package com.practice.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class excelUtil {
public static void main(String[] args) {
String filePath="D:\eclipse\www.xlsx";
List<List<String>> data=importExecl(filePath);
System.out.println(data);
}
/**
* excel表的导入功能
* @作者：我
* @param filePath excel表的储存路径
* @return List<List<String>> 行(列(,,,,,))
*/
public static List<List<String>> importExecl(String filePath){
List<List<String>> data=new ArrayList<List<String>>();
File file=new File(filePath);
System.out.println(file);
//判断文件是否存在或者后缀名是否正确,否则返回为null
if(!file.exists()||!(isExcel2003(filePath) || isExcel2007(filePath))){
return null;
}
//判断文件的版本2003或者2007版
InputStream is = null;
//得到Excel工作簿对象
Workbook wb = null;
boolean isExcel2003 = true;
if(isExcel2007(filePath)){
isExcel2003 = false;
}
try {
is =new FileInputStream(filePath);
if(isExcel2003){
System.out.println("本表是2003版的excel表");
wb = new HSSFWorkbook(is);
}else{
System.out.println("本表是2007版的excel表");
wb=new XSSFWorkbook(is);
}
//得到Excel工作表对象
//得到第一个shell
Sheet sheet = wb.getSheetAt(0);
//得到所有行数
int totalRows=sheet.getPhysicalNumberOfRows();
// 得到Excel的列数
int totalCells=0;
if (totalRows >= 1 && sheet.getRow(0) != null){
totalCells = sheet.getRow(0).getPhysicalNumberOfCells();
}
//循环行
for(int rowNum=0;rowNum<totalRows;rowNum++){
Row row = sheet.getRow(rowNum);
if(row==null){
continue;
}
//存放本行中的所列的数据
List<String> rowLst = new ArrayList<String>();
//循环列
for(int column=0;column<totalCells;column++){
Cell cell = row.getCell(column);
String cellValue = "";
if(null!=cell){
//以下是判断数据的类型
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_NUMERIC: // 数字
if (HSSFDateUtil.isCellDateFormatted(cell)) {
// 处理日期格式、时间格式
SimpleDateFormat sdf = null;
if (cell.getCellStyle().getDataFormat() == HSSFDataFormat
.getBuiltinFormat("h:mm")) {
sdf = new SimpleDateFormat("HH:mm");
} else {// 日期
sdf = new SimpleDateFormat("yyyy-MM-dd");
}
java.util.Date date =cell.getDateCellValue();
cellValue = sdf.format(date);
} else if (cell.getCellStyle().getDataFormat() == 58) {
// 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
double value = cell.getNumericCellValue();
java.util.Date date =org.apache.poi.ss.usermodel.DateUtil
.getJavaDate(value);
cellValue = sdf.format(date);
} else {
//村数字格式
double value = cell.getNumericCellValue();
CellStyle style = cell.getCellStyle();
DecimalFormat format = new DecimalFormat();
String temp = style.getDataFormatString();
// 单元格设置成常规
if ("General".equals(temp)) {
format.applyPattern("#");
}
cellValue = format.format(value);
}
break;
case HSSFCell.CELL_TYPE_STRING: // 字符串
cellValue = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean
cellValue = cell.getBooleanCellValue() + "";
break;
case HSSFCell.CELL_TYPE_FORMULA: // 公式
cellValue = cell.getCellFormula() + "";
break;
case HSSFCell.CELL_TYPE_BLANK: // 空值
cellValue = "";
break;
case HSSFCell.CELL_TYPE_ERROR: // 故障
cellValue = "非法字符";
break;
default:
cellValue = "未知类型";
break;
}
}
rowLst.add(cellValue);
}
data.add(rowLst);
}
is.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return data;
}
/**
*
* @描述：是否是2003的excel，返回true是2003
*
* @作者：我
* @param filePath是文件名
* @参数：@return
*
* @返回值：boolean
*/
public static boolean isExcel2003(String filePath)
{
return filePath.matches("^.+\.(?i)(xls)$");
}
/**
*
* @描述：是否是2007的excel，返回true是2007
* @作者：我
* @param filePath是文件名
* @参数：@return
*
* @返回值：boolean
*/
public static boolean isExcel2007(String filePath)
{
return filePath.matches("^.+\.(?i)(xlsx)$");
}
}
package com.practice.util;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.Map.Entry;
public class StringUtils {
public static String replaceInfo(String info, Map<String, String> map) {
for (Entry<String, String> entity : map.entrySet()) {
