Eirc Zhao [http://community.jboss.org/people/zhaoxwen] created the discussion
"Help for java.lang.VerifyError when modify a method" To view the discussion, visit: http://community.jboss.org/message/640621#640621 -------------------------------------------------------------- Hi,all, I write a class named Bsafproxy which will change the method of the org.jdesktop.application.ResourceMap in the basf-1.9.jar; I don't know why it can not work, who will do me a faver, give me some idears, thanks. BTW, BsafProxy.java is my class, and the bsaf-1.9.jar is witch i wanna to modifed. package org.eric.javassist; import javassist.CannotCompileException; import javassist.ClassPool; import javassist.CtClass; import javassist.CtMethod; import javassist.CtNewMethod; import javassist.Loader; import javassist.NotFoundException; /** * @author apple * */ public class BsafProxy { /** * @param args */ public static void main(String[] args) { try { ClassPool csPool = ClassPool.getDefault(); csPool.insertClassPath("/Users/apple/Documents/Eric/work/eclipse/workspace/HelloMac/bsaf-1.9.jar"); CtClass demoClass = csPool.get("org.jdesktop.application.ResourceMap"); CtMethod populateResourceMap = demoClass.getDeclaredMethod("populateResourceMap"); demoClass.removeMethod(populateResourceMap); CtMethod newPopulate = CtNewMethod.make(getContent(), demoClass); demoClass.addMethod(newPopulate); // URL clazz = csPool.find("org.jdesktop.application.ResourceMap"); Loader loader = new Loader(csPool); Class clazz = loader.loadClass("org.jdesktop.application.ResourceMap"); clazz.newInstance(); } catch (NotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (CannotCompileException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InstantiationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } } private static String getContent() { // private void populateResourceMap(String bundleName, Map<String, Object> bundlesMap) { // try { // ResourceBundle bundle = ResourceBundle.getBundle(bundleName, locale, classLoader); // Enumeration<String> keys = bundle.getKeys(); // while (keys.hasMoreElements()) { // String key = keys.nextElement(); // bundlesMap.put(key, bundle.getObject(key)); // } // } catch (MissingResourceException ignore) { // /* bundleName is just a location to check, it's not // * guaranteed to name a ResourceBundle // */ // } // } StringBuffer content = new StringBuffer(); content.append("private void populateResourceMap(String bundleName, java.util.Map bundlesMap) {"); content.append("try {"); content.append(" java.util.ResourceBundle bundle = java.util.ResourceBundle.getBundle($1, locale, classLoader);"); content.append(" java.util.Enumeration keys = bundle.getKeys();"); content.append(" while (keys.hasMoreElements()) {"); content.append(" String key = keys.nextElement();"); content.append(" $2.put(key, bundle.getObject(key));"); content.append(" }"); content.append("} catch (java.util.MissingResourceException ignore) { }"); content.append("}"); return content.toString(); } } ouput: Exception in thread "main" java.lang.VerifyError: (class: org/jdesktop/application/ResourceMap, method: populateResourceMap signature: (Ljava/lang/String;Ljava/util/Map;)V) Incompatible argument to function at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389) at java.lang.Class.getConstructor0(Class.java:2699) at java.lang.Class.newInstance0(Class.java:326) at java.lang.Class.newInstance(Class.java:308) at org.eric.javassist.BsafProxy.main(BsafProxy.java:38) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/640621#640621] Start a new discussion in Javassist at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2062]
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