Java 动态代理给对象插入动态属性

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package com.gwm.gwmcenterbudget.projectbudget.client.api.dto;   import com.google.common.collect.Maps; import net.sf.cglib.beans.BeanGenerator; import net.sf.cglib.beans.BeanMap; import org.apache.commons.beanutils.PropertyUtilsBean; import org.slf4j.Logger; import org.slf4j.LoggerFactory;   import java.beans.PropertyDescriptor; import java.util.Map;   /**  * * 动态为bean添加字段  */   public class DynamicBeanUtils {       private static final Logger logger = LoggerFactory.getLogger(DynamicBeanUtils.class);       public static Object getTarget(Object dest, Map<String, Object> addProperties) {           PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();           //得到原对象的属性           PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(dest);           Map<String, Class<?>> propertyMap = Maps.newHashMap();           for (PropertyDescriptor d : descriptors) {               if (!"class".equalsIgnoreCase(d.getName())) {                   propertyMap.put(d.getName(), d.getPropertyType());               }           }           addProperties.forEach((k, v) -> propertyMap.put(k, v.getClass()));           //构建新的对象           DynamicBean dynamicBean = new DynamicBean(dest.getClass(), propertyMap);           for (Map.Entry<String, Class<?>> entry : propertyMap.entrySet()) {               try {                   if (!addProperties.containsKey(entry.getKey())) {//原来的值                       dynamicBean.setValue(entry.getKey(), propertyUtilsBean.getNestedProperty(dest, entry.getKey()));                   } else {//新增的值                       dynamicBean.setValue(entry.getKey(), addProperties.get(entry.getKey()));                   }               } catch (Exception e) {                   logger.error(e.getMessage(), e);               }           }           return dynamicBean.getTarget();       }       private static class DynamicBean {           /**          * * 目标对象          */           private Object target;           /**          * * 属性集合          */           private BeanMap beanMap;           public DynamicBean(Class<?> superclass, Map<String, Class<?>> propertyMap) {               this.target = generateBean(superclass, propertyMap);               this.beanMap = BeanMap.create(this.target);           }           /**          * * bean 添加属性和值          */           public void setValue(String property, Object value) {               beanMap.put(property, value);           }           /**          * * 获取属性值          */           public Object getValue(String property) {               return beanMap.get(property);           }           /**          * * 获取对象          */           public Object getTarget() {               return this.target;           }           /**          * * 根据属性生成对象          */           private Object generateBean(Class<?> superclass, Map<String, Class<?>> propertyMap) {               BeanGenerator generator = new BeanGenerator();               if (null != superclass) {                   generator.setSuperclass(superclass);               }               BeanGenerator.addProperties(generator, propertyMap);               return generator.create();           }       }   }

　　

       map.put("测试-动态字段-展示", "测试值");
            Object obj = DynamicBeanUtils.getTarget(对象, map);

 <dependency>

            <groupId>cglib</groupId>

            <artifactId>cglib</artifactId>

            <version>2.2.2</version>

        </dependency>

        <dependency>

            <groupId>commons-beanutils</groupId>

            <artifactId>commons-beanutils</artifactId>

            <version>1.9.4</version>

        </dependency>