利用cglib库给对象动态添加属性

package com.lrq.cglib;


import java.util.Map;


import net.sf.cglib.beans.BeanGenerator;

import net.sf.cglib.beans.BeanMap;


public class DynamicGenerateBean {


    private Object object;


    private BeanMap beanMap;


        public DynamicGenerateBean(Map propertyMap) {

          super();

            this.object = this.generateBean(propertyMap);

               this.beanMap = BeanMap.create(this.object);

 }


    private Object generateBean(Map propertyMap) {

         BeanGenerator beanGenerator = new BeanGenerator();

          for (Map.Entry me : propertyMap.entrySet()) {

                  // 给bean添 属性;即属性对应的类型;

                    beanGenerator.addProperty(me.getKey(), me.getValue());

              }

           return beanGenerator.create();

      }


       public void setPropertyByName(String propertyName, Object value) {

          this.beanMap.put(propertyName, value);

      }


       public Object getPropertyByName(String propertyName) {

              return this.beanMap.get(propertyName);

      }


}

测试类:

package com.lrq.cglib;


import java.util.HashMap;

import java.util.Map;


import org.junit.Test;


public class DynamicGenerateBeanTest {

      @SuppressWarnings({ "unused", "rawtypes" })

 @Test

       public void test(){


            Map propertyMap=new HashMap();

            propertyMap.put("id", Integer.class);

               propertyMap.put("name", String.class);

              //propertyMap.put("",int.class);

            DynamicGenerateBean dynamicGenerateBean=new DynamicGenerateBean(propertyMap);

               dynamicGenerateBean.setPropertyByName("id", 1);

             dynamicGenerateBean.setPropertyByName("name", "lirongqiang");

               System.out.println(dynamicGenerateBean.getPropertyByName("id"));

            System.out.println(dynamicGenerateBean.getPropertyByName("name"));

          //System.out.println(dynamicGenerateBean.getPropertyByName("id"));

  }

}

他实现了动态给某个对象添加属性并设置值:但是并不是真正意义上的给属性动态添加属性,只是实现了这种效果而已;
应用场景:vo对象,当我们给vo对象赋值的时候可以采用这种方法,不需要每次都创建vo对象;用这个实现.然后根据自己的业务逻辑改造
这个类就行了

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