标签：style blog http io os java ar for 文件
POIExcelUtils.java:
package com.saicfc.pmpf.internal.manage.utils;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import com.saicfc.pmpf.common.enums.ChannelCodeEnums;
/**
* @author lizhiyong
* @version $Id: POIExcelUtils.java, v 0.1
2014年9月18日 上午9:28:30 Exp $
*/
public class POIExcelUtils {
/**
* 定制日期格式
*/
private static String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
/**
* 定制浮点数格式
*/
private static String NUMBER_FORMAT = "#,##0.00";
/**
* 定制百分比格式
*/
private static String PRECENT_FORMAT = "0.00%";
private static HSSFWorkbook workbook = new HSSFWorkbook();
private static HSSFSheet sheet = workbook.createSheet();
private static HSSFRow row;
/**
* 导出Excel文件
* @param filePath
* @throws IOException
*/
public static void exportXLS(String filePath) throws IOException {
try {
FileOutputStream fOut = new FileOutputStream(filePath);
workbook.write(fOut);
fOut.flush();
fOut.close();
} catch (IOException e) {
e.getStackTrace();
}
}
/**
* 导出Excel文件
* @param file
* @throws IOException
*/
public static void exportXLS(File file) throws IOException {
try {
FileOutputStream fOut = new FileOutputStream(file);
workbook.write(fOut);
fOut.flush();
fOut.close();
} catch (IOException e) {
e.getStackTrace();
}
}
/**
* 增加一行
* @param index 行号
*/
public static void createRow(int index) {
row = sheet.createRow(index);
}
/**
* 设置单元格的字符值格式
* @param index 列号
* @param value 单元格填充的值
*/
public static void setStringCell(int index, String value) {
HSSFCell cell = row.createCell(index);
cell.setCellValue(value);
cell.setCellType(HSSFCell.CELL_TYPE_STRING);
}
/**
* 设置单元格日期格式
* @param index 列号
* @param value 单元格填充值
*/
public static void setDateCell(int index, Calendar value) {
HSSFCell cell = row.createCell(index);
cell.setCellValue(value.getTime());
//建立新的cell样式
HSSFCellStyle cellStyle = workbook.createCellStyle();
HSSFDataFormat format = workbook.createDataFormat();
//设置cell样式为定制的日期格式
cellStyle.setDataFormat(format.getFormat(DATE_FORMAT));
//居中
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//设置该cell日期的显示格式
cell.setCellStyle(cellStyle);
}
/**
* 设置单元格整数數值格式
* @param index 列号
* @param value 单元格填充值
*/
public static void setIntCell(int index, int value) {
HSSFCell cell = row.createCell(index);
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
cell.setCellValue(value);
}
/**
* 设置单元格浮点数值格式
* @param index 列号
* @param value 单元格填充值
*/
public static void setNumberCell(int index, double value) {
HSSFCell cell = row.createCell(index);
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
cell.setCellValue(value);
//建立新的cell样式
HSSFCellStyle cellStyle = workbook.createCellStyle();
HSSFDataFormat format = workbook.createDataFormat();
//设置cell样式为定制的浮点数格式
cellStyle.setDataFormat(format.getFormat(NUMBER_FORMAT));
//设置该cell浮点数的显示格式
cell.setCellStyle(cellStyle);
}
/**
* 设置单元格百分比格式
* @param index 列号
* @param value 单元格填充值
*/
public static void setPercentCell(int index, double value) {
HSSFCell cell = row.createCell(index);
cell.setCellValue(value);
//建立新的cell样式
HSSFCellStyle cellStyle = workbook.createCellStyle();
HSSFDataFormat format = workbook.createDataFormat();
cellStyle.setDataFormat(format.getFormat(PRECENT_FORMAT));
cell.setCellStyle(cellStyle);
}
public static void main(String[] args) {
System.out.println(" 开始导出Excel文件 ");
createRow(0);
setStringCell(0, " 编号 ");
setStringCell(1, " 名称 ");
setStringCell(2, " 日期 ");
setStringCell(3, " 金额 ");
createRow(1);
setIntCell(0, 1);
setStringCell(1, " 工商银行 ");
setDateCell(2, Calendar.getInstance());
setNumberCell(3, 111123.99);
createRow(2);
setIntCell(0, 2);
setStringCell(1, " 招商银行 ");
setDateCell(2, Calendar.getInstance());
setNumberCell(3, 222456.88);
try {
String filePath = "C:/lizhiyong.xls";
exportXLS(filePath);
System.out.println(" 导出Excel文件[成功] ");
} catch (IOException e1) {
System.out.println(" 导出Excel文件[失败] ");
e1.printStackTrace();
}
}
/**
* 生成一个Excel文件POI
* @param inputFile 输入模板文件路径
* @param outputFile 输入文件存放于服务器路径
* @param dataList 待导出数据
* @throws Exception
*/
@SuppressWarnings("rawtypes")
public static File exportExcelFile(String channelCode, String filePath, List titleList,
List dataList, String fileName) throws Exception {
File file = new File(filePath);
if (!file.exists()) {
file.mkdir();
System.out.println("文件夹已创建");
}
