看看这段代码哪里有问题?
package com.packages;
import org.jivesoftware.smack.Chat;
import org.jivesoftware.smack.ChatManager;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.MessageListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Message;
public class GtalkJabberDemo {
public static void main(String args[]) {
try {
ConnectionConfiguration config = new ConnectionConfiguration("www.host.cn", 5522);
config.setSASLAuthenticationEnabled(true);
XMPPConnection con = new XMPPConnection(config.getServiceName());
con.connect();
con.login("mandiq", "admin");
ChatManager chatmanager = con.getChatManager();
Chat chat = chatmanager.createChat("[email protected]", new MessageListener() {
public void processMessage(Chat chat, Message message) {
System.out.println("Received message: " + message);
try {
chat.sendMessage(message.getBody());
} catch (XMPPException e) {
e.printStackTrace();
}
}
});
chat.sendMessage("Howdy!");
con.disconnect();
} catch (XMPPException e) { }
}
}
它的错误提示:
java.lang.UnsupportedClassVersionError: org/jivesoftware/smack/XMPPException (Unsupported major.minor version 49.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
Exception in thread "main"
package com.packages;
import org.jivesoftware.smack.Chat;
import org.jivesoftware.smack.ChatManager;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.MessageListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Message;
public class GtalkJabberDemo {
public static void main(String args[]) {
try {
ConnectionConfiguration config = new ConnectionConfiguration("www.host.cn", 5522);
config.setSASLAuthenticationEnabled(true);
XMPPConnection con = new XMPPConnection(config.getServiceName());
con.connect();
con.login("mandiq", "admin");
ChatManager chatmanager = con.getChatManager();
Chat chat = chatmanager.createChat("[email protected]", new MessageListener() {
public void processMessage(Chat chat, Message message) {
System.out.println("Received message: " + message);
try {
chat.sendMessage(message.getBody());
} catch (XMPPException e) {
e.printStackTrace();
}
}
});
chat.sendMessage("Howdy!");
con.disconnect();
} catch (XMPPException e) { }
}
}
它的错误提示:
java.lang.UnsupportedClassVersionError: org/jivesoftware/smack/XMPPException (Unsupported major.minor version 49.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
Exception in thread "main"
解决方案 »
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