java实现读取、删除文件夹下的文件

java实现读取、删除文件夹下的文件

java实现读取、删除文件夹下的文件

package test.com;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

public class ReadFile {

public ReadFile() {

}

/**

* 读取某个文件夹下的所有文件

*/

public static boolean readfile(String filepath) throws FileNotFoundException, IOException {

try {

File file = new File(filepath);

if (!file.isDirectory()) {

// System.out.println("文件");

// System.out.println("path=" + file.getPath());

// System.out.println("absolutepath=" + file.getAbsolutePath());

System.out.println(file.getName());

} else if (file.isDirectory()) {

String[] filelist = file.list();

for (int i = 0; i < filelist.length; i++) {

File readfile = new File(filepath + "\\" + filelist[i]);

if (!readfile.isDirectory()) {

// System.out.println("path=" + readfile.getPath());

// System.out.println("absolutepath="

// + readfile.getAbsolutePath());

System.out.println(readfile.getName());

JySwgCzQ } else if (readfile.isDirectory()) {

readfile(filepath + "\\" + filelist[i]);

}

}

}

} catch (FileNotFoundException e) {

System.out.println("readfile() Exception:" + e.getMessage());

}

return true;

}

/**

* 删除某个文件夹下的所有文件夹和文件

*/

/*public static boolean deletefile(String delpath)

throws FileNotFoundException, IOException {

try {

File file = new File(delpath);

if (!file.isDirectory()) {

System.out.println("1");

file.delete();

} else if (file.isDirectory()) {

System.out.println("2");

String[] filelist = file.list();

for (int i = 0; i < filelist.length; i++) {

File delfile = new File(delpath + "\\" + filelist[i]);

if (!delfile.isDirectory()) {

System.out.println("path=" + delfile.getPath());

System.out.println("absolutepath="

+ delfile.getAbsolutePath());

System.out.println("name=" + delfile.getName());

delfile.delete();

System.out.println("删除文件成功");

} else if (delfile.isDirectory()) {

deletefile(delpath + "\\" + filelist[i]);

}

}

file.delete();

}

} catch (FileNotFoundException e) {

System.out.println("deletefile() Exception:" + e.getMessage());

}

return true;

}*/

public static void main(String[] args) {

try {

readfile("C:\\Users\\SW\\Desktop\\SKJ_H25補正\\004_RCAG\\003_SKJ");

// deletefile("D:/file");

} catch (FileNotFoundException ex) {

} catch (IOException ex) {

}

System.out.println("ok");

}

}

方法二：

package otherstudy;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

/**

* @ClassName: TestReadFile

* @CreateTime: Aug 1, 2014 11:42:44 AM

* @Author: mayi

* @Description: 读取和删除文件夹下的所有文件

*

*/

public class TestReadFile {

/**

* 获取工程的WebRoot的绝对路径

* @return

*/

String getProjectPath(){

//得到形如"/d:/${workspace}/${projectName}/WebRoot/WEB-INF/classes/"的 路径

String path=this.getClass().getResource("/").getPath();

//从路径字符串中取出工程路径

path=path.substring(1, path.indexOf("WEB-INF/classes"));

System.out.println("工程路径："+path);

return path;

}

/**

* @param args

*/

public static void main(String[] args) {

TestReadFilehttp:// trf=new TestReadFile();

String xmlPath = trf.getProjectPath()+ "testDocs";

try {

readAllFile(xmlPath);

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

/**

* 读取指定路径文件夹下的所有文件

* @param filepath

* @return

* @throws FileNotFoundException

* @throws IOException

*/

public static boolean readAllFile(String filepath)

throws FileNotFoundException, IOException {

try {

File file = new File(filepath);

if (!file.isDirectory()) {

System.out.println("\n文件信息：");

System.out.println("\t相对路径=" + file.getPath());

System.out.println("\t绝对路径=" + file.getAbsolutePath());

System.out.println("\t文件全名=" + file.getName());

} else if (file.isDirectory()) {

System.out.println("\n文件夹内文件列表信息：");

File[] fileList = file.listFiles();

for (int i = 0; i < fileList.length; i++) {

File readfile = fileList[i];

if (!readfile.isDirectory()) {

System.out.println("\n\t相对路径=" + readfile.getPath());

System.out.println("\t绝对路径=" + readfile.getAbsolutePath());

System.out.println("\t文件全名=" + readfile.getName());

} else if (readfile.isDirectory()) {

readAllFile(fileList[i].getPath());

}

}

}

} catch (FileNotFoundException e) {

System.out.println("readfile() Exception:" + e.getMessage());

}

return true;

}

/**

* 删除某个文件夹下的所有文件夹和文件

* @param delpath

* @return

* @throws FileNotFoundException

* @throws IOException

*/

public static boolean deleteFile(String delpath)

throws FileNotFoundException, IOException {

try {

File file = new File(delpath);

if (!file.isDirectory()) {

System.out.println("1");

file.delete();

} else if (file.isDirectory()) {

System.out.println("2");

File[] fileList = file.listFiles();

for (int i = 0; i < fileList.length; i++) {

File delfile = fileList[i];

if (!delfile.isDirectory()) {

System.out.println("相对路径=" + delfile.getPath());

System.out.println("绝对路径=" + delfile.getAbsolutePath());

System.out.println("文件全名=" + delfile.getName());

delfile.delete();

System.out.println("删除文件成功");

} else if (delfile.isDirectory()) {

deleteFile(fileList[i].getPath());

}

}

file.delete();

}

} catch (FileNotFoundException e) {

System.out.println("deletefile() Exception:" + e.getMessage());

}

return true;

}

}

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