CglibDynaBean

来源：互联网发布：网络语奇芭是什么意思编辑：程序博客网时间：2024/06/03 16:27

package com.sip.cms.datamanager.service.impl;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import net.sf.cglib.beans.BeanGenerator;
import net.sf.cglib.beans.BeanMap;

public class DynaBeanCglibTest {

    public static void main(String[] args) throws ClassNotFoundException {

        System.out.println("Generate JavaBean ...");
        // 设置类成员属性
        Map properties = new HashMap();
        properties.put("id", Class.forName("java.lang.Integer"));
        properties.put("name", Class.forName("java.lang.String"));
        properties.put("address", Class.forName("java.lang.String"));
        // 生成动态 Bean
        CglibDynaBean bean = new CglibDynaBean(properties);
        System.out.println(" OK!");

        System.out.println("Set values ...");
        // 给 Bean 设置值
        bean.setValue("id", new Integer(123));
        bean.setValue("name", "454");
        bean.setValue("address", "789");
        System.out.println(" OK!");

        System.out.println("Get values");
        // 从 Bean 中获取值，当然了获得值的类型是 Object
        System.out.println(" >> id      = " + bean.getValue("id"));
        System.out.println(" >> name    = " + bean.getValue("name"));
        System.out.println(" >> address = " + bean.getValue("address"));

        System.out.println("Class name");
        // 查看动态 Bean 的类名
        Class clazz = bean.getObject().getClass();
        System.out.println(" >> " + clazz.getName());

        System.out.println("Show all methods");
        // 查看动态 Bean 中声明的方法
        Method[] methods = clazz.getDeclaredMethods();
        for(int i = 0; i < methods.length; i++) {
            System.out.println(" >> " + methods[i].getName());
        }

        System.out.println("Show all properties");
        // 查看动态 Bean 中声明的字段
        Field[] fields = clazz.getDeclaredFields();
        for(int i = 0; i < fields.length; i++) {
            System.out.println(" >> " + fields[i].getName());
        }
    }
}

class CglibDynaBean {
    private Object object = null;
    private BeanMap beanMap = null;

    public CglibDynaBean(Map properties) {
        this.object = generateBean(properties);
        this.beanMap = getBeanMap();
    }

    public void setValue(String property, Object value) {
        beanMap.put(property, value);
    }

    public Object getValue(String property) {
        return beanMap.get(property);
    }

    public Object getObject() {
        return this.object;
    }

    private Object generateBean(Map properties) {
        BeanGenerator generator = new BeanGenerator();
        Set keySet = properties.keySet();
        for(Iterator i = keySet.iterator(); i.hasNext();) {
            String key = (String)i.next();
            generator.addProperty(key, (Class)properties.get(key));
        }
        return generator.create();
    }

    private BeanMap getBeanMap() {
        return BeanMap.create(this.object);
    }
}

来源：http://topic.csdn.net/u/20080610/23/a8b917e6-05bb-47bc-87c8-5828b3bee970.html