Smack 抛出“java.lang.ClassNotFoundException：org.xmlpull.v1.XmlPullParserFactory：”
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Smack throws "java.lang.ClassNotFoundException: org.xmlpull.v1.XmlPullParserFactory:"
提问by Nick
So im using Smack to run my chat bot for league of legends, however I can't even get the bot to show up because of a missing class error that I can't seem to figure out. Code and error below, Thanks for any help, -Nick
所以我使用 Smack 来运行我的英雄联盟聊天机器人，但是我什至无法让机器人出现，因为我似乎无法弄清楚缺少类错误。下面的代码和错误，感谢您的帮助，-尼克
Also: yes, this code was taken from an example because when I tried it myself I still got the same error.
另外：是的，此代码取自示例，因为当我自己尝试时，我仍然遇到相同的错误。
package com.nickparks.bot;
import java.util.*;
import java.io.*;
import org.jivesoftware.smack.*;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
public class JabberSmackAPI implements MessageListener{
XMPPConnection connection;
public void login(String userName, String password) throws XMPPException
{
ConnectionConfiguration config = new ConnectionConfiguration("chat.na1.lol.riotgames.com",5223);
connection = new XMPPTCPConnection(config);
try {
connection.connect();
connection.login(userName, password, "xiff");
} catch (SmackException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void displayBuddyList()
{
Roster roster = connection.getRoster();
Collection<RosterEntry> entries = roster.getEntries();
System.out.println("\n\n" + entries.size() + " buddy(ies):");
for(RosterEntry r:entries)
{
System.out.println(r.getUser());
}
}
public void disconnect()
{
try {
connection.disconnect();
} catch (SmackException.NotConnectedException e) {
e.printStackTrace();
}
}
public void processMessage(Chat chat, Message message)
{
if(message.getType() == Message.Type.chat)
System.out.println(chat.getParticipant() + " says: " + message.getBody());
}
public static void main(String args[]) throws XMPPException, IOException
{
// declare variables
JabberSmackAPI c = new JabberSmackAPI();
// Enter your login information here
c.login("bot", "Password");
c.displayBuddyList();
System.out.println("-----");
System.out.println("Who do you want to talk to? - Type contacts full email address:");
String talkTo = br.readLine();
System.out.println("-----");
System.out.println("All messages will be sent to " + talkTo);
System.out.println("Enter your message in the console:");
System.out.println("-----\n");
while( !(msg=br.readLine()).equals("bye"))
{
System.out.println("test");
}
c.disconnect();
System.exit(0);
}
}
And here's the error I get:
这是我得到的错误：
Exception in thread "main" java.lang.NoClassDefFoundError: org/xmlpull/v1/XmlPullParserFactory at org.jivesoftware.smack.SmackConfiguration.processConfigFile(SmackConfiguration.java:321)
atorg.jivesoftware.smack.SmackConfiguration.processConfigFile(SmackConfiguration.java:316)
at org.jivesoftware.smack.SmackConfiguration.<clinit>(SmackConfiguration.java:148)
at org.jivesoftware.smack.ConnectionConfiguration.<init>(ConnectionConfiguration.java:65)
at com.nickparks.bot.JabberSmackAPI.login(JabberSmackAPI.java:16)
at com.nickparks.bot.JabberSmackAPI.main(JabberSmackAPI.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.ClassNotFoundException: org.xmlpull.v1.XmlPullParserFactory
at java.net.URLClassLoader.run(URLClassLoader.java:366)
at java.net.URLClassLoader.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 11 more
采纳答案by Flow
You need to have XPP3 (XML Pull Parser 3)in your classpath. Smack 4 does no longer bundle it (unlike Smack 3).
您的类路径中需要有XPP3（XML Pull Parser 3）。Smack 4 不再捆绑它（与 Smack 3 不同）。
I also recommend using a build system with dependency resolution like maven or gradle, which would automatically fetch the required dependencies.
我还建议使用具有依赖项解析的构建系统，例如 maven 或 gradle，它会自动获取所需的依赖项。
