java生成excel并下载（jxl）

/**

*该方法需导入jxl相关jar包，实现了页面触发、java生成excel并弹出下载框选择下载路径的进行保存的功能

*

*

*/

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.OutputStream;

import java.io.UnsupportedEncodingException;

import java.math.BigDecimal;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Iterator;

import java.util.List;

import javax.servlet.http.HttpServletResponse;

import com.sq.common.model.TBorrowRepay;

import com.sq.constant.SqAccountConstants;

import jxl.Workbook;

import jxl.format.Alignment;

import jxl.write.Label;

import jxl.write.WritableCellFormat;

import jxl.write.WritableFont;

import jxl.write.WritableSheet;

import jxl.write.WritableWorkbook;

/*

* 生成访问记录Excel表格工具类

*/

public class ExpExcelUtil {

private static WritableCellFormat wcf_value;
// 表格数据样式

private static WritableCellFormat wcf_value_left;

private static WritableCellFormat wcf_key;
// 表头样式

private static WritableCellFormat wcf_name_left;
// 表名样式

private static WritableCellFormat wcf_name_right;
// 表名样式

private static WritableCellFormat wcf_name_center;
// 表名样式

private static WritableCellFormat wcf_title;
// 页名称样式

private static WritableCellFormat wcf_percent_float;

// 生成还款计划Excel文件

public void genarateBorrowRepayExcel(List<TBorrowRepay> list, String fileName,HttpServletResponse response) throws Exception{

// 设置response的Header

response.addHeader("Content-Disposition", "attachment;filename="

+ new String((fileName).getBytes("GB2312"),"iso8859-1"));

OutputStream os = response.getOutputStream();

/****** 定义表格格式start *****/

WritableFont wf_key = new jxl.write.WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.NO_BOLD);

WritableFont wf_value = new jxl.write.WritableFont(WritableFont.createFont("宋体"), 10, WritableFont.NO_BOLD);

//设置单元格样式

wcf_value = new WritableCellFormat(wf_value);
//单元格字体样式

wcf_value.setAlignment(jxl.format.Alignment.CENTRE);
//单元格水平对齐样式

wcf_value.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
//单元格垂直对齐样式

wcf_value_left = new WritableCellFormat(wf_value);

wcf_value_left.setAlignment(jxl.format.Alignment.LEFT);

wcf_value_left.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);

wcf_value_left.setWrap(true);

wcf_key = new WritableCellFormat(wf_key);

wcf_key.setAlignment(jxl.format.Alignment.CENTRE);

wcf_key.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN);

wcf_name_left = new WritableCellFormat(wf_key);

wcf_name_left.setAlignment(Alignment.LEFT);

wcf_name_left.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);

wcf_name_right = new WritableCellFormat(wf_key);

wcf_name_right.setAlignment(Alignment.LEFT);

wcf_name_center = new WritableCellFormat(wf_key);

wcf_name_center.setAlignment(Alignment.CENTRE);

jxl.write.NumberFormat wf_percent_float = new jxl.write.NumberFormat("0.00");
//定义单元浮点数据类型

wcf_percent_float = new jxl.write.WritableCellFormat(wf_value,wf_percent_float);

wcf_percent_float.setAlignment(jxl.format.Alignment.CENTRE);

wcf_percent_float.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);

wcf_percent_float.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN);

WritableFont wf_title = new jxl.write.WritableFont(WritableFont.createFont("宋体"), 18, WritableFont.NO_BOLD);
//定义标题样式

wcf_title = new WritableCellFormat(wf_title);

wcf_title.setAlignment(Alignment.CENTRE);

wcf_title.setBorder(jxl.format.Border.ALL,jxl.format.BorderLineStyle.THIN);

/****** 定义表格格式end *****/

//根据传输过来的list，定义excel表格的列数

try{

WritableWorkbook wb = Workbook.createWorkbook(os);

//设置Excel工作簿名称

WritableSheet ws = wb.createSheet("还款计划", 0);

int startRowNum = 0;
// 起始行

int startColNum = 0;
// 起始列

int maxColSize = 18;
// 最大列数

// 设置列宽

ws.setColumnView(0, 10);

ws.setColumnView(1, 18);

ws.setColumnView(2, 12);

ws.setColumnView(3, 12);

ws.setColumnView(4, 12);

ws.setColumnView(5, 28);

ws.setColumnView(6, 28);

ws.setColumnView(7, 15);

ws.setColumnView(8, 15);

ws.setColumnView(9, 15);

ws.setColumnView(10, 15);

ws.setColumnView(11, 15);

ws.setColumnView(12, 15);

ws.setColumnView(13, 15);

ws.setColumnView(14, 15);

ws.setColumnView(15, 15);

ws.setColumnView(16, 15);

ws.setColumnView(17, 15);

ws.addCell(new Label(startColNum, startRowNum, "还款计划", wcf_title));

ws.mergeCells(startColNum, startRowNum, startColNum + maxColSize- 1, startRowNum);
//合并单元格，合并(1,0)到(1,9)

startColNum = 0;

startRowNum++;

//第1行，绘制表头

ws.addCell(new Label(startColNum, startRowNum, "借款ID",wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "借款人名称", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "应还款日期", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "实际还款日期", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "应还利息", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "应还本金", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "实还利息", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "实还本金", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "提前还款违约金", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "还款状态", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "回款状态", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "当前期数", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "总期数", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "罚金", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "逾期天数", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "催收费", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "平台垫付金额", wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, "平台垫付时间", wcf_key));

startColNum++;

//将行数加1，列数重置为0

startRowNum++;

startColNum = 0;

//添加记录

for(TBorrowRepay ar :list){

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getBorrowId()) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getLoginName()) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, DateTimeUtils.DateToString(ar.getRepaymentTime(), "YYYY/MM/dd") ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, ar.getRepaymentActualTime()==null?"":DateTimeUtils.DateToString(ar.getRepaymentActualTime(), "YYYY/MM/dd") ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getInterest().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getCapital().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getInterestActual().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getCapitalActual().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getPenaltyMoney().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(SqAccountConstants.getNameByRepayStatusCode(ar.getRepayStatus())) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(SqAccountConstants.getNameByRepayReceiveStatusCode(ar.getReceiveStatus())) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getSortOrder()) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getTotal()) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getExpiredMoney().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getExpiredDays()) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getCallFee().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, String.valueOf(ar.getSubstituteMoney().setScale(2, BigDecimal.ROUND_HALF_UP)) ,wcf_key));

startColNum++;

ws.addCell(new Label(startColNum, startRowNum, ar.getSubstituteTime() ==null?"":DateTimeUtils.DateToString(ar.getSubstituteTime(),"YYYY/MM/dd") ,wcf_key));

startColNum++;

//将行数加1，列数重置为0

startRowNum++;

startColNum = 0;

}

wb.write();
//生成Excel工作簿

wb.close();

}catch(Exception e){

e.printStackTrace();

}

}

}