java logClient.doList的使用
时间: 2023-12-02 22:05:40 浏览: 27
`logClient.doList()` 方法是用于从服务器上获取日志文件列表的方法,使用该方法需要先创建一个 `LogClient` 对象,并在对象中设置好服务器的 IP 地址、端口号、用户名和密码等参数。
以下是一个示例代码:
```java
import org.apache.logging.log4j.core.net.client.TcpSocketClient;
import org.apache.logging.log4j.core.net.server.TcpSocketServer;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.List;
public class LogClientExample {
public static void main(String[] args) throws IOException {
String serverHost = "localhost"; // 服务器 IP 地址
int serverPort = TcpSocketServer.DEFAULT_PORT; // 服务器端口号,默认为 4560
String username = "username"; // 用户名
String password = "password"; // 密码
// 创建 LogClient 对象
LogClient logClient = new LogClient(serverHost, serverPort, username, password);
// 获取日志文件列表
List<String> fileList = logClient.doList();
// 输出日志文件列表
for (String file : fileList) {
System.out.println(file);
}
// 关闭 LogClient 对象
logClient.close();
}
static class LogClient {
private final String host;
private final int port;
private final String username;
private final String password;
private Socket socket;
private InputStream inputStream;
private OutputStream outputStream;
public LogClient(String host, int port, String username, String password) throws IOException {
this.host = host;
this.port = port;
this.username = username;
this.password = password;
connect();
login();
}
public List<String> doList() throws IOException {
// 发送 LIST 命令
String command = "LIST\n";
outputStream.write(command.getBytes());
// 读取服务器返回的响应
byte[] buffer = new byte[1024];
int len = inputStream.read(buffer);
String response = new String(buffer, 0, len);
// 解析响应,获取文件列表
String[] lines = response.split("\n");
if (lines.length > 1) {
String fileList = lines[1];
return List.of(fileList.split(" "));
} else {
return List.of();
}
}
public void close() throws IOException {
// 发送 QUIT 命令
String command = "QUIT\n";
outputStream.write(command.getBytes());
inputStream.close();
outputStream.close();
socket.close();
}
private void connect() throws IOException {
socket = new Socket(host, port);
inputStream = socket.getInputStream();
outputStream = socket.getOutputStream();
}
private void login() throws IOException {
// 发送 LOGIN 命令
String command = String.format("LOGIN %s %s\n", username, password);
outputStream.write(command.getBytes());
// 读取服务器返回的响应
byte[] buffer = new byte[1024];
int len = inputStream.read(buffer);
String response = new String(buffer, 0, len);
// 检查响应是否为 OK
if (!response.startsWith("OK")) {
throw new IOException("Failed to login to Log4j server: " + response);
}
}
}
}
```
在上面的示例代码中,我们首先创建了一个 `LogClient` 对象,并调用了它的 `doList()` 方法来获取日志文件列表。然后,我们遍历日志文件列表并输出它们的名称。最后,我们调用 `LogClient` 对象的 `close()` 方法来关闭连接。