package sessionbeanexample;import javax.naming.*;import java.util.Properties;import javax.rmi.PortableRemoteObject;public class Enterprise1TestClient1 extends Object {  private static final String ERROR_NULL_REMOTE = "Remote interface reference is null.  It must be created by calling one of the Home interface methods first.";  private static final int MAX_OUTPUT_LINE_LENGTH = 100;  private boolean logging = true;  private Enterprise1Home enterprise1Home = null;  private Enterprise1 enterprise1 = null;  //Construct the EJB test client  public Enterprise1TestClient1() {    initialize();  }  public void initialize() {    long startTime = 0;    if (logging) {      log("Initializing bean access.");      startTime = System.currentTimeMillis();    }    try {      //get naming context      Context context = getInitialContext();      //look up jndi name      Object ref = context.lookup("Enterprise1");      //look up jndi name and cast to Home interface      enterprise1Home = (Enterprise1Home) PortableRemoteObject.narrow(ref, Enterprise1Home.class);      if (logging) {        long endTime = System.currentTimeMillis();        log("Succeeded initializing bean access through Home interface.");        log("Execution time: " + (endTime - startTime) + " ms.");      }    }    catch(Exception e) {      if (logging) {        log("Failed initializing bean access.");      }      e.printStackTrace();    }  }  private Context getInitialContext() throws Exception {    String url = "t3://hfy:7001";    String user = null;    String password = null;    Properties properties = null;    try {      properties = new Properties();      properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");      properties.put(Context.PROVIDER_URL, url);      if (user != null) {        properties.put(Context.SECURITY_PRINCIPAL, user);        properties.put(Context.SECURITY_CREDENTIALS, password == null ? "" : password);      }      return new InitialContext(properties);    }    catch(Exception e) {      log("Unable to connect to WebLogic server at " + url);      log("Please make sure that the server is running.");      throw e;    }  }  //----------------------------------------------------------------------------  // Methods that use Home interface methods to generate a Remote interface reference  //----------------------------------------------------------------------------  public Enterprise1 create() {    long startTime = 0;    if (logging) {      log("Calling create()");      startTime = System.currentTimeMillis();    }    try {      enterprise1 = enterprise1Home.create();      if (logging) {        long endTime = System.currentTimeMillis();        log("Succeeded: create()");        log("Execution time: " + (endTime - startTime) + " ms.");      }    }    catch(Exception e) {      if (logging) {        log("Failed: create()");      }      e.printStackTrace();    }    if (logging) {      log("Return value from create(): " + enterprise1 + ".");    }    return enterprise1;  }  //----------------------------------------------------------------------------  // Methods that use Remote interface methods to access data through the bean  //----------------------------------------------------------------------------  public String sayHello(String msg) {    String returnValue = "";    if (enterprise1 == null) {      System.out.println("Error in sayHello(): " + ERROR_NULL_REMOTE);      return returnValue;    }    long startTime = 0;    if (logging) {      log("Calling sayHello(" + msg + ")");      startTime = System.currentTimeMillis();    }    try {      returnValue = enterprise1.sayHello(msg);      if (logging) {        long endTime = System.currentTimeMillis();        log("Succeeded: sayHello(" + msg + ")");        log("Execution time: " + (endTime - startTime) + " ms.");      }    }    catch(Exception e) {      if (logging) {        log("Failed: sayHello(" + msg + ")");      }      e.printStackTrace();    }    if (logging) {      log("Return value from sayHello(" + msg + "): " + returnValue + ".");    }    return returnValue;  }  public void executeRemoteCallsWithDefaultArguments() {    if (enterprise1 == null) {      System.out.println("Error in executeRemoteCallsWithDefaultArguments(): " + ERROR_NULL_REMOTE);      return ;    }    sayHello("");  }  //----------------------------------------------------------------------------  // Utility Methods  //----------------------------------------------------------------------------  private void log(String message) {    if (message == null) {      System.out.println("-- null");      return ;    }    if (message.length() > MAX_OUTPUT_LINE_LENGTH) {      System.out.println("-- " + message.substring(0, MAX_OUTPUT_LINE_LENGTH) + " ...");    }    else {      System.out.println("-- " + message);    }  }  //Main method  public static void main(String[] args) {    Enterprise1TestClient1 client = new Enterprise1TestClient1();    try{      client.create();//建立遠程接口      System.out.println(client.sayHello("Demo one"));    }catch (Exception e)    {e.printStackTrace();}    // Use the client object to call one of the Home interface wrappers    // above, to create a Remote interface reference to the bean.    // If the return value is of the Remote interface type, you can use it    // to access the remote interface methods.  You can also just use the    // client object to call the Remote interface wrappers.  }}