com.github.javahao.util.FileUtil Maven / Gradle / Ivy
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package com.github.javahao.util;
import cn.org.rapid_framework.util.ObjectUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.io.DefaultResourceLoader;
import java.io.*;
import java.math.BigInteger;
import java.net.URL;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.*;
public class FileUtil {
private static final transient Log log = LogFactory.getLog(FileUtil.class);
/**
* 判断是否为文件，如果path为null，则返回false
*
* @param path 文件路径
* @return 如果为文件true
*/
public static boolean isFile(String path) {
return (path == null) ? false : new File(path).isDirectory();
}
/**
* 判断是否为文件，如果file为null，则返回false
*
* @param file 文件
* @return 如果为文件true
*/
public static boolean isFile(File file) {
return (file == null) ? false : file.isDirectory();
}
/**
* 如果指定路径不存在，则创建
* @param path 路径
*/
public static void fileIsExists(String path){
File file = new File(path);
if(!file.exists()){
file.mkdirs();
}
}
private static List fileList = new ArrayList();
/**
* 读取txt文件，返回读取之后的内容
* @param path 路径
* @return 读取结果
*/
public static List readTxt(String path){
List result = new ArrayList();
BufferedReader bufferedReader =null;
try {
bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(path),"UTF-8"));
String lineTxt = null;
while(ObjectUtils.isNotEmpty((lineTxt = bufferedReader.readLine()))){
result.add(lineTxt);
}
} catch (Exception e) {
System.out.println(e.getMessage());
}finally{
try {
bufferedReader.close();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
return result;
}
/**
* 将内容输出到文件
* @param path 路径
* @param value 输出值
* @throws Exception 输出异常
*/
public static void printTxtToFile(String path,String value) throws Exception{
File file = new File(path);
if(!file.getParentFile().exists()){
file.getParentFile().mkdirs();
}
Writer writer = new OutputStreamWriter(new FileOutputStream(file, false), "UTF-8");
writer.write(value);
writer.close();
}
/**
* 遍历指定文件夹下的文件名并用关键字连接起来
* @param path 路径
* @param join 连接分割
* @return 返回结果
*/
public static String joinFilName(String path,String join){
StringBuffer sb = new StringBuffer();
File files = new File(path);
String[] filess = files.list();
//遍历要导入引入的包
for (int i = 0; i < filess.length; i++) {
sb.append(path);
sb.append(filess[i]);
sb.append(join);
}
return sb.toString();
}
/**
* 获取工程路径
* @return 获取项目路径
*/
public static String getProjectPath(){
String projectPath = "";
try {
File file = new DefaultResourceLoader().getResource("").getFile();
if (file != null){
while(true){
File f = new File(org.apache.commons.lang3.StringUtils.join(new Object[]{file.getPath() , File.separator , "src" , File.separator , "main"}));
if (f == null || f.exists()){
break;
}
if (file.getParentFile() != null){
file = file.getParentFile();
}else{
break;
}
}
projectPath = file.toString();
}
} catch (IOException e) {
e.printStackTrace();
}
return projectPath;
}
/**
* 获取项目的编译路径
* @return 获取项目路径
*/
public static String getProjectClassPath(){
try {
return new DefaultResourceLoader().getResource("").getFile().getPath();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* 删除指定路径下面所有文件
* @param path 路径
* @throws Exception 删除异常
*/
public static void deleteFileByFolder(String path) throws Exception{
File file = new File(path);
deleteFileUtil(file);
for(int i = fileList.size()-1 ; i >=0 ; i--){
fileList.get(i).delete();
}
}
/**
* 删除指定文件
* @param path 路径
* @throws Exception 删除异常
*/
public static void deleteFileByPath(String path) throws Exception{
File file = new File(path);
file.delete();
}
/**
* 删除文件辅助方法
* @param file 要删除的文件
* @throws Exception 删除异常
*/
private static void deleteFileUtil(File file)throws Exception{
File[] childFile = file.listFiles();
fileList.addAll(Arrays.asList(childFile));
for(File f : childFile){
if(f.isDirectory())
deleteFileUtil(f);
}
}
static BufferedInputStream bis = null;
static BufferedOutputStream bos = null;
/**
* 复制指定路径的路径文件到指定路径
* @param sourcePath 原路径
* @param toPath 目标路径
* @param fileName 文件名称
* @return 结果
*/
public static boolean copyFileToPath(String sourcePath,String toPath,String fileName){
File inputFile = new File(sourcePath);
File outPath = new File(toPath);
File outFile = new File(toPath+fileName);
