WebContainerUtil.java

package com.rambo.tools;

/**
 * Description:判断当前 web 容器工具
 */
public class WebContainerUtil {
    private static WebContainerUtil _instance = new WebContainerUtil();
    private String _serverId;
    private Boolean _geronimo;
    private Boolean _glassfish;
    private Boolean _jBoss;
    private Boolean _jetty;
    private Boolean _jonas;
    private Boolean _oc4j;
    private Boolean _resin;
    private Boolean _tomcat;
    private Boolean _webLogic;
    private Boolean _webSphere;

    public static final String GERONIMO_ID = "geronimo";
    public static final String GLASSFISH_ID = "glassfish";
    public static final String JBOSS_ID = "jboss";
    public static final String JETTY_ID = "jetty";
    public static final String JONAS_ID = "jonas";
    public static final String OC4J_ID = "oc4j";
    public static final String RESIN_ID = "resin";
    public static final String TOMCAT_ID = "tomcat";
    public static final String WEBLOGIC_ID = "weblogic";
    public static final String WEBSPHERE_ID = "websphere";

    public static String getServerId() {
        WebContainerUtil sd = _instance;
        if (sd._serverId == null) {
            if (isGeronimo()) {
                sd._serverId = "geronimo";
            } else if (isGlassfish()) {
                sd._serverId = "glassfish";
            } else if (isJBoss()) {
                sd._serverId = "jboss";
            } else if (isJOnAS()) {
                sd._serverId = "jonas";
            } else if (isOC4J()) {
                sd._serverId = "oc4j";
            } else if (isResin()) {
                sd._serverId = "resin";
            } else if (isWebLogic()) {
                sd._serverId = "weblogic";
            } else if (isWebSphere()) {
                sd._serverId = "websphere";
            }
            if (isJetty()) {
                if (sd._serverId == null) {
                    sd._serverId = "jetty";
                } else {
                    sd._serverId += "-jetty";
                }
            } else if (isTomcat()) {
                if (sd._serverId == null) {
                    sd._serverId = "tomcat";
                } else {
                    sd._serverId += "-tomcat";
                }
            }
            if (sd._serverId == null) {
                throw new RuntimeException("Server is not supported");
            }
        }
        return sd._serverId;
    }

    public static boolean isGeronimo() {
        WebContainerUtil sd = _instance;
        if (sd._geronimo == null) {
            sd._geronimo = _detect("/org/apache/geronimo/system/main/Daemon.class");
        }
        return sd._geronimo.booleanValue();
    }

    public static boolean isGlassfish() {
        WebContainerUtil sd = _instance;
        if (sd._glassfish == null) {
            String value = System.getProperty("com.sun.aas.instanceRoot");
            if (value != null) {
                sd._glassfish = Boolean.TRUE;
            } else {
                sd._glassfish = Boolean.FALSE;
            }
        }
        return sd._glassfish.booleanValue();
    }

    public static boolean isJBoss() {
        WebContainerUtil sd = _instance;
        if (sd._jBoss == null) {
            sd._jBoss = _detect("/org/jboss/Main.class");
        }
        return sd._jBoss.booleanValue();
    }

    public static boolean isJetty() {
        WebContainerUtil sd = _instance;
        if (sd._jetty == null) {
            sd._jetty = _detect("/org/mortbay/jetty/Server.class");
        }
        return sd._jetty.booleanValue();
    }

    public static boolean isJOnAS() {
        WebContainerUtil sd = _instance;
        if (sd._jonas == null) {
            sd._jonas = _detect("/org/objectweb/jonas/server/Server.class");
        }
        return sd._jonas.booleanValue();
    }

    public static boolean isOC4J() {
        WebContainerUtil sd = _instance;
        if (sd._oc4j == null) {
            sd._oc4j = _detect("oracle.oc4j.util.ClassUtils");
        }
        return sd._oc4j.booleanValue();
    }

    public static boolean isResin() {
        WebContainerUtil sd = _instance;
        if (sd._resin == null) {
            sd._resin = _detect("/com/caucho/server/resin/Resin.class");
        }
        return sd._resin.booleanValue();
    }

    public static boolean isSupportsComet() {
        return false;
    }

    public static boolean isTomcat() {
        WebContainerUtil sd = _instance;
        if (sd._tomcat == null) {
            sd._tomcat = _detect("/org/apache/catalina/startup/Bootstrap.class");
        }
        if (sd._tomcat == null) {
            sd._tomcat = _detect("/org/apache/catalina/startup/Embedded.class");
        }
        return sd._tomcat.booleanValue();
    }

    public static boolean isWebLogic() {
        WebContainerUtil sd = _instance;
        if (sd._webLogic == null) {
            sd._webLogic = _detect("/weblogic/Server.class");
        }
        return sd._webLogic.booleanValue();
    }

    public static boolean isWebSphere() {
        WebContainerUtil sd = _instance;
        if (sd._webSphere == null) {
            sd._webSphere = _detect("/com/ibm/websphere/product/VersionInfo.class");
        }
        return sd._webSphere.booleanValue();
    }

    private static Boolean _detect(String className) {
        try {
            ClassLoader.getSystemClassLoader().loadClass(className);
            return Boolean.TRUE;
        } catch (ClassNotFoundException cnfe) {
            WebContainerUtil sd = _instance;

            Class<?> c = sd.getClass();
            if (c.getResource(className) != null) {
                return Boolean.TRUE;
            }
        }
        return Boolean.FALSE;
    }

    public static void main(String[] args) {
        System.out.println(WebContainerUtil.getServerId());
    }
}