Java JNDI 与其他 Java 框架的兼容性：解析 Java JNDI 与其他 Java 框架的兼容性和协作

import javax.naming.Context;
import javax.naming.InitialContext;

public class JndiLdapExample {

public static void main(String[] args) {
try {
// Create a JNDI context
Context context = new InitialContext();

// Look up the LDAP server
Context ldapContext = (Context) context.lookup("ldap://localhost:389");

// Search the LDAP server for a user
String searchFilter = "(cn=John Doe)";
NamingEnumeration<SearchResult> searchResults = ldapContext.search("", searchFilter, null);

// Print the results of the search
while (searchResults.hasMore()) {
SearchResult searchResult = searchResults.next();
System.out.println(searchResult.getName());
}

} catch (NamingException e) {
e.printStackTrace();
}
}
}

import javax.naming.Context;
import javax.naming.InitialContext;

public class JndiDnsExample {

public static void main(String[] args) {
try {
// Create a JNDI context
Context context = new InitialContext();

// Look up the DNS server
Context dnsContext = (Context) context.lookup("dns://localhost:53");

// Resolve a hostname to an IP address
String hostname = "www.example.com";
String ipAddress = dnsContext.resolve(hostname).toString();

// Print the IP address
System.out.println(ipAddress);

} catch (NamingException e) {
e.printStackTrace();
}
}
}

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.Reference;
import java.rmi.Remote;

public class JndiRmiExample {

public static void main(String[] args) {
try {
// Create a JNDI context
Context context = new InitialContext();

// Create a reference to the RMI object
Reference reference = new Reference(Remote.class.getName(), "com.example.rmi.RemoteImpl", null);

// Bind the reference to the JNDI context
context.bind("rmi://localhost:1099/Remote", reference);

// Look up the RMI object from the JNDI context
Remote remoteObject = (Remote) context.lookup("rmi://localhost:1099/Remote");

// Invoke a method on the RMI object
String result = remoteObject.toString();

// Print the result
System.out.println(result);

} catch (NamingException e) {
e.printStackTrace();
}
}
}