info = info.replace(entity.getKey(), entity.getValue());
}
return info;
}
/**
*
* @return 获取一个唯一的uuid字符串
*/
public static String getUUID() {
return UUID.randomUUID().toString();
}
public static String getFristUpper(String str){
return str.substring(0,1).toUpperCase()+str.substring(1);
}
public static String format(String str, Object... args) {
if (str == null || args == null || args.length <= 0)
return null;
for (int i = 0; i < args.length; i++) {
str=str.replace(String.format("{%s}", i), args[i].toString());
}
return str;
}
/**
* @param str
* @return
*/
public static String getMarkString(String str) {
return String.format("'%s'", str);
}
public static String getMarkString(String str,String mark){
return mark+str+mark;
}
/**
* 替换 ' 为 ''
* @param str
* @return
*/
public static String replaceMark(String str) {
return str.replaceAll("'", "''");
}
/**
* 是否为 int
* @param str
* @return
*/
public static boolean isInt(String str) {
if (isNullOrEmpty(str))
return false;
String regex = "^\d+$";
return str.matches(regex);
}
/**
* 是否为
* @param Double
* @return
*/
public static boolean isDouble(String str) {
if (isNullOrEmpty(str))
return false;
String regex = "\d{1,}\.\d{1,}";
return str.matches(regex);
}
/**
* 是否为 null 获取 ""
* @param str
* @return
*/
public static boolean isNullOrEmpty(String str) {
return str == null || "".equals(str.trim());
}
/**
* 字符串转int 字符不是int 返回 0
* @param
*/
public static Integer getInt(String str) {
if (isInt(str))
return Integer.valueOf(str);
else
return 0;
}
/**
* 字符串转Double 字符不是Double 返回 null
* @param
*/
public static Double getDouble(String str) {
if (isDouble(str))
return Double.valueOf(str);
else
return null;
}
/**
*
* @param MD5
* @return
*
*/
public static String getMD5(String s) {
char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
try {
byte[] strTemp = s.getBytes();
MessageDigest mdTemp = MessageDigest.getInstance("MD5");
mdTemp.update(strTemp);
byte[] md = mdTemp.digest();
int j = md.length;
char str[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
return new String(str);
} catch (Exception e) {
return null;
}
}
//将id字符串拆分成List<Integer>
public static List<Integer> string2List(String str,String splitType){
if(str==null&&"".equals(str)){
return null;
}
List<Integer> list=new ArrayList<Integer>();
String [] ids=str.split(splitType);
for(String temp:ids){
list.add(Integer.parseInt(temp));
}
return list;
}
}
package com.practice.util;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import javax.imageio.ImageIO;
import org.springframework.web.multipart.MultipartFile;
public class IoUtils {
/**
*
* @param 绝对路径
* @return 是否是文件
*/
public static boolean isFile(String path) {
return path != null ? new File(path).isFile() : false;
}
/**
*
* @param 绝对路径
* @return 是否是一个文件夹
*/
public static boolean isDirectory(String path) {
return path != null ? new File(path).isDirectory() : false;
}
/**
* 获取文件名
*
* @param path
* @return
*/
public static String getFileName(String path) {
if (isFile(path))
return new File(path).getName();
else
return null;
}
/**
* 获取文件名
*
* @param file
* @return
*/
public static String getFileName(File file) {
if (file != null && file.isFile())
return file.getName();
else
return null;
}
/**
* 获取前缀
*
* @param path
* @return
*/
public static String getSuffix(String path) {
if (isFile(path))
return getSuffix(new File(path));
else
return null;
}
/**
* 创建文件夹
*
* @param path
* @return
*/
public static boolean createDirectories(String path) {
if (isDirectory(path)){
return true;
}
else{
//如果是文件 创建其文件夹
if(isFilePath(path)){
int num = path.lastIndexOf("\");
if(num<0){
num = path.lastIndexOf("/");
}
path = path.substring(0,num);
}
return new File(path).mkdirs();
