java socket发送和接收多条数据的情况怎么解决

2009-11-04 01:30:40 877 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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。。。。。。。。。

for (int j = 0; j < list_day.size(); j++) {

                            String day = (String) list_day.get(j);

                            String apwork = (String) list_apwork.get(j);

                            String pmwork = (String) list_pmwork.get(j);

                            String scheme = (String) list_scheme.get(j);

                            String sw = day + "#" + apwork + "#" + pmwork + "#"

                                    + scheme;

                            System.out.println(sw);

                            System.out.println("-------------------------");

                            BufferedWriter bw = new BufferedWriter(

                                    new OutputStreamWriter(socket

                                            .getOutputStream()));

                            bw.write(sw + "\r\n\r\n");

                            bw.flush();

                        }

。。。。。。。。。。。。。

服务器上从数据库取得的数据，在for循环中的打印可以看到都有的，但是在接收的客户端那却只能取得第一条的数据或者是N条的第一条数据，应该如何写，才能在客户端取得这些不同的多条数据呢？
这个到底是服务器取得的数据没能全部传出去，只能传出去一条即第一条数据的缘故呢？
还是客户端没有正常读取数据的缘故呢？？

...全文

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lqsmn613 2009-11-04

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Client：



package test;



import java.io.*;

import java.net.*;



public class Client {



	public static void main(String args[]) {

		Socket socket = null;

		try {

			socket = new Socket("10.10.9.222", 6666);



			BufferedReader sin = new BufferedReader(new InputStreamReader(

					System.in));

			PrintWriter os = new PrintWriter(socket.getOutputStream());

			String client_line = null;

			client_line = sin.readLine();

			os.println(client_line + "\r\n\r\n");

			os.flush();



			System.out.println("Client:" + client_line);



			// 从服务端程序接收数据

			

			while (true) {

				InputStream ips = socket.getInputStream();

				InputStreamReader ipsr = new InputStreamReader(ips);

				BufferedReader br = new BufferedReader(ipsr);

				String s = null;

				s = br.readLine();

				while (!s.equals("bye")) {

					String str[] = s.split("#");



					String day = str[0];

					String apwork = str[1];

					String pmwork = str[2];

					String scheme = str[3];



					System.out.println("day:" + day);

					System.out.println("apwork:" + apwork);

					System.out.println("pmwork:" + pmwork);

					System.out.println("scheme:" + scheme);

				}

				System.out.println("Server:" + s);

				System.out.println("------------------------------");

			}

		} catch (UnknownHostException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

		try {

			socket.close();

		} catch (IOException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

		// 向服务端程序发送数据

		// OutputStream ops = socket.getOutputStream();

		// OutputStreamWriter opsw = new OutputStreamWriter(ops);

		// BufferedWriter bw = new BufferedWriter(opsw);

		// bw.write("yy88\r\n\r\n");

		// bw.flush();

	}

}

lqsmn613 2009-11-04

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这样吧，我还是把Server和Client的代码都贴出来吧，大家帮忙试试，看看有什么办法可以实现我需要的东西，谢谢啦！这两个是另外写的两个测试用的，大家把ip和数据库改下就好了。再谢！
Server：



package test;



import java.io.*;

import java.net.*;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;



import java.io.UnsupportedEncodingException;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

import java.util.Map;



import sun.misc.BASE64Encoder;



public class Server {



	List list_day = new ArrayList();



	List list_apwork = new ArrayList();



	List list_pmwork = new ArrayList();



	List list_scheme = new ArrayList();



	public void login() {

		ServerSocket server = null;

		Socket socket = null;

		String employeeid = null;



		try {

			server = new ServerSocket(6666);

			while (true) {

				employeeid = null;

				socket = server.accept();

				String client_line = null;

				BufferedReader br = new BufferedReader(new InputStreamReader(

						socket.getInputStream()));

				client_line = br.readLine();

				String server_line = null;

				String employee_name = null;

				boolean bb = false;



				System.out.println("client_line:" + client_line);

				String str[] = client_line.split("#");

				String name = str[0];

				String pwd = str[1];



				System.out.println("-----------------------------");

				System.out.println(name);

				System.out.println(pwd);

				System.out.println("-----------------------------");



				String pwd_md5 = null;

				try {

					MessageDigest md5 = MessageDigest.getInstance("MD5");

					BASE64Encoder base64en = new BASE64Encoder();

					pwd_md5 = base64en

							.encode(md5.digest(pwd.getBytes("utf-8")));

				} catch (NoSuchAlgorithmException e1) {

					e1.printStackTrace();

				} catch (UnsupportedEncodingException e1) {

					e1.printStackTrace();

				}

				System.out.println(pwd_md5);

				try {

					DB1 db = new DB1();

					ResultSet rst = db

							.qu("select * from t_acl_user where username = '"

