集册 Java实例教程 从给定的类获取属性名称的属性描述符。

从给定的类获取属性名称的属性描述符。

欢马劈雪     最近更新时间:2020-01-02 10:19:05

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从给定的类获取属性名称的属性描述符。

/**   

 *  Copyright (c) 2005-2014 VedantaTree all rights reserved.

 * 

 *  This file is part of ExpressionOasis.

 *

 *  ExpressionOasis is free software. You can redistribute it and/or modify

 *  it under the terms of the GNU Lesser General Public License as published by

 *  the Free Software Foundation, either version 3 of the License, or

 *  (at your option) any later version.

 *

 *  ExpressionOasis is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL 

 *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES 

 *  OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 

 *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 

 *  OR OTHER DEALINGS IN THE SOFTWARE.See the GNU Lesser General Public License 

 *  for more details.

 *

 *  You should have received a copy of the GNU Lesser General Public License

 *  along with ExpressionOasis. If not, see <http://www.gnu.org/licenses/>.

 *  

 *  Please consider to contribute any enhancements to upstream codebase. 

 *  It will help the community in getting improved code and features, and 

 *  may help you to get the later releases with your changes.

 */

//package com.nowjava;
/**来自 
 时 代 J a v a 公 众 号 - N o w J a v  a . c o m**/

import java.beans.BeanInfo;

import java.beans.IntrospectionException;

import java.beans.Introspector;

import java.beans.PropertyDescriptor;


public class Main {

    public static void main(String[] argv) throws Exception {

        Class beanClass = String.class;

        String property = "nowjava.com";

        System.out.println(getPropertyDescriptor(beanClass, property));
        /*
        来 自*
         时代Java - nowjava.com
        */

    }


    /**

     * Gets the property descriptor for the property name from given class.

     * 

     * @param beanClass the class of bean

     * @param property the name of property.

     * @return the property descriptor if property name found else return <code>null</code>.

     * @throws IntrospectionException

     */

    public static final PropertyDescriptor getPropertyDescriptor(

            Class beanClass, String property) throws IntrospectionException {

        BeanInfo beanInfo = Introspector.getBeanInfo(beanClass);
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