Struts example source code file (SecurityClassLoad.java)

This example Struts source code file (SecurityClassLoad.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

classnotfoundexception, classnotfoundexception, privilegedgetpagecontext, privilegedgetpagecontext, privilegedintrospecthelper, privilegedreleasepagecontext, privilegedreleasepagecontext, securityclassload, securityclassload, string

The Struts SecurityClassLoad.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.apache.struts2.jasper.security;

/**
 * Static class used to preload java classes when using the
 * Java SecurityManager so that the defineClassInPackage
 * RuntimePermission does not trigger an AccessControlException.
 *
 * @author Jean-Francois Arcand
 */

public final class SecurityClassLoad {

    private static org.apache.juli.logging.Log log=
        org.apache.juli.logging.LogFactory.getLog( SecurityClassLoad.class );

    public static void securityClassLoad(ClassLoader loader){

        if( System.getSecurityManager() == null ){
            return;
        }

        String basePackage = "org.apache.struts2.jasper.";
        try {
            loader.loadClass( basePackage +
                "runtime.JspFactoryImpl$PrivilegedGetPageContext");
            loader.loadClass( basePackage +
                "runtime.JspFactoryImpl$PrivilegedReleasePageContext");

            loader.loadClass( basePackage +
                "runtime.JspRuntimeLibrary");
            loader.loadClass( basePackage +
                "runtime.JspRuntimeLibrary$PrivilegedIntrospectHelper");
            
            loader.loadClass( basePackage +
                "runtime.ServletResponseWrapperInclude");
            loader.loadClass( basePackage +
                "runtime.TagHandlerPool");
            loader.loadClass( basePackage +
                "runtime.JspFragmentHelper");

            loader.loadClass( basePackage +
                "runtime.ProtectedFunctionMapper");
            loader.loadClass( basePackage +
                "runtime.ProtectedFunctionMapper$1");
            loader.loadClass( basePackage +
                "runtime.ProtectedFunctionMapper$2"); 
            loader.loadClass( basePackage +
                "runtime.ProtectedFunctionMapper$3");
            loader.loadClass( basePackage +
                "runtime.ProtectedFunctionMapper$4"); 

            loader.loadClass( basePackage +
                "runtime.PageContextImpl");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$1");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$2");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$3");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$4");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$5");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$6");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$7");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$8");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$9");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$10");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$11");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$12");      
            loader.loadClass( basePackage +
                "runtime.PageContextImpl$13");      

            loader.loadClass( basePackage +
                "runtime.JspContextWrapper");   

            loader.loadClass( basePackage +
                "servlet.JspServletWrapper");

            loader.loadClass( basePackage +
                "runtime.JspWriterImpl$1");
        } catch (ClassNotFoundException ex) {
            log.error("SecurityClassLoad", ex);
        }
    }
}