由于操作系统限制,文件后缀名只能为3位,如何让虚拟机找到3位后缀名的类?

[bhjsj]

我想象中这个应该自己写类加载器来实现,这种思路是否可以解决这个问题?有做过这方面需求的大侠来肯定一下吗?

[believefym]

关注。。。

[bhjsj]

自己顶啦.

[whyxx]

完全是可以的,以下是在common.FileSystemClassLoader实现的主方法：
请注意String pathName = currentRoot + File.separatorChar+ className.replace('.', File.separatorChar) + ".class";这句话.

public byte[] findClassBytes(String className) {
try {
String pathName = currentRoot + File.separatorChar
+ className.replace('.', File.separatorChar)
+ ".class";
FileInputStream inFile = new FileInputStream(pathName);
byte[] classBytes = new byte[inFile.available()];
inFile.read(classBytes);
return classBytes;
} catch (java.io.IOException ioEx) {
return null;
}
}

public Class findClass(String name) throws ClassNotFoundException {
byte[] classBytes = findClassBytes(name);
if (classBytes == null) {
throw new ClassNotFoundException();
} else {
return defineClass(name, classBytes, 0, classBytes.length);
}
}

public Class findClass(String name, byte[] classBytes)
throws ClassNotFoundException {
if (classBytes == null) {
throw new ClassNotFoundException("(classBytes==null)");
} else {
return defineClass(name, classBytes, 0, classBytes.length);
}
}

public void execute(String codeName, byte[] code) {
Class klass = null;
try {
klass = findClass(codeName, code);
TaskIntf task = (TaskIntf) klass.newInstance();
task.execute();
} catch (Exception exception) {
exception.printStackTrace();
}
}