基础POI的ExportExcelUtils工具类的Excel表格导出十分方便
一个controller的完整的流程：
1 new一个输出流
2 构造属性列与头部的对应关系
3 拿到list集合用ExportExcelUtils.createWorkbook 方法返回workbook对象；
4 setRoponseHead设置返回头部，与文件名；
5 关闭流
对应的代码方法：如下
OutputStream out= response.getOutputStream();
String[] field= {"orderNo","createTime","username","tel","orderStatus","payAmount","totalIntegral","remark"};
String[] heads={"订单号" ,"下单时间" ,"下单人", "联系电话","订单状态","订单总金额", "订单积分","备注"};
List list = page.getResult();
Workbook workbook = ExportExcelUtils.createWorkbook(list,field,heads);
this.setRoponseHead("test.xlsx",request,response);
workbook.write(out);
out.flush();
out.close();
/**
* 设置返回反馈头
* @param fileName 需要保存的excel的文件名字
* @param request 用来兼容使用
* @param response 对应反馈头
* @throws UnsupportedEncodingException UTF-8解析异常
*/
private void setRoponseHead(String fileName,HttpServletRequest request,HttpServletResponse response) throws UnsupportedEncodingException {
response.setContentType("application/octet-stream; charset=utf-8");
if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0){
// firefox浏览器
response.setHeader("Content-Disposition", "attachment; filename=" + new String(fileName.getBytes("UTF-8"), "ISO8859-1"));
} else if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > 0){
// IE浏览器
response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(fileName, "UTF-8"));
}else{
//其他浏览器
response.setHeader("Content-disposition", "attachment;filename="+fileName);
}
}
一个controller的完整的流程：
1 new一个输出流
2 构造属性列与头部的对应关系
3 拿到list集合用ExportExcelUtils.createWorkbook 方法返回workbook对象；
4 setRoponseHead设置返回头部，与文件名；
5 关闭流
下面给出ExcelUtils工具类、以及映射实体的注解，或者表头与注解对应的工具类；
import com.iori.oms.common.util.TagUtil;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import java.util.List;
/**
* description:这个主要的工作是将list转化为Excel对象
* @author BlingSun
* @version 1.0 2018/10/31 16:00 by BlingSun 创建
**/
public class ExportExcelUtils {
/**
* 生成excel工作表格
* 格式为
*
* heads[0] heads[1] heads[2] heads[3] heads[4] ...
* data[0].fieldNames[0] data[0].fieldNames[1] data[0].fieldNames[2] data[0].fieldNames[3] data[0].fieldNames[4] ....
* data[1].fieldNames[0] data[1].fieldNames[1] data[1].fieldNames[2] data[1].fieldNames[3] data[1].fieldNames[4] ....
* ......
*
* @param data 这个需要装的数据
* @param fieldNames 这个指对应的的数据对象的字段名
* @param heads excel的表头
* @param 插入表格数据的值
* @return 完整的Excel表格
*/
static public Workbook createWorkbook(List data, String[] fieldNames, String[] heads){
//创建一个excel表
Workbook workbook = new SXSSFWorkbook(100);
Sheet sheet = workbook.createSheet();
//创建表头
Row row = sheet.createRow(0);
for (int cn = 0; cn < heads.length; cn++) {
Cell cell = row.createCell(cn);
cell.setCellValue(heads[cn]);
}
//这个用表标注当前是第几行
int line=1;
//添加数据
for(T item:data){
//创建一行的row数据
row=sheet.createRow(line++);
//填充row
for(int i=0;i import com.iori.oms.common.tag.Column;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* description: 对注解进行解析的工具类
* @author BlingSun
* @version 2018/9/20 11:26
* @since 2018/9/20 11:26
**/
public class TagUtil {
/**
*
* @param clazz 需要获取的属性-列名映射的类
* @return 映射的关系
* @throws Exception 处理异常
*/
public static Map getFieldToColumnMap(Class clazz) throws Exception {
//参数的列表
Map keyValue=new HashMap(8);
//处理属性的注解
List list=Arrays.asList(clazz.getDeclaredFields());
//规则:
