我正在尝试用Java构建自动备份脚本。虽然我不太擅长Java,但是事实证明这很困难。
这是我的代码:
package javatest;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class Main {
public static void main(String[] args) throws Exception {
String path = "/mnt/192.168.1.89";
String destFile = "/home/scott/backup.zip";
zip(path,destFile);
}
private static void zip(String src, String destFile) throws Exception
{
FileOutputStream fileWriter = new FileOutputStream(destFile);
ZipOutputStream zip = new ZipOutputStream(fileWriter);
addFolderToZip("", src, zip);
zip.flush();
zip.close();
}
private static void addFolderToZip(String path, String srcFolder, ZipOutputStream zip) throws Exception
{
File folder = new File(srcFolder);
for (String filename : folder.list())
{
if (path.equals("")) {
addFileToZip(folder.getName(), srcFolder + "/" + filename, zip);
} else {
addFileToZip(path + "/" + folder.getName(), srcFolder + "/" + filename, zip);
}
}
}
private static void addFileToZip(String path, String srcFile, ZipOutputStream zip) throws Exception
{
File folder = new File(srcFile);
if (folder.isDirectory()) {
addFolderToZip(path,srcFile,zip);
} else {
byte[] buf = new byte[1024];
int len;
FileInputStream in = new FileInputStream(srcFile);
zip.putNextEntry(new ZipEntry(path + "/" + folder.getName()));
while((len = in.read(buf)) > 0)
{
zip.write(buf,0,len);
}
}
}
}
这是一个异常(exception):
Exception in thread "main" java.io.FileNotFoundException: FILENAME (Too many open files)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at java.io.FileInputStream.<init>(FileInputStream.java:66)
at javatest.Main.addFileToZip(Main.java:53)
at javatest.Main.addFolderToZip(Main.java:37)
at javatest.Main.addFileToZip(Main.java:47)
at javatest.Main.addFolderToZip(Main.java:37)
at javatest.Main.addFileToZip(Main.java:47)
at javatest.Main.addFolderToZip(Main.java:37)
at javatest.Main.addFileToZip(Main.java:47)
at javatest.Main.addFolderToZip(Main.java:37)
at javatest.Main.addFileToZip(Main.java:47)
at javatest.Main.addFolderToZip(Main.java:37)
at javatest.Main.addFileToZip(Main.java:47)
at javatest.Main.addFolderToZip(Main.java:37)
at javatest.Main.addFileToZip(Main.java:47)
at javatest.Main.addFolderToZip(Main.java:37)
at javatest.Main.addFileToZip(Main.java:47)
at javatest.Main.addFolderToZip(Main.java:35)
at javatest.Main.zip(Main.java:22)
at javatest.Main.main(Main.java:14)
Java Result: 1
最佳答案
确保您都对close()
都进行了编码:
ZipOutputStream
(您正确地这样做了)和FileInputStream
目前,您的信息流中有许多打开的连接。
在
addFolderToZip()
方法中,像这样关闭最后的FileInputStream
:try {
in.close();
} catch (IOException e) {
//Log exception
}