弹簧集合合并 [英] Spring collection merge

问题描述

我有一个FactoryBean生成两个列表，我想用这两个合并版本初始化一个bean。有这样做吗？

 < bean id =listAclass =XFactoryBean> 
 ... 
< / bean> 
< bean id =listBclass =YFactoryBean> 
 ... 
< / bean> 
< bean> 
< property name =AwithB...> 
< / bean> 
  

有一个解决方案适用于静态列表（ http://vikdor.blogspot.hu/2012/10/using-collection-merging-in-

解决方案

Java @Configuration FTW：

  @Configuration 
 public class Config {
 
 @Resource 
 private List listA; 
 
 @Resource 
 private List listB; 
 
 @Bean 
 public List AwithB（）{
 List mergedList = new ArrayList（listA）; 
 listB.addAll（listB）; 
 return mergedList; 
} 
 
} 
  

>

I have two lists generated with a FactoryBean and I would like to initialize a bean with the merged version of this two. Is there a way doing this?

<bean id="listA" class="XFactoryBean" >
  ...
</bean>
<bean id="listB" class="YFactoryBean">
  ...
</bean>
<bean >
  <property name="AwithB" ...>
</bean>

There is a solution that works with static lists (http://vikdor.blogspot.hu/2012/10/using-collection-merging-in-spring-to.html), but does not work with those generated lists.

解决方案

Java @Configuration FTW:

@Configuration
public class Config {

    @Resource
    private List listA;

    @Resource
    private List listB;

    @Bean
    public List AwithB() {
        List mergedList = new ArrayList(listA);
        listB.addAll(listB);
        return mergedList;
    }

}

Much less boilerplate.

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