Java by API/javax.naming/Context

Содержание

1 Context: addToEnvironment(String propName, Object propVal)
2 Context: close()
3 Context: createSubcontext(String name)
4 Context: destroySubcontext(String name)
5 Context: getNameInNamespace()
6 Context: getNameParser(String name)
7 Context.INITIAL_CONTEXT_FACTORY
8 Context: listBindings(String name)
9 Context: lookup(String name)
10 Context.PROVIDER_URL
11 Context: rename(String oldName, String newName)
12 Context.SECURITY_AUTHENTICATION
13 Context.SECURITY_CREDENTIALS
14 Context.SECURITY_PRINCIPAL
15 Context: unbind(String name)

Context: addToEnvironment(String propName, Object propVal)

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; /**

* Demonstrates how to use different authentication information for one context.
* 
* usage: java UseDiff
*/

class UseDiff {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
   // Authenticate as S. User and password "mysecret"
   env.put(Context.SECURITY_AUTHENTICATION, "simple");
   env.put(Context.SECURITY_PRINCIPAL,
       "cn=S. User, ou=NewHires, o=JNDITutorial");
   env.put(Context.SECURITY_CREDENTIALS, "mysecret");
   try {
     // Create initial context
     DirContext ctx = new InitialDirContext(env);
     // do something useful with ctx
     System.out.println(ctx.lookup("ou=NewHires"));
     // Change to using no authentication
     ctx.addToEnvironment(Context.SECURITY_AUTHENTICATION, "none");
     System.out.println(ctx.lookup("ou=NewHires"));
     // do something useful with ctx
     // Close the context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }

}

 </source>

Context: close()

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; /**

* Demonstrates how to enable connection pooling. Use debug option to observe
* connection usage.
* 
* usage: java -Dcom.sun.jndi.ldap.connect.pool.debug=fine UsePool
*/

class UsePool {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
   // Enable connection pooling
   env.put("com.sun.jndi.ldap.connect.pool", "true");
   try {
     // Create one initial context (Get connection from pool)
     DirContext ctx = new InitialDirContext(env);
     System.out.println(ctx.getAttributes("ou=NewHires"));
     // do something useful with ctx
     // Close the context when we"re done
     ctx.close(); // Return connection to pool
     // Create another initial context (Get connection from pool)
     DirContext ctx2 = new InitialDirContext(env);
     System.out.println(ctx2.getAttributes("ou=People"));
     // do something useful with ctx2
     // Close the context when we"re done
     ctx2.close(); // Return connection to pool
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }

}

 </source>

Context: createSubcontext(String name)

   <source lang="java">

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   // Create a subcontext.
   Context childCtx = ctx.createSubcontext("child");
   // Destroy the subcontext.
   ctx.destroySubcontext("child");
   Context obj = (Context) childCtx.lookup("grandChild");
   String fullname = obj.getNameInNamespace();
 }

}

 </source>

Context: destroySubcontext(String name)

   <source lang="java">

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   // Create a subcontext.
   Context childCtx = ctx.createSubcontext("child");
   // Destroy the subcontext.
   ctx.destroySubcontext("child");
   Context obj = (Context) childCtx.lookup("grandChild");
   String fullname = obj.getNameInNamespace();
 }

}

 </source>

Context: getNameInNamespace()

   <source lang="java">

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   // Create a subcontext.
   Context childCtx = ctx.createSubcontext("child");
   // Destroy the subcontext.
   ctx.destroySubcontext("child");
   Context obj = (Context) childCtx.lookup("grandChild");
   String fullname = obj.getNameInNamespace();
 }

}

 </source>

Context: getNameParser(String name)

   <source lang="java">

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.Name; import javax.naming.NameParser; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   NameParser parser = ctx.getNameParser("");
   Name dn = parser.parse("cn=John, ou=People, o=JNDITutorial");
   dn.remove(1); 
   dn.add(0, "c=us"); 
   dn.add("cn=fs"); 
 }

}

 </source>

Context.INITIAL_CONTEXT_FACTORY

   <source lang="java">

import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.Properties; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import javax.sql.ConnectionPoolDataSource; import javax.sql.PooledConnection; public class PooledConnectionExample {

 public static void main(String[] args) {
   Connection connection = null;
   Statement statement = null;
   ResultSet resultSet = null;
   try {
     connection = getConnection();
     statement = connection.createStatement();
     String selectEmployeesSQL = "SELECT * FROM employees";
     resultSet = statement.executeQuery(selectEmployeesSQL);
     while (resultSet.next()) {
       printEmployee(resultSet);
     }
   } catch (Exception e) {
     e.printStackTrace();
   } finally {
     closeAll(resultSet, statement, connection);
   }
 }