}
}
/**
* 是否是一个 文件路径
* @param filePath
* @return
*/
public static boolean isFilePath(String filePath){
if(StringUtils.isNullOrEmpty(filePath)){
return false;
}
return filePath.indexOf(".")>=0;
}
/**
* 创建文件
* @param bytes
* @param filePath 文件全路径
*/
public static void writeAllBytes(byte[] bytes,String filePath){
if(bytes == null || bytes.length<=0 || filePath == null || "".equals(filePath.trim())){
return;
}
OutputStream outputStream = null;
String[] split = filePath.split("/");
String fileName = split[split.length-1];
String directoryPath =filePath.substring(0, filePath.lastIndexOf("/")) ;
if(!isDirectory(directoryPath)){
createDirectories(directoryPath);
}
filePath = combine(directoryPath,fileName);
try {
outputStream = new FileOutputStream(filePath);
outputStream.write(bytes);
} catch (Exception e) {
e.printStackTrace();
}finally {
if(outputStream != null){
try {
outputStream.flush();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
*
* @param file 读取文件的全部字节
* @return
*/
public static byte[] readAllBytes(File file){
byte[] result = null;
if(file.isFile()){
try {
result = readAllBytes(new FileInputStream(file));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
return result;
}
/**
*
* @param inStream 读取文件的全部字节
* @return
*/
public static byte[] readAllBytes(InputStream inStream) {
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
byte[] buff = new byte[100];
byte[] result = null;
int rc = 0;
try {
while ((rc = inStream.read(buff, 0, 100)) > 0) {
swapStream.write(buff, 0, rc);
}
result = swapStream.toByteArray();
} catch (IOException e) {
e.printStackTrace();
}finally {
try {
swapStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
/**
*
* @param file
* @return
*/
public static String getSuffix(File file) {
if (file != null && file.isFile())
return file.getName().substring(file.getName().lastIndexOf(".") + 1);
else
return null;
}
/**
* 读取一个文本文件的全部字符
*
* @param path
* @return
*/
public static String readAllTxt(String path) {
StringBuilder stringBuilder = new StringBuilder();
File file = new File(path);
if (file.isFile() && file.exists()) {
InputStreamReader read = null;
try {
read = new InputStreamReader(new FileInputStream(file), "utf8");
BufferedReader bufferedReader = new BufferedReader(read);
String lineTxt = null;
while ((lineTxt = bufferedReader.readLine()) != null) {
stringBuilder.append(lineTxt + "
");
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (read != null)
try {
read.close();
} catch (IOException e) {
read = null;
}
}
}
return stringBuilder.toString();
}
public static List<String> readTxtByLine(String path) throws Exception {
List<String> list = new ArrayList<String>();
File file = new File(path);
if (file.isFile() && file.exists()) {
InputStreamReader read = new InputStreamReader(new FileInputStream(file), "utf-8");
BufferedReader bufferedReader = new BufferedReader(read);
String lineTxt = null;
while ((lineTxt = bufferedReader.readLine()) != null) {
list.add(lineTxt);
}
read.close();
}
return list;
}
public static void writeTxt(List<String> info, String fileName) {
writeTxt(info.toArray(new String[info.size()]), fileName);
}
/**
*
* @param info
* @param fileName
*/
public static void writeTxt(String[] info, String fileName) {
FileWriter writer = null;
try {
writer = new FileWriter(fileName, true);
for (String str : info) {
writer.write(str);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
writer.flush();
writer.close();
} catch (IOException e) {
writer = null;
e.printStackTrace();
}
}
}
/**
*
* @param info
* 把字符串写入文件
* @param fileName
* 文件全路径名
*/
public static void writeAllTxt(String info, String fileName) {
FileWriter writer = null;
try {
writer = new FileWriter(fileName);
