我确实有一些序列化代码不起作用。我试图在if语句中插入CanRead()和CanWrite(),这表明他们没有读写权限。我也尝试将'java.io.File.setReadable'和'java.io.File.setWriteable'插入为true,但仍然会抛出错误。IOException在java.io.File.createNewFile();
的代码如下:
public static void save(Object obj, String filename) throws FileNotFoundException, IOException
{
File f = new File("c:/DatoChecker/" + filename);
File dir = new File("c:/DatoChecker");
if(!dir.exists())
dir.mkdirs();
f.setReadable(true);
f.setWritable(true);
if(!f.exists())
{
f.createNewFile();
}
FileOutputStream op = null;
ObjectOutputStream objectStream = null;
op = new FileOutputStream(f);
objectStream = new ObjectOutputStream(op);
objectStream.writeObject(obj);
objectStream.close();
}
public static Object fetch(String filename) throws FileNotFoundException, IOException, ClassNotFoundException
{
File f = new File("c:/DatoChecker" + filename);
File dir = new File("c:/DatoChecker");
if(!dir.exists())
dir.mkdirs();
f.setReadable(true);
f.setWritable(true);
if(!f.exists())
{
f.createNewFile();
}
FileInputStream ip = null;
ObjectInputStream objectStream = null;
Object obj = null;
ip = new FileInputStream(f);
objectStream = new ObjectInputStream(ip);
obj = objectStream.readObject();
ip.close();
objectStream.close();
return obj;
}
堆栈跟踪:
SEVERE: null
java.io.IOException: access denied
at java.io.WinNTFileSystem.createFileExclusively(Native Method)
at java.io.File.createNewFile(File.java:947)
at com.check.me.Serialization.fetch(Seralization.java:39)
at com.check.me.GoodsList.load(GoodsList.java:82)
at com.check.me.START.main(START.java:22)
的一个用于保存从商品详细congruet(只保存而不是负载)和最多却是相当长的时间在下面,所以我现在就离开它。
感谢您的帮助提前
Highace2
http://stackoverflow.com/a/23697734/715269 – Gangnus 2014-05-16 14:24:12
@Gangnus你可能已经注意到了,这个问题已经被回答了。它不是如何创造的,而是它指定的范围。基本上选择正确的目录。 – Highace2 2014-05-17 20:46:58
问题是,它是重复的问题。它必须关闭,评论,但没有回答。 – Gangnus 2014-05-19 08:22:20