<%@ page import="java.io.*" %><%
Runtime runtime = Runtime.getRuntime();
Process process =null;
String line=null;
InputStream is =null;
InputStreamReader isr=null;
BufferedReader br =null;
String ip="你要ping的ip";
//自行修改上面的ip位址
try
{
process =runtime.exec("ping "+ip);
is = process.getInputStream();
isr=new InputStreamReader(is);
br =new BufferedReader(isr);
out.println("<pre>");
while( (line = br.readLine()) != null )
{
out.println(line);
out.flush();
}
out.println("</pre>");
is.close();
isr.close();
br.close();
}
catch(IOException e )
{
out.println(e);
runtime.exit(1);
}
%>
Runtime runtime = Runtime.getRuntime();
Process process =null;
String line=null;
InputStream is =null;
InputStreamReader isr=null;
BufferedReader br =null;
String ip="你要ping的ip";
//自行修改上面的ip位址
try
{
process =runtime.exec("ping "+ip);
is = process.getInputStream();
isr=new InputStreamReader(is);
br =new BufferedReader(isr);
out.println("<pre>");
while( (line = br.readLine()) != null )
{
out.println(line);
out.flush();
}
out.println("</pre>");
is.close();
isr.close();
br.close();
}
catch(IOException e )
{
out.println(e);
runtime.exit(1);
}
%>
import java.net.*;
import java.io.*;
import java.lang.*;
import java.sql.*;
import java.awt.*;class FilterThead{
public static void main(String[] arg){
int fromPort=0,toPort=0;
if(arg.length<2){
System.out.println("\r\n\t\t参数格式:\tfilter address [/a] [fromPort toPort]"+"\r\n\t\taddress:\t远程主机地址\r\n\t\tfrom:\t\t起始端口号\r\n\t\ttoPort:\t\t结束端口号\r\n\t\t备注:\t\tfromPort 与 toPort必需为数字型\r\n\t\t /a: \t\t加此参数为直接使用数据库中指定端口,用法简单。\r\n\t\t\t\t如:filter 127.0.0.1 /a");
System.exit(0);
}else if(arg.length==3)
{
try{
fromPort=Integer.parseInt(arg[1]);
toPort=Integer.parseInt(arg[2]);
if(fromPort<=0 || fromPort>toPort || toPort>=9999){
System.out.println("对不起,参数越界");
System.exit(0);
}
}catch(NumberFormatException e){
System.out.println("\r\n\t\t参数格式:\tfilter address [/a] [fromPort toPort]"+"\r\n\t\taddress:\t远程主机地址\r\n\t\tfrom:\t\t起始端口号\r\n\t\ttoPort:\t\t结束端口号\r\n\t\t备注:\t\tfromPort 与 toPort必需为数字型\r\n\t\t /a: \t\t加此参数为直接使用数据库中指定端口,用法简单。\r\n\t\t\t\t如:filter 127.0.0.1 /a");
System.exit(0);
}
for(int i=fromPort;i<toPort;i++){
try{
InetAddress address=InetAddress.getByName(arg[0]);
if(i==fromPort)
System.out.println("IP:"+address);
mythread st=new mythread(address,i);
st.start();
}catch(IOException e){
System.out.println("异常");
//System.err.println(e);
}
}
}else if(arg.length==2){
if(arg[1].equals("/a") || arg[1].equals("/A")){
Connection conn=null;
int nCounter=0;
try{
String url=new String();
url="jdbc:odbc:rule";
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
}catch(ClassNotFoundException e){
System.out.println("Class.forName 失败");
}
conn=DriverManager.getConnection(url);
Statement stmt=conn.createStatement();
String sql="select * from rule order by rule_id asc";
ResultSet rs=stmt.executeQuery(sql);
int strListAddress=0;
while(rs.next()){
int port=0;
strListAddress=strListAddress+1;
try{
port=Integer.parseInt(rs.getString("rule_title"));
InetAddress address=InetAddress.getByName(arg[0]);
if(strListAddress==1){
System.out.println("IP:"+address);
}
mythread st=new mythread(address,port);
st.start();
}catch(IOException e){
System.out.println("异常");
}
}}catch(SQLException ex){
System.out.println("数据连接失败");
ex=ex.getNextException();
}
}else
{
System.out.println("\r\n\t\t参数格式:\tfilter address fromPort toPort"+"\r\n\t\taddress:\t远程主机地址\r\n\t\tfrom:\t\t起始端口号\r\n\t\ttoPort:\t\t结束端口号\r\n\t\t备注:\t\tfromPort 与 toPort必需为数字型");
System.exit(0);
}
}
}
}
//****************************************************/
// 类名: mythread
// 功能: 继承Thread,用于传递参数,得到返回值
// 参数: int i 端口
//****************************************************/
class mythread extends Thread{
private int port;
private InetAddress myaddress;
public String strResult=new String();
public mythread(InetAddress address,int i){
myaddress=address;
port=i;
}public void run(){
try{
Socket socket = new Socket(myaddress,port);
System.out.println("第"+port+"端口已经扫描.......................打开!!");
}catch(IOException e){
//System.out.println("第"+port+"端口已经扫描...............关闭");
}
}public String rethread(){
return strResult;
}
}
请问public static void mian(String args[])中的args用什么用途啊
如fromPort=Integer.parseInt(arg[1]);
toPort=Integer.parseInt(arg[2]);
中的args[]?谢谢
是用来接收从命令行传递过来的参数的
arg[1] 表示第二个参数
arg[2] 表示第三个参数
依此类推