//Obtain connection from pool

 private static Connection getConnection() throws NamingException, SQLException {
   InitialContext initCtx = createContext();
   String jndiName = "HrDS";
   ConnectionPoolDataSource dataSource = (ConnectionPoolDataSource) initCtx.lookup(jndiName);
   PooledConnection pooledConnection = dataSource.getPooledConnection();
   return pooledConnection.getConnection(); 
 }
 private static InitialContext createContext() throws NamingException {
   Properties env = new Properties();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.rmi.registry.RegistryContextFactory");
   env.put(Context.PROVIDER_URL, "rmi://localhost:1099");
   InitialContext context = new InitialContext(env);
   return context;
 }
 private static void printEmployee(ResultSet resultSet) throws SQLException {
   System.out.print(resultSet.getInt("employee_id"));
   System.out.print(", ");
   System.out.print(resultSet.getString("last_name"));
   System.out.print(", ");
   System.out.print(resultSet.getString("first_name"));
   System.out.print(", ");
   System.out.println(resultSet.getString("email"));
 }
 private static void closeAll(ResultSet resultSet, Statement statement, Connection connection) {
   if (resultSet != null) {
     try {
       resultSet.close();
     } catch (SQLException e) {
     } // nothing we can do
   }
   if (statement != null) {
     try {
       statement.close();
     } catch (SQLException e) {
     } // nothing we can do
   }
   if (connection != null) {
     try {
       connection.close();
     } catch (SQLException e) {
     } // nothing we can do
   }
 }

}

 </source>

Context: listBindings(String name)

   <source lang="java">

import java.io.IOException; import java.io.PrintWriter; import javax.naming.Binding; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingEnumeration; import javax.naming.NamingException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class EnvEntry extends HttpServlet {

 public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
     IOException {
   res.setContentType("text/plain");
   PrintWriter out = res.getWriter();
   try {
     Context initCtx = new InitialContext();
     NamingEnumeration e = initCtx.listBindings("java:comp/env");
     while (e.hasMore()) {
       Binding binding = (Binding) e.next();
       out.println("Name: " + binding.getName());
       out.println("Type: " + binding.getClassName());
       out.println("Value: " + binding.getObject());
       out.println();
     }
   } catch (NamingException e) {
     e.printStackTrace(out);
   }
 }

}

 </source>

Context: lookup(String name)

   <source lang="java">

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   // Create a subcontext.
   Context childCtx = ctx.createSubcontext("child");
   // Destroy the subcontext.
   ctx.destroySubcontext("child");
   Context obj = (Context) childCtx.lookup("grandChild");
   String fullname = obj.getNameInNamespace();
 }

}

 </source>

Context.PROVIDER_URL

   <source lang="java">

import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.Properties; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import javax.sql.ConnectionPoolDataSource; import javax.sql.PooledConnection; public class PooledConnectionExample {

 public static void main(String[] args) {
   Connection connection = null;
   Statement statement = null;
   ResultSet resultSet = null;
   try {
     connection = getConnection();
     statement = connection.createStatement();
     String selectEmployeesSQL = "SELECT * FROM employees";
     resultSet = statement.executeQuery(selectEmployeesSQL);
     while (resultSet.next()) {
       printEmployee(resultSet);
     }
   } catch (Exception e) {
     e.printStackTrace();
   } finally {
     closeAll(resultSet, statement, connection);
   }
 }

//Obtain connection from pool

 private static Connection getConnection() throws NamingException, SQLException {
   InitialContext initCtx = createContext();
   String jndiName = "HrDS";
   ConnectionPoolDataSource dataSource = (ConnectionPoolDataSource) initCtx.lookup(jndiName);
   PooledConnection pooledConnection = dataSource.getPooledConnection();
   return pooledConnection.getConnection(); 
 }
 private static InitialContext createContext() throws NamingException {
   Properties env = new Properties();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.rmi.registry.RegistryContextFactory");
   env.put(Context.PROVIDER_URL, "rmi://localhost:1099");
   InitialContext context = new InitialContext(env);
   return context;
 }
 private static void printEmployee(ResultSet resultSet) throws SQLException {
   System.out.print(resultSet.getInt("employee_id"));
   System.out.print(", ");
   System.out.print(resultSet.getString("last_name"));
   System.out.print(", ");
   System.out.print(resultSet.getString("first_name"));
   System.out.print(", ");
   System.out.println(resultSet.getString("email"));
 }
 private static void closeAll(ResultSet resultSet, Statement statement, Connection connection) {
   if (resultSet != null) {
     try {
       resultSet.close();
     } catch (SQLException e) {
     } // nothing we can do
   }
   if (statement != null) {
     try {
       statement.close();
     } catch (SQLException e) {
     } // nothing we can do
   }
   if (connection != null) {
     try {
       connection.close();
     } catch (SQLException e) {
     } // nothing we can do
   }
 }

