ejb与ejb客户端运行在不同的java虚拟机?? 能不能说得清楚点,我是个初学j2ee的 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 在客户端改成 Remate 远程调用 应该把EJB改成远程调用就是了,我也才学没多久,帮你顶了 package ejbtest;import javax.naming.*;import java.util.Properties;import javax.rmi.PortableRemoteObject;import javax.ejb.Handle;import javax.ejb.EJBMetaData;import javax.ejb.HomeHandle;public class EnterpriseOneTestClient1 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 EnterpriseOneHome enterpriseOneHome = null; private EnterpriseOne enterpriseOne = null; //Construct the EJB test client public EnterpriseOneTestClient1() { 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("EnterpriseOne"); //look up jndi name and cast to Home interface enterpriseOneHome = (EnterpriseOneHome) PortableRemoteObject.narrow(ref, EnterpriseOneHome.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://computer-d8e6be: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 EnterpriseOne create() { long startTime = 0; if (logging) { log("Calling create()"); startTime = System.currentTimeMillis(); } try { enterpriseOne = enterpriseOneHome.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(): " + enterpriseOne + "."); } return enterpriseOne; } public void remove(Handle p0) { long startTime = 0; if (logging) { log("Calling remove(" + p0 + ")"); startTime = System.currentTimeMillis(); } try { enterpriseOneHome.remove(p0); if (logging) { long endTime = System.currentTimeMillis(); log("Succeeded: remove(" + p0 + ")"); log("Execution time: " + (endTime - startTime) + " ms."); } } catch(Exception e) { if (logging) { log("Failed: remove(" + p0 + ")"); } e.printStackTrace(); } } public void remove(Object p0) { long startTime = 0; if (logging) { log("Calling remove(" + p0 + ")"); startTime = System.currentTimeMillis(); } try { enterpriseOneHome.remove(p0); if (logging) { long endTime = System.currentTimeMillis(); log("Succeeded: remove(" + p0 + ")"); log("Execution time: " + (endTime - startTime) + " ms."); } } catch(Exception e) { if (logging) { log("Failed: remove(" + p0 + ")"); } e.printStackTrace(); } } public EJBMetaData getEJBMetaData() { EJBMetaData returnValue = null; long startTime = 0; if (logging) { log("Calling getEJBMetaData()"); startTime = System.currentTimeMillis(); } try { returnValue = enterpriseOneHome.getEJBMetaData(); if (logging) { long endTime = System.currentTimeMillis(); log("Succeeded: getEJBMetaData()"); log("Execution time: " + (endTime - startTime) + " ms."); } } catch(Exception e) { if (logging) { log("Failed: getEJBMetaData()"); } e.printStackTrace(); } if (logging) { log("Return value from getEJBMetaData(): " + returnValue + "."); } return returnValue; } public HomeHandle getHomeHandle() { HomeHandle returnValue = null; long startTime = 0; if (logging) { log("Calling getHomeHandle()"); startTime = System.currentTimeMillis(); } try { returnValue = enterpriseOneHome.getHomeHandle(); if (logging) { long endTime = System.currentTimeMillis(); log("Succeeded: getHomeHandle()"); log("Execution time: " + (endTime - startTime) + " ms."); } } catch(Exception e) { if (logging) { log("Failed: getHomeHandle()"); } e.printStackTrace(); } if (logging) { log("Return value from getHomeHandle(): " + returnValue + "."); } return returnValue; } //---------------------------------------------------------------------------- // Methods that use Remote interface methods to access data through the bean //---------------------------------------------------------------------------- public void test() { if (enterpriseOne == null) { System.out.println("Error in test(): " + ERROR_NULL_REMOTE); return ; } long startTime = 0; if (logging) { log("Calling test()"); startTime = System.currentTimeMillis(); } try { enterpriseOne.test(); if (logging) { long endTime = System.currentTimeMillis(); log("Succeeded: test()"); log("Execution time: " + (endTime - startTime) + " ms."); } } catch(Exception e) { if (logging) { log("Failed: test()"); } e.printStackTrace(); } } //---------------------------------------------------------------------------- // 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) { EnterpriseOneTestClient1 client = new EnterpriseOneTestClient1(); client.create(); client.test(); // 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. }} 请教:javax.mail.Message接收附件速度问题 Resin配置 找不到java.lang.Object 請高手們指點。感激不盡,在線等 急~~~~eclipse+xfire+spring+jetty HTTP ERROR: 404错误 spring security 100分 标签<html:form name属性问题> 菜鸟发问 struts初学,请struts高手不吝赐教 怎么用applet调用ejb的方法,不用servlet? 请问现在流行用J2EE做些什么? EJB部署 今天刚接触Struts,遇到了个问题,大家见笑。
