POI生成Excel文件/POI读取Excel文件
2017-12-04 09:34
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package com.ultrapower.gcos.common;
import com.ultrapower.gcos.entity.app.AppManage;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class ExcelUtil {
private Logger logger = LoggerFactory.getLogger(this.getClass());
public static final int SHEET_SIZE = 50000;
private static final String SUB_FILE = "\\.";
private static final String BIG_SPLIT = "_";
private static final String STR_EMP = "";
private static final int COL_WIDTH = 15;
private static final String[] HEADERS = {"应用ID","应用名称","别名","路径","应用类型","应用状态","描述"};
/*生成excel文件*/
//filePath获取方式 request.getSession().getServletContext().getRealPath("/").concat("/xxx").concat(".xls")
public int invokExportExcel(List<String[]> datalist, String filePath){
int result = ExportExcel(datalist, filePath, SHEET_SIZE, "big", true);
return result;
}
/*导入*/
public List<AppManage> invokImportExcel(MultipartFile filePath) throws Exception {
InputStream is = filePath.getInputStream();
List<AppManage> data = importFromExcel(is);
return data;
}
/**
* 数据导出
* @param datalist
* @param filePath
* @param sheetMaxSize
* @param mode
* @param compress
* @return
*/
private int ExportExcel(List<String[]> datalist, String filePath, int sheetMaxSize, String mode, boolean compress) {
try {
filePath = filePath.replaceAll("\\\\", "/");
int endCom = filePath.lastIndexOf("/");
int fileCount = 1;
if (sheetMaxSize < 2 || sheetMaxSize > 65535) {
sheetMaxSize = SHEET_SIZE;
}
// 文件路径
List<String> file_path_s = new ArrayList<String>();
// 路径
String path = filePath.substring(0, endCom);
// 文件名
String filename = filePath.substring(endCom + 1, filePath.length());
String baseName = filename.split(SUB_FILE)[0];
String expName = filename.split(SUB_FILE).length > 1 ? filename.split(SUB_FILE)[1] : STR_EMP;
if ("big".equals(mode)) {
filePath = path + File.separator + baseName + BIG_SPLIT + fileCount + "." + expName;
}
//创建导出Excel存放路径
path = this.createFolder(path);
//这边导出的文件是按当前毫秒值命名的, 并且是最多导出10条记录
//申明一个工作薄
HSSFWorkbook workbook = null;
//创建可以写入的工作表
HSSFSheet sheet = null;
//导出的数据
List<String[]> dataList = null;
//分类数据
Map<String, List<String[]>> data = null;
List<String[]> typeList = null;
if(datalist != null && datalist != null && !datalist.isEmpty()){
data = new HashMap<String, List<String[]>>();//String--sheet标题; list所有的数据集合
dataList = datalist;
data.put("app信息", dataList);
//文件名取得当前时间毫秒值
File excelFile = new File(filePath);
if(!excelFile.exists()){
file_path_s.add(filePath);
workbook = new HSSFWorkbook();
HSSFCellStyle style = this.getHeaderStyle(workbook);
HSSFCellStyle dataStyle = getDataStyle(workbook);
//循环创建sheet页
for(String typeName : data.keySet()){
//定义sheet页的标题名称
sheet = workbook.createSheet(typeName);
typeList = data.get(typeName);
//写入列名
HSSFRow row = sheet.createRow(0);
row.setHeight((short) 600);
HSSFCell cell = null;
String[] hears = HEADERS;
for(int i = 0; i < hears.length; i++) {
sheet.setColumnWidth(i, (short)(35.7*180));
cell = row.createCell(i);
cell.setCellStyle(style);
//根据国际化信息设置对应的列名
cell.setCellValue(hears[i]);
}
//写入数据
for(int i=1; i<typeList.size()+1; i++){
row = sheet.createRow(i);
row.setHeight((short)(15.625*25));
String[] str = typeList.get(i-1);
for(int j=0; j<str.length; j++){
cell = row.createCell(j);
cell.setCellStyle(dataStyle);
cell.setCellValue(new HSSFRichTextString(str[j]));
}
}
}
}
}
FileOutputStream fos = new FileOutputStream(filePath);
workbook.write(fos);
fos.flush();
fos.close();
if (compress) {
zip(file_path_s, path + File.separator + baseName + ".zip");
}