}

 </source>

Context: rename(String oldName, String newName)

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; /**

* Demonstrates how to rename an entry to another part of the namespace.
* 
* usage: java RenameDiffParent
*/

class RenameDiffParent {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
   try {
     // Create initial context
     DirContext ctx = new InitialDirContext(env);
     // Perform rename
     ctx.rename("cn=C. User, ou=NewHires", "cn=C. User, ou=People");
     // Check that it worked
     System.out.println(ctx.lookup("cn=C. User, ou=People"));
     // Revert change
     ctx.rename("cn=C. User, ou=People", "cn=C. User, ou=NewHires");
     // Check that we are back at our original setup
     System.out.println(ctx.lookup("cn=C. User, ou=NewHires"));
     // Close the context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }

}

 </source>

Context.SECURITY_AUTHENTICATION

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; /**

* Demonstrates how failure to supply correct authentication information fails.
* 
* usage: java BadPasswd
*/

class BadPasswd {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
   // Authenticate as S. User and give incorrect password
   env.put(Context.SECURITY_AUTHENTICATION, "simple");
   env.put(Context.SECURITY_PRINCIPAL,
       "cn=S. User, ou=NewHires, o=JNDITutorial");
   env.put(Context.SECURITY_CREDENTIALS, "notmysecret");
   try {
     // Create initial context
     DirContext ctx = new InitialDirContext(env);
     System.out.println(ctx.lookup("ou=NewHires"));
     // do something useful with ctx
     // Close the context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }

}

 </source>

Context.SECURITY_CREDENTIALS

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; /**

* Demonstrates how failure to supply correct authentication information fails.
* 
* usage: java BadPasswd
*/

class BadPasswd {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
   // Authenticate as S. User and give incorrect password
   env.put(Context.SECURITY_AUTHENTICATION, "simple");
   env.put(Context.SECURITY_PRINCIPAL,
       "cn=S. User, ou=NewHires, o=JNDITutorial");
   env.put(Context.SECURITY_CREDENTIALS, "notmysecret");
   try {
     // Create initial context
     DirContext ctx = new InitialDirContext(env);
     System.out.println(ctx.lookup("ou=NewHires"));
     // do something useful with ctx
     // Close the context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }

}

 </source>

Context.SECURITY_PRINCIPAL

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Sun Microsystems nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; /**

* Demonstrates how failure to supply correct authentication information fails.
* 
* usage: java BadPasswd
*/

class BadPasswd {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
   // Authenticate as S. User and give incorrect password
   env.put(Context.SECURITY_AUTHENTICATION, "simple");
   env.put(Context.SECURITY_PRINCIPAL,
       "cn=S. User, ou=NewHires, o=JNDITutorial");
   env.put(Context.SECURITY_CREDENTIALS, "notmysecret");
   try {
     // Create initial context
     DirContext ctx = new InitialDirContext(env);
     System.out.println(ctx.lookup("ou=NewHires"));
     // do something useful with ctx
     // Close the context when we"re done
     ctx.close();
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }

}

 </source>

Context: unbind(String name)

   <source lang="java">

import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; public class Main {

 public static void main(String[] argv) throws Exception {
   String url = "iiop://localhost/";
   Hashtable<String, String> env = new Hashtable<String, String>();
   env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
   env.put(Context.PROVIDER_URL, url);
   Context ctx = new InitialContext(env);
   // Add a binding.
   ctx.bind("Name", null);
   // Replace a binding.
   ctx.rebind("Name", null);
   // Remove a binding.
   ctx.unbind("Name");
   // Rename a binding.
   ctx.rename("Name", "NewSample");
 }

}

 </source>

Java by API/javax.naming/Context

Содержание

Context: addToEnvironment(String propName, Object propVal)

Context: close()

Context: createSubcontext(String name)

Context: destroySubcontext(String name)

Context: getNameInNamespace()

Context: getNameParser(String name)

Context.INITIAL_CONTEXT_FACTORY

Context: listBindings(String name)

Context: lookup(String name)

Context.PROVIDER_URL

Context: rename(String oldName, String newName)

Context.SECURITY_AUTHENTICATION

Context.SECURITY_CREDENTIALS

Context.SECURITY_PRINCIPAL

Context: unbind(String name)

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