javasocket源碼
Ⅰ 用java編寫一個socket通信程序。
importjava.io.BufferedReader;
importjava.io.InputStreamReader;
importjava.net.ServerSocket;
importjava.net.Socket;
publicclassServer{
publicstaticvoidmain(String[]args){
ServerSocketss;
Sockets;
try{
ss=newServerSocket(8888);
s=ss.accept();
InputStreamReaderisr=newInputStreamReader(s.getInputStream());
BufferedReaderbr=newBufferedReader(isr);
System.out.println(br.readLine());
br.close();
isr.close();
}catch(Exceptione){
//TODOAuto-generatedcatchblock
e.printStackTrace();
}
}
}
importjava.io.PrintWriter;
importjava.net.Socket;
publicclassClient{
publicstaticvoidmain(String[]args){
try{
Sockets=newSocket("127.0.0.1",8888);
PrintWriterpw=newPrintWriter(s.getOutputStream());
pw.write("helloserver");
pw.flush();
pw.close();
}catch(Exceptione){
//TODOAuto-generatedcatchblock
e.printStackTrace();
}
}
}
Ⅱ java 聊天室 源代碼
最簡單的聊天室
Ⅲ 在Android端使用socket傳輸圖片到java伺服器，求源代碼
/**
*思想：
1.直接將所有數據安裝位元組數組發送
2.對象序列化方式
*/
/**
*thread方式
*
*@authorAdministrator
*/
{
privatestaticfinalintFINISH=0;
privateButtonsend=null;
privateTextViewinfo=null;
privateHandlermyHandler=newHandler(){
@Override
publicvoidhandleMessage(Messagemsg){
switch(msg.what){
caseFINISH:
Stringresult=msg.obj.toString();//取出數據
if("true".equals(result)){
TestSocketActivity4.this.info.setText("操作成功！");
}else{
TestSocketActivity4.this.info.setText("操作失敗！");
}
break;
}
}
};
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
super.setContentView(R.layout.activity_test_sokect_activity4);
//StrictMode.setThreadPolicy(newStrictMode.ThreadPolicy.Builder()
//.detectDiskReads().detectDiskWrites().detectNetwork()
//.penaltyLog().build());
//StrictMode.setVmPolicy(newStrictMode.VmPolicy.Builder()
//.detectLeakedSqlLiteObjects().detectLeakedClosableObjects()
//.penaltyLog().penaltyDeath().build());
this.send=(Button)super.findViewById(R.id.send);
this.info=(TextView)super.findViewById(R.id.info);
this.send.setOnClickListener(newSendOnClickListener());
}
{
@Override
publicvoidonClick(Viewv){
try{
newThread(newRunnable(){
@Override
publicvoidrun(){
try{
//1:
Socketclient=newSocket("192.168.1.165",9898);
//2:
ObjectOutputStreamoos=newObjectOutputStream(
client.getOutputStream());
//3:
UploadFilemyFile=SendOnClickListener.this
.getUploadFile();
//4:
oos.writeObject(myFile);//寫文件對象
//oos.writeObject(null);//避免EOFException
oos.close();
BufferedReaderbuf=newBufferedReader(
newInputStreamReader(client
.getInputStream()));//讀取返回的數據
Stringstr=buf.readLine();//讀取數據
Messagemsg=TestSocketActivity4.this.myHandler
.obtainMessage(FINISH,str);
TestSocketActivity4.this.myHandler.sendMessage(msg);
buf.close();
client.close();
}catch(Exceptione){
Log.i("UploadFile",e.getMessage());
}
}
}).start();
}catch(Exceptione){
e.printStackTrace();
}
}
()throwsException{//包裝了傳送數據
UploadFilemyFile=newUploadFile();
myFile.setTitle("tangcco安卓之Socket的通信");//設置標題
myFile.setMimeType("image/png");//圖片的類型
Filefile=newFile(Environment.getExternalStorageDirectory()
