment = patriarch.createComment(new HSSFClientAnchor(0,
				0, 0, 0, (short) 4, 2, (short) 6, 5));
		// 设置注释内容
		comment.setString(new HSSFRichTextString("可以在POI中添加注释!"));
		// 设置注释作者,当鼠标移动到单元格上是可以在状态栏中看到该内容.
		comment.setAuthor("leno");
		// 产生表格标题行
		HSSFRow row = sheet.createRow(0);
		for (short i = 0; i < headers.length; i++) {
			HSSFCell cell = row.createCell(i);
			cell.setCellStyle(style);
			HSSFRichTextString text = new HSSFRichTextString(headers[i]);
			cell.setCellValue(text);
		}
		// 遍历集合数据,产生数据行
		Iterator<T> it = dataset.iterator();
		int index = 0;
		while (it.hasNext()) {
			index++;
			row = sheet.createRow(index);
			T t = (T) it.next();
			// 利用反射,根据javabean属性的先后顺序,动态调用getXxx()方法得到属性值
			Field[] fields = t.getClass().getDeclaredFields();
			for (short i = 0; i < fields.length; i++) {
				HSSFCell cell = row.createCell(i);
				cell.setCellStyle(style2);
				Field field = fields[i];
				String fieldName = field.getName();
				String getMethodName = "get"
						+ fieldName.substring(0, 1).toUpperCase()
						+ fieldName.substring(1);
				try {
					Class tCls = t.getClass();
					Method getMethod = tCls.getMethod(getMethodName,
							new Class[] {});
					Object value = getMethod.invoke(t, new Object[] {});
					// 判断值的类型后进行强制类型转换
					String textValue = null;
					// if (value instanceof Integer) {
					// int intValue = (Integer) value;
					// cell.setCellValue(intValue);
					// } else if (value instanceof Float) {
					// float fValue = (Float) value;
					// textValue = new HSSFRichTextString(
					// String.valueOf(fValue));
					// cell.setCellValue(textValue);
					// } else if (value instanceof Double) {
					// double dValue = (Double) value;
					// textValue = new HSSFRichTextString(
					// String.valueOf(dValue));
					// cell.setCellValue(textValue);
					// } else if (value instanceof Long) {
					// long longValue = (Long) value;
					// cell.setCellValue(longValue);
					// }
					if (value instanceof Boolean) {
						boolean bValue = (Boolean) value;
						textValue = "男";
						if (!bValue) {
							textValue = "女";
						}
					} else if (value instanceof Date) {
						Date date = (Date) value;
						SimpleDateFormat sdf = new SimpleDateFormat(pattern);
						textValue = sdf.format(date);
					} else if (value instanceof byte[]) {
						// 有图片时,设置行高为60px;
						row.setHeightInPoints(60);
						// 设置图片所在列宽度为80px,注意这里单位的一个换算
						sheet.setColumnWidth(i, (short) (35.7 * 80));
						// sheet.autoSizeColumn(i);
						byte[] bsValue = (byte[]) value;
						HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0,
								1023, 255, (short) 6, index, (short) 6, index);
						anchor.setAnchorType(2);
						patriarch.createPicture(anchor, workbook.addPicture(
								bsValue, HSSFWorkbook.PICTURE_TYPE_JPEG));
					} else {
						// 其它数据类型都当作字符串简单处理
						textValue = value.toString();
					}
					// 如果不是图片数据,就利用正则表达式判断textValue是否全部由数字组成
					if (textValue != null) {
						Pattern p = Pattern.compile("^//d+(//.//d+)?$");
						Matcher matcher = p.matcher(textValue);
						if (matcher.matches()) {
							// 是数字当作double处理
							cell.setCellValue(Double.parseDouble(textValue));
						} else {
							HSSFRichTextString richString = new HSSFRichTextString(
									textValue);
							HSSFFont font3 = workbook.createFont();
							font3.setColor(HSSFColor.BLUE.index);
							richString.applyFont(font3);
							cell.setCellValue(richString);
						}
					}
				} catch (SecurityException e) {
					e.printStackTrace();
				} catch (NoSuchMethodException e) {
					e.printStackTrace();
				} catch (IllegalArgumentException e) {
					e.printStackTrace();
				} catch (IllegalAccessException e) {
					e.printStackTrace();
				} catch (InvocationTargetException e) {
					e.printStackTrace();
				} finally {
					// 清理资源
				}
			}
		}
		try {
			workbook.write(out);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
 


