去百度下载一个poi包，在Myeclipse中右键点击项目名称找到Build path 添加包
package cn.com.yitong.app.dbank.vo;
public class LogInfoOut {
private int id;
private String tranDate;
private String crDrMaintInd;
private String tranAmt;
private String actualBalAmt;
private String tfrAcctNo;
private String tfrAcctName;
private String tranDesc;
public LogInfoOut(){}
public LogInfoOut(int id, String tranDate, String crDrMaintInd,String tranAmt, String actualBalAmt, String tfrAcctNo,String tfrAcctName, String tranDesc) {
this.id = id;
this.tranDate = tranDate;
this.crDrMaintInd = crDrMaintInd;
this.tranAmt = tranAmt;
this.actualBalAmt = actualBalAmt;
this.tfrAcctNo = tfrAcctNo;
this.tfrAcctName = tfrAcctName;
this.tranDesc = tranDesc;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getTranDate() {
return tranDate;
}
public void setTranDate(String tranDate) {
this.tranDate = tranDate;
}
public String getCrDrMaintInd() {
return crDrMaintInd;
}
public void setCrDrMaintInd(String crDrMaintInd) {
this.crDrMaintInd = crDrMaintInd;
}
public String getTranAmt() {
return tranAmt;
}
public void setTranAmt(String tranAmt) {
this.tranAmt = tranAmt;
}
public String getActualBalAmt() {
return actualBalAmt;
}
public void setActualBalAmt(String actualBalAmt) {
this.actualBalAmt = actualBalAmt;
}
public String getTfrAcctNo() {
return tfrAcctNo;
}
public void setTfrAcctNo(String tfrAcctNo) {
this.tfrAcctNo = tfrAcctNo;
}
public String getTfrAcctName() {
return tfrAcctName;
}
public void setTfrAcctName(String tfrAcctName) {
this.tfrAcctName = tfrAcctName;
}
public String getTranDesc() {
return tranDesc;
}
public void setTranDesc(String tranDesc) {
this.tranDesc = tranDesc;
}
}
/**
* EXCEL报表工具类.
*
* @author Jeelon
*/
public class ExportExcel {
private HSSFWorkbook wb = null;
private HSSFSheet sheet = null;
/**
*
*无参构造器
**/
public ExportExcel(){}
/**
* @param wb
* @param sheet
*/
public ExportExcel(HSSFWorkbook wb, HSSFSheet sheet) {
this.wb = wb;
this.sheet = sheet;
}
/**
* 创建通用EXCEL头部
* @param headString
* 头部显示的字符
* @param colSum
* 该报表的列数
*/
@SuppressWarnings({ "deprecation", "unused" })
public void createNormalHead(String headString, int colSum) {
// 设置第一行、第一列
HSSFRow row = sheet.createRow(0);
HSSFCell cell = row.createCell(0);
// 定义单元格为字符串类型
cell.setCellType(HSSFCell.ENCODING_UTF_16);// 中文处理
cell.setCellValue(new HSSFRichTextString(headString));
// 指定合并区域
/**
* public Region(int rowFrom, short colFrom, int rowTo, short colTo)
*/
sheet.addMergedRegion(new Region(0, (short) 0, 0, (short) colSum));
// 定义单元格格式，添加单元格表样式，并添加到工作簿
HSSFCellStyle cellStyle = wb.createCellStyle();
// 设置单元格水平对齐类型
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐
cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐
cellStyle.setWrapText(true);// 指定单元格自动换行
// 设置单元格字体
HSSFFont font = wb.createFont();
// font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// font.setFontName("宋体");
// font.setFontHeight((short) 600);
// cellStyle.setFont(font);
cell.setCellStyle(cellStyle);
}
/**
* 创建通用报表第二行
* @param params
* 统计条件数组
* @param colSum
* 需要合并到的列索引
*/
@SuppressWarnings("deprecation")
public void createNormalTwoRow(String[] params, int colSum) {
// 创建第二行 、第二列
HSSFRow row1 = sheet.createRow(1);
row1.setHeight((short) 400);
HSSFCell cell2 = row1.createCell(0);
cell2.setCellType(HSSFCell.ENCODING_UTF_16);
cell2.setCellValue(new HSSFRichTextString("时间：" + params[0] + "至" + params[1]));
// 指定合并区域
/**
* public Region(int rowFrom, short colFrom, int rowTo, short colTo)
*/
sheet.addMergedRegion(new Region(1, (short) 0, 1, (short) colSum));
HSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐
cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐
cellStyle.setWrapText(true);// 指定单元格自动换行
// 设置单元格字体
HSSFFont font = wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
font.setFontName("宋体");
font.setFontHeight((short) 250);
ellStyle.setFont(font);
