我試圖用Javassist進行,我在做這個,前期主要方法爲follwoing內裝載特定類:了Javassist加載在預主要方法(Java分析)類文件
public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined,
ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException
{
byte[] byteCode = classfileBuffer;
if(className.toLowerCase().endsWith("class1"))
{
ClassPool classPool = ClassPool.getDefault();
CtClass ctClass = classPool.get("com.class2");
}
}
但unfortuanetly,我得到一個NotFoundException ....
com.class2是將被加載後的Class1的類加載器加載的類,但我NNED添加新的方法,有一個名爲class1返回類型com.class2
我試過了stackoverflow.co中的所有解決方案m但沒有任何結果.....
最後,class1和class2都在同一個包中,並且在同一個JAR文件中,class1有一個類型爲class2的成員,但我不知道爲什麼這個classpool可以' t加載第二個。
堆棧跟蹤這裏:
Exception: javassist.NotFoundException: com.Class2
javassist.NotFoundException: com.Class2
at javassist.ClassPool.get(ClassPool.java:439)
at javassist.ClassPool.getCtClass(ClassPool.java:504)
at com.stuff.MainAppletTransformer.transform(MainAppletTransformer.java:69)
at sun.instrument.TransformerManager.transform(Unknown Source)
at sun.instrument.InstrumentationImpl.transform(Unknown Source)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.defineClassHelper(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.access$100(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
首先,我需要非常感謝你的專家答覆,這是我的三個星期的主要問題,我們如何加載該類,並最終通過你的偉大答案來解決。關於方法,我只是試圖澄清我的要點,但肯定它有回報價值....非常感謝您的幫助。 – ManKeer 2014-11-04 06:26:53