return 1;
} catch (Exception e) {
e.printStackTrace();
}
return 0;
}
private HSSFCellStyle getHeaderStyle(HSSFWorkbook workbook) {
// 生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
4000
// 设置这些样式
style.setFillForegroundColor(HSSFColor.ROYAL_BLUE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setFontHeightInPoints((short)10.5);
font.setColor(HSSFColor.WHITE.index);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
private static HSSFCellStyle getDataStyle(HSSFWorkbook workbook) {
// 生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.WHITE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
private String createFolder(String path) {
File file = new File(path);
if (!file.exists()) {
file.mkdirs();
}
return path;
}
private void zip(List<String> filepaths, String zipFileName) throws Exception {
File file = new File(zipFileName);
if (!file.exists()) {
file.createNewFile();
}
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
for (int i = 0; i < filepaths.size(); i++) {
File f = new File(filepaths.get(i));
out.putNextEntry(new ZipEntry(f.getName()));
FileInputStream in = new FileInputStream(f);
int b;
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
this.deleteFile(filepaths.get(i));
}
out.flush();
out.finish();
out.close();
}
private boolean deleteFile(String filepath) throws Exception {
File file = new File(filepath);
return file.delete();
}
/**
* 数据导入
* @param is
* @return
* @throws IOException
*/
private List<AppManage> importFromExcel(InputStream is) throws IOException {
HSSFWorkbook wb = new HSSFWorkbook(is);
HSSFSheet sheet = wb.getSheetAt(0);
String sheetName = sheet.getSheetName();
logger.debug("sheet页名称====="+sheetName);
if(!"app信息".equals(sheetName)){
sheet = wb.getSheetAt(1);
}
List<AppManage> data = new ArrayList<AppManage>();
// 获取第一行的数据
int rowbegin = 1;
Row exrow = sheet.getRow(0);
int LastRowNum = 0;
int begin = sheet.getFirstRowNum();
int end = sheet.getLastRowNum();
for (int i = begin; i <= end; i++) {
if (null == sheet.getRow(i)) {
break;
}
LastRowNum++;
}
if (exrow != null) {
Cell excell = exrow.getCell(0);
String ex_excelTopValue = excell.getStringCellValue();
// 如果单元格数据为（应用ID）循环从这里开始
if("应用ID".equals(ex_excelTopValue)){
rowbegin=1;
}else{
rowbegin=2;
}
}
try {
// 行
for (int r = rowbegin ; r <= LastRowNum ; r++) {
HSSFRow row = sheet.getRow(r);
if (row == null) {
continue;
}
AppManage app = new AppManage();
// 列值
app.setAppName(getValue(row.getCell(0)));
app.setAppAlias(getValue(row.getCell(1)));
app.setAppPath(getValue(row.getCell(2)));
app.setAppType(getValue(row.getCell(3)));
app.setAppEnable("启用".equals(getValue(row.getCell(4))) == true ? "1" : "0");
app.setAppDescription(getValue(row.getCell(5)));
if(app != null && app.getAppName() != "") {
data.add(app);
}
}
} finally {
is.close();
}
return data;
}
private String getValue(HSSFCell cell) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String value = "";
if (cell == null) {
value = "";
} else {
switch(cell.getCellType()) {
case HSSFCell.CELL_TYPE_STRING:
value = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
value = ""+cell.getBooleanCellValue();
break;
case HSSFCell.CELL_TYPE_NUMERIC:
if (org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell)) {
value = sdf.format(cell.getDateCellValue());
} else {
value = ""+cell.getNumericCellValue();
}
break;
case HSSFCell.CELL_TYPE_FORMULA:
value = cell.getCellFormula();
break;
case HSSFCell.CELL_TYPE_BLANK:
value = "";
break;
default:
value = "";
break;
}
}
return value;
}
}
import com.ultrapower.gcos.entity.app.AppManage;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class ExcelUtil {
