求一个用Socket编写的服务器端响应多个客户端向服务上传文件的例子代码?

告诉你一个地方
www.google.com

Socket.getinput...明天我给你
我做过,记不得了

服务端用ServerSocket
client用Socket就行了

首先, 要定好通迅的协议, SERVER程序如下.import java.io.*;
import java.net.*;
import java.sql.*;
import java.util.Vector;
class ServerThread extends Thread{//继承线程
private Socket socket;//定义套接口
private BufferedReader in;//定义输入流
private PrintWriter out;//定义输出流
int no;//定义申请的jicq号码
public ServerThread(Socket s) throws IOException {//线程构造函数
   socket=s;//取得传递参数
  in=new BufferedReader(new InputStreamReader(socket.getInputStream()));//创建输入流
  out=new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())),true);//创建输出流
   start();//启动线程
   }public void run(){//线程监听函数
try{ while(true){
                    String str=in.readLine();//取得输入字符串
                    if(str.equals("end"))break;//如果是结束就关闭连接
       else if(str.equals("login")) {//如果是登录
          try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");//连接数据库
         Connection c=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
         String sql="select nickname,password from icq where icqno=?";
           //准备从数据库选择呢称和密码
  PreparedStatement prepare=c.prepareCall(sql);//设定数据库查寻条件
          String icqno=in.readLine();
                int g=Integer.parseInt(icqno);//取得输入的jicq号码
                 System.out.println(icqno);
                 String passwd=in.readLine().trim();//取得输入的密码
                 System.out.println(passwd);
                 prepare.clearParameters();
                 prepare.setInt(1,g);//设定参数
                 ResultSet r=prepare.executeQuery();//执行数据库查寻
                 if(r.next()){//以下比较输入的号码于密码是否相同
                     String pass=r.getString("password").trim();
                     System.out.println(pass);
                     if(passwd.regionMatches(0,pass,0,pass.length()))
{ out.println("ok");
//如果相同就告诉客户ok
//并且更新数据库用户为在线
//以及注册用户的ip 地址
                      //*************register ipaddress
                      String setip="update icq set ip=? where icqno=?";
                      PreparedStatement prest=c.prepareCall(setip);
                      prest.clearParameters();
                      prest.setString(1,socket.getInetAddress().getHostAddress());
                      prest.setInt(2,g);
                      int set=prest.executeUpdate();
                      System.out.println(set);
                      //*************ipaddress
                      //set status online
                      String status="update icq set status=1 where icqno=?";
                      PreparedStatement prest2=c.prepareCall(status);
                       prest2.clearParameters();
                       prest2.setInt(1,g);
                       int set2=prest2.executeUpdate();
                      System.out.println(set2);
                      //set online
}
//否者告诉客户失败
                      else out.println("false");r.close();c.close();}
                 else{ out.println("false");
                 System.out.println("false");
                r.close();
                c.close();}
                }catch (Exception e){e.printStackTrace();}
                socket.close();
                }//end login
             //登录结束
  //以下为处理客户的新建请求
else  if(str.equals("new")){
   try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");//连接数据库
        Connection c2=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
String newsql="insert into icq(nickname,password,email,info,place,pic) values(?,?,?,?,?,?)";
//准备接受用户的呢称，密码，email，个人资料，籍贯，头像等信息
       PreparedStatement prepare2=c2.prepareCall(newsql);
       String nickname=in.readLine().trim();
       String password=in.readLine().trim();
       String email=in.readLine().trim();
       String info=in.readLine().trim();
       String place=in.readLine().trim();
       int picindex=Integer.parseInt(in.readLine());
       prepare2.clearParameters();
       prepare2.setString(1,nickname);
       prepare2.setString(2,password);
       prepare2.setString(3,email);
       prepare2.setString(4,info);
       prepare2.setString(5,place);
       prepare2.setInt(6,picindex);
       int r3=prepare2.executeUpdate();//执行数据库添加
String sql2="select icqno from icq where nickname=?";
//以下告诉客户其注册的号码
       PreparedStatement prepare3=c2.prepareCall(sql2);
        prepare3.clearParameters();
       prepare3.setString(1,nickname);
       ResultSet r2=prepare3.executeQuery();
     while(r2.next()){
      //out.println(r2.getInt(1));
      no=r2.getInt(1);
      System.out.println(no);
     }
      out.println(no);
      out.println("ok");
c2.close();
//完毕
     }catch (Exception e){e.printStackTrace();out.println("false");}
     socket.close();
   }//end new
//新建用户结束
//以下处理用户查找好友
else if(str.equals("find")){
try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c3=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
  //以下连接数据库，并且返回其他用户的呢称，性别，籍贯，个人资料等信息
     String find="select nickname,sex,place,ip,email,info from icq";
    Statement st=c3.createStatement();
    ResultSet result=st.executeQuery(find);
     while(result.next()){
     out.println(result.getString("nickname"));
     out.println(result.getString("sex"));
     out.println(result.getString("place"));
     out.println(result.getString("ip"));
      out.println(result.getString("email"));
       out.println(result.getString("info"));
     }//while end
     out.println("over");
     ////////GET ICQNO
     int d,x;
     boolean y;
     //以下返回用户的jicq号码，头像号，及是否在线
     ResultSet iset=st.executeQuery("select icqno,pic,status from icq");
     while(iset.next()){
     d=iset.getInt("icqno");
     out.println(d);
     x=iset.getInt("pic");//pic info
     out.println(x);
     y=iset.getBoolean("status");
      if (y){out.println("1");}
           else {out.println("0");}
      //System.out.println(d);
     }
    // end send jicqno
     iset.close();
     /////////icqno end
      c3.close();result.close();
}catch (Exception e){e.printStackTrace();System.out.println("false");}
//socket.close();
}//end find
//查找好友结束
//以下处理用户登录时读取其好友资料
else if(str.equals("friend")){
try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c4=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
//以下连接好友表，返回用户的好友名单
     String friend="select friend from friend where icqno=?";
     PreparedStatement prepare4=c4.prepareCall(friend);
        prepare4.clearParameters();
         int icqno=Integer.parseInt(in.readLine());
         System.out.println("icqno="+icqno);
         prepare4.setInt(1,icqno);
       ResultSet r4=prepare4.executeQuery();
       Vector friendno=new Vector();//该矢量保存好友号码
        while(r4.next()){
      friendno.add(new Integer(r4.getInt(1)));
     }
//read friend info
//以下告诉客户其好友的呢称，号码，ip地址，状态，头像，个人资料等信息
    out.println(friendno.size());
          for(int i=0;i<friendno.size();i++){
         String friendinfo="select nickname,icqno,ip,status,pic,email,info from icq where icqno=?";
      PreparedStatement prepare5=c4.prepareCall(friendinfo);

