For better recognition
Anna
########################### test.jsp ##############################
<%@ page language="java" %>
<%@ page import="java.util.*, java.io.*, java.net.*, java.text.*,
java.lang.*, java.util.jar.*, headline.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>
<%
String szPath = "<removedpath>\\MyJsp\\WEB-INF\\plugins";
FileClassLoader c = new FileClassLoader(szPath);
c.load("Hmmm", true);
%>
</body>
</html>
############################ MyInter.java #########################
package headline;
public interface MyInter {
public void Test();
}
########################### FileClassLoader #######################
package headline;
import java.io.*;
public class FileClassLoader extends ClassLoader {
private String basePath;
public FileClassLoader(String basePath) {
this.basePath = basePath;
}
public Class load(String typeName, boolean resolveIt) throws
ClassNotFoundException {
Class result = findLoadedClass(typeName);
if (result != null) {
return result;
}
byte typeData[] = getTypeFromBasePath(typeName);
if (typeData == null) {
throw new ClassNotFoundException();
}
result = defineClass(typeName, typeData, 0,
typeData.length);
if (result == null) {
throw new ClassFormatError();
}
if (resolveIt) {
resolveClass(result);
}
return result;
}
private byte[] getTypeFromBasePath(String typeName) {
FileInputStream fis;
String fileName = basePath + File.separatorChar
+ typeName.replace('.', File.separatorChar)
+ ".class";
try {
fis = new FileInputStream(fileName);
} catch (FileNotFoundException e) {
return null;
}
BufferedInputStream bis =
new BufferedInputStream(fis);
ByteArrayOutputStream out =
new ByteArrayOutputStream();
try {
int c = bis.read();
while (c != -1) {
out.write(c);
c = bis.read();
}
} catch (IOException e) {
return null;
}
return out.toByteArray();
}
}
############################ Hmmm.java ############################
import headline.*;
public class Hmmm implements MyInter{
public void Test(){
}
}
######################## file listing ##########################
-- MyJsp
|
-- test.jsp
|
-- WEB-INF
|
-- classes
| |
| -- headline
| |
| -- FileClassLoader.class
| |
| -- MyInter.class
|
-- plugins
|
-- Hmmm.class
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