我现在在测试中实际上正在使用类似的方法，将一组类定义作为byte []给予ClassLoader：
public static class ByteClassLoader extends urlclassloader {
private final Map<String, byte[]> extraClassDefs;
public ByteClassLoader(URL[] urls, ClassLoader parent, Map<String, byte[]> extraClassDefs) {
super(urls, parent);
this.extraClassDefs = new HashMap<String, byte[]>(extraClassDefs);
}
@Override
protected Class<?> findClass(final String name) throws ClassNotFoundException {
byte[] classBytes = this.extraClassDefs.remove(name);
if (classBytes != null) {
return defineClass(name, classBytes, 0, classBytes.length);
}
return super.findClass(name);
}
}
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