关于IO 和网络编程的问题 - 黑马程序员技术交流社区

package com.itheima;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class Test9_ServerSocket {
public static void main(String[] args) throws IOException {
//创建文件对象来并确定客户端上传的文件的存放地址
File file = new File("..\\exam_入学\\文件\\复制.doc");
//利用文件输出流在文件对象上写数据
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
} catch (FileNotFoundException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
//创建服务端的Socket流
ServerSocket ss = null;
try {
ss = new ServerSocket(10000);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//获取客户端的Socket流对象
Socket s = null;
try {
s = ss.accept();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//获取Socket流字符输入流，用来接受数据
InputStream bs = null;
try {
bs = s.getInputStream();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
byte[] b = new byte[1024];
int len = 0;
while(!((len = bs.read(b)) == -1)){
fos.write(b,0,len);
}
OutputStream os = s.getOutputStream();
os.write("传输成功......".getBytes());
try {
s.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
ss.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

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package com.itheima;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
public class Test9_Socket {
public static void main(String[] args) throws Exception {
//创建文件对象
File file = new File("..\\exam_入学\\文件\\java面试宝典2013版.doc");
// File file = new File("D:\\1.txt");
//创建文件对象输入流并抛出异常
FileInputStream ios = null;
try {
ios = new FileInputStream(file);
} catch (FileNotFoundException e2) {
System.out.println("该文件不存在");
}
//因为服务端在本地主机上，所以要获取本地主机
InetAddress ia = null;
try {
ia = InetAddress.getLocalHost();
} catch (UnknownHostException e1) {
System.out.println("如果找不到 host 的任何 IP 地址");
}
//获取本地的IP地址
String ip = ia.getHostAddress();
//根据服务器的IP地址和端口，创建Socket流用来连接服务器并抛出异常
Socket s = null;
try {
s = new Socket(ip,10000);
} catch (UnknownHostException e1) {
System.out.println("如果找不到 host 的任何 IP 地址");
} catch (IOException e1) {
System.out.println("创建套接字时发生 I/O 错误");
}
//获取Socket流中的输出流，用来上传数据
OutputStream os = null;
try {
os = s.getOutputStream();
} catch (IOException e) {
System.out.println("创建输出流时发生 I/O 错误或者没有连接套接字");
}
//创建数组用来提高上传效率
byte[] b = new byte[1024];
int len = 0;
while(!((len = ios.read(b)) == -1)){
try {
os.write(b,0,len);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
byte[] b1 = new byte[1024];
int len1 = 0;
InputStream is = s.getInputStream();
len = is.read(b);
String text = new String(b1,0,len1);
System.out.println(text);
s.close();
}
}

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