if(!outPath.getParentFile().exists())
outPath.getParentFile().mkdirs();
byte[] b = new byte[1024];
int len;
try {
bis = new BufferedInputStream(new FileInputStream(inputFile));
bos = new BufferedOutputStream(new FileOutputStream(outFile));
while((len = bis.read(b))!=-1){
bos.write(b,0,len);
}
System.out.println("复制完成"+fileName+"！");
} catch (FileNotFoundException e) {
System.out.println("文件未找到！请确定文件路径正确！");
return false;
} catch (IOException e) {
System.out.println("复制文件失败！");
return false;
}
finally{
closeAll();
}
return true;
}
/**
* 关闭输入输出流
*/
private static void closeAll(){
try {
if(ObjectUtils.isNotEmpty(bis)&&ObjectUtils.isNotEmpty(bos)){
bis.close();
bos.close();
}
} catch (IOException e) {
System.out.println("文件流关闭失败！");
}
}
public static final String NETWORK="network";
public static final String CLASSPATH="classpath";
/**
* 读取properties文件
* @param path 读取路径
* @param readType 读取方式：NETWORK是通过http://..方式读取，LOCAL是通过本地读取
* @param readKey 要获得指定key对应的值
* @param defaultValue 如果key对应的值不存在获取的默认值
* @return 结果
*/
public static String readProperties(String path,String readType,String readKey,String defaultValue){
Properties properties = readPropertiesUtil(path, readType);
String result = properties.getProperty(readKey, defaultValue);
return result;
}
/**
* 获取properties中的key,value的对应值都取出来
* @param path 路径
* @param readType 读取类型
* @return 结果
*/
public static Map getPropertiesKeyValue(String path,String readType){
Properties properties = readPropertiesUtil(path, readType);
@SuppressWarnings("rawtypes")
Enumeration propNames = properties.propertyNames();
Map keyValue = new HashMap();
while (propNames.hasMoreElements()) {
String key = (String) propNames.nextElement();
String value = properties.getProperty(key);
keyValue.put(key, value);
}
return keyValue;
}
/**
* 读取properties辅助类
* @param path 路径
* @param readType 读取类型
* @return 结果
*/
public static Properties readPropertiesUtil(String path,String readType){
Properties properties = new Properties();
try {
if(NETWORK.equals(readType)){
URL url = new URL(path);
properties.load(url.openStream());
}else if(CLASSPATH.equals(readType)){
InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(path);
properties.load(in);
}else{
properties.load(new FileInputStream(new File(path)));
}
} catch (FileNotFoundException e) {
System.out.println("文件未找到！---------"+e);
} catch (IOException e) {
System.out.println("文件读取异常！---------"+e);
}
return properties;
}
/**
* 计算文件的MD5值
* @param file 检验文件
* @return 结果
*/
public static String getFileMD5(File file) {
if (!file.isFile()) {
return null;
}
MessageDigest digest = null;
FileInputStream in = null;
byte buffer[] = new byte[8192];
int len;
try {
digest =MessageDigest.getInstance("MD5");
in = new FileInputStream(file);
while ((len = in.read(buffer)) != -1) {
digest.update(buffer, 0, len);
}
BigInteger bigInt = new BigInteger(1, digest.digest());
return bigInt.toString(16);
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
try {
in.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* 计算文件的 SHA-1 值
* @param file 校验文件
* @return 结果
*/
public static String getFileSha1(File file) {
if (!file.isFile()) {
return null;
}
MessageDigest digest = null;
FileInputStream in = null;
byte buffer[] = new byte[8192];
int len;
try {
digest =MessageDigest.getInstance("SHA-1");
in = new FileInputStream(file);
while ((len = in.read(buffer)) != -1) {
digest.update(buffer, 0, len);
}
BigInteger bigInt = new BigInteger(1, digest.digest());
return bigInt.toString(16);
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
try {
in.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* MD5签名
* @param content 要签名的内容
* @return 结果
*/
public static String md5(String content){
StringBuffer sb = new StringBuffer();
try{
MessageDigest md5 = MessageDigest.getInstance("MD5");
md5.update(content.getBytes("UTF-8"));
byte[] tmpFolder = md5.digest();
for(int i = 0; i < tmpFolder.length; i++){
sb.append(Integer.toString((tmpFolder[i] & 0xff) + 0x100, 16).substring(1));
}
return sb.toString();
}catch(NoSuchAlgorithmException ex){
log.error("无法生成文件的MD5签名", ex);
return null;
}catch(UnsupportedEncodingException ex){
log.error("无法生成文件的MD5签名", ex);
return null;
}
}
}
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