writer.write(info);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
writer.flush();
writer.close();
} catch (IOException e) {
writer = null;
e.printStackTrace();
}
}
}
/**
*
* @param info
* 把字符串写入文件
* @param fileName
* 文件全路径名
*/
public static boolean writeAllTxt2(String info, String fileName) {
FileWriter writer = null;
boolean isTrue = true;
try {
writer = new FileWriter(fileName);
writer.write(info);
} catch (Exception e) {
e.printStackTrace();
isTrue = false;
} finally {
try {
writer.flush();
writer.close();
} catch (IOException e) {
writer = null;
e.printStackTrace();
}
}
return isTrue;
}
/**
* 复制文件
* @param oldFilePath
* 文件路径
* @param newFilePath
* 新文件的path
* @return
*/
public static boolean copyer(String oldFilePath, String newFilePath) {
return copyer(oldFilePath, newFilePath, 10);
}
/**
* 复制文件
* @param oldFilePath
* 文件路径
* @param newFilePath
* 新文件的path
* @param bufferSize 缓冲大小默认10MB
* @return
*/
public static boolean copyer(String oldFilePath, String newFilePath, int bufferSize) {
if (oldFilePath == null || "".equals(oldFilePath.trim()))
return false;
boolean flag = true;
try {
InputStream inputStream = new FileInputStream(oldFilePath);
flag = copyer(inputStream, newFilePath, bufferSize);
} catch (FileNotFoundException e) {
flag = false;
e.printStackTrace();
}
return flag;
}
/**
* 复制文件
*
* @param inputStream
* 输入流
* @param newFilePath
* 新文件的path
* @return
*/
public static boolean copyer(InputStream inputStream, String newFilePath) {
return copyer(inputStream, newFilePath, 10);
}
/**
* 复制文件
*
* @param inputStream
* 输入流
* @param newFilePath
* 新文件的path
* @return
*/
public static boolean copyer(InputStream inputStream, String newFilePath, int bufferSize) {
if (inputStream == null || newFilePath == null || "".equals(newFilePath.trim()) || bufferSize <= 0)
return false;
boolean flag = true;
OutputStream outputStream = null;
try {
outputStream = new FileOutputStream(newFilePath);
byte[] buffer = new byte[1024 * 1024 * bufferSize];
int byteread = 0;
while ((byteread = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, byteread);
}
} catch (Exception e) {
flag = false;
e.printStackTrace();
} finally {
try {
outputStream.flush();
if (inputStream != null)
inputStream.close();
if (outputStream != null)
outputStream.close();
} catch (IOException e) {
inputStream = null;
outputStream = null;
e.printStackTrace();
}
}
return flag;
}
/**
* 保存图片的方法
*/
public static boolean savaImage(BufferedImage image,String suffxi,String path){
if(image==null&&"".equals(suffxi)&&suffxi==null&&path==null&&"".equals(path)){
return false;
}
String dirPath=path.substring(0, path.lastIndexOf("/"));
boolean flag = true;
File f = new File(dirPath);
if(!f.exists()){
f.mkdirs();
}
try {
flag = ImageIO.write(image, suffxi, new File(path));
} catch (IOException e) {
flag=false;
e.printStackTrace();
}
return flag;
}
/**
* 保存excle的方法
*/
public static boolean savaExcel(MultipartFile item,String path){
InputStream is=null;
FileOutputStream fos=null;
if(item==null&&"".equals(path)&&path==null){
return false;
}
String dirPath=path.substring(0, path.lastIndexOf("/"));
boolean flag = true;
File f = new File(dirPath);
if(!f.exists()){
f.mkdirs();
}
try {
is=item.getInputStream();
fos = new FileOutputStream(path);
byte[] b = new byte[1024];
while((is.read(b)) != -1){
fos.write(b);
}
} catch (IOException e) {
flag=false;
e.printStackTrace();
}finally {
try {
if(is!=null){
is.close();
}
if(fos!=null){
fos.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return flag;
}
/**
*
* @param folderPath
* 文件夹目录（输入目录）
* @param newFolderPath
* 文件夹目录（输出目录）
* @param deep
* 是否查找子文件夹
* @param fileNames
* 文件名
* @return 成功复制的文件的文件名集合
*/
