在你的应用中判断所在的应用服务器类型
在不同的应用服务器中，所用的相对路径有所不同，只有区分开所用的应用服务器，才能正确地应用的你路径。ServerDetector.java很好的解决了这个问题。

import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;public class ServerDetector {public static final String GERONIMO_CLASS ="/org/apache/geronimo/system/main/Daemon.class";public static final String JBOSS_CLASS = "/org/jboss/Main.class";public static final String JETTY_CLASS = "/org/mortbay/jetty/Server.class";public static final String JONAS_CLASS ="/org/objectweb/jonas/server/Server.class";public static final String OC4J_CLASS ="/oracle/jsp/oc4jutil/Oc4jUtil.class";public static final String ORION_CLASS ="/com/evermind/server/ApplicationServer.class";public static final String PRAMATI_CLASS = "/com/pramati/Server.class";public static final String RESIN_CLASS ="/com/caucho/server/resin/Resin.class";public static final String REXIP_CLASS = "/com/tcc/Main.class";public static final String SUN7_CLASS ="/com/iplanet/ias/tools/cli/IasAdminMain.class";public static final String SUN8_CLASS ="/com/sun/enterprise/cli/framework/CLIMain.class";public static final String TOMCAT_CLASS ="/org/apache/catalina/startup/Bootstrap.class";public static final String WEBLOGIC_CLASS = "/weblogic/Server.class";public static final String WEBSPHERE_CLASS ="/com/ibm/websphere/product/VersionInfo.class";public static String getServerId() {ServerDetector sd = _instance;if (sd._serverId == null) {if (ServerDetector.isGeronimo()) {sd._serverId = "geronimo";}else if (ServerDetector.isJBoss()) {sd._serverId = "jboss";}else if (ServerDetector.isJOnAS()) {sd._serverId = "jonas";}else if (ServerDetector.isOC4J()) {sd._serverId = "oc4j";}else if (ServerDetector.isOrion()) {sd._serverId = "orion";}else if (ServerDetector.isResin()) {sd._serverId = "resin";}else if (ServerDetector.isWebLogic()) {sd._serverId = "weblogic";}else if (ServerDetector.isWebSphere()) {sd._serverId = "websphere";}if (ServerDetector.isJetty()) {if (sd._serverId == null) {sd._serverId = "jetty";}else {sd._serverId += "-jetty";}}else if (ServerDetector.isTomcat()) {if (sd._serverId == null) {sd._serverId = "tomcat";}else {sd._serverId += "-tomcat";}}if (_log.isInfoEnabled()) {_log.info("Detected server " + sd._serverId);}if (sd._serverId == null) {throw new RuntimeException("Server is not supported");}}return sd._serverId;}public static boolean isGeronimo() {ServerDetector sd = _instance;if (sd._geronimo == null) {Class c = sd.getClass();if (c.getResource(GERONIMO_CLASS) != null) {sd._geronimo = Boolean.TRUE;}else {sd._geronimo = Boolean.FALSE;}}return sd._geronimo.booleanValue();}public static boolean isJBoss() {ServerDetector sd = _instance;if (sd._jBoss == null) {Class c = sd.getClass();if (c.getResource(JBOSS_CLASS) != null) {sd._jBoss = Boolean.TRUE;}else {sd._jBoss = Boolean.FALSE;}}return sd._jBoss.booleanValue();}public static boolean isJetty() {ServerDetector sd = _instance;if (sd._jetty == null) {Class c = sd.getClass();if (c.getResource(JETTY_CLASS) != null) {sd._jetty = Boolean.TRUE;}else {sd._jetty = Boolean.FALSE;}}return sd._jetty.booleanValue();}public static boolean isJOnAS() {ServerDetector sd = _instance;if (sd._jonas == null) {Class c = sd.getClass();if (c.getResource(JONAS_CLASS) != null) {sd._jonas = Boolean.TRUE;}else {sd._jonas = Boolean.FALSE;}}return sd._jonas.booleanValue();}public static boolean isOC4J() {ServerDetector sd = _instance;if (sd._oc4j == null) {Class c = sd.getClass();if (c.getResource(OC4J_CLASS) != null) {sd._oc4j = Boolean.TRUE;}else {sd._oc4j = Boolean.FALSE;}}return sd._oc4j.booleanValue();}public static boolean isOrion() {ServerDetector sd = _instance;if (sd._orion == null) {Class c = sd.getClass();if (c.getResource(ORION_CLASS) != null) {sd._orion = Boolean.TRUE;}else {sd._orion = Boolean.FALSE;}}return sd._orion.booleanValue();}public static boolean isPramati() {ServerDetector sd = _instance;if (sd._pramati == null) {Class c = sd.getClass();if (c.getResource(PRAMATI_CLASS) != null) {sd._pramati = Boolean.TRUE;}else {sd._pramati = Boolean.FALSE;}}return sd._pramati.booleanValue();}public static boolean isResin() {ServerDetector sd = _instance;if (sd._resin == null) {Class c = sd.getClass();if (c.getResource(RESIN_CLASS) != null) {sd._resin = Boolean.TRUE;}else {sd._resin = Boolean.FALSE;}}return sd._resin.booleanValue();}public static boolean isRexIP() {ServerDetector sd = _instance;if (sd._rexIP == null) {Class c = sd.getClass();if (c.getResource(REXIP_CLASS) != null) {sd._rexIP = Boolean.TRUE;}else {sd._rexIP = Boolean.FALSE;}}return sd._rexIP.booleanValue();}public static boolean isSun() {if (isSun7() || isSun8()) {return true;}else {return false;}}public static boolean isSun7() {ServerDetector sd = _instance;if (sd._sun7 == null) {Class c = sd.getClass();if (c.getResource(SUN7_CLASS) != null) {sd._sun7 = Boolean.TRUE;}else {sd._sun7 = Boolean.FALSE;}}return sd._sun7.booleanValue();}public static boolean isSun8() {ServerDetector sd = _instance;if (sd._sun8 == null) {Class c = sd.getClass();if (c.getResource(SUN8_CLASS) != null) {sd._sun8 = Boolean.TRUE;}else {sd._sun8 = Boolean.FALSE;}}return sd._sun8.booleanValue();}public static boolean isTomcat() {ServerDetector sd = _instance;if (sd._tomcat == null) {Class c = sd.getClass();if (c.getResource(TOMCAT_CLASS) != null) {sd._tomcat = Boolean.TRUE;}else {sd._tomcat = Boolean.FALSE;}}return sd._tomcat.booleanValue();}public static boolean isWebLogic() {ServerDetector sd = _instance;if (sd._webLogic == null) {Class c = sd.getClass();if (c.getResource(WEBLOGIC_CLASS) != null) {sd._webLogic = Boolean.TRUE;}else {sd._webLogic = Boolean.FALSE;}}return sd._webLogic.booleanValue();}public static boolean isWebSphere() {ServerDetector sd = _instance;if (sd._webSphere == null) {Class c = sd.getClass();if (c.getResource(WEBSPHERE_CLASS) != null) {sd._webSphere = Boolean.TRUE;}else {sd._webSphere = Boolean.FALSE;}}return sd._webSphere.booleanValue();}private ServerDetector() {}private static Log _log = LogFactory.getLog(ServerDetector.class);private static ServerDetector _instance = new ServerDetector();private String _serverId;private Boolean _geronimo;private Boolean _jBoss;private Boolean _jetty;private Boolean _jonas;private Boolean _oc4j;private Boolean _orion;private Boolean _pramati;private Boolean _resin;private Boolean _rexIP;private Boolean _sun7;private Boolean _sun8;private Boolean _tomcat;private Boolean _webLogic;private Boolean _webSphere;}

比如tomcat与weblogic之下的区别：

if(ServerDetector.isTomcat()){//tomcat server path = this.getServletContext().getRealPath("/")+"data\\"+userId+".xls";}else if(ServerDetector.isWebLogic()){//weblogic serverpath = this.getServletContext().getRealPath("/")+"\\data\\"+userId+".xls";    }

1 楼 likeblood 2008-11-20 我觉得应该有获得这类数据的meta，如同获得数据库类型的一样