.toString()
+File.separator
+"Pictures"
+File.separator
+"b.png");
InputStreaminput=null;
try{
input=newFileInputStream(file);//從文件中讀取
ByteArrayOutputStreambos=newByteArrayOutputStream();
bytedata[]=newbyte[1024];
intlen=0;
while((len=input.read(data))!=-1){
bos.write(data,0,len);
}
myFile.setContentData(bos.toByteArray());
myFile.setContentLength(file.length());
myFile.setExt("png");
}catch(Exceptione){
throwe;
}finally{
input.close();
}
returnmyFile;
}
}
}{
privateStringtitle;
privatebyte[]contentData;
privateStringmimeType;
privatelongcontentLength;
privateStringext;
publicStringgetTitle(){
returntitle;
}
publicvoidsetTitle(Stringtitle){
this.title=title;
}
publicbyte[]getContentData(){
returncontentData;
}
publicvoidsetContentData(byte[]contentData){
this.contentData=contentData;
}
publicStringgetMimeType(){
returnmimeType;
}
publicvoidsetMimeType(StringmimeType){
this.mimeType=mimeType;
}
publiclonggetContentLength(){
returncontentLength;
}
publicvoidsetContentLength(longcontentLength){
this.contentLength=contentLength;
}
publicStringgetExt(){
returnext;
}
publicvoidsetExt(Stringext){
this.ext=ext;
}
}
下邊是服務端
publicclassMain4{
publicstaticvoidmain(String[]args)throwsException{
ServerSocketserver=newServerSocket(9898);//伺服器端埠
System.out.println("服務啟動........................");
booleanflag=true;//定義標記，可以一直死循環
while(flag){//通過標記判斷循環
newThread(newServerThreadUtil(server.accept())).start();//啟動線程
}
server.close();//關閉伺服器
}
}
{
="D:"+File.separator+"myfile"
+File.separator;//目錄路徑
privateSocketclient=null;
privateUploadFileupload=null;
publicServerThreadUtil(Socketclient){
this.client=client;
System.out.println("新的客戶端連接...");
}
@Override
publicvoidrun(){
try{
ObjectInputStreamois=newObjectInputStream(
client.getInputStream());//反序列化
this.upload=(UploadFile)ois.readObject();//讀取對象//UploadFile需要和客戶端傳遞過來的包名類名相同，如果不同則會報異常
System.out.println("文件標題："+this.upload.getTitle());
System.out.println("文件類型："+this.upload.getMimeType());
System.out.println("文件大小："+this.upload.getContentLength());
PrintStreamout=newPrintStream(this.client.getOutputStream());//BufferedWriter
out.print(this.saveFile());//返回響應
// BufferedWriterwriter=null;
// writer.write("");
}catch(Exceptione){
e.printStackTrace();
}finally{
try{
this.client.close();
}catch(IOExceptione){
e.printStackTrace();
}
}
}
privatebooleansaveFile()throwsException{//負責文件內容的保存
/**
*java.util.UUID.randomUUID():
*UUID.randomUUID().toString()是javaJDK提供的一個自動生成主鍵的方法。UUID(Universally
*UniqueIdentifier)全局唯一標識符,是指在一台機器上生成的數字，它保證對在同一時空中的所有機器都是唯一的，
*是由一個十六位的數字組成
*,表現出來的形式。由以下幾部分的組合：當前日期和時間(UUID的第一個部分與時間有關，如果你在生成一個UUID之後，
*過幾秒又生成一個UUID，
*則第一個部分不同，其餘相同)，時鍾序列，全局唯一的IEEE機器識別號（如果有網卡，從網卡獲得，沒有網卡以其他方式獲得
*），UUID的唯一缺陷在於生成的結果串會比較長，字元串長度為36。
*
*UUID.randomUUID().toString()是javaJDK提供的一個自動生成主鍵的方法。UUID(Universally
*UniqueIdentifier)全局唯一標識符,是指在一台機器上生成的數字，它保證對在同一時空中的所有機器都是唯一的，
*是由一個十六位的數字組成,表現出來的形式
*/
Filefile=newFile(DIRPATH+UUID.randomUUID()+"."
