Java/JNDI LDAP/DirContext
Содержание
Display dir context
<source lang="java">
import java.util.Enumeration; import java.util.Hashtable; import javax.naming.directory.Attribute; import javax.naming.directory.Attributes; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; public class Main {
public static void main(String args[]) throws Exception {
Hashtable<String, String> env = new Hashtable<String, String>();
env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
env.put("java.naming.provider.url", "dns://123.123.123.123/");
String dns_attributes[] = { "MX", "A", "HINFO" };
DirContext ctx = new InitialDirContext(env);
Attributes attrsl = ctx.getAttributes("http://www.yourserver.ru", dns_attributes);
for (int z = 0; z < dns_attributes.length; z++) {
Attribute attr = attrsl.get(dns_attributes[z]);
if (attr != null) {
System.out.print(dns_attributes[z] + ": ");
for (Enumeration vals = attr.getAll(); vals.hasMoreElements();) {
System.out.println(vals.nextElement());
}
}
}
}
}
</source>
how to use a timeout when creating a connection
<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 a timeout when creating a connection. * * usage: java Timeout */
class Timeout {
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");
// Specify timeout to be 5 seconds
env.put("com.sun.jndi.ldap.connect.timeout", "5000");
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>
Read Timeout Test
<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.io.BufferedInputStream; import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; public class ReadTimeoutTest {
public static void main(String[] args) throws Exception {
boolean passed = false;
// Set up the environment for creating the initial context
Hashtable env = new Hashtable(11);
env
.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory");
env.put("com.sun.jndi.ldap.read.timeout", "1000");
env.put(Context.PROVIDER_URL, "ldap://localhost:2001");
Server s = new Server();
try {
// start the server
s.start();
// Create initial context
DirContext ctx = new InitialDirContext(env);
System.out.println("LDAP Client: Connected to the Server");
// Close the context when we"re done
ctx.close();
} catch (NamingException e) {
e.printStackTrace();
}
s.interrupt();
}
static class Server extends Thread {
static int serverPort = 2001;
Server() {
}
public void run() {
try {
ServerSocket serverSock = new ServerSocket(serverPort);
Socket socket = serverSock.accept();
System.out.println("Server: Connection accepted");
BufferedInputStream bin = new BufferedInputStream(socket
.getInputStream());
while (true) {
bin.read();
}
} catch (IOException e) {
// ignore
}
}
}
}
</source>
<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; /**
* Shows contexts that originally shared the same connection using different * connection. * * usage: java NewConn */
class NewConn {
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 (first connection)
DirContext ctx = new InitialDirContext(env);
// Get a copy of the same context
DirContext ctx2 = (DirContext) ctx.lookup("");
// Change authentication properties in ctx2
ctx2.addToEnvironment(Context.SECURITY_PRINCIPAL,
"cn=C. User, ou=NewHires, o=JNDITutorial");
ctx2.addToEnvironment(Context.SECURITY_CREDENTIALS, "mysecret");
// Method on ctx2 will use new connection
System.out.println(ctx2.getAttributes("ou=NewHires"));
// Close the contexts when we"re done
ctx.close();
ctx2.close();
} catch (NamingException e) {
e.printStackTrace();
}
}
}
</source>
<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; /**
* Shows contexts that share the same connection. * * usage: java Shared */
class Shared {
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);
// Get a copy of the same context
Context ctx2 = (Context) ctx.lookup("");
// Get a child context
Context ctx3 = (Context) ctx.lookup("ou=NewHires");
// do something useful with ctx, ctx2, ctx3
// Close the contexts when we"re done
ctx.close();
ctx2.close();
ctx3.close();
} catch (NamingException e) {
e.printStackTrace();
}
}
}
</source>
