开源b3log代码赏析

package org.b3log.latke;public class testEVN {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubLatkes.initRuntimeEnv();System.out.println(Latkes.getRuntimeEnv());}}

输出：

七月 15, 2013 7:55:52 上午 org.b3log.latke.Latkes initRuntimeEnv
INFO: Latke is running on [LOCAL] with mode [DEVELOPMENT]
七月 15, 2013 7:55:53 上午 org.b3log.latke.Latkes initRuntimeEnv
INFO: Runtime database is [MYSQL]
LOCAL

latke.properties:

# Configures the followings before deployserverScheme=httpserverHost=localhostserverPort=8080staticServerScheme=httpstaticServerHost=localhoststaticServerPort=8080# Note: The context path and static path should be "" if deploy app on ROOT. For other cases, starts with '/'#       and not ends with '/', for example, /blog contextPath=staticPath=#### Runtime Environment ####runtimeEnv=LOCAL#### Runtime Mode ####runtimeMode=DEVELOPMENT#runtimeMode=PRODUCTION#### Cache Implementation ##### Note: If the runtime environment is LOCAL, the cache will be 'LOCAL' alwayscache=LOCAL#### User Service Implementation ####userService=LOCAL#### Cache ####cache.maxPageCnt=128cache.maxDataCnt=128#### Static resource version ####staticResourceVersion=201211021410

public final class Latkes { /**     * Latke configurations (latke.properties).     */    private static final Properties LATKE_PROPS = new Properties();try {            final InputStream resourceAsStream = Latkes.class.getResourceAsStream("/local.properties");public static void initRuntimeEnv() {        LOGGER.log(Level.FINEST, "Initializes runtime environment from configuration file");        final String runtimeEnvValue = LATKE_PROPS.getProperty("runtimeEnv");        if (null != runtimeEnvValue) {            runtimeEnv = RuntimeEnv.valueOf(runtimeEnvValue);        }        if (null == runtimeEnv) {            LOGGER.log(Level.FINEST, "Initializes runtime environment by class loading");            try {                runtimeEnv = RuntimeEnv.GAE;                Class.forName("org.b3log.latke.repository.gae.GAERepository");            } catch (final ClassNotFoundException e) {                runtimeEnv = RuntimeEnv.LOCAL;            }        }        final String runtimeModeValue = LATKE_PROPS.getProperty("runtimeMode");        if (null != runtimeModeValue) {            runtimeMode = RuntimeMode.valueOf(runtimeModeValue);        } else {            LOGGER.log(Level.FINEST, "Can't parse runtime mode in latke.properties, default to [DEVELOPMENT]");            runtimeMode = RuntimeMode.DEVELOPMENT;        }        LOGGER.log(Level.INFO, "Latke is running on [{0}] with mode [{1}]", new Object[] {Latkes.getRuntimeEnv(), Latkes.getRuntimeMode()});        if (RuntimeEnv.LOCAL == runtimeEnv) {            // Read local database configurations            final RuntimeDatabase runtimeDatabase = getRuntimeDatabase();            LOGGER.log(Level.INFO, "Runtime database is [{0}]", runtimeDatabase);            if (RuntimeDatabase.H2 == runtimeDatabase) {                final String newTCPServer = Latkes.getLocalProperty("newTCPServer");                if ("true".equals(newTCPServer)) {                    LOGGER.log(Level.INFO, "Starting H2 TCP server");                    final String jdbcURL = Latkes.getLocalProperty("jdbc.URL");                    if (Strings.isEmptyOrNull(jdbcURL)) {                        throw new IllegalStateException("The jdbc.URL in local.properties is required");                    }                    final String[] parts = jdbcURL.split(":");                    if (parts.length != Integer.valueOf("5")/* CheckStyle.... */) {                        throw new IllegalStateException("jdbc.URL should like [jdbc:h2:tcp://localhost:8250/~/] (the port part is required)");                    }                    String port = parts[parts.length - 1];                    port = StringUtils.substringBefore(port, "/");                    LOGGER.log(Level.FINEST, "H2 TCP port [{0}]", port);                    try {                        h2 = Server.createTcpServer(new String[] {"-tcpPort", port, "-tcpAllowOthers"}).start();                    } catch (final SQLException e) {                        final String msg = "H2 TCP server create failed";                        LOGGER.log(Level.SEVERE, msg, e);                        throw new IllegalStateException(msg);                    }                    LOGGER.info("Started H2 TCP server");                }            }        }        locale = new Locale("en_US");    }

源代码：http://pan.baidu.com/share/link?shareid=1644033861&uk=3878681452