+this.upload.getExt());
if(!file.getParentFile().exists()){
file.getParentFile().mkdir();
}
OutputStreamoutput=null;
try{
output=newFileOutputStream(file);
output.write(this.upload.getContentData());
returntrue;
}catch(Exceptione){
throwe;
}finally{
output.close();
}
}
}{
privateStringtitle;
privatebyte[]contentData;
privateStringmimeType;
privatelongcontentLength;
privateStringext;
publicStringgetTitle(){
returntitle;
}
publicvoidsetTitle(Stringtitle){
this.title=title;
}
publicbyte[]getContentData(){
returncontentData;
}
publicvoidsetContentData(byte[]contentData){
this.contentData=contentData;
}
publicStringgetMimeType(){
returnmimeType;
}
publicvoidsetMimeType(StringmimeType){
this.mimeType=mimeType;
}
publiclonggetContentLength(){
returncontentLength;
}
publicvoidsetContentLength(longcontentLength){
this.contentLength=contentLength;
}
publicStringgetExt(){
returnext;
}
publicvoidsetExt(Stringext){
this.ext=ext;
}
}
Ⅳ java的Socket實現
//伺服器端
import java.io.*;
import java.net.*;
//import java.util.*;
/**
*
* @author hp
*/
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws Exception {
String clientSentence;
String capitalizedSentence;
ServerSocket welcomeSocket=new ServerSocket(6789);
while(true){
Socket connectionSocket=welcomeSocket.accept();
BufferedReader inFromClient=new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
DataOutputStream outToClient=new DataOutputStream(connectionSocket.getOutputStream());
clientSentence=inFromClient.readLine();
//capitalizedSentence=clientSentence.toUpperCase()+'\r'+'\n';
//outToClient.writeBytes(capitalizedSentence);
if(clientSentence.equalsIgnoreCase("admin 1234"))
outToClient.writeBytes("ok"+'\n');
else
outToClient.writeBytes("error"+'\n');
}
}
}
//客戶端
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.*;
/**
*
* @author Administrator
*/
public class Main extends JFrame{
JPanel jp;
JButton jb;
javax.swing.JTextField jt1;
JTextField jt2;
JTextField jt3;
JLabel jl1;
JLabel jl2;
public Main()
{
this.setBounds(150, 50, 300, 100);
jp= new JPanel(new GridLayout(3, 2));
jb=new JButton("登陸");
jt1=new JTextField();
jt2=new JTextField();
jt3=new JTextField();
jt3.setEditable(false);
jl1=new JLabel("用戶名");
jl2=new JLabel("密碼");
this.getContentPane().add(jp);
jp.add(jl1);
jp.add(jt1);
jp.add(jl2);
jp.add(jt2);
jp.add(jt3);
jp.add(jb);
this.setVisible(true);
jb.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String sentence;
String modifiedSentence = null;
//BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
Socket clientSocket = null;
try {
clientSocket = new Socket("127.0.0.1", 6789);
} catch (UnknownHostException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
//System.out.println("connection ok");
DataOutputStream outToServer = null;
try {
outToServer = new DataOutputStream(clientSocket.getOutputStream());
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
BufferedReader inFromServer = null;
try {
inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
sentence=jt1.getText()+" "+jt2.getText();
try {
//System.out.println(sentence);
outToServer.writeBytes(sentence + '\n');
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
try {
modifiedSentence = inFromServer.readLine();
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
//System.out.println("FROM SERVER:"+modifiedSentence);
jt3.setText(modifiedSentence);
try {
clientSocket.close();
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws Exception
{
Main m=new Main();
}
}