error：
dalvikvm Could not find class 'org.apache.commons.net.telnet.TelnetClient',
referenced from method com.test.telnet.TelnetUtil.
AndroidRuntime FATAL EXCEPTION: Thread-1263
AndroidRuntime java.lang.NoClassDefFoundError:
org.apache.commons.net.telnet.TelnetClient
AndroidRuntime at com.test.telnet.TelnetUtil.(TelnetUtil.java:9)
AndroidRuntime at com.test.main.MainActivity$2.run(MainActivity.java:46)
AndroidRuntime at java.lang.Thread.run(Thread.java:841)
source：
package com.test.telnet;
import java.io.InputStream;
import java.io.PrintStream;
import org.apache.commons.net.telnet.TelnetClient;
public class TelnetUtil {
private TelnetClient telnet = new TelnetClient();
private InputStream in;
private PrintStream out;
private String port;
private String ip;
public TelnetUtil(String ip, String port){
this.ip=ip;
this.port=port;
}
/**
* @return boolean 连接成功返回true，否则返回false
*/
public boolean connect() {
boolean isConnect = true;
try {
telnet.connect(ip, Integer.parseInt(port));
in = telnet.getInputStream();
out = new PrintStream(telnet.getOutputStream());
} catch (Exception e) {
isConnect = false;
e.printStackTrace();
return isConnect;
}
return isConnect;
}
protected void disconnect() {
try {
telnet.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}
public String readUtil() {
try {
StringBuffer sb = new StringBuffer();
char ch=0;
while (true) {
ch = (char) in.read();
sb.append(ch);
if(sb.length()>=512){ //----buffer size = 512*2 byte = 1 kB---
//synchronized block
return sb.toString();
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
private void write(String value) {
try {
out.println(value);
out.flush();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 向服务器发送命令
* @param string
*/
public String sendCommand(String command) {
try {
write(command);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
线程内调用：
TelnetUtil tu = new TelnetUtil("218.56.40.136","1602");
tu.connect();
tu.sendCommand("client");
res=tu.readUtil();
