public static Object newInstance(String clazzStr) {
        try {
        	log.debug("loading class:" + clazzStr);
            Class<?> clazz = loadClass(clazzStr);
            return instantiate(clazz);
        } catch (ClassNotFoundException e) {
            log.error("Class not found.", e);
        } catch (Exception ex) {
        	log.error("类型实例化失败[class=" + clazzStr + "]\n" + ex.getMessage());
        }
        return null;
    }
public static Object newInstance(String clazzStr) {
        try {
        	log.debug("loading class:" + clazzStr);
            Class<?> clazz = loadClass(clazzStr);
            return instantiate(clazz);
        } catch (ClassNotFoundException e) {
            log.error("Class not found.", e);
        } catch (Exception ex) {
        	log.error("类型实例化失败[class=" + clazzStr + "]\n" + ex.getMessage());
        }
        return null;
    }
public static Object newInstance ( String clazzStr ) { try { log . debug ( "loading class:" + clazzStr ) ; Class < ? > clazz = loadClass ( clazzStr ) ; return instantiate ( clazz ) ; } catch ( ClassNotFoundException e ) { log . error ( "Class not found." , e ) ; } catch ( Exception ex ) { log . error ( "类型实例化失败[class=" + clazzStr +  ] n" + ex. e Messa e )) ; } return null ; }
实例化指定的类名称（全路径）
@param clazzStr
@return
@throws Exception
实例化指定的类名称（全路径）