一、代码
TCPTest1类
package com.day0320_1;
import org.junit.jupiter.api.Test;
import java.io.*;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
public class TCPTest1 {
@Test
public void client() {
Socket socket = null;
OutputStream os = null;
try {
InetAddress inet =InetAddress.getByName("127.0.0.1");
socket = new Socket(inet,8899);
os = socket.getOutputStream();
os.write("你好,我是客户端mm".getBytes());
} catch (IOException e) {
e.printStackTrace();
} finally {
if(os!=null)
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
if(socket!=null)
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Test
public void server(){
ServerSocket ss = null;
Socket socket = null;
InputStream is= null;
ByteArrayOutputStream baos= null;
try {
ss = new ServerSocket(8899);
socket = ss.accept();
is = socket.getInputStream();
baos = new ByteArrayOutputStream();
byte[] buffer=new byte[5];
int len;
while((len=is.read(buffer))!=-1){
baos.write(buffer,0,len);
}
System.out.println(baos.toString());
System.out.println("收到了来自于:"+socket.getInetAddress().getHostAddress()+"的数据");
} catch (IOException e) {
e.printStackTrace();
} finally {
if(baos!=null) {
try {
baos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(is!=null){
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(socket!=null){
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(ss!=null){
try {
ss.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
TCPTest2类
package com.day0320_1;
import org.junit.jupiter.api.Test;
import java.io.*;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
public class TCPTest2 {
@Test
public void client()throws IOException {
Socket socket=new Socket(InetAddress.getByName("127.0.0.1"),9090);
OutputStream os=socket.getOutputStream();
FileInputStream fis=new FileInputStream(new File("图片.png"));
byte[] buffer =new byte[1024];
int len;
while ((len=fis.read(buffer))!=-1){
os.write(buffer,0,len);
}
fis.close();
os.close();
socket.close();
}
@Test
public void server()throws IOException{
ServerSocket ss = new ServerSocket(9090);
Socket socket=ss.accept();
InputStream is = socket.getInputStream();
FileOutputStream fos=new FileOutputStream(new File("新图片.png"));
byte[] buffer=new byte[1024];
int len;
while ((len=is.read(buffer))!=-1){
fos.write(buffer,0,len);
}
fos.close();
is.close();
socket.close();
ss.close();
}
}
TCPTest3类
package com.day0320_1;
import org.junit.jupiter.api.Test;
import java.io.*;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
public class TCPTest3 {
@Test
public void client()throws IOException {
Socket socket=new Socket(InetAddress.getByName("127.0.0.1"),9090);
OutputStream os=socket.getOutputStream();
FileInputStream fis=new FileInputStream(new File("图片.png"));
byte[] buffer =new byte[1024];
int len;
while ((len=fis.read(buffer))!=-1){
os.write(buffer,0,len);
}
socket.shutdownOutput();
InputStream is = socket.getInputStream();
ByteArrayOutputStream baos=new ByteArrayOutputStream();
byte[] buffer1= new byte[1024];
int len1;
while ((len1= is.read(buffer1))!=-1){
baos.write(buffer1,0,len1);
}
System.out.println(baos.toString());
fis.close();
os.close();
socket.close();
baos.close();
}
@Test
public void server()throws IOException{
ServerSocket ss = new ServerSocket(9090);
Socket socket=ss.accept();
InputStream is = socket.getInputStream();
FileOutputStream fos=new FileOutputStream(new File("新图片1.png"));
byte[] buffer=new byte[1024];
int len;
while ((len=is.read(buffer))!=-1){
fos.write(buffer,0,len);
}
System.out.println("图片传输完成");
OutputStream os = socket.getOutputStream();
os.write("你好,美女,照片我已收到,非常漂亮".getBytes());
fos.close();
is.close();
socket.close();
ss.close();
os.close();
}
}
二、图片