//过滤特殊字符
            public static String encoding(String src){
            if (src==null)
            return "";
            StringBuilder result=new StringBuilder();
            if (src!=null){
            src=src.trim();
            for (int pos=0;pos<src.length();pos++){
            switch(src.charAt(pos)){
            case '\"':result.append(""");break;
            case '<':result.append("<");break;
            case '>':result.append(">");break;
            case '\'':result.append("&apos;");break;
            case '&':result.append("&");break;
            case '%':result.append("&pc;");break;
            case '_':result.append("&ul;");break;
            case '#':result.append("&shap;");break;
            case '?':result.append("&ques;");break;
            default:result.append(src.charAt(pos));break;
            }
            }
            }
            return result.toString();
            }
            //反过滤特殊字符
                public static String decoding(String src){
            if (src==null)
            return "";
            String result=src;
            result=result.replace(""", "\"").replace("&apos;", "\'");
            result=result.replace("<", "<").replace(">", ">");
            result=result.replace("&", "&");
            result=result.replace("&pc;", "%").replace("&ul", "_");
            result=result.replace("&shap;", "#").replace("&ques", "?");
            return result;
            }
            //利用反射调用一个继承层次上的函数族，比如安装程序，有安装数据库的，安装文件系统的等，命名均已“install”开始，你就可以将参数part设为“install”，src是其实类实例，root是终止父类
                public static <T> void invokeMethods(String part,T src,Class root) throws ExceptionManager{
            if (root!=null){
            if (!root.isInstance(src))return;
            root=(Class)root.getGenericSuperclass();
            }
            HashMap<String,Method> invokees=new HashMap<String,Method>();
            Class target=src.getClass();
            do{
            Method [] methods=target.getDeclaredMethods();
            for (Method method:methods){
            String mn=method.getName();
            Boolean isPass=mn.startsWith(part);
            if (isPass){
            Integer nopt=method.getParameterTypes().length;
            Boolean isStatic=Modifier.isStatic(method.getModifiers());
            if ((nopt==0)&&(!isStatic)){
            if (!invokees.containsKey(mn))
            invokees.put(mn, method);
            }
            }
            }
            target=(Class)target.getGenericSuperclass();
            }while(target!=root);
            Iterator<String> methods=invokees.keySet().iterator();
            while (methods.hasNext()){
            Method invokee=invokees.get(methods.next());
            Boolean access=invokee.isAccessible();
            invokee.setAccessible(true);
            try {
            invokee.invoke(src);
            } catch (InvocationTargetException e) {
            throw ExceptionManager.wrap(e.getTargetException());
            }catch (Exception e){}
            invokee.setAccessible(access);
            }
            }