spring 获取自定义配置文件properties中参数

Spring中config属性文件的读取与使用 PropertyPlaceholderConfigurer 注解@Component
1.配置文件：/WEB-INF/configInfo.properties
配置文件内容：
email.host = www.94gleaner.com
email.port = xxx
email.username = gleaner
email.password = xxx
email.sendFrom = [email protected]
2.Spring容器启动时，使用内置bean对属性文件信息进行加载，在bean.xml中添加如下：
<!– spring的属性加载器，加载properties文件中的属性 –>
<bean id=”propertyConfigurer” class=”org.​​​spring​​framework.beans.factory.config.PropertyPlaceholderConfigurer”>1. <property name=”location”>
1. <value>/WEB-INF/configInfo.properties</value>
2. </property>
3. <property name=”fileEncoding” value=”utf-8″ />
</bean>

3.其它bean中引用,例：
<property name=”host”>1. <value>${email.host}</value>
</property>
<property name=”port”>1. <value>${email.port}</value>
</property>

4.JAVA代码中获取方法：创建ConfigInfo.java
@Component(“configInfo”)
public class ConfigInfo {1. @Value(“${email.host}”)
2. private String host;
3. @Value(“${email.port}”)
4. private String port;
5. 
6. public String getHost() {
1. return host;
7. }
8. public String getPort() {
1. return port;
9. }
}

5.代码中调用处
@Autowired
private ConfigInfo configInfo;public byte[] Test(HttpServletResponse response) {
1. string host = configInfo.getHost();
}