java网络编程复习资料.doc

Socket 编程客户端代码：public class Client private String host = ; private int port = 8000; private Socket socket; /* Creates a new instance of Clinet */ public Client() try Socket socket = new Socket(host,port); InputStream is = socket.getInputStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); System.out.println(br.readLine(); catch(UnknownHostException e) e.printStackTrace(); catch(IOException e) e.printStackTrace(); public static void main(String args) Client client = new Client(); 服务器端代码：Serverpublic Server() try serverSocket = new ServerSocket(port); System.out.println(服务器已启动+serverSocket.getInetAddress().toString(); catch(IOException e) e.printStackTrace(); public void service() while(true) try Socket socket = serverSocket.accept(); System.out.println(有新连接，IP客户端IP是+socket.getInetAddress().toString()+,端口是+socket.getPort()+); OutputStream os = socket.getOutputStream(); PrintWriter pw = new PrintWriter(os); pw.write(欢迎登录！); pw.flush(); catch(IOException e) e.printStackTrace(); public static void main(String args) / TODO code application logic here Server server = new Server(); server.service(); 单线程编程：public class TalkThread extends Thread private int sleeptime; public TalkThread() sleeptime=(int)(Math.random()*5000); public void run() System.err.println(this.getName()+is going to start,it will sleep for +sleeptime+ ms); try Thread.sleep(sleeptime); catch(Exception e) e.printStackTrace(); System.err.println(this.getName()+ waked up!); 多线程编程：public class MulitiThreadDemo public MulitiThreadDemo() public static void main(String args) TalkThread talkThread1=new TalkThread(); TalkThread talkThread2=new TalkThread(); TalkThread talkThread3=new TalkThread(); TalkThread talkThread4=new TalkThread(); System.err.println(Thread is starting.); talkThread1.start(); talkThread2.start(); talkThread3.start(); talkThread4.start(); System.err.println(Thread started!); JavaMailpublic class SendMail public static void main(String args) throws MessagingException String smtphost=; String user=test; String pwd=123123; String from=; String to=; String subject=测试邮件; String body=您好，这是一封测试邮件; Properties props=new Properties(); props.put(mail.smtp.host,smtphost); props.put(mail.smtp.auth, true); Session ssn=Session.getInstance(props,null); MimeMessage message=new MimeMessage(ssn); InternetAddress fromAddress=new InternetAddress(from); message.setFrom(fromAddress); InternetAddress toAddress=new InternetAddress(to); message.addRecipient(Message.RecipientType.TO, toAddress); /抄送 message.addRecipient(Message.RecipientType.CC,toAddress); /暗送 message.addRecipient(Message.RecipientType.BCC,toAddress); message.setSubject(subject); message.setText(body); Transport transport=ssn.getTransport(smtp); transport.connect(smtphost,user,pwd); transport.send(message); transport.close(); JDBC编程public static void main(String args) throws Exception Class.forName(com.mysql.jdbc.Driver); String url=jdbc:mysql:/localhost:3306/testu; /灰色是数据库名称 String username=root; /用户名 String password=admin; /密码Connection connection=DriverManager.getConnection(url,username,password); Statement st=connection.createStatement(); String sql=select * from account; ResultSet rs=st.executeQuery(sql); while(rs.next() System.out.println(rs.getInt(1)+ +rs.getString(2)+ +rs.getString(3); rs.close(); st.close(); connection.close(); WebService 基于java 的struts 框架Struts配置文件： /success.jsp /failure.jsp 前台web页面： username: password: Java文件 AccountAction.javaimport com.opensymphony.xwork2.ActionSupport;public class AccountAction extends ActionSupport private String username;private String password;public String getUsername() return username;public void setUsername(String username) this.username = username;public Str