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Editorial Team
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Asked: 2026-06-17T21:32:55+00:00

i am trying to encrypt password for server.xml using RealmBase into Tomcat7 through below

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i am trying to encrypt password for server.xml using RealmBase
into Tomcat7 through below command:

java -cp bin\tomcat-juli.jar;lib\catalina.jar;lib\tomcat-util.jar; org.apache.catalina.realm.RealmBase -a SHA passwd

and I am facing below error on executing the comman:

C:\Program Files\Apache Software Foundation\Tomcat 7.0>java -cp bin\tomcat-juli.jar;lib\catalina.jar;lib\tomcat-util.jar; org.apache.catalina.realm.RealmBase -a  MD5 passwd
Exception in thread "main" java.lang.NoClassDefFoundError: javax/servlet/http/HttpServletRequest
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at java.security.SecureClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.access$100(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.getMethod0(Unknown Source)
        at java.lang.Class.getMethod(Unknown Source)
        at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.servlet.http.HttpServletRequest
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 18 more

C:\Program Files\Apache Software Foundation\Tomcat 7.0>
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1 Answer

  1. Editorial Team

    Try including servlet-api.jar as well.

    java -cp bin\tomcat-juli.jar;lib\catalina.jar;lib\tomcat-util.jar;lib\servlet-api.jar org.apache.catalina.realm.RealmBase -a SHA passwd

    EDIT

    After trying to run this myself, there was yet another class missing. Instead of including every JAR in the classpath manually, I decided it would be easier to just include them all with lib\*. Try this…it works for me!

    java -cp bin\tomcat-juli.jar;lib\* org.apache.catalina.realm.RealmBase -a SHA passwd
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