convert bean to another bean in java
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v5tech commented
DozerUtil
package net.aimeizi.util;
import java.util.Collection;
import java.util.List;
import org.dozer.DozerBeanMapper;
import com.google.common.collect.Lists;
/**
* 简单封装Dozer, 实现深度转换Bean<->Bean的Mapper.实现:
* 1. 持有Mapper的单例.
* 2. 返回值类型转换.
* 3. 批量转换Collection中的所有对象.
* 4. 区分创建新的B对象与将对象A值复制到已存在的B对象两种函数.
*/
public class DozerUtil {
/**
* 持有Dozer单例, 避免重复创建DozerMapper消耗资源.
*/
private static DozerBeanMapper dozer = new DozerBeanMapper();
/**
* 基于Dozer转换对象的类型.
*/
public static <T> T map(Object source, Class<T> destinationClass) {
return dozer.map(source, destinationClass);
}
/**
* 基于Dozer转换Collection中对象的类型.
*/
public static <T> List<T> mapList(@SuppressWarnings("rawtypes") Collection sourceList, Class<T> destinationClass) {
List<T> destinationList = Lists.newArrayList();
for (Object sourceObject : sourceList) {
T destinationObject = dozer.map(sourceObject, destinationClass);
destinationList.add(destinationObject);
}
return destinationList;
}
/**
* 基于Dozer将对象A的值拷贝到对象B中.
*/
public static void map(Object source, Object destinationObject) {
dozer.map(source, destinationObject);
}
}
OrikaUtil
package net.aimeizi.util;
import ma.glasnost.orika.MapperFacade;
import ma.glasnost.orika.MapperFactory;
import ma.glasnost.orika.impl.DefaultMapperFactory;
public class OrikaUtil {
/**
* 将source 转换成 destinationClass
* @param sourceObject 源对象
* @param destinationClass 目标类
* @return
*/
public static <T> T map(Object sourceObject, Class<T> destinationClass) {
MapperFacade mapper = getMapper(sourceObject.getClass(), destinationClass);
return mapper.map(sourceObject, destinationClass);
}
/**
* 将source 转换成destinationObject
* @param sourceObject 源对象
* @param destinationObject 目标对象
*/
public static void map(Object sourceObject, Object destinationObject) {
MapperFacade mapper = getMapper(sourceObject.getClass(), destinationObject.getClass());
mapper.map(sourceObject, destinationObject);
}
/**
* 获得mapper
* @param sourceClass 源类
* @param destinationClass 目标类
* @return
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public static MapperFacade getMapper(Class sourceClass, Class destinationClass) {
MapperFactory mapperFactory = new DefaultMapperFactory.Builder().build();
mapperFactory.classMap(sourceClass, destinationClass).mapNulls(false).mapNullsInReverse(false).byDefault().register();
return mapperFactory.getMapperFacade();
}
}
http://blog.sokolenko.me/2013/05/dozer-vs-orika-vs-manual.html