// 用javassit得到动态代理 public T createJavassistBytecodeDynamicProxy( LoadBalancer loadBalance, ConcurrentMap<String, T> map, Class ifaces) { try { ClassPool mPool = new ClassPool(true); CtClass mCtc = mPool.makeClass(ifaces.getName() + "JavaassistProxy"); mCtc.addInterface(mPool.get(ifaces.getName())); mCtc.addConstructor(CtNewConstructor.defaultConstructor(mCtc)); mCtc.addField(CtField.make("public " + loadBalance.getClass().getName() + " sub;", mCtc)); mCtc.addField(CtField.make("public " + map.getClass().getName() + " map;", mCtc)); // mCtc.addField(CtField.make("public " + ArrayList.class.getName() + " list;", // mCtc)); mCtc.addMethod( CtNewMethod.make( "public Object getRealClient() { return (Object)sub.select(new " + ArrayList.class.getName() + "(map.values())); }", mCtc)); // 获取接口的方法 for (Method method : ifaces.getMethods()) { Class returnType = method.getReturnType(); String modifiers = "public"; if (Modifier.PUBLIC == method.getModifiers()) { modifiers = "public"; } else if (Modifier.PROTECTED == method.getModifiers()) { modifiers = "protected"; } else if (Modifier.PRIVATE == method.getModifiers()) { modifiers = "private"; } Class<?>[] parameter = method.getParameterTypes(); String params = ""; String ps = ""; for (Class param : parameter) { params += param.getName() + " " + param.getName() + ","; ps += param.getName() + ","; } if (params.equals("")) { params = ""; ps = ""; } else { params = params.substring(0, params.length()); ps = ps.substring(0, ps.length()); } mCtc.addMethod( CtNewMethod.make( modifiers + " void " + method.getName() + "(String a,String b){ Object t=this.getRealClient(); return ((" + ifaces.getName() + ")t)." + method.getName() + "(a,b) ;}", mCtc)); // mCtc.addMethod(CtNewMethod.make("public int count() { return // delegate.count(); }", mCtc)); } Class<?> pc = mCtc.toClass(); mCtc.debugWriteFile("/home/liguojun"); mCtc.writeFile("/home/liguojun"); T bytecodeProxy = (T) pc.newInstance(); Field filed = bytecodeProxy.getClass().getField("sub"); filed.set(bytecodeProxy, loadBalance); Field filed1 = bytecodeProxy.getClass().getField("map"); filed1.set(bytecodeProxy, map); return bytecodeProxy; } catch (Exception e) { e.printStackTrace(); } return null; }