private Logger logger = LoggerFactory.getLogger(this.getClass());
public static final int SHEET_SIZE = 50000;
private static final String SUB_FILE = "\\.";
private static final String BIG_SPLIT = "_";
private static final String STR_EMP = "";
private static final int COL_WIDTH = 15;
private static final String[] HEADERS = {"应用ID","应用名称","别名","路径","应用类型","应用状态","描述"};
/*生成excel文件*/
//filePath获取方式 request.getSession().getServletContext().getRealPath("/").concat("/xxx").concat(".xls")
public int invokExportExcel(List<String[]> datalist, String filePath){
int result = ExportExcel(datalist, filePath, SHEET_SIZE, "big", true);
return result;
}
/*导入*/
public List<AppManage> invokImportExcel(MultipartFile filePath) throws Exception {
InputStream is = filePath.getInputStream();
List<AppManage> data = importFromExcel(is);
return data;
}
/**
* 数据导出
* @param datalist
* @param filePath
* @param sheetMaxSize
* @param mode
* @param compress
* @return
*/
private int ExportExcel(List<String[]> datalist, String filePath, int sheetMaxSize, String mode, boolean compress) {
try {
filePath = filePath.replaceAll("\\\\", "/");
int endCom = filePath.lastIndexOf("/");
int fileCount = 1;
if (sheetMaxSize < 2 || sheetMaxSize > 65535) {
sheetMaxSize = SHEET_SIZE;
}
// 文件路径
List<String> file_path_s = new ArrayList<String>();
// 路径
String path = filePath.substring(0, endCom);
// 文件名
String filename = filePath.substring(endCom + 1, filePath.length());
String baseName = filename.split(SUB_FILE)[0];
String expName = filename.split(SUB_FILE).length > 1 ? filename.split(SUB_FILE)[1] : STR_EMP;
if ("big".equals(mode)) {
filePath = path + File.separator + baseName + BIG_SPLIT + fileCount + "." + expName;
}
//创建导出Excel存放路径
path = this.createFolder(path);
//这边导出的文件是按当前毫秒值命名的, 并且是最多导出10条记录
//申明一个工作薄
HSSFWorkbook workbook = null;
//创建可以写入的工作表
HSSFSheet sheet = null;
//导出的数据
List<String[]> dataList = null;
//分类数据
Map<String, List<String[]>> data = null;
List<String[]> typeList = null;
if(datalist != null && datalist != null && !datalist.isEmpty()){
data = new HashMap<String, List<String[]>>();//String--sheet标题; list所有的数据集合
dataList = datalist;
data.put("app信息", dataList);
//文件名取得当前时间毫秒值
File excelFile = new File(filePath);
if(!excelFile.exists()){
file_path_s.add(filePath);
workbook = new HSSFWorkbook();
HSSFCellStyle style = this.getHeaderStyle(workbook);
HSSFCellStyle dataStyle = getDataStyle(workbook);
//循环创建sheet页
for(String typeName : data.keySet()){
//定义sheet页的标题名称
sheet = workbook.createSheet(typeName);
typeList = data.get(typeName);
//写入列名
HSSFRow row = sheet.createRow(0);
row.setHeight((short) 600);
HSSFCell cell = null;
String[] hears = HEADERS;
for(int i = 0; i < hears.length; i++) {
sheet.setColumnWidth(i, (short)(35.7*180));
cell = row.createCell(i);
cell.setCellStyle(style);
//根据国际化信息设置对应的列名
cell.setCellValue(hears[i]);
}
//写入数据
for(int i=1; i<typeList.size()+1; i++){
row = sheet.createRow(i);
row.setHeight((short)(15.625*25));
String[] str = typeList.get(i-1);
for(int j=0; j<str.length; j++){
cell = row.createCell(j);
cell.setCellStyle(dataStyle);
cell.setCellValue(new HSSFRichTextString(str[j]));
}
}
}
}
}
FileOutputStream fos = new FileOutputStream(filePath);
workbook.write(fos);
fos.flush();
fos.close();
if (compress) {
zip(file_path_s, path + File.separator + baseName + ".zip");
}
return 1;
} catch (Exception e) {
e.printStackTrace();
}
return 0;
}
private HSSFCellStyle getHeaderStyle(HSSFWorkbook workbook) {
// 生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
4000
// 设置这些样式
