集册 Java实例教程 尝试找到给定bean属性的getter方法。

尝试找到给定bean属性的getter方法。

欢马劈雪     最近更新时间:2020-01-02 10:19:05

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尝试找到给定bean属性的getter方法。

/*

 *  Copyright 2010 Visural.

 * 

 *  Licensed under the Apache License, Version 2.0 (the "License");

 *  you may not use this file except in compliance with the License.

 *  You may obtain a copy of the License at

 * 

 *       http://www.apache.org/licenses/LICENSE-2.0

 * 

 *  Unless required by applicable law or agreed to in writing, software

 *  distributed under the License is distributed on an "AS IS" BASIS,

 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 *  See the License for the specific language governing permissions and

 *  limitations under the License.

 *  under the License.

 *//**时   代    Java - nowjava.com**/

//package com.nowjava;

import java.lang.reflect.Method;


public class Main {

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

        Class beanType = String.class;

        String propertyName = "nowjava.com";

        System.out.println(findGetter(beanType, propertyName));

    }


    /**

     * Attempt to find a getter method for the given bean property. Returns

     * null if the property can not be resolved.

     * @param beanType

     * @param propertyName

     * @return

     */

    public static Method findGetter(Class beanType, String propertyName) {

        String getterName = "get"
        /* 
        *来 自
         n o w j a v a . c o m
        */

                + propertyName.toUpperCase().substring(0, 1)

                + propertyName.substring(1);

        Method result = findMethod(beanType, getterName);

        if (result == null) {

            getterName = "is" + propertyName.toUpperCase().substring(0, 1)

                    + propertyName.substring(1);

            result = findMethod(beanType, getterName);

        }

        return result;

    }


    private static Method findMethod(Class beanType, String name,

            Class... params) {

        try {

            Method method = beanType.getMethod(name, params);

          
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