									+ name + "'");

					while (rst.next()) {

						employeeid = rst.getString("employeeid");

						System.out.println(employeeid);

						server_line = rst.getString("password");

						System.out.println("server_line:" + server_line);

						bb = true;

					}

					rst.close();

					db.close();

				} catch (SQLException e) {

					e.printStackTrace();

				}

				System.out.println(employeeid);

				System.out.println("-----------------------");

				if (bb == false) {

					BufferedWriter bw = new BufferedWriter(

							new OutputStreamWriter(socket.getOutputStream()));

					bw.write("查无此号" + "\r\n\r\n");

					bw.flush();

				} else if (bb == true) {

					if (pwd_md5.equals(server_line)) {

						Date now_date = new Date();

						int now_year = now_date.getYear() + 1900;

						int now_month = now_date.getMonth();

						String ss = now_year + "-" + now_month;

						DB1 db = new DB1();

						ResultSet rst;

						try {

							rst = db

									.qu("select apwork,pmwork,scheme,day(commentdate) as day from t_day_comment where employeeid ='"

											+ employeeid

											+ "' and cast(year(commentdate) as varchar) + "

											+ "'-' + cast(month(commentdate) as varchar) = '"

											+ ss + "' order by day");

							list_day = new ArrayList();

							list_apwork = new ArrayList();

							list_pmwork = new ArrayList();

							list_scheme = new ArrayList();

							while (rst.next()) {

								list_day.add(rst.getString("day"));

								list_apwork.add(rst.getString("apwork"));

								list_pmwork.add(rst.getString("pmwork"));

								list_scheme.add(rst.getString("scheme"));

							}

						} catch (SQLException e) {

							e.printStackTrace();

						}



						BufferedWriter bw = new BufferedWriter(

								new OutputStreamWriter(socket

										.getOutputStream()));

						for (int j = 0; j < list_day.size(); j++) {

							String day = (String) list_day.get(j);

							String apwork = (String) list_apwork.get(j);

							String pmwork = (String) list_pmwork.get(j);

							String scheme = (String) list_scheme.get(j);

							String sw = day + "#" + apwork + "#" + pmwork + "#"

									+ scheme;

							System.out.println(sw);

							System.out.println("-------------------------");

							

							bw.write(sw + "\r\n\r\n");

							bw.flush();

						}

						

						bw.write("bye" + "\r\n\r\n");

						bw.flush();

					} else if (!pwd_md5.equals(server_line)) {

						BufferedWriter bw = new BufferedWriter(

								new OutputStreamWriter(socket.getOutputStream()));

						bw.write("密码错误" + "\r\n\r\n");

						bw.flush();

					}

				}



			}

		} catch (IOException e) {

			e.printStackTrace();

		}

		try {

			socket.close();

			server.close();

		} catch (IOException e) {

			e.printStackTrace();

		}



	}



	public static void main(String args[]) {

		Server server = new Server();

		server.login();

	}

}



class DB1 {

	Connection con;



	Statement stt;



	public void begin() throws SQLException {

		if (con != null || stt != null) {

			this.close();

		}

		try {

			Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

			con = DriverManager.getConnection(

					"jdbc:sqlserver://10.10.1.188:1433; DatabaseName=znoa",

					"sa", "soft8099");

			stt = con.createStatement();

		} catch (ClassNotFoundException e) {

			e.printStackTrace();

		} catch (SQLException e1) {

			e1.printStackTrace();

		}



	}



	public ResultSet qu(String sql) throws SQLException {

		this.begin();

		return stt.executeQuery(sql);

	}



	public boolean cun(String sql) throws SQLException {

		this.begin();

		return stt.execute(sql);

	}



	public int update(String sql) throws SQLException {

		this.begin();

		return stt.executeUpdate(sql);

	}



	public void close() throws SQLException {

		stt.close();

		con.close();

	}



}

liangwansheng 2009-11-04

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这地方学过，不过很长时间没用了，忘了。帮顶一下。

lqsmn613 2009-11-04

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[Quote=引用 1 楼 java2000_net 的回复:]
你先搞好协议。
另外给个建议，客户端用2个线程
1 专门负责发送数据给服务器端
2 专门负责接收服务器端发来的数据，一直读取，没数据时会自动阻塞的
[/Quote]
线程，我明白的。至于协议，我那个应该是Tcp/Ip的吧。
这个东西没弄过，所以我现在写的都是根据一些网上的相关例子来写的，代码中也是通过ip地址来连接的哦。那应该就是Tcp/Ip协议的吧。
建议是不错，可是我的问题目前是想要解决哦。

老紫竹 2009-11-04

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你先搞好协议。
另外给个建议，客户端用2个线程
1 专门负责发送数据给服务器端
2 专门负责接收服务器端发来的数据，一直读取，没数据时会自动阻塞的

java socket发送和接收多条数据的情况怎么解决

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