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()){
- path = this.getServletContext().getRealPath("/")+"data\\"+userId+".xls";
- }else if(ServerDetector.isWebLogic()){
- path = this.getServletContext().getRealPath("/")+"\\data\\"+userId+".xls";
- }