java怎么控制电脑关机_JAVA手机控制电脑关机
我们用javamail实现
看代码
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
import java.io.*;
public class POPMail2
{
public static void main(String args[])
{
try{
String popServer="pop3.sohu.com";//邮箱，可自己更改
String popUser="********";//***是代表你邮箱的帐号
String popPassword="***";//你邮箱的密码
receive(popServer,popUser,popPassword);
}
catch(Exception e){
System.out.println(e);
}
System.exit(0);
}
public static void receive(String popServer,String popUser,String popPassword)
{
Store store=null;
Folder folder=null;
try{
//get session
Properties props=System.getProperties();
Session session=Session.getDefaultInstance(props,null);
//use pop3 to connect the server
store = session.getStore("pop3");
store.connect(popServer,popUser,popPassword);
//get default file
folder =store.getDefaultFolder();
if(folder == null) throw new Exception("no default folder");
//if is inbox
folder=folder.getFolder("INBOX");
if(folder == null) throw new Exception("no pop3 inbox");
//use read_only method to open the inbox
folder.open(Folder.READ_ONLY);
//get file information ,get mail list
Message[] msgs=folder.getMessages();
// for(int msgNum=0;msgNum// printMessage(msgs[msgNum]);
int t=msgs.length;
System.out.println("当前有"+msgs.length+"封邮件");
if(folder!=null) folder.close(false);
if(store!=null) store.close();
while(true)
{
/**/ folder.open(Folder.READ_ONLY);
msgs=folder.getMessages();
System.out.println("现在有"+msgs.length+"封邮件");
if(msgs.length>t)
{
t++;
System.out.println("有新邮件到达");
printMessage(msgs[msgs.length-1]);//只读取最顶端的信
if(folder!=null) folder.close(false);
if(store!=null) store.close();
// break;
}
else
{
System.out.println("没有新邮件到达");
if(folder!=null) folder.close(false);
if(store!=null) store.close();
Thread.sleep(10000);
}
}
}catch(Exception e){
e.printStackTrace();
}
finally
{
try{
if(folder!=null) folder.close(false);
if(store!=null) store.close();
}catch(Exception e){
e.printStackTrace();
}
}
}
public static void printMessage(Message message){
try{
//get mail address
String from=((InternetAddress)message.getFrom()[0]).getPersonal();
if(from==null) from=((InternetAddress)message.getFrom()
[0]).getAddress();
System.out.println("邮件来自于: "+from);
String subject=message.getSubject();
System.out.println("邮件主题是: "+subject);
if(subject.compareTo("shutdown")==0)
{
System.out.println("发现shutdown命令，调用系统命令
shutdown");
String cmd="shutdown -s -t 300";
//如需多个参数，可以改成String[]cmd,然后cmd[i]放置命令参数。
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(cmd);
}
}catch(Exception e)
{
e.printStackTrace();
}
}
}
【责编:Ken】
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