style.setFillForegroundColor(HSSFColor.ROYAL_BLUE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setFontHeightInPoints((short)10.5);
font.setColor(HSSFColor.WHITE.index);
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
private static HSSFCellStyle getDataStyle(HSSFWorkbook workbook) {
// 生成一个样式
HSSFCellStyle style = workbook.createCellStyle();
// 设置这些样式
style.setFillForegroundColor(HSSFColor.WHITE.index);
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
style.setBorderTop(HSSFCellStyle.BORDER_THIN);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
// 生成一个字体
HSSFFont font = workbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
private String createFolder(String path) {
File file = new File(path);
if (!file.exists()) {
file.mkdirs();
}
return path;
}
private void zip(List<String> filepaths, String zipFileName) throws Exception {
File file = new File(zipFileName);
if (!file.exists()) {
file.createNewFile();
}
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
for (int i = 0; i < filepaths.size(); i++) {
File f = new File(filepaths.get(i));
out.putNextEntry(new ZipEntry(f.getName()));
FileInputStream in = new FileInputStream(f);
int b;
while ((b = in.read()) != -1) {
out.write(b);
}
in.close();
this.deleteFile(filepaths.get(i));
}
out.flush();
out.finish();
out.close();
}
private boolean deleteFile(String filepath) throws Exception {
File file = new File(filepath);
return file.delete();
}
/**
* 数据导入
* @param is
* @return
* @throws IOException
*/
private List<AppManage> importFromExcel(InputStream is) throws IOException {
HSSFWorkbook wb = new HSSFWorkbook(is);
HSSFSheet sheet = wb.getSheetAt(0);
String sheetName = sheet.getSheetName();
logger.debug("sheet页名称====="+sheetName);
if(!"app信息".equals(sheetName)){
sheet = wb.getSheetAt(1);
}
List<AppManage> data = new ArrayList<AppManage>();
// 获取第一行的数据
int rowbegin = 1;
Row exrow = sheet.getRow(0);
int LastRowNum = 0;
int begin = sheet.getFirstRowNum();
int end = sheet.getLastRowNum();
for (int i = begin; i <= end; i++) {
if (null == sheet.getRow(i)) {
break;
}
LastRowNum++;
}
if (exrow != null) {
Cell excell = exrow.getCell(0);
String ex_excelTopValue = excell.getStringCellValue();
// 如果单元格数据为（应用ID）循环从这里开始
if("应用ID".equals(ex_excelTopValue)){
rowbegin=1;
}else{
rowbegin=2;
}
}
try {
// 行
for (int r = rowbegin ; r <= LastRowNum ; r++) {
HSSFRow row = sheet.getRow(r);
if (row == null) {
continue;
}
AppManage app = new AppManage();
// 列值
app.setAppName(getValue(row.getCell(0)));
app.setAppAlias(getValue(row.getCell(1)));
app.setAppPath(getValue(row.getCell(2)));
app.setAppType(getValue(row.getCell(3)));
app.setAppEnable("启用".equals(getValue(row.getCell(4))) == true ? "1" : "0");
app.setAppDescription(getValue(row.getCell(5)));
if(app != null && app.getAppName() != "") {
data.add(app);
}
}
} finally {
is.close();
}
return data;
}
private String getValue(HSSFCell cell) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String value = "";
if (cell == null) {
value = "";
} else {
switch(cell.getCellType()) {
case HSSFCell.CELL_TYPE_STRING:
value = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
value = ""+cell.getBooleanCellValue();
break;
case HSSFCell.CELL_TYPE_NUMERIC:
if (org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell)) {
value = sdf.format(cell.getDateCellValue());
} else {
value = ""+cell.getNumericCellValue();
}
break;
case HSSFCell.CELL_TYPE_FORMULA:
value = cell.getCellFormula();
break;
case HSSFCell.CELL_TYPE_BLANK:
value = "";
break;
default:
value = "";
break;
}
}
return value;
}
}
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