}

然后在Controller里面绑定数据

	@RequestMapping(value = "download_customer.do")
	@ResponseBody
	public JsonResult<String> rechargeExcel(HttpServletRequest request, HttpServletResponse response, String gym_id,String type) {
		try {
			if (type.equals("orders")) {
				List<Map<String, Object>> res = orderService.allOrderInfo(gym_id);
				List<ExcelBins> binsList = new ArrayList<ExcelBins>();
				if(res.size()==0){
					return new JsonResult<String>(1, "暂无数据!", "");
				}else{
					for (Map<String, Object> map2 : res) {
						String str1 = map2.values() + "";
						String res1[] = str1.split(",");
						ExcelBins excelBins = new ExcelBins();
						excelBins.setBinsId(res1[3].replace("[[", ""));
						excelBins.setMoney(res1[1].replace("[", ""));
						excelBins.setPhone(res1[2].replace("[", ""));
						String message = res1[4].replace("]", "");
						String message1 = message.substring(0, message.length()-3)+":00";
						String message2 = message1.replace("_", ":00 - ");
						String message3 = message2.replaceAll("h", "");
						excelBins.setMessage(message3.replaceAll("\\+", " "));
						String ording = res1[0].replace("[", "");
						excelBins.setOrding(ording.replace(".0", ""));
						binsList.add(excelBins);
					}
					ExportExcel<ExcelBins> ex = new ExportExcel<ExcelBins>();
					String headers[] = { "订单号", "下单时间", "预留手机", "场次信息", "金额" };
					String filepath="/home/wycg/tomcat/excel/"+gym_id+type+".xls"; 
//					
					File file = new File(filepath);
					if (!file.getParentFile().exists()) {
						file.getParentFile().mkdirs();
					}
					try {
						file.createNewFile();
					} catch (IOException e) {
						e.printStackTrace();
					}
					OutputStream out = new FileOutputStream(file);
					ex.exportExcel("订单详情", headers, binsList, out, "yyyy-MM-dd");
					out.close();
					return new JsonResult<String>(0, "", "https://sport.com/excel/"+gym_id+type+".xls");

				}
			} else {
				List<Map<String, Object>> res = fieldService.exportOrderHistory(gym_id);
				List<ExcelOrder> list1 = new ArrayList<ExcelOrder>();
				if(res.size()==0){
					return new JsonResult<String>(1, "暂无账单!", "");
				}else{
					for (Map<String, Object> map2 : res) {
						String str1 = map2.values() + "";
						String res1[] = str1.split(",");
						ExcelOrder excelOrder = new ExcelOrder();
						excelOrder.setDate(res1[0].replace("[", ""));
						excelOrder.setReservegym(res1[1]);
						excelOrder.setTotal(res1[2].replace("]", ""));
						list1.add(excelOrder);
					}
					try {
						ExportExcel<ExcelOrder> ex = new ExportExcel<ExcelOrder>();
						String headers[] = { "日期", "预定场次(次)", "销售总额(元)" };
						String filepath="/home/tomcat/webapps/excel/"+gym_id+type+".xls"; 
//						
						File file = new File(filepath);
						if (!file.getParentFile().exists()) {
							file.getParentFile().mkdirs();
						}
						try {
							file.createNewFile();
						} catch (IOException e) {
							e.printStackTrace();
						}
						OutputStream out = new FileOutputStream(file);
						ex.exportExcel(headers, list1, out);
						out.close();
					} catch (Exception e) {
						e.printStackTrace();
					}
					return new JsonResult<String>(0, "", "https://sport.com/excel/"+gym_id+type+".xls");
//					
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		 return new JsonResult<String>(0, "", "https://sport.com/excel/"+gym_id+type+".xls");
//		
	}
		



我们先是将文件下载到服务器,然后客户端下载服务器上的文件,所以我们的存放路径,需要是项目在tomcat部署下的存放路径,需要在网络上能访问得到的,所以这里需要小心一点,然后其他的就可以直接复制了

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转载自blog.csdn.net/qiuqiu_qiuqiu123/article/details/71552486