cell2.setCellStyle(cellStyle);
}
/**
* 设置报表标题
* @param columHeader
* 标题字符串数组
*/
public void createColumHeader(String[] columHeader) {
// 设置列头 在第三行
HSSFRow row2 = sheet.createRow(2);
// 指定行高
row2.setHeight((short) 600);
HSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐
cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐
cellStyle.setWrapText(true);// 指定单元格自动换行
// 单元格字体
HSSFFont font = wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
font.setFontName("宋体");
font.setFontHeight((short) 250);
cellStyle.setFont(font);
// 设置单元格背景色
cellStyle.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);
cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
HSSFCell cell3 = null;
for (int i = 0; i < columHeader.length; i++) {
cell3 = row2.createCell(i);
cell3.setCellType(HSSFCell.ENCODING_UTF_16);
cell3.setCellStyle(cellStyle);
cell3.setCellValue(new HSSFRichTextString(columHeader[i]));
}
}
/**
* 创建内容单元格
* @param wb
* HSSFWorkbook
* @param row
* HSSFRow
* @param col
* short型的列索引
* @param align
* 对齐方式
* @param val
* 列值
*/
public void cteateCell(HSSFWorkbook wb, HSSFRow row, int col, short align, String val) {
HSSFCell cell = row.createCell(col);
cell.setCellType(HSSFCell.ENCODING_UTF_16);
cell.setCellValue(new HSSFRichTextString(val));
HSSFCellStyle cellstyle = wb.createCellStyle();
cellstyle.setAlignment(align);
cell.setCellStyle(cellstyle);
}
/**
* 创建合计行
* @param colSum
* 需要合并到的列索引
* @param cellValue
*/
@SuppressWarnings("deprecation")
public void createLastSumRow(int colSum, String[] cellValue) {
HSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 指定单元格居中对齐
cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 指定单元格垂直居中对齐
cellStyle.setWrapText(true);// 指定单元格自动换行
// 单元格字体
HSSFFont font = wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
font.setFontName("宋体");
font.setFontHeight((short) 250);
cellStyle.setFont(font);
// 获取工作表最后一行
HSSFRow lastRow = sheet.createRow((short) (sheet.getLastRowNum() + 1));
HSSFCell sumCell = lastRow.createCell(0);
sumCell.setCellValue(new HSSFRichTextString("合计"));
sumCell.setCellStyle(cellStyle);
// 合并 最后一行的第零列-最后一行的第一列
sheet.addMergedRegion(new Region(sheet.getLastRowNum(), (short) 0,
sheet.getLastRowNum(), (short) colSum));// 指定合并区域
for (int i = 2; i < (cellValue.length + 2); i++) {
// 定义最后一行的第三列
sumCell = lastRow.createCell(i);
sumCell.setCellStyle(cellStyle);
// 定义数组 从0开始。
sumCell.setCellValue(new HSSFRichTextString(cellValue[i - 2]));
}
}
/**
* 输入EXCEL文件
* @param fileName
* 文件名
*/
public void outputExcel(String fileName) {
FileOutputStream fos = null;
try {
fos = new FileOutputStream(new File(fileName));
wb.write(fos);
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* @return the sheet
*/
public HSSFSheet getSheet() {
return sheet;
}
/**
* @param sheet
* the sheet to set
*/
public void setSheet(HSSFSheet sheet) {
this.sheet = sheet;
}
/**
* @return the wb
*/
public HSSFWorkbook getWb() {
return wb;
}
/**
* @param wb
* the wb to set
*/
public void setWb(HSSFWorkbook wb) {
this.wb = wb;
}
}
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
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;
@SuppressWarnings("serial")
public class OutputExcel extends HttpServlet {
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
List<Student> list = new ArrayList<Student>();
for(int i = 0 ; i <10;<i++){
LogInfoOut logInfoOut = new LogInfoOut(i+1;"20150528","转入","100.00","2001.00","62202******5665","张三","转账");
list.add(logInfoOut);
}
String fileName = "导出Excel.xls";
fileName = new String(fileName.getBytes("GBK"), "iso8859-1");
response.reset();
response.setHeader("Content-Disposition", "attachment;filename=" + fileName);// 指定下载的文件名
response.setContentType("application/vnd.ms-excel");
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
OutputStream output = response.getOutputStream();
BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);
// 定义单元格报头
String worksheetTitle = "Excel导出Student信息";
HSSFWorkbook wb = new HSSFWorkbook();
// 创建单元格样式
HSSFCellStyle cellStyleTitle = wb.createCellStyle();
// 指定单元格居中对齐
cellStyleTitle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// 指定单元格垂直居中对齐
cellStyleTitle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 指定当单元格内容显示不下时自动换行
cellStyleTitle.setWrapText(true);
// ------------------------------------------------------------------
HSSFCellStyle cellStyle = wb.createCellStyle();
// 指定单元格居中对齐
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
// 指定单元格垂直居中对齐
cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 指定当单元格内容显示不下时自动换行
cellStyle.setWrapText(true);
// ------------------------------------------------------------------
// 设置单元格字体
HSSFFont font = wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
font.setFontName("宋体");
font.setFontHeight((short) 200);
cellStyleTitle.setFont(font);
// 工作表名
String id = "序号";
String tranDate="交易时间";
String crDrMaintInd="交易类型";
String tranAmt = "交易金额";
String actualBalAmt="账户余额";
String tfrAcctNo="对方账号";
String tfrAcctName="对方名称";
String tranDesc="摘要";
HSSFSheet sheet = wb.createSheet();
ExportExcel exportExcel = new ExportExcel(wb, sheet);
// 创建报表头部
exportExcel.createNormalHead(worksheetTitle, 6);
// 定义第一行
HSSFRow row1 = sheet.createRow(1);
HSSFCell cell1 = row1.createCell(0);
/第一行第一列
cell1.setCellStyle(cellStyleTitle);
ell1.setCellValue(new HSSFRichTextString(id));
//第一行第er列
cell1 = row1.createCell(1);
cell1.setCellStyle(cellStyleTitle);
cell1.setCellValue(new HSSFRichTextString(tranDate));
//第一行第san列
cell1 = row1.createCell(2);
cell1.setCellStyle(cellStyleTitle);
cell1.setCellValue(new HSSFRichTextString(crDrMaintInd));
//第一行第si列
cell1 = row1.createCell(3);
cell1.setCellStyle(cellStyleTitle);
cell1.setCellValue(new HSSFRichTextString(tranAmt));
//第一行第wu列
cell1 = row1.createCell(4);
cell1.setCellStyle(cellStyleTitle);
cell1.setCellValue(new HSSFRichTextString(actualBalAmt));
//第一行第liu列
cell1 = row1.createCell(5);
cell1.setCellStyle(cellStyleTitle);
cell1.setCellValue(new HSSFRichTextString(tfrAcctNo));
//第一行第qi列
cell1 = row1.createCell(6);
cell1.setCellStyle(cellStyleTitle);
cell1.setCellValue(new HSSFRichTextString(tfrAcctName));
//第一行第8列
cell1 = row1.createCell(7);
cell1.setCellStyle(cellStyleTitle);
cell1.setCellValue(new HSSFRichTextString(tranDesc));
//定义第二行
HSSFRow row = sheet.createRow(2);
HSSFCell cell = row.createCell(1);
Student student = new Student();
for (int i = 0; i < listLogIn.size(); i++) {
logInfoOut = listLogIn.get(i);
row = sheet.createRow(i + 1);
cell = row.createCell(0);
cell.setCellStyle(cellStyle);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getId() + ""));
cell = row.createCell(1);
cell.setCellStyle(cellStyle);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getTranDate()));
cell = row.createCell(2);
cell.setCellStyle(cellStyle);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getCrDrMaintInd() + ""));
cell = row.createCell(3);
cell.setCellStyle(cellStyle);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getTranAmt() + ""));
cell = row.createCell(4);
cell.setCellStyle(cellStyle);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getActualBalAmt()));
cell = row.createCell(5);
cell.setCellStyle(cellStyle);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getTfrAcctNo()));
cell = row.createCell(6);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getTfrAcctName()));
cell.setCellStyle(cellStyle);
cell = row.createCell(7);
cell.setCellValue(new HSSFRichTextString(logInfoOut.getTranDesc()));
cell.setCellStyle(cellStyle);
}
try {
bufferedOutPut.flush();
wb.write(bufferedOutPut);
bufferedOutPut.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
list.clear();
}
}2015-05-28
}
来源：https://www.cnblogs.com/caicai-blog/p/4535153.html