实体copy vo

1、注入vo依赖

<dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
        </dependency>

2、封装实体copy方法

import java.lang.reflect.Field;

import org.apache.commons.beanutils.BeanUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class MyBeanUtils {
  
  private static final Logger logger = LoggerFactory.getLogger(MyBeanUtils.class);
  
  /**
   * copy bean 字段
   * 若是被copy bean 的字段值不为空，进行copy
   * @param dest
   * @param origin
   */
  public static void copyProperties(Object dest, Object origin) {
    try {
      Field[] destFileds = dest.getClass().getDeclaredFields();
      Field[] originFileds = origin.getClass().getDeclaredFields();
      for(Field destField : destFileds){
        destField.setAccessible(true);
        String destFieldName = destField.getName();
        for(Field originField : originFileds){
          originField.setAccessible(true);
          if(null != originField.get(origin) && !"".equals(originField.get(origin)) && !"null".equals(originField.get(origin))){
            if(destField.getName().equals(originField.getName())){
              BeanUtils.copyProperty(dest, destFieldName, originField.get(origin));
            }
          }
        }
      }
    } catch (Exception e) {
      logger.error("copy bean error", e); 
      e.printStackTrace();
    }
  }
}

3、使用

MyBeanUtils.copyProperties(obj1,obj2);
//obj1 被赋值的实体
//obj2 去赋值的实体