转自：

/**    * java反射bean的get方法    *     * @param objectClass    * @param fieldName    * @return    */       @SuppressWarnings("unchecked")       public static Method getGetMethod(Class objectClass, String fieldName) {       StringBuffer sb = new StringBuffer();       sb.append("get");       sb.append(fieldName.substring(0, 1).toUpperCase());       sb.append(fieldName.substring(1));       try {       return objectClass.getMethod(sb.toString());       } catch (Exception e) {       }       return null;       }       /**    * java反射bean的set方法    *     * @param objectClass    * @param fieldName    * @return    */       @SuppressWarnings("unchecked")       public static Method getSetMethod(Class objectClass, String fieldName) {       try {       Class[] parameterTypes = new Class[1];       Field field = objectClass.getDeclaredField(fieldName);       parameterTypes[0] = field.getType();       StringBuffer sb = new StringBuffer();       sb.append("set");       sb.append(fieldName.substring(0, 1).toUpperCase());       sb.append(fieldName.substring(1));       Method method = objectClass.getMethod(sb.toString(), parameterTypes);       return method;       } catch (Exception e) {       e.printStackTrace();       }       return null;       }       /**    * 执行set方法    *     * @param o执行对象    * @param fieldName属性    * @param value值    */       public static void invokeSet(Object o, String fieldName, Object value) {       Method method = getSetMethod(o.getClass(), fieldName);       try {       method.invoke(o, new Object[] { value });       } catch (Exception e) {       e.printStackTrace();       }       }       /**    * 执行get方法    *     * @param o执行对象    * @param fieldName属性    */       public static Object invokeGet(Object o, String fieldName) {       Method method = getGetMethod(o.getClass(), fieldName);       try {       return method.invoke(o, new Object[0]);       } catch (Exception e) {       e.printStackTrace();       }       return null;       }