使用ConfigurationFactory加载context-param中的配置文件
web.xml里面可以定义两种参数：
(1)application范围内的参数，存放在servletcontext中，在web.xml中配置如下：
<context-param> <param-name>configUrl</param-name> <param-value>avalible during application</param-value> </context-param>
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?? 用getServletContext().getInitParameter("configUrl"))获取
(2)servlet内的初始化参数，，在web.xml中配置如下：
<servlet> <servlet-name>MainServlet</servlet-name> <servlet-class>com.wes.controller.MainServlet</servlet-class> <init-param> <param-name>param1</param-name> <param-value>avalible in servlet init()</param-value> </init-param> <load-on-startup>0</load-on-startup></servlet>
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只能在servlet的init()方法中用this.getInitParameter("param1"));得到
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使用ConfigurationFactory获取参数：
ConfigurationFactory(String configurationFileName) //The path to the configuration file //此处path是绝对路径，所以必须context.getRealPath(..);
?例子：
web.xml中：
<context-param> <param-name>configUrl</param-name> <param-value>WEB-INF/config.xml</param-value> </context-param>
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WEB-INF? -> config.xml中：
<?xml version="1.0" encoding="UTF-8"?> <configuration> <xml fileName="config/AbacusCfg.xml" /> <xml fileName="config/emailconfig.xml" /> <properties fileName="global.properties"/> </configuration>
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WEB-INF -> config -> emailconfig.xml:
<?xml version="1.0" encoding="UTF-8"?> <Config> <b2bEmail> <receiver>ko@techson.com.hk;</receiver> </b2bEmail> <packageb2cemail> af@techson.com.hk;alex@techson.com.hk </packageb2cemail> ... </Config>?
?启动时在contextInitialized()方法中获取配置文件：
this.context = sce.getServletContext(); //ServletContextEvent sce String path = this.context.getRealPath(this.context.getInitParameter("configUrl")); ConfigurationFactory factory = new ConfigurationFactory(path); Configuration config = factory.getConfiguration(); this.context.setAttribute(MyConstants.CONFIGURATION_KEY, config); this.context.setAttribute(MyConstants.GOOGLE_MAP_KEY, config.getString("packageb2cemail")); //String bkemail = config.getString("b2bEmail.receiver");?。。。
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