在运行时从属性文件中读取值 [英] Reading valued from properties file at Runtime

问题描述

我想根据来自属性文件的请求获取特定值.如何做到这一点?

I want to get specific value based on request from the property file.how to do that?

我有以下 spring 配置.我想根据请求设置 Exprops 的值并从属性文件中获取相应的值

I have following spring configuration.i want to set the value for Exprops as per the request and get corresponding values from the properties file

<bean id="Prop" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location">
        <value>classpath:ErrorMessage.properties</value>
    </property>
</bean>

<bean id="PropertiesBean" class="com.util.PropertiesUtil">
    <property name="Exprops" value="${EXampleExceptiion}"></property>
</bean>

推荐答案

使用 PropertiesFactoryBean 注入 Bean 中的属性.

<bean id="myPropertiesBean"
  class="org.springframework.beans.factory.config.PropertiesFactoryBean">
  <property name="location" value="classpath:ErrorMessage.properties"/>
</bean>

这提供了一个 属性 可以在任何 Bean 中以 myPropertiesBean 名称注入的对象/Bean (<property name="x" ref="myPropertiesBean"/>).

This provides a Properties Object/Bean which can be injected under the name myPropertiesBean in any Bean (<property name="x" ref="myPropertiesBean"/>).

此外 Spring 提供了 util 命名空间(自 Spring 2.5 起):在那里你可以编写更短的 PropertyFactoryBean 定义:

In addition Spring provides the util namespace (since Spring 2.5): There you can write the PropertyFactoryBean definition a bit shorter:

<util:properties id="myPropertiesBean"
 location="classpath:ErrorMessage.properties"/>

@see Spring 参考章节 C.2.2.3.

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