java – Spring：将属性文件注入map

我有一个属性文件如下：

transition.s1=s2,s5
transition.s2=s4,s1
...................

问题：如何将这些属性注入Map< String,String>？你能提供一个例子吗？

最佳答案

在XML配置的情况下

public class StateGraph {
    public StateGraph(Map

当属性实现map时,您可以将其作为构造函数提供

sspath:props.properties"/> 
    

请注意,Spring将完成所有the required generic type conversions

If you are using Java 5 or Java 6,you will be aware that it is
possible to have strongly typed collections (using generic types).
That is,it is possible to declare a Collection type such that it can
only contain String elements (for example). If you are using Spring to
dependency inject a strongly-typed Collection into a bean,you can
take advantage of Spring’s type-conversion support such that the
elements of your strongly-typed Collection instances will be converted
to the appropriate type prior to being added to the Collection.

如果您使用的是编程配置,那么您必须自己在@Configuration类中执行此操作 – 请参阅Converting java.util.Properties To HashMap.

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