if (ChannelCodeEnums.PINGAN.getChannelCode().equals(channelCode)) {
//设置列宽
sheet.setColumnWidth(0, 5000);
sheet.setColumnWidth(1, 4000);
sheet.setColumnWidth(2, 8000);
}
//定义文件名格式并创建
File excelFile = File.createTempFile(fileName, ".xls", new File(filePath));
//添加头信息
int row = 0;
for (Iterator iterator = titleList.iterator(); iterator.hasNext();) {
LinkedHashMap titleMap = (LinkedHashMap) iterator.next();
//新增一行
createRow(row);
int cell = 0;
for (Iterator titleIterator = titleMap.entrySet().iterator(); titleIterator.hasNext();) {
java.util.Map.Entry titleEntry = (java.util.Map.Entry) titleIterator.next();
//向列中添加值
setStringCell(cell, (String) titleEntry.getValue());
cell++;
}
row++;
}
//下面开始添加单元格信息
int rows = titleList.size();
for (Iterator iterator = dataList.iterator(); iterator.hasNext();) {
LinkedHashMap dataMap = (LinkedHashMap) iterator.next();
//新增一行
createRow(rows);
int cells = 0;
for (Iterator dataIterator = dataMap.entrySet().iterator(); dataIterator.hasNext();) {
java.util.Map.Entry dataEntry = (java.util.Map.Entry) dataIterator.next();
if (ChannelCodeEnums.PINGAN.getChannelCode().equals(channelCode)) {
if ("refChannelOrderNo".equals(dataEntry.getKey())) {
//向列中添加值
setStringCell(cells, (String) dataEntry.getValue());
} else if ("amount".equals(dataEntry.getKey())) {
//向列中添加浮点型数值
setNumberCell(cells, Double.parseDouble((String) dataEntry.getValue()));
} else {
//向列中添加值
setStringCell(cells, (String) dataEntry.getValue());
}
} else {
//向列中添加值
setStringCell(cells, (String) dataEntry.getValue());
}
cells++;
}
rows++;
}
exportXLS(excelFile);
return excelFile;
}
}
下面是调用：
String fileName = "平安银行(PINGAN)退款数据";
List titleList = new ArrayList();
LinkedHashMap titleMap = new LinkedHashMap();
titleMap.put("title1", "订单号");
titleMap.put("title2", "退款金额");
titleMap.put("title3", "退款原因");
titleList.add(0, titleMap);
File file;
try {
file = POIExcelUtils.exportExcelFile(channelCode, filePath, titleList, exportData,
fileName);
//下载文件
downLoadFile(response, filePath, file);
} catch (Exception e) {
log.error("下载失败", e);
} /**
* 下载文件
* @param response
* @param filePath 文件路径
* @param file 文件
* @throws IOException
*/
public void downLoadFile(HttpServletResponse response, String filePath, File file)
throws IOException {
String fileName = file.getName();
//下载文件
FileManageUtils.exportFile(response, filePath + fileName, fileName);
//删除单个文件
FileManageUtils.deleteFile(filePath, fileName);
}package com.saicfc.pmpf.internal.manage.utils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.http.HttpServletResponse;
/**
* 文件管理
* @author lizhiyong
* @version $Id: FileManageUtils.java, v 0.1
2014年9月11日 上午9:37:47 Exp $
*/
public class FileManageUtils {
/**
* 下载文件
* @param response
* @param csvFilePath
* 文件路径
* @param fileName
* 文件名称
* @throws IOException
*/
public static void exportFile(HttpServletResponse response, String csvFilePath, String fileName)
throws IOException {
response.setContentType("application/csv;charset=GBK");
response.setHeader("Content-Disposition",
"attachment; filename=" + new String(fileName.getBytes("GBK"), "ISO8859-1"));
//URLEncoder.encode(fileName, "GBK")
InputStream in = null;
try {
in = new FileInputStream(csvFilePath);
int len = 0;
byte[] buffer = new byte[1024];
response.setCharacterEncoding("GBK");
OutputStream out = response.getOutputStream();
while ((len = in.read(buffer)) > 0) {
//out.write(new byte[] { (byte) 0xEF, (byte) 0xBB, (byte) 0xBF });
out.write(buffer, 0, len);
}
} catch (FileNotFoundException e) {
System.out.println(e);
} finally {
if (in != null) {
try {
in.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}
/**
* 删除该目录filePath下的所有文件
* @param filePath
* 文件目录路径
*/
public static void deleteFiles(String filePath) {
File file = new File(filePath);
if (file.exists()) {
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++) {
if (files[i].isFile()) {
files[i].delete();
}
}
}
}
/**
* 删除单个文件
* @param filePath
* 文件目录路径
* @param fileName
* 文件名称
*/
public static void deleteFile(String filePath, String fileName) {
File file = new File(filePath);
if (file.exists()) {
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++) {
if (files[i].isFile()) {
if (files[i].getName().equals(fileName)) {
files[i].delete();
return;
}
}
}
}
}
}
标签：style blog http io os java ar for 文件
原文地址：http://blog.csdn.net/xuxu198899223/article/details/39371489
