求各位大神帮帮忙,帮忙写一个java的程序,实现两个用户之间定时导oracle的表
java oracle 数据库
------解决方案--------------------
需不需要线程呢?
如果不用线程的话,用别人的例子改的。。
当然也许不需要这么繁琐,但是这样看起来比较规整
public class ServerTest {
int port = 8821;
void start() {
Socket s = null;
try {
ServerSocket ss = new ServerSocket(port);
while (true) {
// 选择进行传输的文件
String filePath = "D:\\db";
File fi = new File(filePath);
System.out.println("文件长度:" + (int) fi.length());
// public Socket accept() throws
// IOException侦听并接受到此套接字的连接。此方法在进行连接之前一直阻塞。
s = ss.accept();
System.out.println("建立socket链接");
DataInputStream dis = new DataInputStream(
new BufferedInputStream(s.getInputStream()));
dis.readByte();
DataInputStream fis = new DataInputStream(
new BufferedInputStream(new FileInputStream(filePath)));
DataOutputStream ps = new DataOutputStream(s.getOutputStream());
// 将文件名及长度传给客户端。这里要真正适用所有平台,例如中文名的处理,还需要加工,具体可以参见Think In Java
// 4th里有现成的代码。
ps.writeUTF(fi.getName());
ps.flush();
ps.writeLong((long) fi.length());
ps.flush();
int bufferSize = 8192;
byte[] buf = new byte[bufferSize];
while (true) {
int read = 0;
if (fis != null) {
read = fis.read(buf);
}
if (read == -1) {
break;
}
ps.write(buf, 0, read);
}
ps.flush();
// 注意关闭socket链接哦,不然客户端会等待server的数据过来,
// 直到socket超时,导致数据不完整。
fis.close();
s.close();
System.out.println("文件传输完成");
Thread.sleep(1000*6000);//休息十分钟
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String arg[]) {
new Server().start();
}
}
客户端
public class Clint {
private ClientSocket cs = null;
private String ip = "localhost";// 设置成服务器IP
private int port = 8821;
private String sendMessage = "Windwos";
public Clint() {
try {
if (createConnection()) {
sendMessage();
getMessage();
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
private boolean createConnection() {
cs = new ClientSocket(ip, port);
try {
cs.CreateConnection();
System.out.print("连接服务器成功!" + "\n");
return true;
} catch (Exception e) {
System.out.print("连接服务器失败!" + "\n");
return false;
}
}
private void sendMessage() {
if (cs == null)
return;
try {
cs.sendMessage(sendMessage);
} catch (Exception e) {
System.out.print("发送消息失败!" + "\n");
}
}
private void getMessage() {
if (cs == null)
return;
DataInputStream inputStream = null;
try {
inputStream = cs.getMessageStream();
} catch (Exception e) {
System.out.print("接收消息缓存错误\n");
return;
}
try {
// 本地保存路径,文件名会自动从服务器端继承而来。
String savePath = "E:\\";
int bufferSize = 8192;
byte[] buf = new byte[bufferSize];
int passedlen = 0;
long len = 0;
savePath += inputStream.readUTF();
DataOutputStream fileOut = new DataOutputStream(
new BufferedOutputStream(new BufferedOutputStream(
new FileOutputStream(savePath))));
len = inputStream.readLong();
System.out.println("文件的长度为:" + len + "\n");
System.out.println("开始接收文件!" + "\n");
while (true) {
int read = 0;
if (inputStream != null) {
read = inputStream.read(buf);
}
passedlen += read;
if (read == -1) {
break;
}
// 下面进度条本为图形界面的prograssBar做的,这里如果是打文件,可能会重复打印出一些相同的百分比
System.out.println("文件接收了" + (passedlen * 100 / len) + "%\n");
fileOut.write(buf, 0, read);
}
System.out.println("接收完成,文件存为" + savePath + "\n");