public static List<String> copyerFromFolder(String folderPath, String newFolderPath, boolean deep,
String... fileNames) {
if (folderPath == null || fileNames == null || "".equals(folderPath.trim()) || fileNames.length <= 0)
return null;
List<String> successFileName = new ArrayList<String>();
File folder = new File(folderPath);
if (folder.isDirectory()) {
File[] listFiles = folder.listFiles();
for (File file : listFiles) {
if (file.isFile()) {
for (String fileName : fileNames) {
if (fileName.toLowerCase().equals(file.getName().toLowerCase())) {
if (copyer(combine(folderPath, fileName), combine(newFolderPath, fileName)))
successFileName.add(fileName);
}
}
} else if (file.isDirectory() && deep) {
copyerFromFolder(file.getPath(), newFolderPath, deep, fileNames);
}
}
}
return successFileName;
}
/**
*
* @param folderPath
* 文件夹目录（输入目录）
* @param newFolderPath
* 文件夹目录（输出目录）
* @param deep
* 是否查找子文件夹
* @param fileNames
* 文件名
* @return 成功复制的文件的文件名集合
*/
public static List<String> copyerFromFolder(String folderPath, String newFolderPath, boolean deep,
List<String> fileNames) {
return copyerFromFolder(folderPath, newFolderPath, deep, fileNames.toArray(new String[fileNames.size()]));
}
/**
*
* @param folderPath
* 文件夹目录（输入目录）
* @param newFolderPath
* 文件夹目录（输出目录）
* @param fileNames
* 文件名
* @return 成功复制的文件的文件名集合
*/
public static List<String> copyerFromFolder(String folderPath, String newFolderPath, List<String> fileNames) {
return copyerFromFolder(folderPath, newFolderPath, false, fileNames.toArray(new String[fileNames.size()]));
}
/**
* 拼接一个文件路径
*
* @param
* @return 文件全路径
*/
public static String combine(String... strings) {
if (strings == null || strings.length <= 0)
return null;
for (int i = 0; i < strings.length; i++) {
strings[i] = repalceLine(strings[i]);
}
return null;
}
/**
* 去掉字符串前后"" 或者 "/"
* @param str
*
* @return
*/
public static String repalceLine(String str) {
String suffix = str.substring(str.length() - 1, str.length());
String prefix = str.substring(0, 1);
if (suffix.equals("\") || suffix.equals("/")) {
str = str.substring(0, str.length() - 1);
}
if (prefix.equals("\") || prefix.equals("/")) {
str = str.substring(1, str.length());
}
return str;
}
/**
* 读取properties文件
*
* @param path
* properties路径
* @return map
*/
public static Map<Object, Object> readProperties(String path) {
if (!new File(path).isFile())
return null;
Map<Object, Object> properties = null;
try {
InputStream inputStream = new FileInputStream(path);
properties = readProperties(inputStream);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return properties;
}
/**
* 读取properties文件
*
* @param inputStream
* @return Map
*/
public static Map<Object, Object> readProperties(InputStream inputStream) {
if (inputStream == null)
return null;
Properties properties = new Properties();
try {
properties.load(inputStream);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
inputStream.close();
} catch (IOException e) {
inputStream = null;
e.printStackTrace();
}
}
return properties;
}
public static BufferedImage formatImage(InputStream inputStream,Integer preWidth,Integer preHeight){
Image[] array = new Image[10];
BufferedImage bi=null;
BufferedImage newBI=null;
try {
bi=ImageIO.read(inputStream);
double width=bi.getWidth();
double height=bi.getHeight();
double proportion=(width/preWidth>=height/preHeight)?(width/preWidth):(height/preHeight);
int newWidth=(int) (width/proportion);
int newHeight=(int) (height/proportion);
newBI = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_BGR);
array[0]=newBI;
Graphics graphics = newBI.createGraphics();
graphics.drawImage(bi, 0, 0, newWidth, newHeight, null);
return newBI;
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return newBI;
}
