java实现读取、删除文件夹下的文件
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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());
} 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) {
testreadfile 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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