Dozer--第三方复制工具,哎哟,还不错!

         Dozer简单点说,就是拷贝工具,也是复制工具的意思,官方的解释是:Dozer is a Java Bean to Java Bean mapper that recursively copies data from one object to another. Typically, these Java Beans will be of different complex types.非常直白,就是类与类之间的属性复制,包含复杂的属性,这点非常不错,嗯嗯,看详细运用

         引入maven

<dependency>
	<groupId>net.sf.dozer</groupId>
	<artifactId>dozer</artifactId>
	<version>5.5.1</version>
</dependency>

/**
 * 属性复制工具
 * 
 * @author Dan
 *
 */
public class DozerBeanMapperUtil {
	private static DozerBeanMapper mapper;
	
	private DozerBeanMapperUtil() {
	
	}

	public static DozerBeanMapper getInstance() {  
		if(mapper==null){
			mapper = new  DozerBeanMapper();
		}
		return mapper;
	}
}

public static void main(String[] args) {
		DozerBeanMapper dozer = DozerBeanMapperUtil.getInstance();
		User u1 =  new User();
		u1.setName("u1");
		System.out.println(u1.getName());
		User u2 =  new User();
		dozer.map(u1, u2);
		System.out.println(u2.getName());
	}

这样的方式大多数用在webserver上,将各户提交的VO转成model,或者将model转成各户须要的VO,可是这里注意的是,假设与Hibernate的表关联并用,会出现循环等错误的现象,这个常常出如今类与类有@manyToOne和@oneTomany的关系,假设出现了,就请另想办法解决吧,普通情况下还是屡试不爽的