//如果没有Column注解就不用映射到列表在，如果value没有值则为属性的名字
for(int i=0;i package com.iori.oms.order.vo;
import com.iori.oms.common.tag.Column;
import com.ycc.base.common.BaseDomain;
import java.util.Date;
/**
* description:
* 这个是一个VO向前端传送的数据,这个会包括join in的数据
* @author BlingSun
* @version 1.0 2018/10/27 9:39 by BlingSun ([email protected]) 创建
**/
public class OrderViewVO extends BaseDomain {
/**
* 自增主键
*/
@Column("t_iori_order.id")
private Long id;
/**
* 订单编号
*/
@Column("order_no")
private String orderNo;
/**
* 下单人的电话号码
*/
@Column("t_iori_customer.tel")
private String tel;
@Column("t_iori_customer.username")
private String username;
/**
* 提交订单的客户id
*/
@Column("customer_id")
private Long customerId;
/**
* 收货地址id
*/
@Column("address_id")
private Long addressId;
/**
* 付款类型:1-货到付款，2-在线付款
*/
@Column("payment_type")
private Integer paymentType;
/**
* 订单状态:0-已取消-1-未付款，2-已付款，3-已发货，4-交易成功，5-交易关闭 （默认值为：1）
*/
@Column("order_status")
private Integer orderStatus;
/**
* 实际付款总金额
*/
@Column("pay_amount")
private Integer payAmount;
/**
* 此次订单赠送的总积分
*/
@Column("total_integral")
private Integer totalIntegral;
/**
* 备注
*/
@Column("remark")
private String remark;
/**
* 交易关闭时间
*/
@Column("close_time")
private Date closeTime;
/**
* 交易完成时间
*/
@Column("end_time")
private Date endTime;
/**
* 付款时间
*/
@Column("payment_time")
private Date paymentTime;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getOrderNo() {
return orderNo;
}
public void setOrderNo(String orderNo) {
this.orderNo = orderNo;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public Long getCustomerId() {
return customerId;
}
public void setCustomerId(Long customerId) {
this.customerId = customerId;
}
public Long getAddressId() {
return addressId;
}
public void setAddressId(Long addressId) {
this.addressId = addressId;
}
public Integer getPaymentType() {
return paymentType;
}
public void setPaymentType(Integer paymentType) {
this.paymentType = paymentType;
}
public Integer getOrderStatus() {
return orderStatus;
}
public void setOrderStatus(Integer orderStatus) {
this.orderStatus = orderStatus;
}
public Integer getPayAmount() {
return payAmount;
}
public void setPayAmount(Integer payAmount) {
this.payAmount = payAmount;
}
public Integer getTotalIntegral() {
return totalIntegral;
}
public void setTotalIntegral(Integer totalIntegral) {
this.totalIntegral = totalIntegral;
}
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
public Date getCloseTime() {
return closeTime;
}
public void setCloseTime(Date closeTime) {
this.closeTime = closeTime;
}
public Date getEndTime() {
return endTime;
}
public void setEndTime(Date endTime) {
this.endTime = endTime;
}
public Date getPaymentTime() {
return paymentTime;
}
public void setPaymentTime(Date paymentTime) {
this.paymentTime = paymentTime;
}
@Override
public String toString() {
return "OrderViewVO{" +
"id=" + id +
", orderNo='" + orderNo + '\'' +
", tel='" + tel + '\'' +
", username='" + username + '\'' +
", customerId=" + customerId +
", addressId=" + addressId +
", paymentType=" + paymentType +
", orderStatus=" + orderStatus +
", payAmount=" + payAmount +
", totalIntegral=" + totalIntegral +
", remark='" + remark + '\'' +
", closeTime=" + closeTime +
", endTime=" + endTime +
", paymentTime=" + paymentTime +
", createTime=" + createTime +
'}';
}
}