类ServerInfo.java中加载properties文件如下: public class ServerInfo { // ------------------------------------------------------- Static Variables /** * The server information String with which we identify ourselves. */ private static String serverInfo = null; /** * The server built String. */ private static String serverBuilt = null; /** * The server's version number String. */ private static String serverNumber = null; static { try { InputStream is = ServerInfo.class.getResourceAsStream ("/org/apache/catalina/util/ServerInfo.properties"); Properties props = new Properties(); props.load(is); is.close(); serverInfo = props.getProperty("server.info"); serverBuilt = props.getProperty("server.built"); serverNumber = props.getProperty("server.number"); } catch (Throwable t) { ; } if (serverInfo == null) serverInfo = "Apache Tomcat"; if (serverBuilt == null) serverBuilt = "unknown"; if (serverNumber == null) serverNumber = "5.5.0.0"; } 接下来在此类中提供三个静态的方法来进行读取此key值的value /** * Return the server identification for this version of Tomcat. */ public static String getServerInfo() { return (serverInfo); } /** * Return the server built time for this version of Tomcat. */ public static String getServerBuilt() { return (serverBuilt); } /** * Return the server's version number. */ public static String getServerNumber() { return (serverNumber); } 使用如下: // Log our server identification information //System.out.println(ServerInfo.getServerInfo()); if(log.isInfoEnabled()) log.info( "Starting Servlet Engine: " + ServerInfo.getServerInfo());
tomcat源码中读取properties文件解读
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