public static BufferedImage formatImage(BufferedImage bi,Integer preWidth,Integer preHeight){
Image[] array = new Image[10];
BufferedImage newBI=null;
double width=bi.getWidth();
double height=bi.getHeight();
double proportion=(width/preWidth>=height/preHeight)?(width/preWidth):(height/preHeight);
int newWidth=(int) (width/proportion);
int newHeight=(int) (height/proportion);
newBI = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_BGR);
array[0]=newBI;
Graphics graphics = newBI.createGraphics();
graphics.drawImage(bi, 0, 0, newWidth, newHeight, null);
return newBI;
}
public static String getTimeStamp(){
long time=new Date().getTime();
String str=time+"_";
return str;
}
public static String getZoomTimeStamp(){
long time=new Date().getTime();
String str="small_"+time+"_";
return str;
}
/*
* Java文件操作 获取文件扩展名
*
*/
public static String getExtensionName(String filename) {
if ((filename != null) && (filename.length() > 0)) {
int dot = filename.lastIndexOf('.');
if ((dot >-1) && (dot < (filename.length() - 1))) {
return filename.substring(dot + 1);
}
}
return filename;
}
/**
* 删除文件
* @param filePath
* @return
*/
public static boolean delFile(String filePath){
File ff = new File(filePath);
if(ff.exists()){
ff.delete();
}
return true;
}
/**
* 文件是否存在
* @param filePath
* @return
*/
public static boolean hisExist(String filePath){
File ff = new File(filePath);
return ff.exists();
}
//删除指定文件夹下所有文件
//param path 文件夹完整绝对路径
public static void delFolder(String folderPath) {
try {
delAllFile(folderPath); //删除完里面所有内容
String filePath = folderPath;
filePath = filePath.toString();
java.io.File myFilePath = new java.io.File(filePath);
myFilePath.delete(); //删除空文件夹
} catch (Exception e) {
e.printStackTrace();
}
}
// public static void main(String[] args) {
// String path="E:/gpjtestdata/uploads/temp";
// delAllFile(path);
// }
//删除指定文件夹下所有文件
//param path 文件夹完整绝对路径
public static boolean delAllFile(String path) {
boolean flag = false;
File file = new File(path);
if (!file.exists()) {
return flag;
}
if (!file.isDirectory()) {
return flag;
}
String[] tempList = file.list();
File temp = null;
for (int i = 0; i < tempList.length; i++) {
if (path.endsWith(File.separator)) {
temp = new File(path + tempList[i]);
} else {
temp = new File(path + File.separator + tempList[i]);
}
if (temp.isFile()) {
temp.delete();
}
if (temp.isDirectory()) {
delAllFile(path + "/" + tempList[i]);//先删除文件夹里面的文件
delFolder(path + "/" + tempList[i]);//再删除空文件夹
flag = true;
}
}
return flag;
}
public static void main(String[] args) {
createDirectories("e:\1\1.txt");
}
}
// 批量导入
@RequestMapping("/all")
public @ResponseBody List<List<String>> importExecl(HttpServletRequest request){
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
List<MultipartFile> fileList = multipartRequest.getFiles("file");
List<StudentBean> allStudent = new ArrayList<StudentBean>();
MultipartFile myfile = null;
myfile = fileList.get(0);
String FileName = myfile.getOriginalFilename();
String fileFolder = "G:/temp/";
String pathName=fileFolder+FileName;
try {
//先把传过来的文件放在临时文件夹下，然后从文件夹中取出
InputStream inputStream = myfile.getInputStream();
IoUtils.copyer(inputStream, pathName);
System.out.println(pathName);
System.out.println("=============================1");
List<List<String>> studentList = excelUtil.importExecl(pathName);
System.out.println(studentList);
if(studentList != null){
for(int i = 0;i<studentList.size();i++){
StudentBean student = new StudentBean();
List<String> students = studentList.get(i);
student.setName(students.get(0));
student.setAge(students.get(1));
allStudent.add(student);
}
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
studentServiceImpl.insertBatchStudent(allStudent);
return null;
}
要用到的jar包