import java.util.Properties;
import javax.rmi.PortableRemoteObject;
import javax.ejb.Handle;
import javax.ejb.EJBMetaData;
import javax.ejb.HomeHandle;public class EnterpriseOneTestClient1 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 EnterpriseOneHome enterpriseOneHome = null;
private EnterpriseOne enterpriseOne = null; //Construct the EJB test client
public EnterpriseOneTestClient1() {
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("EnterpriseOne");
//look up jndi name and cast to Home interface
enterpriseOneHome = (EnterpriseOneHome) PortableRemoteObject.narrow(ref, EnterpriseOneHome.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://computer-d8e6be: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 EnterpriseOne create() {
long startTime = 0;
if (logging) {
log("Calling create()");
startTime = System.currentTimeMillis();
}
try {
enterpriseOne = enterpriseOneHome.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(): " + enterpriseOne + ".");
}
return enterpriseOne;
} public void remove(Handle p0) {
long startTime = 0;
if (logging) {
log("Calling remove(" + p0 + ")");
startTime = System.currentTimeMillis();
} try {
enterpriseOneHome.remove(p0);
if (logging) {
long endTime = System.currentTimeMillis();
log("Succeeded: remove(" + p0 + ")");
log("Execution time: " + (endTime - startTime) + " ms.");
}
}
catch(Exception e) {
if (logging) {
log("Failed: remove(" + p0 + ")");
}
e.printStackTrace();
}
} public void remove(Object p0) {
long startTime = 0;
if (logging) {
log("Calling remove(" + p0 + ")");
startTime = System.currentTimeMillis();
} try {
enterpriseOneHome.remove(p0);
if (logging) {
long endTime = System.currentTimeMillis();
log("Succeeded: remove(" + p0 + ")");
log("Execution time: " + (endTime - startTime) + " ms.");
}
}
catch(Exception e) {
if (logging) {
log("Failed: remove(" + p0 + ")");
}
e.printStackTrace();
}
} public EJBMetaData getEJBMetaData() {
EJBMetaData returnValue = null; long startTime = 0;
if (logging) {
log("Calling getEJBMetaData()");
startTime = System.currentTimeMillis();
} try {
returnValue = enterpriseOneHome.getEJBMetaData();
if (logging) {
long endTime = System.currentTimeMillis();
log("Succeeded: getEJBMetaData()");
log("Execution time: " + (endTime - startTime) + " ms.");
}
}
catch(Exception e) {
if (logging) {
log("Failed: getEJBMetaData()");
}
e.printStackTrace();
} if (logging) {
log("Return value from getEJBMetaData(): " + returnValue + ".");
}
return returnValue;
} public HomeHandle getHomeHandle() {
HomeHandle returnValue = null; long startTime = 0;
if (logging) {
log("Calling getHomeHandle()");
startTime = System.currentTimeMillis();
} try {
returnValue = enterpriseOneHome.getHomeHandle();
if (logging) {
long endTime = System.currentTimeMillis();
log("Succeeded: getHomeHandle()");
log("Execution time: " + (endTime - startTime) + " ms.");
}
}
catch(Exception e) {
if (logging) {
log("Failed: getHomeHandle()");
}
e.printStackTrace();
} if (logging) {
log("Return value from getHomeHandle(): " + returnValue + ".");
}
return returnValue;
} //----------------------------------------------------------------------------
// Methods that use Remote interface methods to access data through the bean
//---------------------------------------------------------------------------- public void test() {
if (enterpriseOne == null) {
System.out.println("Error in test(): " + ERROR_NULL_REMOTE);
return ;
} long startTime = 0;
if (logging) {
log("Calling test()");
startTime = System.currentTimeMillis();
} try {
enterpriseOne.test();
if (logging) {
long endTime = System.currentTimeMillis();
log("Succeeded: test()");
log("Execution time: " + (endTime - startTime) + " ms.");
}
}
catch(Exception e) {
if (logging) {
log("Failed: test()");
}
e.printStackTrace();
}
} //----------------------------------------------------------------------------
// 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) {
EnterpriseOneTestClient1 client = new EnterpriseOneTestClient1();
client.create();
client.test();
// 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.
}
}