prepare5.clearParameters();
       prepare5.setObject(1,friendno.get(i));
      ResultSet r5=prepare5.executeQuery();
      boolean status;
         while(r5.next()){
       out.println(r5.getString("nickname"));
           out.println(r5.getInt("icqno"));
           out.println(r5.getString("ip"));
         status=r5.getBoolean("status");
         if (status)out.println("1");
           else {out.println("0");}
        out.println(r5.getInt("pic"));
        out.println(r5.getString("email"));
        out.println(r5.getString("info"));
     } //while
     r5.close();
}//for
//发送完毕
     out.println("over");
     System.out.println("over");
      c4.close();r4.close();
}catch (Exception e){e.printStackTrace();e.getMessage();System.out.println("false");}
//socket.close();
}//end friend
//读取好友信息完毕
//以下处理用户添加好友
else if(str.equals("addfriend")){
System.out.println("add");
try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c6=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
//连接数据库，根据接受的用户号码及好友号码向好友表添加记录
        int friendicqno=Integer.parseInt(in.readLine());
          System.out.println(friendicqno);
         int myicqno=Integer.parseInt(in.readLine());
            System.out.println(myicqno);
            String addfriend="insert into friend values(?,?)";
             PreparedStatement prepare6=c6.prepareCall(addfriend);
      prepare6.clearParameters();
       prepare6.setInt(1,myicqno);
       prepare6.setInt(2,friendicqno);
       int  r6=0;
      r6=prepare6.executeUpdate();
      if(r6==1) System.out.println("ok  addfrien");
      else  System.out.println("false addfriend");}catch (Exception e){e.printStackTrace();System.out.println("false");}//socket.close();
System.out.println("over addfriend");
}//end addfriend
//用户添加好友结束
//add new friend who add me
//以下处理其他用户如果加我，我就加他
else if(str.equals("addnewfriend")){
System.out.println("add");
try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c6=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
  //连接数据库，根据接受的用户号码及好友号码向好友表添加记录
        int friendicqno=Integer.parseInt(in.readLine());
          System.out.println(friendicqno);
         int myicqno=Integer.parseInt(in.readLine());
            System.out.println(myicqno);
            String addfriend="insert into friend values(?,?)";
             PreparedStatement prepare6=c6.prepareCall(addfriend);
      prepare6.clearParameters();
       prepare6.setInt(1,myicqno);
       prepare6.setInt(2,friendicqno);
       int  r6=0;
      r6=prepare6.executeUpdate();
      if(r6==1) System.out.println("ok  addfrien");
      else  System.out.println("false addfriend");String friendinfo="select nickname,icqno,ip,status,pic,email,info from icq where icqno=?";
//如果成功，就向用户传递好友的基本信息，比如呢称等
      PreparedStatement prepare5=c6.prepareCall(friendinfo);
      prepare5.clearParameters();
       prepare5.setInt(1,friendicqno);
      ResultSet r5=prepare5.executeQuery();
      boolean status;
         while(r5.next()){
         System.out.println("dsf");
       out.println(r5.getString("nickname"));
           out.println(r5.getInt("icqno"));
           out.println(r5.getString("ip"));
         status=r5.getBoolean("status");
         if (status)out.println("1");
           else {out.println("0");}
        out.println(r5.getInt("pic"));
        out.println(r5.getString("email"));
        out.println(r5.getString("info"));
     } //while
       out.println("over");
     r5.close();
     c6.close();
}catch (Exception e){e.printStackTrace();System.out.println("false");}
System.out.println("over addnewfriend");
}//end addfriend
//结束处理其他用户如果加我，我就加他
//delete friend
//以下执行用户删除好友
else if(str.equals("delfriend")){
System.out.println("del");
try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c7=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
//连接数据库，根据接受的用户号码及好友号码向好友表删除记录
        int friendicqno=Integer.parseInt(in.readLine());
          System.out.println(friendicqno);
         int myicqno=Integer.parseInt(in.readLine());
            System.out.println(myicqno);
            String addfriend="delete from friend where icqno=? and friend=?";
             PreparedStatement prepare7=c7.prepareCall(addfriend);
      prepare7.clearParameters();
       prepare7.setInt(1,myicqno);
       prepare7.setInt(2,friendicqno);
       int  r7=0;
      r7=prepare7.executeUpdate();
      if(r7==1) System.out.println("ok  delfrien");//成功
      else  System.out.println("false delfriend");//失败
}catch (Exception e){e.printStackTrace();System.out.println("del false");}
}//end delete friend
//执行用户删除好友结束
//以下处理用户退出程序
else if(str.equals("logout")){
try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c8=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
  //连接数据库，根据接受的用户号码，将其状态字段设为0，及ip地址设为空
         int myicqno=Integer.parseInt(in.readLine());
            System.out.println(myicqno);
             String status="update icq set status=0 , ip=' ' where icqno=?";
                      PreparedStatement prest8=c8.prepareCall(status);
                       prest8.clearParameters();
                       prest8.setInt(1,myicqno);
                   int r8=prest8.executeUpdate();
                     if(r8==1) System.out.println("ok  logout");
      else  System.out.println("false logout");
}catch (Exception e){e.printStackTrace();System.out.println("logout false");}
}//logout end
//处理用户退出程序结束
//get who add me as friend
//以下处理那些人加了我为好友，以便上线通知他们
else if(str.equals("getwhoaddme")){
System.out.println("getwhoaddme");
try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c9=DriverManager.getConnection("jdbc:odbc:javaicq","sa","123");
//连接数据库，根据我的号码，从好友表中选择谁加了我
        int myicqno=Integer.parseInt(in.readLine());
            System.out.println(myicqno);
            String getwhoaddme="select icqno from friend where friend=?";
             PreparedStatement prepare6=c9.prepareCall(getwhoaddme);
      prepare6.clearParameters();
       prepare6.setInt(1,myicqno);
      ResultSet r6=prepare6.executeQuery();
    Vector who=new Vector();
        while(r6.next()){
      who.add(new Integer(r6.getInt(1)));
   }//end while

