导出EXcel工具类如下：
package com.yyw.utils;
import jxl.Sheet;
import jxl.Workbook;
import jxl.biff.DisplayFormat;
import jxl.format.Alignment;
import jxl.format.VerticalAlignment;
import jxl.write.*;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* Excel处理工具类
*/
public class ExcelUtils {
private static SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
/**
* Excel模板下载
* @param filePath
* @param response
* @param fileName
* @return
* @throws Exception
*/
public static boolean downLoadFile(String filePath,HttpServletResponse response,
String fileName)throws Exception {
File file = new File(filePath);
response.setContentType("application/msexcel;charset=UTF-8");
response.setHeader("Content-Disposition", "attachment;filename=\""
+ new String(fileName.getBytes("GB2312"), "ISO8859-1") + "\"");
response.setContentLength((int)file.length());
byte[] buffer = new byte[4096];//缓冲区
BufferedOutputStream output = null;
BufferedInputStream input = null;
try {
output = new BufferedOutputStream(response.getOutputStream());
input = new BufferedInputStream(new FileInputStream(file));
int n = -1;
//遍历，开始下载
while ((n = input.read(buffer, 0, 4096)) > -1) {
output.write(buffer, 0, n);
}
output.flush();
response.flushBuffer();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
throw new Exception("Excel模板下载异常："+e.getMessage());
}finally{
//关闭流
if (input != null){
input.close();
}
if (output != null){
output.close();
}
}
return true;
}
//控制Excel里面每个sheet单元最多有多少行
private static int MAX_ROWS = 50000;
/**
* 填充Excel各单元格的值
* @param
* @param list 数据list
* @param os 输出流
* @param colNames 第一行列字段的中文名称
* @param colParams 各列对应对象的属性
* @param sheetName sheet的名称
*/
public static void setExcel(List list,OutputStream os,String[] colNames,String[] colParams,
String sheetName,Integer col)throws Exception{
try {
WritableWorkbook workbook = Workbook.createWorkbook(os);
//设定一个sheet里面只能放50000条数据
int num = list.size()/MAX_ROWS + 1;
for(int i=0;i list.size()){
num_end = list.size();
}
for(int k=num_start;k
* @param list 需要导出的数据
* @param os 输出流
* @param colNames 第一行列字段的中文名称
* @param colParams 各列对应对象的属性
* @param sheetName sheet的名称
* @param remakeMap 每一列对应的的数字代表什么意思，例如 sex 1，男；2，女；，导出时希望显示汉字而不是显示数字
*/
public static void setExcelWithExpectNum(List list,OutputStream os,String[] colNames,String[] colParams,
String sheetName,Integer col,Map> remakeMap)throws Exception{
try {
WritableWorkbook workbook = Workbook.createWorkbook(os);
//设定一个sheet里面只能放50000条数据
int num = list.size()/MAX_ROWS + 1;
for(int i=0;i list.size()){
num_end = list.size();
}
for(int k=num_start;k> entry : remakeMap.entrySet()){
if (temp.equals(entry.getKey())){
value = entry.getValue().get(value);
}
}
if(StringUtil.isEmpty(value) || "null".equals(value)){
label = new jxl.write.Label(colNum++,rowNum+1,"",wcf_cell);
}else{
label = new jxl.write.Label(colNum++,rowNum+1,value,wcf_cell);
}
sheet.addCell(label);
}
rowNum++;
}
}
workbook.write();
workbook.close();
os.close();
} catch (Exception e) {
e.printStackTrace();
throw new Exception("填充Excel各单元格异常:"+e.getMessage());
}
}
/**
* 填充Excel各单元格的值
* @param
* @param list
* @param os
* @param colNames 第一行列字段的中文名称
* @param colParams 各列对应对象的属性
* @param sheetName sheet的名称
*/
public static void setToExcel(List list,OutputStream os,String[] colNames,String[] colParams,
String sheetName)throws Exception{
try {
WritableWorkbook workbook = Workbook.createWorkbook(os);
//设定一个sheet里面只能放50000条数据
int num = list.size()/MAX_ROWS + 1;
for(int i=0;i list.size()){
num_end = list.size();
}
for(int k=num_start;k void setExcelByCol(List list,OutputStream os,String[] colNames,String[] colParams,
String sheetName,Object[] colStyle)throws Exception{
try {
WritableWorkbook workbook = Workbook.createWorkbook(os);
//设定一个sheet里面只能放50000条数据
int num = list.size()/MAX_ROWS + 1;
for(int i=0;i list.size()){
num_end = list.size();
}
for(int k=num_start;k> parseExcelData(InputStream inputStream,String[] colProperty,String[] colName) throws Exception{
if(colProperty.length == 0){
throw new Exception("每一列对应的属性值不能为空！");
}
List> list = new ArrayList>();
Workbook workbook = Workbook.getWorkbook(inputStream); //处理输入流
Sheet[] sheet = workbook.getSheets();
if (sheet != null) {
// for(int i=0;i map = new LinkedHashMap();
for(int k=0;k
引用如下：
//存放信息的数组
ArrayList> acountSelf_data1 = (ArrayList>)acountSelf_data.get("acountSelf_data");
//excel表头
String[] colNames = { "公司名称", "账期起始日期","账期停用日期","信用额度","省份","客户类型","门店数","MTD账期GMV","MTD自营现金GMV","MTD活动现金GMV","MTD合计GMV","剩余额度","MTD额度使用率","额度占用率","招商","运营","2017-12GMV","2018-01GMV","2018-02GMV","2018-03GMV","2018-04GMV","2018-05GMV","2018-06GMV","2018-07GMV","GMV"};
//表头对应的字段名称
String[] colParams = { "buyer_name", "start_date", "end_date", "credit_limit", "RCV_REG_PROV", "param_name", "CUST_Count","gmv_mtd_zq","gmv_mtd_xj1","gmv_mtd_xj2","gmv_mtd_all","avl_limit","rate_mtd_use","rate_use","op","bd","2017-12GMV","2018-01GMV","2018-02GMV","2018-03GMV","2018-04GMV","2018-05GMV","2018-06GMV","2018-07GMV","GMV"};
//25为一共几列，sheetname是sheet名称
ExcelUtils.setExcel(acountSelf_data1,out,colNames,colParams,null,25);
