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Java 返回一个由pojo属性名称组成的alpha排序字符串数组。

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返回一个由pojo属性名称组成的alpha排序字符串数组。

实例源码：

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/**

* Helios, OpenSource Monitoring

* Brought to you by the Helios Development Group

* as indicated by the @author tags. See the copyright.txt file in the

* distribution for a full listing of individual contributors.

* This 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 2.1 of

* the License, or (at your option) any later version.

* This software 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. 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 this software; if not, write to the Free

* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

* 02110-1301 USA, or see the FSF site: http://www.fsf.org.

//package com.nowjava;

import java.beans.*;

/** 
来 自 
n  o  w  j  a  v  a . c o m
**/

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

public class Main {

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

Object pojo = "nowjava.com";

System.out.println(java.util.Arrays

.toString(getPojoAttributeTypes(pojo)));

}

/**

* Returns an alpha sorted string array of a pojo's attribute names.

* @param pojo

* @return A string array of attribute names.

public static String[] getPojoAttributeTypes(Object pojo) {

List<String> list = new ArrayList<String>();

for (PropertyDescriptor pd : getPropertyDescriptors(pojo)) {

if (pd.getReadMethod() != null) {

list.add(pd.getReadMethod().getReturnType().getName());

} else {/** n  o  w  j  a  v  a . c o m 提供 **/

list.add(pd.getWriteMethod().getReturnType().getName());

}

Collections.sort(list);

return list.toArray(new String[list.size()]);

}

/**

* Returns a list of a pojo's <code>PropertyDescriptor</code>s minus the same for <code>java.lang.Object</code>.

* @param pojo

* @return A list of <code>PropertyDescriptor</code>s.

public static List<PropertyDescriptor> getPropertyDescriptors(

Object pojo) {

List<PropertyDescriptor> list = getAllPropertyDescriptors(pojo);

List<PropertyDescriptor> objList = getAllPropertyDescriptors(new Object());

list.removeAll(objList);

return list;

}

/**

* Returns a list of all of a pojo's <code>PropertyDescriptor</code>s

* @param pojo

* @return A list of <code>PropertyDescriptor</code>s.

public static List<PropertyDescriptor> getAllPropertyDescriptors(
/**代码未完, 请加载全部代码(NowJava.com).**/

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本文系作者在时代Java发表，未经许可，不得转载。如有侵权，请联系nowjava@qq.com删除。

编辑于 2020-03-26 09:23:272020-03-26 09:23:27

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