/**
* 删除文件
*
* @param comp
* @param filename 如:ctt.txt
* @throws Exception
*/
public static void deleteFile(CompanyInfo comp, String filename) {
String path = Global.getProperty(Constant.system_company_site_dir)
+ comp.getDomain(); // 取得静态工程的路径并加上对应的公司2级域名
String oldFileStr = path + filename; //得到文件的全路径
File f = new File(oldFileStr); //新建一个File文件,路径塞进去
try {
f.delete(); //调用方法,直接删除
} catch (Exception ex) {
ex.printStackTrace();
} }
java中删除目录事先要删除目录下的文件或子目录
- public void del(String filepath) throws IOException{
- File f = new File(filepath);//定义文件路径
- if(f.exists() && f.isDirectory()){//判断是文件还是目录
- if(f.listFiles().length==0){//若目录下没有文件则直接删除
- f.delete();
- }else{//若有则把文件放进数组,并判断是否有下级目录
- File delFile[]=f.listFiles();
- int i =f.listFiles().length;
- for(int j=0;j<i;j++){
- if(delFile[j].isDirectory()){
- del(delFile[j].getAbsolutePath());//递归调用del方法并取得子目录路径
- }
- delFile[j].delete();//删除文件
- }
- }
- }
- }
apache开源的包中都包含了这些FileUtils,具体请参考API
File f = new File("D:\\Project Document\\商盟网站p1.01\\bb");
org.apache.commons.io.FileUtils.deleteDirectory(f);//删除目录
org.apache.tools.ant.util.FileUtils.delete(f);//删除文件
- import java.io.*;
- public class FileOperate {
- public FileOperate() {
- }
- /**
- * 新建目录
- * @param folderPath String 如 c:/fqf
- * @return boolean
- */
- public void newFolder(String folderPath) {
- try {
- String filePath = folderPath;
- filePath = filePath.toString();
- java.io.File myFilePath = new java.io.File(filePath);
- if (!myFilePath.exists()) {
- myFilePath.mkdir();
- }
- }
- catch (Exception e) {
- System.out.println("新建目录操作出错");
- e.printStackTrace();
- }
- }
- /**
- * 新建文件
- * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
- * @param fileContent String 文件内容
- * @return boolean
- */
- public void newFile(String filePathAndName, String fileContent) {
- try {
- String filePath = filePathAndName;
- filePath = filePath.toString();
- File myFilePath = new File(filePath);
- if (!myFilePath.exists()) {
- myFilePath.createNewFile();
- }
- FileWriter resultFile = new FileWriter(myFilePath);
- PrintWriter myFile = new PrintWriter(resultFile);
- String strContent = fileContent;
- myFile.println(strContent);
- resultFile.close();
- }
- catch (Exception e) {
- System.out.println("新建目录操作出错");
- e.printStackTrace();
- }
- }
- /**
- * 删除文件
- * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
- * @param fileContent String
- * @return boolean
- */
- public void delFile(String filePathAndName) {
- try {
- String filePath = filePathAndName;
- filePath = filePath.toString();
- java.io.File myDelFile = new java.io.File(filePath);
- myDelFile.delete();
- }
- catch (Exception e) {
- System.out.println("删除文件操作出错");
- e.printStackTrace();
- }
- }
- /**
- * 删除文件夹
- * @param filePathAndName String 文件夹路径及名称 如c:/fqf
- * @param fileContent String
- * @return boolean
- */
- public 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) {
- System.out.println("删除文件夹操作出错");
- e.printStackTrace();
- }
- }
- /**
- * 删除文件夹里面的所有文件
- * @param path String 文件夹路径 如 c:/fqf
- */
- public void delAllFile(String path) {
- File file = new File(path);
- if (!file.exists()) {
- return;
- }
- if (!file.isDirectory()) {
- return;
- }
- 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
- }
- }
- }
- /**
- * 复制单个文件
- * @param oldPath String 原文件路径 如:c:/fqf.txt
- * @param newPath String 复制后路径 如:f:/fqf.txt
- * @return boolean
- */
- public void copyFile(String oldPath, String newPath) {
- try {
- int bytesum = 0;
- int byteread = 0;
- File oldfile = new File(oldPath);
- if (oldfile.exists()) { //文件存在时
- InputStream inStream = new FileInputStream(oldPath); //读入原文件
- FileOutputStream fs = new FileOutputStream(newPath);
- byte[] buffer = new byte[1444];
- int length;
- while ( (byteread = inStream.read(buffer)) != -1) {
- bytesum += byteread; //字节数 文件大小
- System.out.println(bytesum);
- fs.write(buffer, 0, byteread);
- }
- inStream.close();
- }
- }
- catch (Exception e) {
- System.out.println("复制单个文件操作出错");
- e.printStackTrace();
- }
- }
- /**
- * 复制整个文件夹内容
- * @param oldPath String 原文件路径 如:c:/fqf
- * @param newPath String 复制后路径 如:f:/fqf/ff
- * @return boolean
- */
- public void copyFolder(String oldPath, String newPath) {
- try {
- (new File(newPath)).mkdirs(); //如果文件夹不存在 则建立新文件夹
- File a=new File(oldPath);
- String[] file=a.list();
- File temp=null;
- for (int i = 0; i < file.length; i++) {
- if(oldPath.endsWith(File.separator)){
- temp=new File(oldPath+file[i]);
- }
- else{
- temp=new File(oldPath+File.separator+file[i]);
- }
- if(temp.isFile()){
- FileInputStream input = new FileInputStream(temp);
- FileOutputStream output = new FileOutputStream(newPath + "/" +
- (temp.getName()).toString());
- byte[] b = new byte[1024 * 5];
- int len;
- while ( (len = input.read(b)) != -1) {
- output.write(b, 0, len);
- }
- output.flush();
- output.close();
- input.close();
- }
- if(temp.isDirectory()){//如果是子文件夹
- copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
- }
- }
- }
- catch (Exception e) {
- System.out.println("复制整个文件夹内容操作出错");
- e.printStackTrace();
- }
- }
- /**
- * 移动文件到指定目录
- * @param oldPath String 如:c:/fqf.txt
- * @param newPath String 如:d:/fqf.txt
- */
- public void moveFile(String oldPath, String newPath) {
- copyFile(oldPath, newPath);
- delFile(oldPath);
- }
- /**
- * 移动文件到指定目录
- * @param oldPath String 如:c:/fqf.txt
- * @param newPath String 如:d:/fqf.txt
- */
- public void moveFolder(String oldPath, String newPath) {
- copyFolder(oldPath, newPath);
- delFolder(oldPath);
- }
- }