//然后告诉这些好友的ip地址，然后发给用户以便告诉其他客户我上线了
    for(int i=0;i<who.size();i++){
     String whoinfo="select ip from icq where icqno=? and status=1";
      PreparedStatement prepare=c9.prepareCall(whoinfo);
      prepare.clearParameters();
       prepare.setObject(1,who.get(i));
      ResultSet r=prepare.executeQuery();
       while(r.next()){
         out.println(r.getString("ip"));
            } //while
           r.close();
         }//for
     out.println("over");
     System.out.println("over");
      c9.close();r6.close();
}catch (Exception e){e.printStackTrace();System.out.println("false");}
}//end get who add me as friend
//处理上线结束
   System.out.println("Echo ing :"+str);
    }  System.out.println("Close...");
      }catch(IOException e){}//捕或异常
      finally {try{socket.close();}
                     catch(IOException e){}
    }
  }
}
public class Server{//主服务器类
public static void main(String args[])throws IOException{
ServerSocket s=new ServerSocket(8080);//在8080端口创建套接口
System.out.println("Server start.."+s+"~");
try{
     while(true){Socket socket=s.accept();//无限监听客户的请求
                      System.out.println("Connectino accept:"+socket);
                  try{new ServerThread(socket);//创建新线程
                  }catch(IOException e){socket.close();}
                }
      }finally{s.close();}//捕或异常
    }
}//服务器程序结束
最后可以再写一个客户端程序和他通迅

太复杂了吧,我看不懂
等待 yaoqiong(云) 的例子代码

偶也要一份，能给偶一份吗？
[email protected]
先谢谢了

调试易

求一个用Socket编写的服务器端响应多个客户端向服务上传文件的例子代码?

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